This is the stuff you wouldn't ever know unless you test. Thanks for your hard work Richard.
@Thumper68
4 жыл бұрын
Go4BrokeOffroad well you could know it from experience as well but this is definitely precise and nice lol
@thehappytexan
4 жыл бұрын
I worked part time at a speed shop during summers when I was a teenager, and the head mechanic always said that 3” exhaust was a waste unless you were making over 600 hp. 3” sounds cooler, and costs more also. After seeing all of the trophies this guy had collected on everything from street stock to nitro rail cars, I figured he had learned that lesson on his own dime. He was one heck of a guy.
@batasspp
4 жыл бұрын
But if your collector is 3"....... As the exhaust cools down, it definitely doesnt need to be 3" anymore
@richardholdener1727
4 жыл бұрын
think volume based on power
@cowboysayshellyeah
4 жыл бұрын
Thank you Richard! Definitely answered my questions.
@DinsdalePiranha67
4 жыл бұрын
Thank you for your, um, exhaustive testing!
@thehotrodstation3313
4 жыл бұрын
I had already said to myself.....Self,,,,more power with long tube headers BUT!!!!!! Boost pressure will be down. Boy was I wrong. That's why I absolutely love this channel. 👏 Bravo!
@TofumanFC3S
4 жыл бұрын
Any chance of ever comparing 4-2-1 headers versus 4-1 headers with all else being the same. Especially interested in how the multiple scavenging points works with an additional X-tube for instance
@LEGOCAMARO
4 жыл бұрын
Electric exhaust cutouts are a nice thing to have. Got them on my 392
@l8tapex
4 жыл бұрын
full exhaust is very important to most of the sales for the street. thanks.
@Shane-Singleton
4 жыл бұрын
I always like these types of comparisons that attempt to mimic real world conditions. Picking out heads, cam, etc. is a big part but just as much thought goes into exhaust, cooling, and all the other ancillary things when building a project. Now that being said i'm not considering an LS swap on a C20 chevy so may need to pick up one of these exhaust kits.
@johnclary729
4 жыл бұрын
Engine Masters did a similar test with 2 1/2" and 3" and open exhaust a few years back.
@jamesarnold7636
4 жыл бұрын
Peter they just finished season 5 like last month... the show is still on
@garysacry5969
4 жыл бұрын
That’s why I have the on demand, more shows like engine masters, and no auto-biography, at one point not long ago it was a dollar a month. Personally I love the on demand, I’ve gone back and watched everything from day one.
@rcairforceone
4 жыл бұрын
This is the good stuff! That exhaust work is always a mystery.
@socleanmx6
4 жыл бұрын
Shush!!!! Lol we dont mention those devils as they teased us then switched up and charged us for the content!!
@DrFiero
4 жыл бұрын
Gotta be said - this test must have been exhausting.
@pospc2
4 жыл бұрын
I came to say this
@g8morganogt
4 жыл бұрын
I love all your video's! Very good information, and as always numbers do not lie. Keep up the great work. You definitely know your stuff!
@bartpang
4 жыл бұрын
The long tube headers probably provided a more consistent airflow cylinder to cylinder which is why it made more power.
@joebarlow1775
4 жыл бұрын
I have a 97 fuel injected 460 with stan's headers try-y's. Long intake runner with great scavenging long tube headers. Like you said at the end with a centrifical supercharger it is a beast! I do not know what it dyno's at but sure is a torque monster. Thanks for your great content.
@broz1969
3 жыл бұрын
Richard, your stuff is great, bottom line. Please "redo" the "engine master" H vs X vs Straight through. They did it way back when, but on a very low hp engine. Would love to see that on a 600+ motor to see the effect.
@davidciesielski8251
4 жыл бұрын
THANKS holy crap those mufflers are great!!
@roykrossin8343
4 жыл бұрын
Becoming the King of the Dyno !
@bdugle1
4 жыл бұрын
You just keep bringing us more awesomeness!
