Tech Forums > Project Shop
James' 77 550f.
paulages:
--- Quote from: luceja on June 02, 2010, 05:01:09 PM ---Does anyone have any input on this idea:
Scrap my corroded block, get a cylinder block in decent condition, normal bore, and use my pistons (assuming they are normal bore), or do I have to have the cylinders bored an go oversize no matter what?
Also, took a shot at polishing the cam lobes and I'm thinking I'm going to need a new cam :\
--- End quote ---
finding some cylinders or liners that are within specs is definitely possible. the problem is, it will be a crap shoot finding some that are usable unless you are able to measure before buying.
luceja:
I guess the question is how likely are things to be within spec?
Elkie has cylinders in good condition for a reasonable price that may be in spec, but aren't measured. I have pistons which also may be in spec and also aren't measured. Paul, do you have the ability to look at / measure the pistons to see if they are even worth considering, or is that something I should leave to Dan Halls?
Failing that, Soos does have some cut 750 pistons as you remembered. They would require a .330 cam and would def. require boring. (what is the stock 550 cam?) The interesting thing there is that I may need to replace my cam anyway because of corrosion on the lobes, so this may be a better route, though I have no idea what the complexities and costs are there.
Fun stuff, thanks all.
paulages:
--- Quote from: luceja on June 02, 2010, 06:29:46 PM ---I guess the question is how likely are things to be within spec?
Elkie has cylinders in good condition for a reasonable price that may be in spec, but aren't measured. I have pistons which also may be in spec and also aren't measured. Paul, do you have the ability to look at / measure the pistons to see if they are even worth considering, or is that something I should leave to Dan Halls?
Failing that, Soos does have some cut 750 pistons as you remembered. They would require a .330 cam and would def. require boring. (what is the stock 550 cam?) The interesting thing there is that I may need to replace my cam anyway because of corrosion on the lobes, so this may be a better route, though I have no idea what the complexities and costs are there.
Fun stuff, thanks all.
--- End quote ---
i can measure for you if you bring them by.
luceja:
--- Quote from: paulages on June 02, 2010, 10:46:08 PM ---i can measure for you if you bring them by.
--- End quote ---
Will do, thank you man.
luceja:
so the pistons I have are shot. two of the skirts have cracks, one looks like the piston was just dropped or hit, possibly by me. The likelyhood of piecing together stock cylinders and pistons and hoping they are in spec to avoid the cost of boring is getting pretty low.
1. I need new pistons, rings, etc. 2. I need cylinders bored for said pistons. 3. I may need a new cam depending on how the lobes clean up.
If it weren't for the fact that I just put money into the head, I'd be really tempted to chase down a 650 top end hybrid thing going.. doesn't seem like it's hard to find the parts on ebay, at a glance.
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