msm cam

[jonnyshaw49]

hi just been searching for msm cam but nothing found, could someone tell me what an msm cam is , i know its something to do with a 285 cam but whats actually different and what are the advantages/disadvantages, and where do you get them from? also what is the difference in the piper 285 and 300 cam on the website it states ones a track cam and one a rally cam and the durations etc are different but what does this change about the way the engine revs? thanks

[philr5t]

hi just been searching for msm cam but nothing found, could someone tell me what an msm cam is , i know its something to do with a 285 cam but whats actually different and what are the advantages/disadvantages, and where do you get them from? also what is the difference in the piper 285 and 300 cam on the website it states ones a track cam and one a rally cam and the durations etc are different but what does this change about the way the engine revs? thanks


i think the msm cam was re profiled to a 293 degrees instead of a 285 may take you quite a while to find one but may be worth a chat with big jim racing as i think he had something to do with these cams

[Sparkie]

msm, was a piper 285 @110deg.
piper then changed their original piper 285 @112deg to the same spec as the msm one.
this gave slightly more overlap/scavenging.

the piper 285 is a punchy cam, whereas the piper 300 have a longer flatter torque curve - ideal for tracks.......

[tiff_lee]

the piper 285 is a punchy cam, whereas the piper 300 have a longer flatter torque curve - ideal for tracks.......

Is the 285 a good choice for road & track use then supposed to a 300 mainly for track?

[Woznaldo]

Wouldn't a long flat torque curve be better for the road and not so important for the track?

[Big Jim]

[quote=Sparkie;182485]msm, was a piper 285 @110deg.
piper then changed their original piper 285 @112deg to the same spec as the msm one.
this gave slightly more overlap/scavenging.

This may have become the case but original spec was 108deg

[Sparkie]

interesting, makes you wonder who he talked to at the time.....

i know i did a cam called a 1011@108deg around that time, which was basically a piper 300 duration with a piper 285's lift......

[jonnyshaw49]

so in theory if u buy a piper 285 cam new it will be an msm cam?