320 throttle bodies

Post Fri May 27, 2005 11:45 pm

anyone fitted throttle bodies to a 320? or any 6 cylinder? ive seen them i someone sig?

Post Sat May 28, 2005 8:26 am

someones got them on a 325i and someone is planning the fitment of them to a 3.5 m30..

no point putting them on a 2.0 tho

Post Sat May 28, 2005 8:59 am

I'm making some for my 325 turbo too

I think there is a point in putting them on any engine if only for improved throttle response and idle

Post Tue May 31, 2005 8:41 am

any good engine with throttle bodies should make 100bhp per litre so ide say it is worth it?

anyone got any pictures of some fitted

Post Tue May 31, 2005 1:36 pm

So you're saying if I put throttle bodies on my 2.7 I SHOULD get 270bhp!
I doubt it.

Here you go this guy in america is doing them diy stylee with GSXR 600 TB'S

Oh and direct nitrous

Post Tue May 31, 2005 1:48 pm

AndyBird wrote:any good engine with throttle bodies should make 100bhp per litre so ide say it is worth it?

anyone got any pictures of some fitted

You are joking aren't you?! :lol:

Seriously, you're saying that and engine, 2v or 4v will make 100bhp/litre.

I'd say a more realistic figure for a 2v engine would be 75bhp/litre (taken from Dave Walkers Engine Management book).

Post Tue May 31, 2005 8:49 pm

Widge wrote:So you're saying if I put throttle bodies on my 2.7 I SHOULD get 270bhp!
I doubt it.

Here you go this guy in america is doing them diy stylee with GSXR 600 TB'S

Oh and direct nitrous

thats all i'v got to say realy.

Post Tue May 31, 2005 8:50 pm

AndyBird wrote:any good engine with throttle bodies should make 100bhp per litre so ide say it is worth it?

anyone got any pictures of some fitted

Post Tue May 31, 2005 9:16 pm

peugeot 206 1.9 litre engine on throttle bodies is 190 bhp

i know thats only 1 example

proper throttle bodies can give a very good gain

Post Tue May 31, 2005 9:20 pm

yeah i know - end of the day tho its limited by the engine...

320 isnt worth doin shit all with.. enjoy it for its baby bro to the 2.5 status despite the fact it has the same/worse drink issues

Post Tue May 31, 2005 9:21 pm

im gonna find the bit i was quoting about the throttle bodies .

i retract my prevoius statement for the time being

Post Tue May 31, 2005 9:59 pm

Jhonno wrote:
320 isnt worth doin sh*t all with.. enjoy it for its baby bro to the 2.5 status despite the fact it has the same/worse drink issues

want a race like jhonno??? my 320i against you'r 325

Post Tue May 31, 2005 10:01 pm

craigieeb wrote:
Jhonno wrote:
320 isnt worth doin sh*t all with.. enjoy it for its baby bro to the 2.5 status despite the fact it has the same/worse drink issues
want a race like jhonno??? my 320i against you'r 325

i dont have a 325i..

Post Tue May 31, 2005 10:04 pm

bugga how much of a twat do i feel now :lol:

Post Tue May 31, 2005 10:05 pm

:rotfl:

No worries dude

Post Tue May 31, 2005 10:37 pm

AndyBird wrote:peugeot 206 1.9 litre engine on throttle bodies is 190 bhp

i know thats only 1 example

proper throttle bodies can give a very good gain

Wasn't aware that there was a 1.9 206, unless you're refering to the diesel.

Either that or you're talking about the S16 engine'd GTi cars which have.....4valve heads, unlike the M20 which have 2valve heads.

You're right that you can gain by switching to TBs, but there's not a huge amount of point unless you're trying to regain something like a smooth idle and drivability when you've got high lift/overlap cams fitted, or in my case, trying to sharpen the throttle response taken by the turbos.

Also worth bearing in mind that TBs are often acompanied by new engine management which in itself can give decent gains.

Post Wed Jun 01, 2005 2:16 pm

Jhonno wrote: 320 isnt worth doin sh*t all with.. enjoy it for its baby bro to the 2.5 status despite the fact it has the same/worse drink issues

i happen to think that the 320 is an engine worth doing stuff too, and I intend to do just that, as soon as i stop spending all my cash on fuel

Post Wed Jun 01, 2005 3:13 pm

mr bird sir, engine tuning is a bit more involved than just whacking ITB's on and magically making the 100bhp/lite figure.

not saying its totally impossible but its going to require a bit more work than sticking ITB's on.

i want itb's dont expect to suddenly make 250bhp though ...would be nice.. mind you i want them more for the sound than anything else

Post Wed Jun 01, 2005 10:26 pm

Rearwheel_nick wrote:mr bird sir, engine tuning is a bit more involved than just whacking ITB's on and magically making the 100bhp/lite figure.

not saying its totally impossible but its going to require a bit more work than sticking ITB's on.

i want itb's dont expect to suddenly make 250bhp though ...would be nice.. mind you i want them more for the sound than anything else

im more than aware of this dont think im a newbie... well rephase that im a newbie to N/A cars spending the last 5-6 years on 200sx S13, S14, Silvia S12 and Skyline R33 GTST

the 206 i was talking about was down at a lad i knows place JAmsport in northampton may have been a 2.0?

Post Wed Jun 01, 2005 11:18 pm

If it was a 2.0 then it was most probably the s16 engine and as such does have 4v per cyl and so it's quite feasible to make 100bhp / litre in road going trim, but the point people are making is that not all engines have the benefit of 4v heads and the M20 is one such engine.