Anyone here ever tried a bigger throttle body? never sen any info on this and was wondering. I know APR sells their intake manifold and offer a big throttle body with it but what about one for stock manifold? just wanted to throw that out there, anyone?

 

I don't think you'd flow enough through a stock manifold to get any advantage.

 

Bigger plenium, bigger tb. Nothing to be gained on a stock manifold

 

we have used the hemi 88mm throttle body on a homebrew manifold we made. tuned with unitronics. pretty cool, car makes good power but i couldnt tell you how much is credited to the manifold and tbody.

 

hemi tb on a homebrew manifold? pics?

I cant even find an IM or TB for the 225. I saw apr but i thought theirs was only for a 180

 

You'll probably find more DIY manifolds than production manifolds. Only other manufactured one that comes to mind at the moment is Dahlback. $$$$$$$$$, and one more $.

http://www.kmdtuning.com/store/index...&productId=167
yeah, scary....

Common thing to do is to reuse the runners and weld them to a revised log style plenum. Mainly because you don't need to do the work of figuring out how to aim the injectors at the intake port.

 

They are 225 based.

SEM
APR
RMR (works both ways)

The Hemi TB is a Bosch TB like ours, just that they are like 1/2 the price of a 5mm smaller R32 TB

 

wow 950??? pass.... lol

 

heh


hence the homebrew. maybe you won't get quite what the engineered manifolds free up, but you'll do better than stock.

I'd like to someday build a manifold with variable length runners. FYI, long runners = bottom end response, short runners = top end.

There is a lot of science to a tuned manifold, and a lot of potential. Check it out.
http://en.wikipedia.org/wiki/Variabl...ntake_Manifold

 

yeah only reason i would stay away from that is because you can make a plenum to big and hurt performance... there are TONS of different variables that go into plenum design and runner design.