just throwing this one out there, but has anyone ever thought about putting GTi-R throttle bodies on a N/A SR20?
HHHHHHHHmmmmmmmm.........

Originally posted by FastNX
just throwing this one out there, but has anyone ever thought about putting GTi-R throttle bodies on a N/A SR20?
HHHHHHHHmmmmmmmm.........

Yep. I looked into it pretty heavily 3 years ago when building The Beast. I even had a set available to me.

Here are the problems:

The port shape is very different between the DE and GTi-R heads. They would require considerable reshaping and there would be some development work because the injectors are set at a different angle and therefore may not mix the fuel with the air properly (but I'm not certain). This is the main problem with doing this.

The manifold bolt patterns are quite different.

the beast, eh? I think I read about that on your site last summer
Cool, well it was worth a try!

Geo will remember this:
http://a9.g.akamai.net/7/9/5509/980128216/autospeed.com/site/autospeed/images/0801_4lo.jpg

The last I heard about this was someone was trying to get the manufacturer to make one for FWD SR20s. Not sure what happened to that.

The rest of the article can be found here: http://www.autospeed.com/A_0801/P_2/article.html

OHHHHHHHHHH!!!! Those are niiiiiice :). Yummy picture. Well Geo91SER, you answered the same question that has been nagging my brain for quite a long time. Thanks. Time to chop my intake manifold to make shorties.

Cossie

Now, I followed the link..... I need some money. About $1200.00. anyone?

Look at the Primera touring car motor. They used the gti-r block and head, used the quad throttle bodies, made it NA, 13:1 compression and some other tricks. If your willing to convert a gti-r to NA, use 300zx NA pistons, shave the domes, get aggressive cams(mechanical for the gti-r), some headwork and blueprint and balance the bottom end, you'd essentially have that motor. The touring car motor is rated 300hp, 290 tq? The NA -gti-r won't be that powerful, due to the lower/streetable compression. Just a thought.

If you've got even deeper pockets you could stroke it to 2.2L.

lol remember that pic....

but what his name...bigboost or something like that...is making the quad setup now. sure someone has put it on a NA car.

Originally posted by scmser
Look at the Primera touring car motor. They used the gti-r block and head, used the quad throttle bodies, made it NA, 13:1 compression and some other tricks. If your willing to convert a gti-r to NA, use 300zx NA pistons, shave the domes, get aggressive cams(mechanical for the gti-r), some headwork and blueprint and balance the bottom end, you'd essentially have that motor.

Not really. That engine is so heavily modified in ways that we don't even think about it isn't even funny. They even flip the head around so the intake is in the front and the exhaust is in the back. Then there is the 13:1 (or is that 15:1?) CR. Add some really big cams and hogged out ports. I'll bet that engine idles at about 3k rpms.

But, a GTi-R engine could certainly be made NA, but why would you? I still prefer NA, but even I wouldn't do that. :)

I knew it was very high compression, couldn't remember for sure though. But basically, for an all motor, non-vvl motor, the gti-r is the choice.

http://us1.webpublications.com.au/static/images/articles/i8/0801_4mg.jpg


how do these work.. i dont understand.. if this is an intake manifold... where is the intake tube

it sucks air through the rams, it doesnt need a tube, alot of more expensive cars ( ferrari, m3) cars have these, but the rams are attached to what looks like an air box, and i would assume the reason is because they are road going cars and need some sort of filtration for reliability issues

it would be a lot easier if you could get the cylinder head also. the ports are huge compared to a stock SR20DE. but for the intake manifold to fit, you would have to redrill holes for the manifold to bolt up. the ports are basically the same shape but the injector cutout on the stock SR20DE motor protrudes onto the cylinder head. you might wanna either weld up the cutout on blend the cutout to the GTI-R manifold. also the GTI-R has a small cutout for a vacuum line on the bottom of the port. you need to weld that up. last you need to port match the manifold to the head. like i said before, the ports are huge!

Can you not just take a gti-r head and put it on a SR20DE block and call it done :)