Originally Posted by
cadet x
howdy,
im new to the forum. i bought a '91 535 with 167k on the motor. looking to do an overhaul on the head/valvetrain. could you fellas give me some advise? what parts do you expect will need to be changed? i've read that the cams are usually worn at this point; im thinking to raise the rev limit on it and increase the overall reliablility because i expect to put another 100k on it... also, comments on valve work would be appreciated. ive seen on bmwe34.net reccommendations to enlarge the valaves, 3 angle jobs, porting the intake manifold, etc. can anyone comment on the effectiveness?
thanks
ken