Forumsee logo
Forumsee » Cars » Brands and models » Read message
RSS: Subscribe to RSS

BMW - Replacing lower timing chain guides: an epic adventure

1991 - 1999 (E36) - Bimmerforums - The Ultimate BMW Forum - forums.bimmerforums.com
I was experiencing a rattle between 1200-1400 rpm. Pulled valve cover and diagnosed broken lower timing chain guide on the non-tensioner side. Bummer, but whatever. Order some parts, start the tear-down. All goes smooth until I get the timing cover off and see that the holes in the block that the mounting bolts thread into are stripped.

So I arm myself with some tools. 90 degree drill chuck, since there's no room in there. Several sizes of drill bits (19/64, 5/16, 21/64). I wanted to do this gradually, as to not risk snapping a bit off in the block, or destroying the hole. Finally, a thread repair insert kit. Brand is "V-Coil", but they're similar to heli-coil, etc. V-Coil is made in Germany, so can't go wrong, right?

Used and old t-shirt and some magnets to catch shavings. I then drilled out the holes, working my way from smallest to largest drill bit. I had to ghetto rig my tap handle to work around the crankshaft and head. Using the tap provided with the v-coil kit, I tapped the holes going slowly, using lots of lube, backing the tap out to clean it several times per hole.

Freshly tapped holes.

Threaded the v-coil inserts into newly tapped holes.

Dry fit the mouting bolts and chain guide. Plan on using red loctite on these bastards.

Here are the old guides. I broke the tensioner guide removing it. It was quite brittle, and I ended up gashing my knuckle on it (note blood in first picture). One of the mounting bolts is still in the oil pan. I'll try to fish it out with a magnet. If not, it will stay there until I get around to doing my oil pan gasket.
Date: Dec 22, 2012    Labels: BMW



Last videos:

Rev hiccup/Mis-Fire?
Rev hiccup/Mis-Fire?
Rev hiccup/Mis-Fire?
Rev hiccup/Mis-Fire?
Who are the exhaust experts?
Who are the exhaust experts?
Bruce Willis - 67 Vette
Bruce Willis - 67 Vette
2008 Chevrolet Impala...strange noise
2008 Chevrolet Impala...strange noise
1985 C4 Corvette Won't Start, HELP!
1985 C4 Corvette Won't Start, HELP!
Just sharing my 2011 Mercedes Benz C300 Cold Start. Doesn't it sound really good?
Just sharing my 2011 Mercedes Benz C300 Cold Start. Doesn't it sound really good?
///M Performance Drive Analyser
///M Performance Drive Analyser

Tags

Cars ·
Travel ·
Pets ·
production-frontend