f4r torque ceiling

[George k]

Ben R - years ago in F3 I was involved in a project where we used a flexible diaphragm at the opposite end of the plenum to the air intake as a means of damping pulses - I think it helped a bit, but the scrutineers were convinced it was a fudge to get round the restrictor regulations - might this idea be of any use?

 

[Phill1978]

but all this is pure b****cks to increase torque past the celling all you need is ladders and a 20p resistor from ebay

 

[BenR]

The manifold will come with cling film and a resistor from whatever toy i have laying about.

George, i will not be employing a pulse plate or any forms of, i will simply incorporate the deflectors into the plenham roof. Cost and testing will not help manifold pricing which is all important in this area. But thanks for bringing up the idea.

 

[edde]

Ben, I take it the system will fit any 172/182 then?
What about other none Clio ie Megans etc wil it be retrofitable?

 

[BenR]

It will fit 172/182....but depending on space i'm deciding whether or not to include a new radiator as there is literally very little space, and on our low RPM engines, short inductions lengths, even with 2nd order harmonics reduced/eliminated, can give disappointing results.

It will only fit the F4R engine as bolt patterns are different, although port spacings are exactly the same between F7R and F4R. If F7 units are required, i can apply the appropriate flange to it.

If your referring to putting it into other cars, then it will be the on the customers work to make it fit, i cant make something to fit everything.

 

[stan*]

bhp = workdone = force*distance = torque.

cummon Ben! BHP=RATE of work done. work done*distance=torque. power =torque*rpm or (2*pi*N*T)/60

your slacking son!

 

[BenR]

get back to those textbooks stan, your not correcting me fast enough.

 

[rmccardal]

And you get to bed !!

 

[stan*]

get back to those textbooks stan, your not correcting me fast enough.

i have a hard job keeping up thats why! joke!

im actually tooooo busy reading all my books!

in all honesty i wish i had time to read books....everythings flat out at the moment....

 

[edde]

It will only fit the F4R engine as bolt patterns are different, although port spacings are exactly the same between F7R and F4R. If F7 units are required, i can apply the appropriate flange to it.

Will this give the same sort of gain/potential as the f4R engine has ie over 200hp with cams and head work or is the head etc on the f7R still not good enough. I remember someone saying over 200hp on the stock manifold without going to 8k on the f7R was impossible.
I take it a new radiator would be required for the f7r as well?

 

[BenR]

Gains with a straight manifold from an F7R700 or 710 will not be as large, its stock potential isnt as good because of head/cam/CR combinations.

On the stock manifold, you will have to pull some decent rpm to make 200+bhp.

A new rad will be required, there is evel less space on MK1 clios.