@craigritchie1532
4 жыл бұрын
Other than the obvious added exhaust flow of a long tube header the main reason increace power is their ability to draw the intake charge across the combustion chamber on overlap thus improving cylinder filling. When running a posative displacement blower {provided exhaust back pressure is lower than boost pressure} the blower forces the intake charge across the combution chamber on overlap thus negating much of the long tube headers advantage
@richardholdener1727
4 жыл бұрын
scavenging still takes place under boost
@craigritchie1532
4 жыл бұрын
@@richardholdener1727 , yes Richard that's true however i think that in a NA engine the scavenging effect draws the fresh intake charge into and across the combustion chamber and also gets the intake air moving into the cylinder sooner in the cycle delivereing a more complete cylinder fill adding extra HP, the exhaust scavanging has more draw on the intake valve than the piston does at any point in its stroke. when running a posative displacement blown engine the blower pushes the intake charge into and across the combustion chamber so the exhaust scavanging has less residule exhaust gas avalable in the combustion chamer to extract so you end up with less additional HP produced than you'd otherwise expect....just sayng
@Terryray123
4 жыл бұрын
Way better than engine masters
@GroovesAndLands
4 жыл бұрын
A focus on test data rather than antics
@averyalexander2303
4 жыл бұрын
@@GroovesAndLands I like both shows, but I like that Richard makes this information available to everyone for free instead of teasing episodes on KZitem and requiring a monthly subscription to watch them like Engine Masters does, I really don't like that. I also like how much more frequently he uploads compared to Engine Masters, sometimes they don't upload for well over a month.
@maxjones9139
4 жыл бұрын
Avery Alexander I finally subbed to motertrend. It’s worth it, there’s tons of good car content!
@porkbuttrocks
4 жыл бұрын
It would be super to see a few stock cast iron manifold tests on something like an LQ4 with a cam or a 5.3 with a little cam, etc. Headers are good for power, but they are cubic money for the good stuff. And for a lot of engine swaps we can test fit cast manifolds, but nobody is at the ready with headers to test-fit.
@richardholdener1727
4 жыл бұрын
I ran the BTR truck cam test with stock manifolds and headers
@porkbuttrocks
4 жыл бұрын
@@richardholdener1727 I shall look for that test thank you very much
@jamest.5001
4 жыл бұрын
Alot of older cars came with 2.5" or 3" single exhaust, (3rd gen F-body). I'd like to see a comparison of 2.5" and 3" duals, compared to 3" single and maybe 3.5" or 4" single! They say a decent single will outflow a moderate sized dual pipe, "they" being the science/physics types, the flow sticking to the walls, and higher flow mid pipe. So a large single will have a larger high flow area than a slightly smaller dual pipe, so why not just run dual 4" or even 5" exhaust? Ha-ha!!.... I bet it would sound awesome if nothing else!! 4" duals with small mufflers just before set of 5" x 18" tips, I have heard something similar, it sounded good, but had 2.25" into large tips, about 18" it had a nice deep tone!
@177SCmaro
4 жыл бұрын
What might be going on is, because you have a good deal of overlap with a "na cam", the long tube headers might be causing a bit of the reflected wave in the exhaust ending up in the intake and being picked up by your map or boost sensor and/or jumbling up with the pulses caused by the intake and "fighting" the supercharger - basically, a bit of a mismatch between intake, cam timing, and exhaust. This is one reason why "blower cams" aren't complete bullshit. By reducing overlap they can reduce the effects of a mismatch between short or no intake runners on most blower manifolds and typical long tube headers.
@kimkoe8906
4 жыл бұрын
Awesome work as always. Please do a vid based on Summit Pro LS cams. You covered the stage 4 but there is no avail info on the sum-8718 for those of us keeping work trucks with cam/ lifter failure on the road. I love the Hi performance stuff but what about the daily driver
@MJTAUTOMOTIVE
4 жыл бұрын
Richard is currently working on selling ls cams.
@gordonb8052
4 жыл бұрын
Doing God's work...
@Sruikyl
4 жыл бұрын
You know whats interesting is on a 6.0 (364) with those same heads, very similar cam and that intake made about 590 hp on thier dyno (referring to the LS 20 intake test). 4.0" bore 3.622" stroke vs 3.9" bore and 4" stroke.
@richardholdener1727
4 жыл бұрын
so 2 completely different motors
@TheNumbers400
4 жыл бұрын
Great info as always. I would love more positive displacement supercharger testing.
