Thanks for the advice. I'll keep a lookout for genuine Honda pistons;
.5 or more over.

Beth

Quoting Michael Bateman <michael.bateman@...>:

> Those are hap jones pistons. They don't work well for the 175, the
> compression ratio is lower than stock. They sort of work for the 160, if
> you reshape the top of the piston for reduced compression (they make too
> much in a 160) - but note that the domes do fit up in a 160 combustion
> chamber.
>
> However, even if you do go to the trouble of making them work in your 160
> you'll have lots of problems with the cast iron skulls leaking between the
> skull and the cylinder head (combustion leaks - comes out as a little bit of
> a spooge around the spark plug hole). Even if you oring the cylinders.
>
> Michael
>
>>
>> These are on Ebay right now:
>>
>> http://cgi.ebay.com/ebaymotors/ws/eBayISAPI.dll?
>> ViewItem&item=330273997323&ssPageName=ADME:B:WNA:MOTORS:1123#ht_500wt_0
>>
>> My CB175 has low compression; worse on one side. That side had kind of a
>> fouled plug. Got
>> to tear into it so might be time for a bore job and new pistons. Should I
>> stay away from
>> these and just get some a bit oversized?
>>
>> Thanks; Beth
>
>
>