Glad to help!

Exactly!

thnx

He’s the Shit at giving tips fa sure I appreciate all your videos 💯🫡

can't use that any more

How did you port

​@@zmenace7463with an air die grinder.

Exactly, that’s why I’m still running the 6.4L intake on my big cam high compression 394Ci 6.4L stroker. Perfect setup spinning 6,500rpms , due to 5degrees of advance, on my 3,600 stall 8speed launching 4X4 for no prep racing.

One thing I always found interesting in testing but never had a chance to properly investigate is pressure pulsation in the plenum. Today's sensors and dataloggers can do a really good job showing the pressure drop in manifold with each cylinder event. Taking an RMS measurement of the map sensor fluctuation curve might be a good predictor of when you need more plenum volume.

there will always be pressure waves present in the plenum (reflected, Helmholtz and inertial ram), not sure even with a high sample rate that the fluctuations would indicate a need for volume (if volume even adds power).

Yea, it really does seem to be proven consistent that plenum volume is either "you have enough" or "you don't have enough"

@@richardholdener1727 Taking the RMS value of the sinusoidal pressure variations would give you an average magnitude of pressure drop during intake event pulses. Theoretically the larger the pressure drop the more likely you would need to increase plenum size. However I've never had the time nor inclination to (1) design the test (2) instrument the engine and (3) put together an intake manifold with a large enough variation in plenum volume to matter. But you Rich, you could do it ;)

Church-We would be monitoring more than just a pressure drop based on intake pulse. For each intake opening there are multiple (primary, secondary, tertiary) reflected waves to name a few, from every cylinder, if you have a fast enough sample rate-you would see pressure spikes for days (including Helmholtz from plenum volume resonating frequency). Again, I doubt you would see this correlate or indicate a need for plenum volume, and since I have run lots of plenum volume tests that showed nothing, it makes me skeptical of finding any gains even if we change it. Someone please show me a plenum change that made power (not on a carb tunnel ram)-I need to know it changes something

don't pick any of these manifolds to work with a Truck Norris

@@richardholdener1727 yeah. Really hard to go wrong with stock

isnt that 2 different cams???

all the intake ports are at least radiused

or the Alien!

@@richardholdener1727 x-ram torque maker

Watch the Holley Hi Ram vs. Edelbrock Pro Flo XT (previous video). It's the closest direct comparison you will likely find on the topic.

@@joeyjojojr.shabadoo915 👍

It will make a difference same as naturally aspirated. The boost just multiplies the naturally aspirated performance. If you've got the ring gap for it and can keep the intake charge cool enough adding a couple pounds will be a lot cheaper . If you're getting to the limits of intake temps and boost porting them will lower the boost on a fixed displacement and be nicer to the rings and intake temps while improving hp. If it's a turbo you'll see more CFM and power for the same boost or be able to lower the boost for safety and make the same or more power.

easier to turn up the boost

@@richardholdener1727 thanks that’s what I thought just making sure

Ive done that and between the intakes holley hi ram amd sniper intake both 102 mm throttle bodies non ported and turbo was a 91mm garrett. made 1345 28 psi on the sniper and 1389 on the holley with 26 psi m1 methonal was the gass , but the holley hi ram just out flowed it

a test between the Sniper and Hi Ram is NOT a plenum volume test-it is an intake design test (plus the other different variables mentioned)

@@richardholdener1727 The desiighns are fairly close both are short runner tunnel style. The high ram flowed more over the sniper. The plenum from the hi ram was more so over the drop in psi a mesure of restriction but made more power over the sniper. The sniper has trumpets in the ports im willing to bet if the sniper had more area or plenum over the ports it will out do the holley. Ive watch the intake shoot out wich was very interesting, Ive have been playing around the concept of ITB set up with a plenum. The first one three d made wasnt to bad on a B18 honda motor na made 70 hp over the stock but low speed air made it boggy so to speak but in all its fun plan on boosting it to see what it does.

70 hp over a stock Honda intake? Again, Plenum volume is not why the Sniper won't make Hi Ram power-but good luck with your testing.