@normansanchez8730
4 жыл бұрын
Wow, thanks for all the insight!!! Keep testing
@GIGABACHI
4 жыл бұрын
I would like you to dig up more on why the LT headers didn't drop the boost pressure. Your explanation makes sense somewhat but I would like some "lab-time" behind it to back it up. Looking forward to more. Thanks !
@davelewis2174
4 жыл бұрын
pressure is resistance to flow , the intake valve is all most allways the choke
@theozman38
4 жыл бұрын
Hey Richard and all you displacement junkies. 😆. I’m Putting on corvette style side pipes at 3 inch collectors and 1-3/4 pipes to the collectors and the stack pipe is 3 inch by 48”long. I’m also installing long tube headers on 5.3 l59 that is about the same configuration as the side pipes minus the 48”x3” long pipe. Lol but ya. The long tubes will be added additional tubing to meet up with the side pipes with the exception of a y pipe connected to the 3 inch piping from long tubes to connect to the side pipe. The y pipe is 3”single inlet x2” double outlets. That will connect to the side pipes crazy I know but more economical than having someone pipe the long tubes wit 1-3/4 piping to the side pipe collectors. Do the math. I’m still at 3 inches from the long tube collectors to the side pipes. But ya. They split up and rejoin at the side pipe collectors. Lol. Crazy but it’ll work. My biggest guess is the sound. Loud as hell or a good tone. I don’t know yet. Nothing is installed yet. To look at my side pipes click my pic for the review of my side pipes. Someone tell me if this overkill and I’m cutting my own throat for scavenging. I don’t think so. I should be ok.
@richardholdener1727
4 жыл бұрын
how long are the primary turbes
@theozman38
4 жыл бұрын
Richard Holdener. Hey Richard. Thanks for replying. If you mean the tubes on the long tube headers , I don’t know. eBay didn’t show this in the pics. This setup for side pipes is just a configuration for one side of the dual exhaust system I’m building. The 3” collectors for the side pipes including the 1-3/4 tubes are a total length of 20 from tip to tip I just received the headers but had no time to really inspect what I got. I’m a over the road trucker so it was a grab n go when I got them. From header to side pipes isn’t going to take that much of tubing to connect them I’ve bought 3”x14inch flex pipe to help with the bending and to loosen up the system so it won’t break or crack anything. I can shorten the flex if needed. I’m thinking only maybe two sharp bends in the piping per header to connect them. It for a 2003 yukon
@theozman38
4 жыл бұрын
Richard Holdener primary tubes? On the side pipes!? 3”x48” long
@csg2000
4 жыл бұрын
It would be cool to see a test of off the shelf headers versus custom built stepped primary/merge collector headers designed specifically for the cam/heads/intake/displacement combo. I've always been curious if the produce enough of a gain to justify the work/cost.
@A_lesson_in_Hate
4 жыл бұрын
He's did one a while back with cheap eBay ones vs expensive one's, cheap one's were just as good as the others
@randallslocum5252
4 жыл бұрын
I here but not waiting on the dodge 4.7L no more!! Bought a SS Camaro with a 6.0L with a turbo now I’m all in the LS stuff now
@shawnsanders9450
4 жыл бұрын
I was surprised about the header comparison on the supercharged engine. Not only did the boost not drop, like it normally does, but it went up slightly.
@studio571
4 жыл бұрын
amen on the runner vs primarie lengs !
@gagemosley8365
4 жыл бұрын
Please test 4-2-1 headers on an ls. Thanks for all of the hard work buddy
@russelljackson7034
4 жыл бұрын
Right on
@BadassBarney452
4 жыл бұрын
Good test with better information.
@jasonbeard4909
4 ай бұрын
Oh my god I had to watch you ramble on the whole time thinking that I was going to hear different types of exhaust. Oh my god what a waste of my life I can’t get back. I just wanna know what it sounds like.
@robertkeime4907
4 жыл бұрын
Great video
@marcstlaurent3719
4 жыл бұрын
I’d like to see three inch to muffler then two and a half mandrel over the axle for the rest as temp of exhaust lower and more condensed at that point and quieter as well .
