A question regarding pistons
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Tourer
Joined: May 2006
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From: French Settlement, Louisiana
A question regarding pistons
I'm doing research for my engine build this fall. I was looking at Wiseco piston and see that there are standard and oversized pistons. Can someone educate me as to why so many choices and the effect oversize has?
I'll probably just end up calling GMR to hook me up when I'm ready but I'd still like to know.
Thanks
I'll probably just end up calling GMR to hook me up when I'm ready but I'd still like to know.
Thanks
Road Warrior
Joined: Dec 2005
Posts: 1,950
Likes: 2
From: Colorado Springs, CO
RE: A question regarding pistons
Duting use, the cylinder bores wear, usually in an oval shape. To get them roound and smooth again, they are bored a little bit, .020", .030", etc. To match the bores, you need a piston that's the same oversize. It's also how you get a bigger engine. You create a 95" engine by boring the cylinders bigger and replacing the pistons.
You'll also see three differant types of pistons - cast, hypereutectic, and forged. Unless you're racing or using a power adder, stick with cast or hypereutectic. They are considerably cheaper, quieter, and will last forever.
You'll also see three differant types of pistons - cast, hypereutectic, and forged. Unless you're racing or using a power adder, stick with cast or hypereutectic. They are considerably cheaper, quieter, and will last forever.
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Tourer
Joined: May 2006
Posts: 415
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From: French Settlement, Louisiana
RE: A question regarding pistons
ORIGINAL: bobcowan
Duting use, the cylinder bores wear, usually in an oval shape. To get them roound and smooth again, they are bored a little bit, .020", .030", etc. To match the bores, you need a piston that's the same oversize. It's also how you get a bigger engine. You create a 95" engine by boring the cylinders bigger and replacing the pistons.
You'll also see three differant types of pistons - cast, hypereutectic, and forged. Unless you're racing or using a power adder, stick with cast or hypereutectic. They are considerably cheaper, quieter, and will last forever.
Duting use, the cylinder bores wear, usually in an oval shape. To get them roound and smooth again, they are bored a little bit, .020", .030", etc. To match the bores, you need a piston that's the same oversize. It's also how you get a bigger engine. You create a 95" engine by boring the cylinders bigger and replacing the pistons.
You'll also see three differant types of pistons - cast, hypereutectic, and forged. Unless you're racing or using a power adder, stick with cast or hypereutectic. They are considerably cheaper, quieter, and will last forever.
Road Master
Joined: May 2006
Posts: 764
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RE: A question regarding pistons
I believe if you send your jugs to Wiseco and buy their pistons the will bore and fit them for a little over $300.Call first, I'm pretty sure but I don't work there so I'm not 100%.
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Road Warrior
Joined: Dec 2005
Posts: 1,950
Likes: 2
From: Colorado Springs, CO
RE: A question regarding pistons
I've used Keith Black hypereutectic pistons in V8's. Run them hard in the 6,000 range without a problem. Good product, no complaints.
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RE: A question regarding pistons
IMO(note i'm a boosted drag race guy), and i've bought thousands of dollars worth of pistons in many makes(Ross is my fav but CP & Wiseco for bikes are excellent) and compositions..i like a good forged piston...it takes heat better, it is lighter(less reciprocating weight), & it takes more abuse....cast is stock, hyperutectics are somewhat better but just an imposter for the mighty FORGED piston
wuudbe...just call Steve
wuudbe...just call Steve
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