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Throttled bodied Clios'



'Bugger me with a fish fork' they go don't they! Had the lucky chance of sampling 'thejesus'es 172 with bodies today, not in the drivers seat obv but in the hands of a very experience pilot (no names mentioned), and mother of god, its quick! Jon my friend thats one quick motor you have!
was a pleasure to meet you and Laura today, hope you made it back to Cheshire ok, and you've just added another item to my wish list.

And treat the Laguna well, I'll need it soon!
 
he's got the full on, 4 throttle bodies conversion. but trust me, it sounds the nuts with the filters off!!!!!
 
Filters on or off doesn't make a difference to the sound.

It's my old car and I had the work done @ GDI.
 
ha right, Andy and I went for a drive in it this afternoon (sorry Jon) as I've never experience throttle bodies. I have to say at the top end with the filter off (as in, in the passenger footwell and just the trumpets) it totally screams at the top end, amazing sounds! Totally different to having the filter on.
 
  williams and trophy
lol.....he bottled comparin against a quick car last nite tho ;)



that verbal limiter needs tweekin mate :)
 
  RenaultSport clio 172 mk2
There's nothing that you can do with individual throttle bodies that you couldn't do with a single-throttle body manifold.

Back in the days of carburettors separate twin-throat sidedraughts were fundamentally better than a single carb sitting on top of a manifold because the fuel was added to the air at the carburettor so you had to worry about poor running caused by cold manifolds during cold starting and slow air flow and flow reversals in the manifold at low air speeds causing the fuel to fall back out of the air before it got to the engine.

But when its injectors adding the fuel virtually at the valves there isn't really much difference between using one separate throttle body for each intake and using a single one.

Most of the reason separate throttle body equipped Clios are better at producing power than standard Clios is that the standard Clio manifold is restrictive to help low end torque. You could get just as much more power with a fabricated intake manifold that was less restrictive.

And you could get both more power AND have as good low end torque and driveability with a more sophisticated intake manifold. For example you could have two pipes feeding each cylinder, one short and one long, that together flowed more air than the standard manifold runners. The short ones would have a valve that only opened at high speeds and high loads, so in low speed and low load situations all the air would have to flow down the longer runners and there'd be good torque at low speeds.

It'd be a helluva job to fabricate something that complicated on the exhaust side. But the gases are cold on the intake side, so it could be made out of plastic. It'd only have to be strong enough to not collapse under vacuum.
 

ChrisR

ClioSport Club Member
There's nothing that you can do with individual throttle bodies that you couldn't do with a single-throttle body manifold.

Back in the days of carburettors separate twin-throat sidedraughts were fundamentally better than a single carb sitting on top of a manifold because the fuel was added to the air at the carburettor so you had to worry about poor running caused by cold manifolds during cold starting and slow air flow and flow reversals in the manifold at low air speeds causing the fuel to fall back out of the air before it got to the engine.

But when its injectors adding the fuel virtually at the valves there isn't really much difference between using one separate throttle body for each intake and using a single one.

Most of the reason separate throttle body equipped Clios are better at producing power than standard Clios is that the standard Clio manifold is restrictive to help low end torque. You could get just as much more power with a fabricated intake manifold that was less restrictive.

And you could get both more power AND have as good low end torque and driveability with a more sophisticated intake manifold. For example you could have two pipes feeding each cylinder, one short and one long, that together flowed more air than the standard manifold runners. The short ones would have a valve that only opened at high speeds and high loads, so in low speed and low load situations all the air would have to flow down the longer runners and there'd be good torque at low speeds.

It'd be a helluva job to fabricate something that complicated on the exhaust side. But the gases are cold on the intake side, so it could be made out of plastic. It'd only have to be strong enough to not collapse under vacuum.

*cough* hence BenR and his ne wproduct arriving soon :p (I'm guessing)
 
There's nothing that you can do with individual throttle bodies that you couldn't do with a single-throttle body manifold.

Back in the days of carburettors separate twin-throat sidedraughts were fundamentally better than a single carb sitting on top of a manifold because the fuel was added to the air at the carburettor so you had to worry about poor running caused by cold manifolds during cold starting and slow air flow and flow reversals in the manifold at low air speeds causing the fuel to fall back out of the air before it got to the engine.