@rogero3591
4 жыл бұрын
I am probably dating myself by saying this but richard is the smokey yunick of today. Your awesome Richard. Keep up the good work and thank you!!
@richardholdener1727
4 жыл бұрын
I'm no Smokey
@nathanadams5722
4 жыл бұрын
Cool test. Please revisit the idea of testing what happens when adding length to the collector extension. Maybe, see at what length of straight pipe that power drops. Or, improves. Inquiring minds want to know.
@richardholdener1727
4 жыл бұрын
after 40 inches or so-the curve doesn't change
@ericflower9855
4 жыл бұрын
How about a test running accessories?...running alt vs not running one, factory water pump vs electric water pump..
@richardholdener1727
4 жыл бұрын
that video is already up
@ericflower9855
4 жыл бұрын
@@richardholdener1727 O-yea...alot of video's since that one...lol
@jacklynch6089
3 жыл бұрын
I wish you had added Hooker Manifolds with this test
@bobstock9324
4 жыл бұрын
Do you ever sleep? Thanks for all your hard work. So much great info that us backyard builders would otherwise never have access too. Provides actual unbiased data so a guy on a budget knows where/how to spend the money for the greatest results. You are becoming a legend of trusted info. Please don't ever quit when the bean counters inevitably say it costs too much. Just know all your effort is appreciated by a whole bunch of speed freaks.
@richardholdener1727
4 жыл бұрын
I would like to know who the bean counters are?
@scottworelds2933
4 жыл бұрын
I think I know why the boost pressure went up on the long tubes, and it is easy to confirm. Look at the BSFC and grams of mass air flow values. If the BSFC got better I would think the cam had too much overlap and allowed too much air charge to blow down. This is good in an natural aspirated engine where it needs that exhaust velocity to make a low pressure area in the cylinder. However with a dramatically higher than atmospheric pressure intake charge, I think it came in and went out. I know Richard likes to say "all cams are boost cams" but there are cams "better" optimized for different applications. I bet if the valve events were different and the test was ran again we WOULD see the boost reference lower with the increase in power.
@hoonaticbloggs5402
4 жыл бұрын
Be interesting to see the boost curves on a cam without overlap.
@batasspp
4 жыл бұрын
Right. The overlap is reducing the benefit of headers I think.
@lionelpatterson1436
2 ай бұрын
I forgot about Hooker Headers it's been a long time
@Dr_Xyzt
4 жыл бұрын
That blower curve is interesting. What if that particular additional boost takes place during a more efficient part of the operating range for the blower? Is it unreasonable to have resonant waves in the assembly that give us an inflated boost pressure? We'd have to go into the tune and check the air-mass data. -- I'm glad to see that the X-pipe setup didn't beat the power of plain old dual extensions dumped under the cab. As far as I'm concerned, the X-pipe and H-pipe are relatively overrated. Duals are easier to work on and sound better. When you take off one side, the other side doesn't wrestle you. I know some folks that throw a monster fit about the crossover being pivotal to performance. I mean, the majority of your power comes from your head/cam/intake/header combination, and how well tuned it is. If X-pipes were the be-all end-all, then we'd be putting X-pipes on Gen 1 small blocks with 650 holleys, camelbacks, and RV cams.
@roknroy1
4 жыл бұрын
another great video!!!!!!
@andyschroeyers2614
Жыл бұрын
I would absolutely love to see this same test with duals vs X pipes vs two to one
@andyschroeyers2614
Жыл бұрын
Two to one as in single exit exhaust
@deansapp4635
4 жыл бұрын
How about testing a single 3 and 3.5 inch single exhaust
@hoonaticbloggs5402
4 жыл бұрын
Duh.
@B4CMARO
4 жыл бұрын
@Peter late model Fbodies
@Ws6Ms
4 жыл бұрын
@Peter yes F bodies
@orangetruckman
4 жыл бұрын
Positive praise I bet is appreciated. I’m thinking he needs more subscribers and thumbs up 👍🏻 For the amount of work he does for us is speechless. Let’s get him to 1 million subscribers before the end of the year people!!! There’s no way I’d be able to afford 1/100 of what he’s done for us, so show the love!
