1.5 mm ring 2.5 pistons

Dukedog

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Oct 6, 2009
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Looking for 15 over OEM, 2.5, 1.5mm ring pistons. Do any of you guys know where or who sells them, if anyone?...................
 

Faztbullet

Supreme Mariner
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Mar 2, 2008
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15,589
Re: 1.5 mm ring 2.5 pistons

Yes... Promarine sells them, they fit the 150/175/200 & Xr6 engines with 1.5mm rings

Promarineusa.com

.015 Piston Ring
Part #481-15

Piston ring set for (1) .015 over sized piston. Fits 2.5L V6 engines with 3.515" bore size. Each set contains 2 chrome faced keystone rings with 1.5mm or .060" thickness.

Later models used thicker rings with 2mm or .080" thickness Part# 321-15. Make sure you have the correct ring thickness before ordering.
$25.70 each
 

Dukedog

Captain
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Re: 1.5 mm ring 2.5 pistons

Thought so to but after a little checkin' all their 15 over pistons take tha 2mm even though they sell tha 15 over 1.5mm rings. They were gonna check Vertex but i really want tha OEM stuff.........
 

Faztbullet

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15,589
Re: 1.5 mm ring 2.5 pistons

Boats.net has best price I found for your OEM piston (785-9738T10) for $117ea. I checked stock and system only shows (1) piston in stock in all of Merc's warehouse's(its @ white bear lake,mn) list is 144.92. I can get you a aftermarket thin ring piston(not a Wiseco) but not in a .015, can get it in .010,.020,.030.
 

Dukedog

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Oct 6, 2009
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3,235
Re: 1.5 mm ring 2.5 pistons

I can buy any and all pistons but no one has tha 15 over with 1.5 rings that I can find except maybe Wizards........
I think that ONE OEM piston you found is a left over from tha one year Merc made a 15 over for tha ProMax. Or maybe a Sport Jet. Thats tha ones I was tryin' ta run down.......
His motor is already 15 over from Ruck.......
Tryin' ta talk him into Vertex but he's hell bent on OEM stuff if I can find 'em.
 

Faztbullet

Supreme Mariner
Joined
Mar 2, 2008
Messages
15,589
Re: 1.5 mm ring 2.5 pistons

If he wants to "hotrod" his motor sell him a set of Mahle ceramic ring pistons or a set of Wizardsif stock sell em on the Vertex or Pro-V or Pro-HP. I have only sold 1 set of wizards this year tha fellow about crapped his pants when he got the price ($1750)but you have to pay to play!!
 

Dukedog

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Oct 6, 2009
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3,235
Re: 1.5 mm ring 2.5 pistons

Don't need ta hot rod this thing if we can get it back ta tha way it ran before gettin' kinda tired (wore smooth out) :eek: Its one of tha hardest hittin' PM's I've ever seen and hes been really hard on it since day one in 1994. If its runnin', you can bet he's got BOTH feet on tha floor. Thats why he wants tha OEM stuff................
 
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