Wiseco Piston and Hybrid Ceramic Bearings from Dominant Saws for 372XP

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jmssaws

jmssaws

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I used to only build popup saws and have only cut the squish band for a couple years and on most saws i can't tell a difference but if your exhaust is 95 stock a popup ain't fixing that. In my motorcycle engine days we used wiesco and never had any problems.
 

Rev

They Is No Tomorrow!!!
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Holy good golly, I go out of my way to try and make pistons that look like that...wow..

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blsnelling
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I used to only build popup saws and have only cut the squish band for a couple years and on most saws i can't tell a difference but if your exhaust is 95 stock a popup ain't fixing that. In my motorcycle engine days we used wiesco and never had any problems.
I cut the squishband on 066/660s.
 
idiotwithasaw

idiotwithasaw

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I just thought that since this is essentially a racing piston if it was supposed to serve as a kind of wear gauge. When so much of the logo was gone to replace the piston. Or is it just to be pretty.
 
Grits & Gravy

Grits & Gravy

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I've ran 60+ mm wiseco's as tight as .0013" on the clearance in air cooled kart engines turning WAY past 15k... But you'd better be vigilant about warmup.
 
blsnelling
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After more than 5 months, I finally have a test bed for these bearings and Wiseco piston from Dominant Saws. This beautiful 2171 has some pretty cool internals.

This saw lived it's previous life as a rescue saw from Cutters Edge. Unbeknown to me, the PTO side crank seal had badly wallowed out the case, and the crank was damaged as well. I put it back together with a new OEM case and a good used OEM crank. Squish was .037" so the cylinder base was cut .017", netting a final squish of .020". The exhaust port was de-carboned and polished. Otherwise, this saw is 100% stock. Initial compression after the first heat cycle was 152 PSI. After a little run time, and as time permits, I'll be going back in to fully mod this saw. After the first couple heat cycles, the piston looks great, as seen below.

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Jon1212

Jon1212

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I appreciate that. If and when I do sell it, or won't be until after I'm done testing with it. That will include full mods.

Well heck. Brad we may disagree on some stuff, but I think we can agree on the fact that this saw is one of the best, and not just looking.
 
Big_Wood

Big_Wood

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really cool try out of the wiseco. i'm a little disappointed the base had to be turned though and then even after being turned you only got 152psi out of it. i see more then that on 98% of the 372's i delete the gasket on. will be interesting to see if it goes up some and how it runs. you gonna make a vid for us brad?
 
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