@richardholdener1727
4 жыл бұрын
thnx-subs are going up- I appreciate the support
@FSTHEMI
2 жыл бұрын
I’d like to see 3” vs 3.5” exhaust big cubic in NA set up.
@stlchucko
4 жыл бұрын
Have you compared exhausts with stock stuff? Like a 5.3 with the stock truck exhaust (catted Y pipe, since stock muffler) vs non-cat Y pipe and/or aftermarket muffler (like a cat back) vs long tubes with dual exhaust. It’d be interesting to see the gains from a mild combination for all us guys with relatively stock pickups like yours.
@richardholdener1727
4 жыл бұрын
gains are less on stock or mild combos
@ze_german2921
3 жыл бұрын
I think it would be cool to test without header extensions. I know of some people who have build their exhaust to accommodate their drag chassis and do a cool cut out at the fender. The need for 18” header extension is very underestimated.
@richardholdener1727
3 жыл бұрын
we have done that test-the extension adds torque
@tiitsaul9036
4 жыл бұрын
Thanks for sharing.
@fastlanez3000
4 жыл бұрын
Love to see a high performance engine (over 600hp) comparing full "performance" exhaust with factory cats, "high flow" cats and finally with no cats. Curious the HP and Torque performance differences at various RPM. Thanks for all the testing!
@adamrives6353
4 жыл бұрын
6:05 that’s what I was thinking.
@Phil-rs5wl
4 жыл бұрын
It would be cool to see a test like this on a turbo engine. Like open short downpipe compared to a long downpipe w/muffler and tailpipe.
@cowboysayshellyeah
4 жыл бұрын
That actually would be a awesome test.
@richardholdener1727
4 жыл бұрын
please see the turbo exhaust video that is already up
@scottm7341
4 жыл бұрын
Great work as always. Have you ever tested stepped primary tubes? 1-3/4 to 1-7/8 for example? I would like to know the guidelines, like how far down from the head to make the step.
@pwdies
Жыл бұрын
ls3 intake centrifugal charger with long tube comparison please!
@RHYNOMAN12
4 жыл бұрын
How about a side mount whipple (w/intercooler) and a long runner 102 mm intake??
@williamjarman7466
4 жыл бұрын
Seems like long tube headers still make Power even with short Runner intake they make more difference with long long Runner intake but they still make more power than shorty headers almost all the time from what I seen from your channel and engine Masters
@renwickconolly2839
3 жыл бұрын
Perhaps a dedicated supercharger cam might have given the expected boost reduction ?
@seanpaul8584
4 жыл бұрын
What about 1 3/4" vs 1 7/8" primaries?
@seanpaul8584
4 жыл бұрын
I'd like to see a 500rwhp ls with 1 3/4" primaries with 2.5" exhaust vs the same motor with 1 7/8 and 3" exhaust.
@shannonmedley4058
4 жыл бұрын
Id like to see the same basic exhaust test vs cutouts. My car runs slightly over .1 tenth quicker in the 8th mile with cutouts open vs 2.5 full exhaust and 2 chamber flowmasters mufflers. (Cam and long tubes only LS2).
@hu3.789
4 жыл бұрын
Richard - Is there any chance that you would do an exhaust shoot out comparing catalytic converters that are comparable to an OEM cat, high flow cats, and no cats for an engine that is set up for the street (around 600 horsepower)? I'm in the camp that cats don't make much of a difference if the output of the engine is 600 horsepower or less.
@richardholdener1727
4 жыл бұрын
cats would be the most restrictive single portion of the exhaust
@hu3.789
4 жыл бұрын
What I wanted to know is how restrictive are they and do high flow cats make a difference? In my state cats are required so I'm stuck with them as I'm sure others are. Thank you for responding to my inquiry.
@sstevocamaro
4 жыл бұрын
I wanna see the Y pipe vs X pipe! Can someone PLEASE do this!!
@Amy-wh3dt
4 жыл бұрын
How about chamberd mufflers vs straight through mufflers
@imacaryay7628
4 жыл бұрын
I'm pretty sure Engine Masters on the motortrend app did that test if you're subscribed.
