Messages

1

Engine + Driveline / Over stretching TTY head bolts

« on: May 18, 2013, 08:18:33 AM »

When torquing down my head last night using lightly oiled OEM head bolts and washers, bolt #9 seemed to get very easy to turn on the last 90 degree step. I'm worried that I got a bad bolt and that it over-stretched. Has this happened to anyone? What are my options short of buying new bolts and redoing it?

2

Engine + Driveline / Time-Sert for timing chain guide in head?

« on: May 18, 2013, 07:40:57 AM »

Can I use a time-sert here?

3

Vendors / GB / Re: Mark D chip group buy opportunity

« on: May 15, 2013, 06:52:41 AM »

I'm interested!

4

Engine + Driveline / M44 timing case upgrade for M42

« on: March 04, 2013, 07:18:26 AM »

If someone has an early M44 (aka 96 or earlier), could they take a quick look to see if they have the necessary casting mount on their timing chain case?

5

Engine + Driveline / M44 timing case upgrade for M42

« on: February 21, 2013, 09:32:11 PM »

I'm the one who originally asked the question via PM.

All M42 use the same oil pump. The M44 uses a larger capacity oil pump.

Cross referencing the early M42, late M42, and M44, there are differences between them all:

• early M42 and late M42 share same cam sprockets (1121124733811311721887); M44 uses different ones (11361247951)
• early M42 and late M42 share same slide guide between the sprockets (11311721641); M44 uses a different one (11311743046)
• late M42 and M44 (11311743262) have a different chain tensioner guide than the early M42 (11311727342)
• late M42 and M44 (11311734694) have a different chain guide below the crank sprocket than the early M42 (11311721419)
• late M42 and M44 (11311739130) utilize a guide in place of the deflection wheel/gear found on the early M42 (11311727569)
• M44 uses higher capacity oil pump (it's thicker) than early and late M42
• the M44 uses a different crank position sensor than the early and late M42. The mount location is also different. Looking at pictures, M42 chain cases have a mount for the M42 sensor, however the M44 don't. Does anyone with a very early M44 have this mount?

Given I have to replace the chain case, I'm going to get a late M42 style at a minimum to get rid of the deflection wheel. However, if it's not too much hassle, I would love to use the M44 and get the larger oil pump.

Chain case part numbers:
early M42: 11141727191
late M42: 11141739699
M44: 11141739800


Here is a picture of the mount (where 11 fits into 1):


What can I do to use the M44 chain case?