M42club.com - Home of the BMW E30/E36 318i/iS

DISCUSSION => Engine + Driveline => Topic started by: wannam42 on June 04, 2010, 09:08:38 PM

Title: Stock cam data?? HELP! Need to compute DCR
Post by: wannam42 on June 04, 2010, 09:08:38 PM

Can anyone validate if these are correct. I found them at http://www.e30tech.com/forum/showpost.php?p=748554&postcount=39. Interestingly, Metric Mechanic's specs for the stock exhaust timing is 41° BBDC / 7° ATDC which is clearly different from the above spec. They did not, however, say whether it was the E30 or the E36.

E30:
Intake Open / Close

• 16° BTDC / 44° ABDC

Exhaust Open / Close

• 52° BBDC / 12° ATDC

E36:
Intake Open / Close

• 16° BTDC / 44° ABDC

Exhaust Open / Close

• 48° BBDC / 12° ATDC

Title: Stock cam data?? HELP! Need to compute DCR
Post by: DesktopDave on June 05, 2010, 09:01:35 AM

I don't know offhand.  That spreadsheet has a lot of data, but I'd be careful about trusting one source too much...and there are a lot of typos too.  That always makes me worry.