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Post by kevinm1980 on Jan 23, 2024 20:40:54 GMT -5
So I rebuilt this 701, pulled it apart today because I wanted to see how close these are to free porting..anyways the bottom of piston had groves from transfers, anyone know why?  |
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Post by edju1958 on Jan 23, 2024 22:25:58 GMT -5
Was it an oEM,or Chinese aftermarket?
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Post by xl130 on Jan 25, 2024 6:28:21 GMT -5
I’m no expert so I’m purely guessing, but my initial thoughts are that that piston got hot and expanded during break in. I had a piston do something similar to that one time. Is it also possible that there are sharp edges on the transfer ports or aluminum transfer built up on them??
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Post by kevinm1980 on Jan 25, 2024 12:22:01 GMT -5
I dug out the correct original piston and it had the marks too, just never noticed them due to all of the carbon scoring
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Post by blythkd on Jan 27, 2024 9:29:09 GMT -5
Wow, I've seen some worn pistons but I don't know that I've ever seen one with gouges dug that deep.
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Post by headbanger on Feb 15, 2024 10:03:14 GMT -5
So I rebuilt this 701, pulled it apart today because I wanted to see how close these are to free porting..anyways the bottom of piston had groves from transfers, anyone know why? i am pretty sure its a 701 i have and the piston right pooched as well but i can only find the 2 pictures i took through the exhaust flic.kr/p/2pymieH flic.kr/p/2pymirS |
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Post by xl130 on Feb 15, 2024 10:18:28 GMT -5
Oh yeah. She be cooked real good. Looks straight gassed.
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Post by onlyhomelites on Feb 17, 2024 9:57:25 GMT -5
Is chrome worn away on the lower part of the cylinder? I hate to say it, but based on the original pics, that cylinder liner is probably not in great shape. Was it originally seized or did it still turn over?
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