@utahcountypicazospage5412
4 жыл бұрын
Always straight thru
@Dr_Xyzt
3 жыл бұрын
Get round mufflers. Easier to install.
@utahcountypicazospage5412
4 жыл бұрын
In my opinion the supercharger boost doesn’t care how it leaves as long as it’s quick should of ran straight headers and seen what they did
@andyharman3022
4 жыл бұрын
I never knew that a 96mm block could be bored to 99. I suppose that only applies to an iron block. Even then, it's a radical overbore.
@blow0me
4 жыл бұрын
lets see the turbo setups with the full twin 3" exhaust ?
@batasspp
4 жыл бұрын
So basically just put a supercharger on instead of headers, cam, head work, intake, throttle body nonsense... More power and probably more reliable, no trade offs, maybe even no loss of fuel economy.
@richardholdener1727
4 жыл бұрын
cam and boost
@dielauwen
4 жыл бұрын
Why didn't you do a test with no exhaust manifolds at all? I have never seen anyone do it. That is how thery ran them in the 20's.
@artemusifasuenshuffleman8535
4 жыл бұрын
I believe your scavenging would be out the window..you need the low pressure tail of the exhaust pulse to suck the old air/fuel out during overlap
@jimkillen1065
4 жыл бұрын
My experience with exhaust was a eye opener back when . When i installed my fresh built 302 engine in my 68 camaro . It had 12.5 compression 600 iskey roller very good set of head headers and lol hush thrush turbo muffler behind the 2.5 i think 18 long collectors When i went to full throttle the motor would act up and i ran poorly. I pulled those turbo mufflers off pitched them in trash I installed a 3 inch collector's about 18 inch long and added cross over tube like Chrysler does between the collectors then added 3 inch exhaust to 3 inch glass packs . Instant change the motor would pull to 7800 on blink of a eye up againt the rev limiter thank god lol . The prices of crap mufflers were all ready puffed out from the motor damn never again I know first hand what a good set of headers will do Now i did not use a big of headers as the motor the heads came off of buf i did not turn this motor 10k either
@Art70s
4 жыл бұрын
Will it be the same for a 4 or 6 cylinder....you should test the turbo exhaust different air flow for the turbo
@richardholdener1727
4 жыл бұрын
there is a turbo exhaust video up
@christianmeeks4430
4 жыл бұрын
Could we get stock manifold vs shorty header vs long header on a single or twin turbo combo?
@robertturner333
4 жыл бұрын
Would a bigger pipe size in the long tube headers (2”) make more power
@neonT3
4 жыл бұрын
I wanna see full 2.5 exhaust vs 3.0 full exhaust....
@richardholdener1727
4 жыл бұрын
almost no difference at this power level
@neonT3
4 жыл бұрын
@@richardholdener1727 Def sounds nicer with 3'' haha
@corystansbury
4 жыл бұрын
If I had a PD blower, I'd be sticking with a well designed factory manifold. View isn't worth the climb. That's one of the benefits of PD blowers in my eyes.
@cc23001
4 жыл бұрын
I couldn't disagree more. The headers improved power everywhere and only got better as the RPMs rose..
@vanjabi8827
4 жыл бұрын
I wish this would have been Long tubes, 3-4" Y pipe, 2.5-3" x pipe, with and W/O mufflers, then headers extensions last.
@bcbloc02
4 жыл бұрын
Still waiting on the log manifold turbo versus the long tube header turbo with the same flow. When you put the exhaust under back pressure does the length have as much effect? How about comparable turbo lag?
@richardholdener1727
4 жыл бұрын
scavenging (if present) still takes place under pressure
@Jontfs300
4 жыл бұрын
Please do the 2.2 Chevrolet engine single overhead cam please
@funfun8095
4 жыл бұрын
👐
@BustedWalletGarage
4 жыл бұрын
For whatever reason I’m more likely to watch if the video post in the early hours of the day. Maybe because the way my notifications work ? I dunno. I guess something to look at in your analytics ?
