Over sized pistons

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BigBill
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Over sized pistons

Postby BigBill » Tue Apr 20, 2021 6:48 pm

On my 154 c60 what’s the largest over sized pistons I can get before I need to sleeve. The PO had a rattle in the engine after he rebuilt the engine he found out it’s the twin belt pto shaft brg. He had the head off and it looks like he banged the cylinder wall with a chisel. Just one shot. Now I need to go over sized to save the block. I bought a extra c60 block from ralph a while back but I hate to use it if I can repair this one.
I'm technically misunderstood at times i guess its been this way my whole life so why should it change now.

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Re: Over sized pistons

Postby SamsFarm » Tue Apr 20, 2021 9:01 pm

Ouch!

You could use look in the parts book and see what oversize pistons that was available, that might give you a good idea!
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tst
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Re: Over sized pistons

Postby tst » Tue Apr 20, 2021 10:36 pm

.060 is available, there are places who will make bigger, few years back I had a customer who wanted more low end power with the biggest piston possible, was bored to 120 over and pistons were made in the Midwest, back then he paid like $800 for those custom pistons, cylinders were paper thin but he was happy

BigBill
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Re: Over sized pistons

Postby BigBill » Tue Apr 20, 2021 11:29 pm

I guess cheaper to sleeve it, for heat transfer castiron sleeves would be better.
I'm technically misunderstood at times i guess its been this way my whole life so why should it change now.

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Re: Over sized pistons

Postby cadencewildbeast » Wed Apr 21, 2021 12:01 am

I just bought some .030 overs for my rebuild. Found out the hard way tho that after .020 the cost ramps up a bunch. There were up to .060 where I got mine from.

BigBill
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Re: Over sized pistons

Postby BigBill » Tue Apr 27, 2021 5:57 pm

I might try welding the few nicks in the cylinder walls with castiron rod then bore the cylinder oversized.

I hate fixing mistakes other people do.
I'm technically misunderstood at times i guess its been this way my whole life so why should it change now.

tst
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Re: Over sized pistons

Postby tst » Tue Apr 27, 2021 7:56 pm

I use .040 a lot, keep them in stock as I do many engines

outdoors4evr
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Re: Over sized pistons

Postby outdoors4evr » Thu Apr 29, 2021 5:32 am

184 w/ Creeper & 3-Point
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Mike S
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Re: Over sized pistons

Postby Mike S » Fri Apr 30, 2021 12:59 am

Hello, I just joined this forum and hopefully will pick up answers to a few questions I have about my 154. In ref. to your question about boring your block, have you considered boring only the damaged cylinder then installing a sleeve that would bring it back to a standard size bore? This is assuming the rest of the cylinders are in good condition. Good luck.

Bbading1989
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Re: Over sized pistons

Postby Bbading1989 » Sun May 02, 2021 4:29 pm

Mike S wrote:Hello, I just joined this forum and hopefully will pick up answers to a few questions I have about my 154. In ref. to your question about boring your block, have you considered boring only the damaged cylinder then installing a sleeve that would bring it back to a standard size bore? This is assuming the rest of the cylinders are in good condition. Good luck.


Welcome Mike!

It all depends on the cost. The last time I bought a kit for one of these engines it ran me somewhere around $400. If boring all 4 is less than boring and sleeving just the one I would just bore all 4 out and grab an oversized rebuild kit. These engines run a looonnnnggg time so I would consider this a one time investment.

BigBill
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Re: Over sized pisto

Postby BigBill » Sun May 02, 2021 9:06 pm

I can bore.
I'm technically misunderstood at times i guess its been this way my whole life so why should it change now.


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