But when its injectors adding the fuel virtually at the valves there isn't really much difference between using one separate throttle body for each intake and using a single one.

Most of the reason separate throttle body equipped Clios are better at producing power than standard Clios is that the standard Clio manifold is restrictive to help low end torque. You could get just as much more power with a fabricated intake manifold that was less restrictive.

And you could get both more power AND have as good low end torque and driveability with a more sophisticated intake manifold. For example you could have two pipes feeding each cylinder, one short and one long, that together flowed more air than the standard manifold runners. The short ones would have a valve that only opened at high speeds and high loads, so in low speed and low load situations all the air would have to flow down the longer runners and there'd be good torque at low speeds.

It'd be a helluva job to fabricate something that complicated on the exhaust side. But the gases are cold on the intake side, so it could be made out of plastic. It'd only have to be strong enough to not collapse under vacuum.

*cough* hence BenR and his ne wproduct arriving soon :p (I'm guessing)
306 s16 have the vairable tract inlet manifold, the mechanism that switchs between the two inlet lengths was always breaking, lots of people are using the inlet manifold of a gti 6 now for slightly better power and smother power delivery.
 
  Fiat Coupe 20v turbo
hmmm, taking customers out for a thrashing in your car....hope Andy is giving you some discount Jon!
 
  AMV8, Mk1 Golf
we were there when he took it out, he asked permission and jon handed him the keys.
Chris the covery was filthy restricting the air flow to the bodies, so it was taken off, cleaned and put back on :D
Nice to meet you too mate, cars lovely :)
 
'Bugger me with a fish fork' they go don't they! Had the lucky chance of sampling 'thejesus'es 172 with bodies today, not in the drivers seat obv but in the hands of a very experience pilot (no names mentioned), and mother of god, its quick! Jon my friend thats one quick motor you have!
was a pleasure to meet you and Laura today, hope you made it back to Cheshire ok, and you've just added another item to my wish list.

And treat the Laguna well, I'll need it soon!

Was good to finally meet you Pacey, glad you enjoyed the car mate, take it the credit card or cheque book is to be called into action? lol

Drive back was fine, was a little slower than on the way down though hehe. One good thing was the fuel consumption... or lack of! Fook me it makes me want a run about even more, I didn't realise how thirsty mine was... then again I dont care, it's not designed for trips to the tip hehe.

Well, I hope Mark's not been left carless, so if you're reading mate just take mine for the week, I trust you! :D
 
cannot wait to see that finished... I'll need a hell of a lot more mods to even see that thing though... not fair, will be miles more powerful and less weight, not to mention laughing gas lol
 
  Dirty E91
There's nothing that you can do with individual throttle bodies that you couldn't do with a single-throttle body manifold.

Back in the days of carburettors separate twin-throat sidedraughts were fundamentally better than a single carb sitting on top of a manifold because the fuel was added to the air at the carburettor so you had to worry about poor running caused by cold manifolds during cold starting and slow air flow and flow reversals in the manifold at low air speeds causing the fuel to fall back out of the air before it got to the engine.

But when its injectors adding the fuel virtually at the valves there isn't really much difference between using one separate throttle body for each intake and using a single one.

Most of the reason separate throttle body equipped Clios are better at producing power than standard Clios is that the standard Clio manifold is restrictive to help low end torque. You could get just as much more power with a fabricated intake manifold that was less restrictive.

And you could get both more power AND have as good low end torque and driveability with a more sophisticated intake manifold. For example you could have two pipes feeding each cylinder, one short and one long, that together flowed more air than the standard manifold runners. The short ones would have a valve that only opened at high speeds and high loads, so in low speed and low load situations all the air would have to flow down the longer runners and there'd be good torque at low speeds.

It'd be a helluva job to fabricate something that complicated on the exhaust side. But the gases are cold on the intake side, so it could be made out of plastic. It'd only have to be strong enough to not collapse under vacuum.

*cough* hence BenR and his ne wproduct arriving soon :p (I'm guessing)

Yeah when is this arriving?
 


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