cam lift on both cams is 7mm, valve lift is 11mm.
i know id need a DOHC engine to be able to alter cam timing to play with overlap just wondering if a bit of advance or retard on the cam may help with a turbo. sounds like it will be a case of pull the cam and re-install the standard one come time for boost.. or if i can afford it maybe a turbo specific cam.
cant see anything regarding rocker arm ratio in the specs for either cam, i copied the full specs of both cams into a post further up the page.. im mainly trying to gauge whether id need to get an adjustable pulley before installing one of these cams or not. folks on the US forums seem to think its near mandatory to install an adjustable pulley with any aftermarket cam but im not quite sold on it without a bit of info to explain why its required.
325i Turbo, Turbocharger Sizing?
Moderator: martauto
WMMotorsports
High lift cams and duration are great.
But only when you can use the effect. You are not going to reach 800hp with the stock cam. And your just wasting time running a big cam with a tiny turbo.
When setup jointly a cam can do wonders for a turbocharged engine.
But only when you can use the effect. You are not going to reach 800hp with the stock cam. And your just wasting time running a big cam with a tiny turbo.
When setup jointly a cam can do wonders for a turbocharged engine.
so what sort of size turbo would we be talking about for the 272 or 277 cams i have here be more of a help than a hinderance?
also just what would happen if one was run with a T3 family unit? would it be a big problem and cause a loss of power on boost, risk damage to the engine, etc? or would it just not be ideal but still workable? also what about altering cam timing with one of these cams? say like advance timing to boost power lower down and try to get a setup where the cam provides power before boost and then the turbo takes over in the mid revs?
also just what would happen if one was run with a T3 family unit? would it be a big problem and cause a loss of power on boost, risk damage to the engine, etc? or would it just not be ideal but still workable? also what about altering cam timing with one of these cams? say like advance timing to boost power lower down and try to get a setup where the cam provides power before boost and then the turbo takes over in the mid revs?
WMMotorsports
It would cause higher risk of reversion and thus drop in volumetric efficiency and higher risk of detonation thanks to higher temps pre compression.
a 277 cam and turbo is when you are looking for something in the 550+ range and would require you to get your head ported most likely to really use the cam.
a stock head M20 can easily do 500whp with enough boost.
a T3 family unit is not really a clear explanation of what you have as the T3 family is suprisingly big.
a 277 cam and turbo is when you are looking for something in the 550+ range and would require you to get your head ported most likely to really use the cam.
a stock head M20 can easily do 500whp with enough boost.
a T3 family unit is not really a clear explanation of what you have as the T3 family is suprisingly big.
think there would be any benefit using a 277 or 272 cam with a supercharger?
WMMotorsports
Depends on the cams specifics, i.e overlap and opening times.
i posted specs on both cams towards the top of the page. always liked the idea of going turbo but i wouldnt rule out supercharging either..
WMMotorsports