Honda GN-4 Oil, good enough to break in a rebuild?

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Mar 2, 2004 | 12:49 PM

HondaLuva

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Honda GN-4 Oil, good enough to break in a rebuild?

I am finishing up my 440, cam project and I was wondering if Honda GN-4 was good oil to break in the rebuilt top end? Just wanted to make sure the rings seat properly. Thanks in advance...

Mar 2, 2004 | 05:51 PM

reconranger

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Honda GN-4 Oil, good enough to break in a rebuild?

I run GN4 for the first 20 hours. (Change oil at ~2 hrs., then again at 10.) At 20 I switch to something slicker, like HP4.

Mar 2, 2004 | 08:27 PM

HondaLuva

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Honda GN-4 Oil, good enough to break in a rebuild?

I'll be breaking a cam in at the same time. Will that make any difference?

Mar 2, 2004 | 08:36 PM

Chilly

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Honda GN-4 Oil, good enough to break in a rebuild?

It's not a bad idea to put some good moly lube on the cam surfaces to ensure they don't scuff in the first minute or so. The last cam I put in a car engine came with assembly paste for just that purpose. I use the GN4 all the time, no problems yet.