we got the original engine and transmission with the car the numbers all match.
The engine was removed and partly disassembled when we got the car.
A pic of the engine shortly after unloading.
I started with the head
I completely disassembled it and cleaned it so it could be checked for cracks.And any needed machine work done.
It took a lot of heat and penetrating oil to get that thermostat housing off, without breaking it or the studs.
The valve spring compressor almost did not go small enough.
But it worked.
It sat so long without the engine being turned some of the valve springs stayed partly compressed.
Got it cleaned up ready for the machine shop to check out.
Well after sending to the shop the head ended up having a few cracks in it they could have been repaired but the cost exceeded the value of the head.
Lucky for me a friend had a extra 850 head thanks again Dave. So I took it down just like the one above and sent it off to the machine shop.
It proved to be a good head so they did a valve grind and installed new springs.
These guys do nice work.
I put it back in its plastic bag and on the shelf of done parts awaiting reassembly, and moved on to finish disassembly of the block.
It had a piston taken out when I got it the previous owner had been checking it out some.
I removed the reaming parts
The rod and main bearings were completely wore out., The crank shaft might just need a polish, but I think it will have to be reground 10 under I'll let the machine shop make the call.
The cylinder bores are not too bad but they do have some wear about 0.002 at the top and 0.001 at the bottom so taper is not too bad.
I looked around some for oversize pistons for a 850 I did not have much luck. Before spending anymore time on piston searching, I sent the block in to be checked for cracks and make sure it was usable, I also sent the crankshaft in for checking.
At that time the shop recommend that honing the bore another 0.001 or so to clean and square it up, and knurling the pistons might be a good option for me.
I had thought knurling pistons was a cheap temporary fix but they said in my case it would be a good long term fix.
Due to the fact that the bores did not have much wear to begin with, and even after honing were still very close to spec.
Also the 850 piston has a long skirt that offers plenty of support along with knurling would hold up very well.
So the decision was made to go ahead with the recommendation.
The block was honed and pistons knurled.
The crankshaft was reground -.010 and undersized bearings were ordered.
The crankshaft came back looking very nice!
I always double check everything when assembling a engine, The journals all measured within 0.0002 of each other nice job.
A few more parts and we'll be able to put the engine together.
One needed item was a new camshaft the old one had some wear and a little rust.
After seeing the price I looked at getting the old one reground, the machine shop took it to delta cams for me. Nice people at delta they had a lot of options for regrind from mild to wild this is a stock restoration so I went with a very mild but not stock grind it was recommended by delta for my application might make it a little more responsive. I cant do much with the cam anyway without adding more cam bearings as the early 850 only had a front bearing the other two just run in the cast block it wont take the spring pressure needed for a aggressive cam its a easy mod to add the bearings, but again this is a stock restoration carburetor, exhaust, and cylinder head would all need modified to make use of a bigger cam so we'll keep it simple.
The cam returned looking great they were also able to resurface the lifters for me.
It saved a couple hundered dollars going with the regrind and it's cool anytime I can keep orignal parts with the car.
well thats all for now more to come.
