bumping up the cam timeing?

[johndaroza]

Can you get more out of your 3'2 buy bumping up the timing a bit ?

[Flat6pac]

The high side of spec= torque at a lower rpm.
Bruce

[Walt Fricke]

Despite having different injections, I think the 3.2 cams are much like the 2.7 and 3.0s. Anderson reported that Porsche tried slightly more advanced and slightly more retarded timing as "stock" over these models, and by the 3.2s decided that in the middle of the workable range was the best.

Based on comparing my 3.0's chassis dyno results with that of a bunch of 3.0s owned by buddies (we had a dyno session), I'd set mine at the torque end of the spec and it appears most of them had set it at the HP end, and I had a bit more peak torque and they had a bit more peak HP.

But little enough that I think it not worth staying awake at night pondering.

[johndaroza]

ok thanks for the info that works for me I am runing a 20/21 web cam chip ssi headers and some lighting to the rotating mass but stock valves and staying at the 6500 rpm range.

[T77911S]

if your stock setting( just as an example) is 2mm lift at TDC overlap, increasing the lift to 3mm advances the cams (the valve opens sooner so the lift is greater at TDC). reducing lift to 1mm retards the cams, in relation to the stock setting.
one way to check how far you have moved the cams is to go back and rotate the crank until you come back to the stock 2mm setting, then check the timing mark. (the TDC mark WILL NOT be lined up to the case) you can use the timing marks on the pulley to "degree" the pulley. like on mine, i have a 5 degree mark. i used that 5 degree mark to figure out that my cams had been advanced about 15 degrees by marking the pulley every 5 degrees, which if i remember, the 5 degree mark was 5mm from TDC.