@@richardholdener1727 Wow Richard lol ok what plenum means to us is the port I see what you are saying as far as plenum. Language barrier But yes we pick up 70 hp over a factory honda intake, When I come back state side Ill go by the shop and be glad to bring it up there so you can test it. We also have a very neat ls intake we are testing its a short runner , but it carries very good tq against a ls3 4 hp differance before the curve but after the ls3 carries more peak but we are thinking the harmonics and turbulance is hurting our intake . Ill be in touch and keep up the good work. Also just for future can we get a big bang 4 cylinder shoot out ? I got a couple of engines to bring to the cause free

I ran the Kegalodon (see video) that was basically a Beer keg for a plenum (no change)

​@@richardholdener1727 That was a cool test, would be pretty close to that 50L mark too and no real change at all. It would be interesting to see what their test setup was where the impact was so great, maybe has something to do with the bike engine tested revving out to 12.5k RPM or the way they increased the plenum volume had some kind of unintended extra effect on flow/scavenging. I wonder if it also could be due to the position of the throttle body going straight to atmosphere in the dyno vs having a more restrictive intake tubing setup but I don't imagine their setup would have been too different to yours. At the end of the day it seems like its super complex to tune and offers tiny changes comparatively to the runner length or the pressure gain of ram air intakes on sports bikes. Thanks for all the tests, so many times I've been thinking about stuff like this and time and time again you've already done the test Edit: Looked that test up again and they did have a 20mm restrictor plate in front of the throttle body to comply with FSAE competition rules so maybe it's mostly a way of optimising around the negative effects of intake restrictions.

makes me wonder if a restricted application is more responsive

​@@richardholdener1727 If you still have Kegalodon you could try add some kind of factory intake + filter setup. It's a quite a silly test but could maybe represent the extreme situation of intake plenum size in a stockish engine bay. I think you're more likely to run into a too small one still than have the larger one make a reasonable impact for a volume someone could actually achieve in an engine bay.

Power mark dyno

@@richardholdener1727 and when might westech be taking delivery of one of these??

they have one now

wrong intake for that combo and rpm

@@richardholdener1727TBSS be the best option for that set up ?

@richardholdener1727 oh I know, but humor me. Difference between the BTR and a truck intake on a stock 5.3 if it had a truck Norris in it?

@@notchase1798 a Whipple would be the best intake manifold lol but the fast LSXR or LSXRT would be the best intake for that combo. Look up the cathedral port intake test it's the best for that power range

Any short runner intake will hurt power and torque through 99% of the effective operating range on a 5.3L with a Truck Norris Cam. Pick the TBSS or FAST or leave the stock truck (especially if you have boost planned in the future)

that video is already up

Can you supply a link please cause I been waiting on that and haven’t seen if in youlist of vids lol

it was three video ago-it comes up when you go to my channel

I found it, thanks!

enjoy

the ls3 intake is hard to beat-see big ls3 intake videos

The same one that made the most power NA

we monitored that

@@richardholdener1727 Does the larger plenum volume intake have less of a vacuum? Or is the vacuum the same between intakes at WOT?

vacuum is the same because power was the same

I wanna see that shoot out!

if it doesn't change na, it doesn't change under boost

@@richardholdener1727 does this apply for all manifold though? Because there are some manifolds that work better under boost than other. I still say test it since you have the equipment

which manifolds work better under boost and not NA?

@@richardholdener1727 dual plenum. Not v8 dual plenum, wrc style dual plenum. Regardless Test it if nothinf changes then you are right and im wrong

the intake will run this rpm with many different camshafts-reflected wave is VERY rpm specific

@@richardholdener1727 and if the camshaft and intake are matched it will run better.....as we seen with the short runner intakes paired with this camshaft.

you just said you don't pair rpm with the intake-but you do

@@richardholdener1727 the intake gets paired with the camshaft. It doesn't do much good to have a 8k rpm cam wuth a 6k rpm intake.....as you just showed us.

When I make an incorrect statement-I own up to it, but keep digging those heals in and good luck! For everyone else-You DO choose the intake for the desired RPM range.

At least where on the same page

@@6oblintv not trying to knock him for the testing but it just seems skewed, every NA guy that goes max effort will use a Holley. Seen time slips showing slower Eats with this manifold too

@@All_Stock_Garage with the trinity having shorter runners I don’t see how it keeps up down low unless it’s the tune. That just tells me the low Ram vs the trinity (low ram) would be even better up top

Have you ever seen a direct back to back test of these manifolds-cuz I have not. These results are exactly what should be expected from anyone that understands intake design-a longer runner makes more down low, the shorter makes more on top. what is not to understand?

@@richardholdener1727 "What is not to understand?" Hell yeah brother.