TT_Vert

iTrader: (12)

what size/pitch is the oem valve cover bolt? Im going to try to make something so i can mount my dial indicator on the center valve cover boss to measure lifter preload

Thanks
Dave

HavATampa

iTrader: (49)

Heh...you sound like me this weekend trying to figure out how to mount my dial indicator. I have this info at home and will post it this evening if no one else helps you out. I bought a Prothane fixture to use because I got tired of dealing with a magnetic base on an aluminum engine only to find out the fixture didn't come with metric adapters.

CAT3

iTrader: (9)

I believe they are 8mmx1.5px55mm. If not then its 1.25. Sorry, had to replace a lot of bolts, but that should be one of those.

ROCNDAV

iTrader: (100)

I believe it is a 6mmx1mm threaded hole. I will have to verify when I get home. As for mounting the indicators, I found a piece of steel plate. I then put the valley cover over the plate and marked the holes. I then removed the plate and drilled the holes.

Now when I want to check something, I place the place where the valley cover goes and use teh valley cover bolts to hold it down.

D

TT_Vert

iTrader: (12)

thanks guys. i just made a mount for the dial out of steel and bolted it to that using a rocker stud.

Dave

HavATampa

iTrader: (49)

Just for clarification. The rocker bolts are 8mmx1.25. Other bolt holes of interest for mounting dial indicators are the valve cover bolts 6mmx1.00 and head bolts 12mmx1.75. I used them all trying to mount my DI this weekend. Ended up using a piece of angle iron bolted to the head. Damned foreigners and their ****-eyed measuring system.

ROCNDAV

iTrader: (100)

The head bolts are M11x2. I was looking for a tap that size to clean out the holes before I found out a stock bolt could be modified.

D

HavATampa

iTrader: (49)

You're right, my bad. I should have known better. I spent the past weekend installing new heads and using my $50 APR thread chaser. I thought it was going to come gold plated, but it wasn't.

ROCNDAV

iTrader: (100)

Yeah, the suggested Kent-Moore tool is around $85-$125 depending on where you get it. It was much cheaper to grind a long used head bolt (like a tap) and use it as a chaser.