T-belt slipped on 1991 164L - Page 3

**gprocket** · #31 (**permalink**) 04-25-2008, 04:18 AM

Michael:

That makes sense that the head would need to get worked in a bit but I'm still wondering why the front head's reading dropped 40 PSI when nothing was done to it. The only other possibility I could see would be timing. But I would think you would need to be grossly off to have that happen and as far as I can see I am right on the marks...

MrT · #32 (**permalink**) 04-25-2008, 05:37 AM

The rings _could_ be drier than before. The valves _could_ have been kissed a bit. You're SURE your front head had the 3.0 gasket instead of the 2.5 gasket? or am I missing something else? Or running at lower revs could hold the pressure down if there are leaks.

Michael, as full of opinions as usual

**gprocket** · #33 (**permalink**) 04-25-2008, 12:00 PM

Got the car all together and she started right up, idled smooth and reved freely. The motor is quiet and confident (a bit of a personification but what the heck). On the road she's got great power and shows no bad behavior whatsoever. With one exception: The throttle stuck at WOT when it hung up on the plastic bellcrank cover. That was a bit exciting but fortunately it was in gear and I have good brakes!

As for the compression, after driving it around a bit I let it cool some and re-tested. All the way around I'm getting 150 PSI - 155 PSI at WOT. I really don't know what to make of it except that (1) I wasn't actually there when they were pulling 200 PSI, (2) it is very consistent between cylinders which is a good sign and (3) 150 PSI doesn't sound too bad anyway. I really don't think I lost 50 PSI, I think either there was a gauge error or a reading error...

Anyway I'm really happy with its performance and I really appreciate everyone's help in sorting this car out.

So all three 164's are up and running and driven daily. Sweet!