Whats the best NA IM design??
#1
Father of the 00 VI
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Whats the best NA IM design??
I want to make a upper that will bolt to a 3.5 lower. I have some ideas ,IM leaning towards i design like the hondas have but Im thinking alitle shorter than that because the lower intake will still be there.
If you have pics or have a little knoledge in this area please give me some ideas.
Im thinking flange matching the lower maybe 350z lower or 03 max lower,with bent or straight plenums very short with the box welded to them. Kinda like honda design.
Im looking for 4000rpm+ power ,i dont car how much it takes below there .
If you have pics or have a little knoledge in this area please give me some ideas.
Im thinking flange matching the lower maybe 350z lower or 03 max lower,with bent or straight plenums very short with the box welded to them. Kinda like honda design.
Im looking for 4000rpm+ power ,i dont car how much it takes below there .
#7
Father of the 00 VI
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Originally Posted by IceY2K1
This is probably as close to individual venturi TBs as you can get from Veilside for the Supras:
#8
Slap a TB on the one side and you're in business.
Originally Posted by krismax
Looking at this one i may weld air horns to a lower and weld a box on the ir horns ,make it one piece with lower. I notice the boxes seem to taper down even on the 00 vi it does that i wont be able to duplicate that.
#15
#16
The 350Z/G35 intake manifolds are engineering works of art with some serious R&D to hit 100+% VE from 4000-6400rpm, even 105% at 5600rpm. So, somebody with a welder and some spare time on their hands isn't going to just magically create a better version.
Since we most likely can't fit a 350Z manifold under the hood, we probably can't fit the SSR manifold either, but maybe something similar that produces better then stock FWD manifolds could be found with some research/trial/error.
Since we most likely can't fit a 350Z manifold under the hood, we probably can't fit the SSR manifold either, but maybe something similar that produces better then stock FWD manifolds could be found with some research/trial/error.
Originally Posted by TILLEYS99
SSR is junk according to the 350z guys.....No significant gains for the 1g it costs
#17
Jeff,
WTH, did that article have to do with intake manifold design?
HOWEVER, man what a fascinating read. I like the valve spring pressure vs. wear and intake port volume vs. TB volume tips. Makes me want to rip off the heads and send them out, but that's only if I stayed NA and would be worth it.
WTH, did that article have to do with intake manifold design?
HOWEVER, man what a fascinating read. I like the valve spring pressure vs. wear and intake port volume vs. TB volume tips. Makes me want to rip off the heads and send them out, but that's only if I stayed NA and would be worth it.
Originally Posted by Jeff92se
#19
VQ30DEK is 222hp(227hp) from 3L without VTCs.
J/K...I've always liked the turbo SHO with manual trans.
J/K...I've always liked the turbo SHO with manual trans.
Originally Posted by Jeff92se
The 1st gen Yamaha SHO got 220hp from 3.0 liters and no VTCs. Short and long runners. Oh well...
#20
Ford did 220hp in what? 1990? We had what? 160hp? But yeah, the only thing good on those SHOs was the engine.
Originally Posted by IceY2K1
VQ30DEK is 222hp(227hp) from 3L without VTCs.
J/K...I've always liked the turbo SHO with manual trans.
J/K...I've always liked the turbo SHO with manual trans.
#22
Here's another good read, that also mentions the variable runner length technology in the BMW 7 series engine.
http://www.canadiandriver.com/articles/jk/020213.htm
http://www.canadiandriver.com/articles/jk/020213.htm
#23
Haha...VANOS man...that isn't going to happen on anything other then a BMW.
Originally Posted by Stephen Max
Here's another good read, that also mentions the variable runner length technology in the BMW 7 series engine.
http://www.canadiandriver.com/articles/jk/020213.htm
http://www.canadiandriver.com/articles/jk/020213.htm
#24
The Nissan CVTC is essentually the same thing as BMW VANOS. They're just setup a little differently. And the dual VANOS on the S54 uses 100bar oil pressure intead of engine oil pressure that the earlier VANOS uses.
#25
VANOS wasn't the right term, BMW doesn't use a throttle plate and uses the height of the intake valves to control airflow plus on their newest cars(745i, 545i) the infinitely variable intake,
WAY way beyond what anyone here is going to ever care about copying in an intake manifold design.
