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quite a few knocking on the door of and pushing over 200bhp
The best means to it is a soddingly large bore exhaust, 63-65mm.....they dont like back pressure at all these engines. Modifications to the inlet manifold reap the largest reward from a single mod as this is the most restrictive factor. A filter setup like the maxogen or the new K&N remote filter setup, which looks quite nice.
Adding cams will help, but the std ones are technically capable of over 200bhp on their own. But with the restrictive inlet manifold itll help hold VE at a beneficial level at higher rpms, thus making it seem like they make more power.
Why is everyone so obsessed with 200bhp,it doesnt mean anytrhing,Ian at europarts who tune r5s always said the same he would have a car in take it on road test and it would be rapid then put it on the rollers and it would get 200bhp.Then hed get others in that wouldnt feel nothing special on road test then it would get 290bhp on the rollers
Quote: Originally posted by BenR on 04 August 2005
which will save you mega bucks, as labour is the killer. Youll need special tools to do a cambelt/cam/head swap change though.And i wouldnt reccomend trying to modify the manifold, as its quite easy to screw up.
What special tools do you need?
With the exception of power delivery and a usable torque graph, it would have to be a really really badly built/designed engine to make 290bhp and not be faster than a 200bhp one....unless its capacity (as such in the 5 gt) means that to make such a high output from a poor engine you will have to concentrate on high end efficiency, and TBH......ive not seen any development into the 5gt engine of anything but more boost. Engine efficiency of the 5gt is poor.
200bhp from a modern multivalve engine such as the 172s isnt hard, and one making say 220bhp will be faster at all points than one making 180-200bhp. But you will reach a point where a 2ltr 16v making 270-290bhp NA will be slower than a 200bhp version @ an rpm level where the torque from the high output engine will just not be as high as that of the 200bhp engine....this will be lower rpm regions though, and pretty useless when your trying to go fast.
Ex Ph-Quick
Think you mean the Typhoon I have ?
And afriad it MK1 172s only
Will be at RR day on sat for everyone to have a look at
Where can you get the inlet manifold and the throttle body done
Have you spoken to the Clio Cup teams (details from http://www.renaultsport.co.ukwww.renaultsport.co.uk) they will happily do mods for you and their labour costs arent all that high!
Even the parts that they could get hold of from Rsport are not restrictingly expensive. Have a look at http://www.renault-sport.com/en/boutique/catalogue/http://www.renault-sport.com/en/boutique/catalogue/http://www.renault-sport.com for more info.
Ex Ph-Quick
2005 Impreza WRX STI
and different injectors
Really?
The engine is a stock standard item with, stock inlet manifold, stock crank, stock pistons, stock rods, stock exhaust manifold (was the 172 now the 182 item). The only difference is that a straight peice of tube is used to the air filter. The exhaust is an orbisoud unit with a cat and isnt the be all and end all of exhausts. The Magneti Marelli ECU is an ignition component only, the stock ECU still runs the engine abiet with a slightly different map.
They only thing they do is make sure each engine makes the same power, i really wouldnt get hung up or waste any pennies on clio cup racer engine parts.
