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

DISCUSSION => Engine + Driveline => Topic started by: deekay on March 03, 2010, 10:35:42 PM

Title: anyone have specs on the stock camshafts?
Post by: deekay on March 03, 2010, 10:35:42 PM

need to know if they're both the same, and at least duration/lift would be nice.

Title: anyone have specs on the stock camshafts?
Post by: dsm2002 on March 03, 2010, 10:59:50 PM

They are different part numbers and here are the specs according to the Catcams website.

Application: O.E.M.
Duration [0.1mm+cl]: 255/255°
Duration [1.0mm+cl]: 207/207°
maximum lift [cl=0]: 9.70/9.70mm
Lift at TDC [cl=0]: 0.90/0.65mm

Title: anyone have specs on the stock camshafts?
Post by: deekay on March 03, 2010, 11:03:20 PM

so they're the same other than max lift.

very interesting, thank you.

Title: anyone have specs on the stock camshafts?
Post by: flyinglizard on March 04, 2010, 05:25:28 PM

I measured them to be the same .

Title: anyone have specs on the stock camshafts?
Post by: dsm2002 on March 04, 2010, 06:48:38 PM

Quote from: deekay;88828

so they're the same other than max lift.

very interesting, thank you.

max lift is the same, lift at TDC is different

Title: anyone have specs on the stock camshafts?
Post by: deekay on March 04, 2010, 09:34:18 PM

Quote from: dsm2002;88885

max lift is the same, lift at TDC is different

my mistake. so the intake cam has the same start and endpoints but a more convex ramp? am i understanding this correctly?

Title: anyone have specs on the stock camshafts?
Post by: dsm2002 on March 04, 2010, 10:32:26 PM

I'm thinking more likely cam timing relative to TDC than a different profile. Someone may know for certain.

Title: anyone have specs on the stock camshafts?
Post by: flyinglizard on March 04, 2010, 11:12:23 PM

It looks like the exhaust cam center is retarted a little. Maybe 3degrees.  from zero. Hard to say without doing a full cam degree thing.
  I looked the first day for this info.  
 The cam ramps ar r the same, every thing is the same. I am sure that you could use either one either place if you can time them. MM

Title: anyone have specs on the stock camshafts?
Post by: deekay on March 05, 2010, 01:26:07 AM

ok, understood. given that the m42 has adjustable cam sprockets this invalidates my idea.

mentioned this on r3v earlier tonight- vw and nissan 16v guys have bought a "sport" cam for the intake and then swapped the intake cam over to the other side because it was hotter than the exhaust cam.

looks like this idea's a no-go for us, but i thought it worth investigating.

delta regrinds it is (after i get more weight reduction done), i'm sure the ITBs will love them :)

Title: anyone have specs on the stock camshafts?
Post by: 4banger on March 05, 2010, 01:57:23 AM

deekay the guys at delta will treat you good. the have done all my cam work for my m42's and m10's. my 286's for solid liter conversion ran me $500 for the pair and i had them back in under 15 days.

Title: anyone have specs on the stock camshafts?
Post by: colin86325 on March 06, 2010, 10:17:31 PM

The E36 m42 cams are different than the E30 cams, though when i was shopping for cams I didn't see a distinction made.