BMW's variable intake manifold uses a rotating internal centre section that can continuously vary the length of the intake passages. With this design, the computer can position the centre section for optimum volumetric efficiency at any engine rpm. Simple but effective.
#26
the jim goughary built vq30 on nissanperformancemag.com is using a chopped maxima intake manifold with only the runners (4th gen USIM) bolted up to the lower IM and a custom welded manifold tube that tapers off to one side much like the veilside one.
He has individual throttle body's to that setup now with the 02+ chopped maxima manifold
He has individual throttle body's to that setup now with the 02+ chopped maxima manifold
#27
Originally Posted by Larrio
the jim goughary built vq30 on nissanperformancemag.com is using a chopped maxima intake manifold with only the runners (4th gen USIM) bolted up to the lower IM and a custom welded manifold tube that tapers off to one side much like the veilside one.
He has individual throttle body's to that setup now with the 02+ chopped maxima manifold
He has individual throttle body's to that setup now with the 02+ chopped maxima manifold
#28
Originally Posted by Jeff92se
The 1st gen Yamaha SHO got 220hp from 3.0 liters and no VTCs. Short and long runners. Oh well...
Originally Posted by VQuick
Well Ford didn't do it, Japanese Yamaha engineers did it....
#29
Porsche Cayenne also has variable length IM:http://content2.eu.porsche.com/prod/..._intake_system
#31
So far, we've got
1)Myself posting highly boosted IMs, probably don't apply.
2)Jeff posting links to engine design, but no intake manifold info.
3)Stephen posting HIGHLY complex variable length intake manifold designs on NA cars.
Hell, well at least we're getting closer to krismax original question.
1)Myself posting highly boosted IMs, probably don't apply.
2)Jeff posting links to engine design, but no intake manifold info.
3)Stephen posting HIGHLY complex variable length intake manifold designs on NA cars.
Hell, well at least we're getting closer to krismax original question.
#32
WTF? Didn't I just mention the SHO????????????????????? A varible type IS going to be the best na design.
So what are you looking for? The best non-varible design? Because that is a little different. And I did post a pic of the M3 na intake.
So what are you looking for? The best non-varible design? Because that is a little different. And I did post a pic of the M3 na intake.
#34
You're right, except you didn't post anything on HOW the SHO IM is designed and that BMW pic is pretty non-descriptive since you can't even see all the runners or how it's laid out.
The best NON-COMPLEX, ie doable homemade manifold. I agree, it's not going to be the "best possible", however something that surpasses OEM with little top-end restriction to 8Krpm.
The best NON-COMPLEX, ie doable homemade manifold. I agree, it's not going to be the "best possible", however something that surpasses OEM with little top-end restriction to 8Krpm.
Originally Posted by Jeff92se
WTF? Didn't I just mention the SHO????????????????????? A varible type IS going to be the best na design.
So what are you looking for? The best non-varible design? Because that is a little different. And I did post a pic of the M3 na intake.
So what are you looking for? The best non-varible design? Because that is a little different. And I did post a pic of the M3 na intake.
#36
Any non varible manifold is going to be a trade off. The sho one is "probably" the easiest of the complex ones to copy (if possible). Or just use a 2000 maxima manifold.
What do you want? low end or high end? Very difficult to have both with the engine arrangement/hood/non adjust type.
What do you want? low end or high end? Very difficult to have both with the engine arrangement/hood/non adjust type.
#37
Originally Posted by IceY2K1
VANOS wasn't the right term, BMW doesn't use a throttle plate and uses the height of the intake valves to control airflow plus on their newest cars(745i, 545i) the infinitely variable intake,
#38
So, you're saying the new 745i doesn't use VANOS?
Originally Posted by SR20DEN
All current VANOS eqiuped BMW engines still have throttle bodies. This includes the E46 M3, E39 M5 and even the new E60 M5. The technology you speak of is called valvetronic and is used in the E65 760iL and all of the new 4.5 liter V8s (745, 545). It may also be used in the new E90 M3s.
#39
The E65 745 does also have dual VANOS. So I should have said VANOS only BMWs still have throttle bodies. It is the valvetronic technology that negates the use of throttle bodies.
http://www.bmwusa.com/vehicles/7/745iSedan/features.htm
http://www.bmwusa.com/vehicles/7/745iSedan/features.htm