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Alex_3589
12th November 2007, 14:00
Has anyone actually managed to put ITB's on a VTR?
Do they even make them to fit that engine?
Would be a pretty good and interesting set up i think with magnex system, milltek manifold and cat/downpipe, piper cam setup etc..

KamRacing
12th November 2007, 14:10
some good gains should be there to have. Are you going to get a set?

Raz
12th November 2007, 14:16
i was thinking this for my vtr in the future lol

What would a vtr owner have to do to notice anything? All the breathing mods?

What bhp roughly would you get out of them? on average (saying that before the 'how long is a piece of string' comment)

Alex_3589
12th November 2007, 14:25
some good gains should be there to have. Are you going to get a set?
Im thinking about it, I have a clio now and was considering putting a 2 litre engine in from the 172 and getting itb's for that but the bill would end up for over 7 grand in all.
Im getting a vtr when my insurance gets renewed. I know it would be easier to do the vts engine but as far as i can see not many people have done the vtr, im not into all out power/speed either. just looking for something different and think the vtr is a great place to start so looking for info on throttle bodies for the vtr engine....

rushy_23
12th November 2007, 14:27
Quite a few 8v TB setups Ive seen now pretty sure. Not sure on gains but I
imagine they would be pretty good.

Setups probably very similar to the 16v ones, uprated camshaft, headwork,
fueling, exhaust blah blah. Wouldnt mind one myself actually. Sure it would
be lots of fun.


Would be something cool to see Alex. But Ive seen similar project ideas in the
past but people tend to find better places to spend their dough!

KamRacing
12th November 2007, 14:30
to be honest you should be able to put in a nice lairy cam. The plastic inlet manifolds do not take too well to a cam with much overlap so the tb setup will allow you to get a more agressive cam and reap the benefits...

Alex_3589
12th November 2007, 14:36
well when i get the car iv got the money to do the exhaust straight away, manifold included, all the styling stuff i want, i have my stereo set up to go in, getting some speedline chrono's and eibach springs. then il start to save for the cam and look for a tb set up. who actually sells them?

Raz
12th November 2007, 14:40
im with you alex....havent seen that many tb'd vtr's, so i want to be different and do a 8v engine instead....

Alex_3589
12th November 2007, 14:44
yea, should turn out good. my mates vtr with a bmc, magnex and milltek manifold put out about 110bhp so with a nice cam set up and then throttle bodies it shoud be some good power.
im really into the turbo conversion too, love boost, but was kind of put off by the idea of the boost mashing the insides of the engine without a lot of work lol and cost.

Raz
12th November 2007, 14:48
yea, should turn out good. my mates vtr with a bmc, magnex and milltek manifold put out about 110bhp so with a nice cam set up and then throttle bodies it shoud be some good power.
im really into the turbo conversion too, love boost, but was kind of put off by the idea of the boost mashing the insides of the engine without a lot of work lol and cost.
i used to like turbo's....but gone off them and more towards throttle boddies tbh. Still love the bbrrrrrrrrrooooooooommmmmmm ttssshhh sound, but cos of having a turbo is too much....as leeroy said coming back from wakefield, if it didnt come out of the factory with a turbo, not worth doing....and i kinda agree with him :y:

rushy_23
12th November 2007, 15:24
If you spend good money on a good turbo setup then theres little that can go
wrong imo.
I think a lot of people get ideas of TBs, Turbos, SC in their heads and also really
believe word of mouth/bias opinions.

I think you have to see the setups and drive them to get an idea. I would love
the idea of a Turbo'ed 1.6 16v 106. But I just feel Turbos belong on Jap cars.
My baby 106 is all about NA :p

Raz
12th November 2007, 15:30
If you spend good money on a good turbo setup then theres little that can go
wrong imo.
I think a lot of people get ideas of TBs, Turbos, SC in their heads and also really
believe word of mouth/bias opinions.

I think you have to see the setups and drive them to get an idea. I would love
the idea of a Turbo'ed 1.6 16v 106. But I just feel Turbos belong on Jap cars.
My baby 106 is all about NA :p
Agree with the turbo comment bud :y: only for jap cars lol

Can i ask....what does NA mean? sorry to sound stupid

rushy_23
12th November 2007, 15:43
naturally aspirated

Raz
12th November 2007, 15:48
naturally aspirated
Right....and what does that have to do with tb's?

Sorry for being stupid :P

rushy_23
12th November 2007, 15:58
Practically all cars have a single TB as standardand from my general lack of
knowledge they are where the air is entered into the engine. Now if have 4
individual TBs fitted, you increase the amount of air that can be combined
with fuel to created more power.

Its the idiots guide and sorry I cant be more technical. But thats the jist.

Raz
12th November 2007, 16:08
Practically all cars have a single TB as standardand from my general lack of
knowledge they are where the air is entered into the engine. Now if have 4
individual TBs fitted, you increase the amount of air that can be combined
with fuel to created more power.

Its the idiots guide and sorry I cant be more technical. But thats the jist.
All i was after mate lol i wouldnt of understood the technical guide anyway lol

So how much power out of an 8v vtr, with everything you can possably do before thinking of the turbo/supercharger route, would i expect? im going to guess and say......130bhp?

rushy_23
12th November 2007, 17:22
All depends on how aggressive the cam is, and how far you go to uprate the
internals I guess. I can imagine 170bhp with a lot of £££ would be possible.

Raz
12th November 2007, 17:24
from a vtr engine?? really?

rushy_23
12th November 2007, 17:41
If Bic produced well over 200bhp from a 1.6 16v, I dont see why not!

But remember there are issues that have to be overlooked too like
huge loss in lower down power and very bad idle. Possibly fuel
economy?

bullit
12th November 2007, 19:21
from a vtr engine?? really?

just cam a vts engine. to get that from bodies will cost thousands. you may aswell charge it and have more bhp

AXracing
12th November 2007, 21:36
I had quite a nice 8V TU on throttle bodies. But it was only the 1360cc. Throttle bodies if done well give you more power across the bored and hp for hp can improve fuel economy. Though tuning a car for more power will always have down side with economy. My car was producing just over 160bhp but would only get 5 or 6 mpg when driven fast. This was more due to it having to run so rich as to stop the engine turning in to a bomb. It was actually using the extra fuel to cool the engine internals. Its like sweat on your skin. As the fuel coated the pistons, bores, head, valves and so on it would evaporate and so cool everything down. The only issues with that apart from it drank fuel was that it did not have a chance in hell of passing a MOT. Though swiftly unplugging a injector driver and running it on three would just about scrape a pass. Well sort of.