M42 timing components: 266k and counting

[Balleristic31]

~150k :/



This winter im doing the timing overhaul, along with the MM single row chain.

[Gerta]

Threehz - lotsa good stuff on M42club.com too ... you should check it out if you have not already.

[Threehz]

Well I just got my 318is this weekend with 217k on it so I'll try and get some pics up when I have a chance.

[Fourbanger]

This thread has inspired me to replace my tensioner this month along with the belts. Engine has over 200k and a limited maintenance history.

[Ryann]

And broken odometers not showing their true mileage?

lol

Good point. Or clusters that have been changed out altogether..

[shEck3lls0]

I think I might win with the most pointy sprockets. These are my old sprockets before I replaced mine.

[Jean]

^Awesome. How many DESTROYED m42 timing sets have we seen w/200k+? I'm thinking those cars have racked up some serious miles with a faulty original tensioner.

And broken odometers not showing their true mileage?

lol

[Mr.SWISS]

oh yea that and a turbo becauseracecar.

fuckin classsic.

[bflan2001]

i've done a lot of things to reduce rotational mass as well as weight in and outside of the engine and car, that's my focus for the build. i have no problem changing the chain every 50k as opposed to 100k, or whatever the recommended interval is.

metric mechanic has been doing this on high HP engines for many years with no failures (according to their website). and people were doing this on M10s decades ago on engines that saw way more HP than i'll ever have, so i'm not worried about a failure.

oh yea that and a turbo becauseracecar.

[dude8383]

remember, every bit counts with an m42.

http://m42club.com/forums/showthread.php?t=9812

http://m42club.com/forums/showpost.php?p=106670&postcount=29

[Ryann]

Which gains you 1 lb/ft of torque? I've read about this mod and find it funny, no offense. There are stock single row engines that have expensive 'upgrades' to two row chains and gears for strength and longevity. A couple examples I know of would be the w126 Mercedes 3.8l V8 and the Toyota 22r/e.

[dude8383]

Why?

Becauseracecar.


No but seriously, less rotational mass.

[Ryann]

yes i am replacing mine, going to a single row chain setup from another forum member.

Why?

[bmwm42]

i just pulled my timing cover at 191k and my sprockets look like hell compared to yours...i don't know the maintenance history, just picked the engine up a couple months ago.

Holy shit them teeth are pointy replace them rails crank sprocket chain

[bflan2001]

yes i am replacing mine, going to a single row chain setup from another forum member.