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Rebuild Kit


 
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Anonymous
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PostPosted: Wed Jun 13, 2007 5:01 pm    Post subject: Rebuild Kit Reply to specific post Reply with quote

Going to rebuild the 2n engine this week, but I was wondering if there's a way to know which pistons I have (3 or 4 ring, I believe) without pulling them?
 
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Dunk
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Joined: 03 Nov 2006
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Location: GA

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PostPosted: Wed Jun 13, 2007 5:45 pm    Post subject: Re: Rebuild Kit Reply to specific post Reply with quote

It's up to you which you run, I am running 4 ring right now.

I'm not so sure that is the best plan though.

3 may be better.

There are pros, and cons, and opinions.

I don't have one, I just said, 'Ell, give me the 4 ringers.
 
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arthur ward
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PostPosted: Wed Jun 13, 2007 6:32 pm    Post subject: Re: Rebuild Kit Reply to specific post Reply with quote

4 ring are a no no, no no
no additional help from 4 rings but more drag
 
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Dunk
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PostPosted: Wed Jun 13, 2007 6:36 pm    Post subject: Re: Rebuild Kit Reply to specific post Reply with quote

That does seem to be the popular concensus.

Can you testify to that fact you are posting?

My bet is that is an OPINION.
 
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Dunk
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PostPosted: Wed Jun 13, 2007 6:41 pm    Post subject: Re: Rebuild Kit Reply to specific post Reply with quote

My 4 ring piston 49 8N *236763* runs hard, and strong, and true, with those 4 rangers.

Nearly never have to bump the choke for it to start.

Will it wear out fore a 3 ringer?

I have run both and I don't know.

Is there anyone that does, can you offer proof, or just an acquired opinion?
 
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jmixigo
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PostPosted: Wed Jun 13, 2007 7:14 pm    Post subject: Re: Rebuild Kit Reply to specific post Reply with quote

I agree with ya Dunk. If some is good then more is better so way too much orta be bout right. In a small bore, long stroke, low RPM, high torque tractor motor, ring drag ain't much of a consideration. Back in my drag racing days I learned that a 40% reduction in ring friction was good for about two per cent more horse power at 8,000 RPM on a 302 cid Chevy. At 6200 RPM the difference was too small to measure on our dynomometer.
 
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Anonymous
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PostPosted: Sun Jun 17, 2007 4:37 am    Post subject: Re: Rebuild Kit Reply to specific post Reply with quote

Thanks for the info. Anything special need to be done before driving them in? I read somewhere about using loctite - should they just go in dry?
 
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