Sunday, March 01, 2009

Getting close…

Assembly is the best part of any car restoration / repair job, eh? We got a lot done yesterday on the motor and should have it running after the next trip up. We started the day with a good cleaning of the cylinder head, block head, bores, crank journals etc. Also used the opportunity to degrease the side of the engine and get some new paint on the head and valve covers.

From 1936 Pontiac Restoration

From 1936 Pontiac Restoration

Next came the pistons and rods. We put rubber hose over the cap bolts to prevent any scratching,used the ring compressor and dropped each assembly in the proper bore (bearing tabs on the rods to to the front of the engine), put on the caps (reversing the tab position), torqued the bolts to 50 lbs., and finished each cap off with a stainless cotter pin. Paul did find that the bearing on #4 appeared to be misfitted last time, which MAY be our noise. He cleaned up the tab and groove and now we'll hope it works properly. BTW, for future reference, the bore of this engine is .040" over, the rod bearings .010" under. The Hastings part # for a .040 compression ring is 29119.

From 1936 Pontiac Restoration

After our traditional lunch break in town…

From 1936 Pontiac Restoration

We got the valve train reinstalled. Having the right tools for this is a must. First a spring compressor to get them fitted back in position above the lifters so the valve stem can be dropped in, then the removal tool to lift them up so the keepers can be inserted (you can find these tools on eBay). I only got one in backwards. This was the first time I ever messed with valves on these cars and found it was pretty easy (with the right tools).

From 1936 Pontiac Restoration

Paul cleaned up the head bolts on a wire brush, finding several that looks problematic. I've got a lot more at home though, so no problem there. We got the head on and located properly. At the end of the day, here's how it looked.

From 1936 Pontiac Restoration

Next time we'll tighten down the head, mount the oil pan – I got some cork from Ken to make a gasket – put back the manifolds, hook up all the other stuff and get it running.

This is definitely an engine with some wear on it, that is plenty of clearance in key places, but there's no reason it shouldn't be very serviceable. It looks very good on the inside. If we still have that damn noise I'm going to be very disappointed. Stay tuned!


Anonymous Anonymous said...

Thanks for taking the time to illustrate your progress on this wonderful Pontiac. I was kind of wishing to see some of the fabulous grille that ends at the windshield, tailight, and indian cast in the motor block, but all I can say is thanks --well done!
Perry in Idaho

8:56 PM EDT  
Blogger Bob Shafto said...

Glad to send you those pics if you email me:

4:41 PM EDT  

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