@crash5811
4 жыл бұрын
Be interesting to see how much of a difference muffler type makes. Straight thru, chambered, offset flow. And what about placement? Post-header, halfway back, tail pipe area. U could get real complicated if u started getting into the different types of packing and interior mesh but that might b too much. Keep up the good work love learning from u 👍👍
@richardholdener1727
4 жыл бұрын
Engine Masters did a muffler test
@blackcarsgarage4745
4 жыл бұрын
Great info!. Would like to see the limits of a LSA supercharger.
@datasailor8132
4 жыл бұрын
How do the exhaust gasses exit the dyno chamber? The Engine Masters show, which also uses Westech, always has large tubes exiting the chamber which I would expect to have an exhaust fan to the outdoors.
@richardholdener1727
4 жыл бұрын
they exist out the large suction fan and opening at the rear of the dyno
@GJ-DT
4 жыл бұрын
If it were a 5.3 and not a 4 inch stroke 383 the power differences would be very minimal.
@johnnyrouse2713
4 жыл бұрын
I would like to see a test if it hadn't already been done on aftermarket Chinese intakes like professional products versus elderbrock or other intakes of that nature if one is better than the other or equal
@RAWRMotorsports
2 жыл бұрын
Found it
@jeremystorey7771
3 жыл бұрын
My question is, which exhaust is bette? Ex. Flowmaster vs. borla, magna flow vs. dyna
@TofumanFC3S
4 жыл бұрын
I wonder if the scavenging in the 2.5” exhaust with X-pipe, might be a reason it’s so close to the 3” extensions...
@artemusifasuenshuffleman8535
4 жыл бұрын
I think so too..you lose vacuum on the big pipe at non-NASCAR rpms. It takes a lot of air to need that much pipe
@E_Chev
4 жыл бұрын
I’d like to see a 2.5” vs 3” full exhaust comparison on engines of different HP ratings. Engine Master did this comparison, but used a 700hp motor. How about a 350hp motor? Is a 2.5” exhaust sufficient?
@richardholdener1727
4 жыл бұрын
at 350 hp 2.5 is more than enough
@daleanderson7629
4 жыл бұрын
Could the extra boost level be related a higher charge temp. The volume of the intake port and chamber hasn't changed but your squeezing more air in. As i understand it, the act of squeezing air heats it (Boyles law), unrelated to friction due to the mechanical process (that's next), more the friction of the molecules being forced closer and hitting each other. The scavenging reduces the initial cylinder pressure allowing more of the higher intake pressure to flow in but there still has to be more air in the same space to make the power. My guess is the improved scavenging (less head / back pressure) reduces the pumping losses per CFM but the work to move more CFM results in higher net load on the compressor and therefore more heat from mechanical friction (hotter surfaces conducting and radiating into the air). How crazy the overall theory is will be easy to determine with a charge temp sensor which will be way easier to install on a centrif setup (you will likely see a stronger effect without inter-cooling). When centrifugal testing, Will you be testing a low profile hi-ram vs the banana intake, you could do I=long E= short, long long as well as redoing short,short and short long so conditions are the same. imagine the data if you did that test with charge temp and a MAF. Thanks for your work man
@melissamalone1530
Жыл бұрын
On the L33 exhaust question do u feel I will loose low end power if I run 1 3/4 long tubes w a true dual 3 inch x pipe setup w mufflers ? Second question is do u feel there would be a disadvantage if I ran the headers w 3 inch x pipe then reduced down to 2.5 inch mufflers and tailpipe ? Thanks in advance Richard. North Maine Steve
@richardholdener1727
Жыл бұрын
you won't hurt power
@gregorchina
4 жыл бұрын
Long tubes on stock truck exhaust straight pipe
@utahcountypicazospage5412
4 жыл бұрын
The last test I saw 18 inch collectors are the best any less you lose power any more you lose power 18 is the key number but as you see long tubes are always better and mufflers don’t take that much away to have a more tolerable sound I hate cars that are loud for nothing bass deep exhaust is always better I hate cars that rings my ears and runs 15 second quarter especially new muscle cars seems to be cool to be super loud and raspy
@richardholdener1727
4 жыл бұрын
going more than 18 inches does very little to power-usually just adds low end with no change in peak
@utahcountypicazospage5412
4 жыл бұрын
Richard Holdener you know a lot more so I’ll take your word
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