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Here we go again...........
http://www.motorsport22.freeserve.co.uk/http://www.motorsport22.freeserve.co.uk/
Funny they dont mention the clio anymore??
I think we have scared away any potential LAD business. There was alad a while ago who said he had it but he disappeared quicky when we started to question the power output on his car.
LAD are partially to blame for there reputation they were asked if they would like to coe to a RR day (CLiosport would pay the RR bill for the car) but ehy said they would only do it for a massive amount £700 rings a bell.
They have a a bit of a reputation about claiming more output from there work in the past but real world dynos and races have proved there obviously not as powerful as LAD claim.
You can get 20~25hp from head work alone but LAD claim 200hp for a lot less than you can realy get 200hp. For 200 you need cams head work IK exhuast and remap.Quote: Originally posted by lagerlout1 on 17 May 2004
Not heard a good word about them.... all they seem to do to the Cup is put an (open) induction kit, an exhaust (just a backbox) and sprinkle some fairy dust on the engine. I know very little about engines, but is a bit of gas-flow work going to get you 20bhp???
But the biggest thing is they claim you dont need to reamp the car which sounds very dubious than 200hp is possible on the standrd programming but BenR will know more.
LAD it would seem do a bit of head work exhaust Ik and thats it getting 200hp seems unlikly unless you use the idea that 172 make 172hp stock and than transmission losses are 25%
LOL
20-25bhp you wont get from headwork alone sadly, its simply down to the inlet manifold and plenham design. Its pretty much THAT bad.Quote: Originally posted by edde on 17 May 2004
You can get 20~25hp from head work alone but LAD claim 200hp for a lot less than you can realy get 200hp. For 200 you need cams head work IK exhuast and remap.Quote: Originally posted by lagerlout1 on 17 May 2004
Not heard a good word about them.... all they seem to do to the Cup is put an (open
But the biggest thing is they claim you dont need to reamp the car which sounds very dubious than 200hp is possible on the standrd programming but BenR will know more.
LAD it would seem do a bit of head work exhaust Ik and thats it getting 200hp seems unlikly unless you use the idea that 172 make 172hp stock and than transmission losses are 25%
Oh, and yes.....remapping the fueling at a minimum is near essential as you can pickup an astonishing amount from that along on a std engine.
[Edited by BenR on 18 May 2004 at 3:05am]
Just let me get this straight in my mind the intake manifold is the bit which says Renault Sport on it and the pipes which bend down from this to the intake to the head are refered to as the plenham? (Ok so 90degrees of the bend are on the Renault sport bit but)
If so whats the exhaust manifold like the 182 has a differnet one (longer runners I think joining up lower down. Does the exhaust manifold hold much potential power or is the 182 one more show than anything?
I know you cannot add up gains but what sort of power would you get from head work and or manifold/ plebham work and them both combined?
Thanks for any any answer in advance.
OK. Manifold simply means a whole made out of many peices, in this case its the entire inlet assembly moving from the manifold face to the throttle body.
A plenham is an assembly where a bunch of items meet or collect. In this case the plenham is the box with Renault Sport written on it.
The exhasut manifold on the 172 is pretty good, as is the one on the 182, i do not yet know just which one is better and where. Since the exhasut manifold has a much larger effect on power graph peaks and troughs than actual flow would suggest. The length of the primaries in this case dictates at what rpm the negative pressure portions of the exhaust slugs meet the positive fronts of another cylinders exhaust slug to pull it along.
Gain from the manifold and headwork, hard to say, dependant on the amount of flow development work put in.
The manifold alone on a std engine, with extensive work you could probably pickup about 10bhp. But when i say extensive work to the manifold i mean it, and im not about to just give that away. Is it worth it though, probably not since there are easier ways to get power.
But if your talking the ultimate limit to the engine power whilst having to retain the std manifold then about 210, possibly 220bhp is what your looking at as a realistic limit. But this isnt with a std engine remember, youd have to change alot including increasing the rod/stroke ratio to make use of it since the manifold is quite a poor design with the bend over the engine, then a turn again into the cylinder.
I know of NA B18 engines in the states running about 350bhp on a modified GSR manifold because itll flow more than any TB assebly.
Headwork alone, not much at all since your limits by the poor matching and flow of the std manifold, probably about 6-8bhp.
But couple the 2 at a reasonable level and about 210bhp is a realistic (note that means not going absolutely mental matching engine parts to the desired power delivey) limit to what your going to achieve with the OE manifold arrangement.
