versuspop wrote:So it looks like I am in the sh$$. I need my cylinders bored out and new pistons. I need to move up to .25 over. Tim McDowell sells a kit for $300. Is there a cheaper option? It seems like Ohio cycle sells pistons (266-020) for around 40 a piece though. It looks like I could save bout 100 if I piece a kit together. Is this a bad idea? Also, do I need to do anything to the head (valve area) if I get this job done?
Lastly, though i am sure I have seen info before, I can not find it now- what is the difference between ca and cb pistons?
ca77 maintneance specs.
I didn't know Tim sold DREAM piston kits. .........lm
Looks like Tim does a kit. http://www.classichondarestoration.com/ ... d_222.html $389 though - sounds quite a lot. G '60 C77 '60 C72 '62 C72 Dream '63 CL72
'61 CB72 '64 CB77 '65 CB160 '66 Matchless 350 '67 CL77 '67 S90 '77 CB400F
Those are CB/CL77 pistons and will lower the compression. ..........lm
That kit includes new liners. It's cheaper to find a pair of Pistons rings and clips and get the liners bored and honed.
Any good automotive machine shop can bore them for 60 - 80 per hole. Try Bill Bune in MN if you don't have a good engine shop close by. I have not looked at Tim's kit, but liners are usually made slightly small and have to be finish bored and honed to match the pistons. Tim's pistons are forged I think and Bore tech are probably cast. If you can find a pair on ebay that's probably the way to go, or use a bore-tech set if you can't. But before you do any of that, what is the piston to bore clearance now? There has to be a way to get you out of the excrement of those incriminating increments. Ok. Now I am massively confused. I thought I should be looking for cb pistons instead of ca. I don't want to end up with less compression.
Also, I don't understand difference between forged and cast pistons. The issue is that my cylinders are tapered and show signs of trying to seize. How would you proceed? I am all ears. What should I buy to do this job, given that I definitely need to have cylinders bored? 65 CA77
66 CB77 71 CB450 73 CB350F Here's a link that explains the forge vs cast piston;
http://www.motorcycleproject.com/motorc ... stons.html I had my cylinder bored and got the pistons, rings and pin clips from Ohio Cycle;http://www.ohiocycle.com/ He has pistons in both NOS and aftermarket. I believe he has the pins as well, if you need them. 63 CA78
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