Rebuilt crank shaft bearing noise

[mikidymac]

From all of the Wiseco's I have seen their setup clearances are not the same as OEM because they expand at a different rate that the OEM cast pistons. If you do not have enough wall clearance you will stick a Wiseco. This is why they got a bad reputation in the watercraft market because guys would start the engine cold and ride hard like stock pistons but the wiseco's would expand faster and seize. I stay away from them for this reason.
They are a good piston but you have to make sure you have the proper clearance and warm them up slowly.

 

[AdamXP800]

I have heard them called seizco pistons for this very reason



96 XP800!
Keep the 2 strokes alive!

 

[Toolanddiemaker]

Are they new? If so wiesco used to run a different piston to wall clearance than OEM. Not sure if that is the case still. Not trying to double guess your work, just don't want to see a problem.

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No there older, and I don't don't see it as double guessing I take in all advise and help I can get! If it weren't for you guys and all your wealth of info I probably wouldn't even have this hobby!
Anyway back to the drawing board, I'm going to sh@tcan the weisco's and look for a new set its a good decision because I shouldn't be using old Pistons on a fresh rebuild anyway.


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[mikidymac]

Take a look at the WSM pistons. I have had good luck with them in stock rebuilds and they are priced good. One of the site sponsors sells them now at great prices. (hfgreg)

 

[Toolanddiemaker]

Take a look at the WSM pistons. I have had good luck with them in stock rebuilds and they are priced good. One of the site sponsors sells them now at great prices. (hfgreg)

Cool thanks! I actually have some brand new wsm wrist pins so that sounds good hopefully I can keep it around $200.00 or less.


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[Toolanddiemaker]

I have heard them called seizco pistons for this very reason



96 XP800!
Keep the 2 strokes alive!

Lol! Learn something new everyday!


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[Toolanddiemaker]

Well I was refunded today so no more worries on that also to put a close to things I decided to send my 657 jugs off to full boar and use the mint 657x jugs on a backup motor for my speedster so thanks to all that helped!!!!


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[racerxxx]

If your swapping pistons I'd hop on those OEM oversize, nip it in the bud and have an all fresh OEM engine. I can get cylinders bored for like 130, and if you scored those pistons you'd be right around 200. Just saying.....

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[Toolanddiemaker]

If your swapping pistons I'd hop on those OEM oversize, nip it in the bud and have an all fresh OEM engine. I can get cylinders bored for like 130, and if you scored those pistons you'd be right around 200. Just saying.....

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1 hour to late, man I wish I would have waited I just paid and shipped them out! Could have saved $120.00 oh well thanks anyway!


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[racerxxx]

That's why I posted those pistons. You'll never get aftermarket pistons cheaper than the ones I posted. Aftermarket pistons are close to $85 to $100 a pop. Those were BOGO if you hit the buy it now. You could have asked them to just bore your cylinders to those pistons. I was trying to save you money. If you look at any of my threads you should know I want to have all OEM for the same as aftermarket or less. Typically less. As long as you get it running at the end that's all that matters. Dang, I have a 94 XP sitting...........

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[Toolanddiemaker]

1 hour to late, man I wish I would have waited I just paid and shipped them out! Could have saved $120.00 oh well thanks anyway!


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Sorry racer I feel bad now I know you were just trying to help me out and I greatly appreciate it I guess I didn't realize I had those options and made a quick decision to go with full bore.


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[racerxxx]

Hey no worries. Remember, it's winter time, no need to rush. I spend days/weeks searching for the best deal. Every $1 I keep in my pocket is more I get to spend on another part of the project. It's all good. I was just going to start looking for a smokin' deal on on an OEM gasket set tonight. These are the kind of things I love to search for. That extra $120 was a custom seat cover, LOL.

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[AdamXP800]

I'm thinking about picking up an Hx that is clean but needs a rebuild. If you run across any of those oem parts racer let me know



96 XP800!
Keep the 2 strokes alive!

 

[AdamXP800]

96 XP800!
Keep the 2 strokes alive!

 

[racerxxx]

Tell me when to start looking.

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[Toolanddiemaker]

Hey no worries. Remember, it's winter time, no need to rush. I spend days/weeks searching for the best deal. Every $1 I keep in my pocket is more I get to spend on another part of the project. It's all good. I was just going to start looking for a smokin' deal on on an OEM gasket set tonight. These are the kind of things I love to search for. That extra $120 was a custom seat cover, LOL.

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Got a present at the doorstep today!
Now this is what a crank should look like!

Man this crank is perfect know I now why you search for nos oem parts! I'm learning slowly but surly! Thanks for showing me the way. I don't even have to worry about a core charge either can't wait to get this build rolling!


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[AdamXP800]

Sexyyyy haha



96 XP800!
Keep the 2 strokes alive!

 

[Toolanddiemaker]

Sexyyyy haha



96 XP800!
Keep the 2 strokes alive!

Lol!! Yes she is sexy!!


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[racerxxx]

That's what I'm talking bout'! It pays to take your time and not be in a hurry. Now, not figuring what you lost on your other crank, wasn't this with the extra coin?

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[Toolanddiemaker]

That's what I'm talking bout'! It pays to take your time and not be in a hurry. Now, not figuring what you lost on your other crank, wasn't this with the extra coin?

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Definitely! Just having the confidence of building with that perfect crank is worth it's weight. In retrospect I only lost $20.00 to ship the crapy one back so really buying that nice oem one only cost $100.00 more than aftermarket. It does have pinned bearings but that should not be an issue I will pull them. One difference I did notice is that the smaller bearings on the 93 crank mag/flywheel side had o rings in them and this one doesn't have them it uses the pins for anti rotation but I did talk to a guy today that said I could just use red locktite or 606 on the outside of the bearings before I install on the case to keep them from spinning. One more option I have is to machine small slots for the pins in the case when we have a machine open at work but I would rather go with the locktite any thoughts?


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[racerxxx]

I noticed that which is weird. Um....your username is the route I'd take. Use your skills, don't take the easy way out. You literally could do it with a dremel if you wanted to do it quickly(not suggesting that). I have access to a full machine shop and I use it as much as I can.

 

[Toolanddiemaker]

I noticed that which is weird. Um....your username is the route I'd take. Use your skills, don't take the easy way out. You literally could do it with a dremel if you wanted to do it quickly(not suggesting that). I have access to a full machine shop and I use it as much as I can.

Yep I agree ill throw it on the hass one zip with an 1/8 carbide will probably do the trick I have a 657x case with slots to reference dimensions so should be super easy. If I could only find the courage to boar cylinders I could save some serious cash hell I was boring out some aliminum today!

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[mikidymac]

As far as boring the cylinders I have access to an old boring bar but for the price I find it much easier to send them out to Group K for a perfect fit and finish and for the price they charge it would take me more time than it is worth.

 

[Toolanddiemaker]

As far as boring the cylinders I have access to an old boring bar but for the price I find it much easier to send them out to Group K for a perfect fit and finish and for the price they charge it would take me more time than it is worth.

Yea I have yet to attempt it even though I have all they equipment available I don't have a whole lot of experience with boring steel mostly aluminum i think chatter would be an issue and it would suck to scrap out a cylinder experimenting. Never heard of group k I'll have to check them out.


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[Toolanddiemaker]

I noticed that which is weird. Um....your username is the route I'd take. Use your skills, don't take the easy way out. You literally could do it with a dremel if you wanted to do it quickly(not suggesting that). I have access to a full machine shop and I use it as much as I can.

Ok racer did it right and got it done!

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