Why Use Only An Inlet Camshaft When Uprating?

[david932 0]

something i don't understand fully. i've modified engines in the past and uprated both camshafts but on this site i hear alot of talk about just uprating the inlet. i've never heard of this before. what are the reasons dor doing this?

[welshpug 1,632]

because its cheaper, and decent gains are still possible.

[petert 558]

It's because the exhaust port flows too well on the 16V head. The aim is to restrict the exhaust flow a bit to maintain the ideal 80% of inlet flow.

[Grez4 2]

Manufacturers spend thousands on r&d, so its not always easy to improve on, but then again they often have to take other things into consideration for a production car.

 

The proof is always in the testing

 

It all depends on:

 

*your planned use for the car

*your wallet

Edited March 17, 2007 by Grez4