Hi, Iam trying to get my 27 coupe going. It has set for over 35 years. The pistons were stuck in the bores. I got them out and have passed a hone thru the bores to clean them up. So what clearance should I be looking for? I have played with modern pistons for years but know nothing about these old cast iron plugs. The pistons look good. I did a valve job, cleaned the pan and all the little things to make this ol girl happy. I want to keep all the original parts for a while. Thanks for any help you can give me, Scott
I like to give the .004" They will work fairly well up to about .007" in my experience.
The MTFCA books, including The Engine, are very helpful.
Scott -- Check the end gap of your rings. If it's excessive, you may want to get some oversize rings and file the ends to fit.
Thanks guys. Thats the info I was looking for. I have .006 clearance. I want to get her going so I can find any other problems like the rear axle, steering, and bands. I will overhaul in the future and make her like new, but for now just to get her going. thanks, Scott
Well rear axle thrust washers should be on the list before a first drive if it has sat that long.Would be bad to crash it on it's maiden voyage.