Picking up a 89 gs500 project tomorrow what to look for mechanically?

Started by jarrodblake, April 23, 2018, 06:39:46 PM

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jarrodblake

What do you mean by stuffed the shim size?

So my new feeler gauge came in it looks like a few people use this one on here.

IMAG1484 by jarrod vanwinkle, on Flickr

So I redid the test with the new gauge.

here are the new measurements

IMAG1442 by jarrod vanwinkle, on Flickr

My Valve shim tool also came in today.

IMAG1512 by jarrod vanwinkle, on Flickr

So my I removed the valve shims to see what size they are.

IMAG1517 by jarrod vanwinkle, on Flickr
IMAG1518 by jarrod vanwinkle, on Flickr


The specs for the valve and shims are.

A I did not check as it is at .10 of clearance

B .06 clearance with a 2.65 shim I want .10 of clearance to match the other valve

C .10 clearance with a 2.55 shim I want .06

D .03 clearance with a 2.65 shim I want .06

I don't understand how to use the valve shim chart I found a valve shim calculator but I not 100% on it. https://www.crfsonly.com/calculators/crf450-valve-shim-calc.php

So here is what I got using the calculator.

As for valve shims, as far as I can tell they only sell shims in .5 increments?

B .06 clearance with a 2.65 shim I want .10 of clearance to match the other valve calculator = 2.610 So I would assume I would need a 2.60 shim?

C .10 clearance with a 2.55 shim I want .06 calculator = 2.590 so 2.60 shim?

D .03 clearance with a 2.65 shim I want .06 calculator = 2.620 So 2.60 shim?

I also got it running for about a minute or so and redid the completion test and I now the left cylinder is at 120 psi and the right is still at 150. It looks like I may just wait to rebuild the top end until next winter.

IMAG1514 by jarrod vanwinkle, on Flickr













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