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GPZ11 Injection

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zed1015
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Re: GPZ11 Injection

#76 PostAuthor: zed1015 » Wed Sep 16, 2020 9:05 am

Ok. That's a different set up to the earlier motors.
The groove extends to the bottom of the block and leaves a gap so that the rings can be pushed in with the liner fitted.
As you say you will have to get the 2mm section ones and try again.

moizeau
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Re: GPZ11 Injection

#77 PostAuthor: moizeau » Wed Sep 16, 2020 5:56 pm

Cheers for the reply Rob, yep back out and start again.
At least I'm not going mad then, just can't explain it properly.
Pete

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Re: GPZ11 Injection

#78 PostAuthor: moizeau » Fri Sep 18, 2020 5:44 pm

Pulled the 'new' head apart this afternoon. Plastigauged the caps, all within standard limits apart from one which was just outside, but well within the service limit.
Cleaned the plastigauge off and bolted it back together to see how the cams feel.
The exhaust cam has resistance when turning it using my hand on the cam chain sprocket and there is a little axial play but not easy. The inlet cam spins freely and will slop from side to side it you tilt the head.
So there is a difference. Should I be concerned? I have no idea having no experience with the internals of this engine before so nothing previous to gauge it by.
The cams were put in dry.
I'd expect the inlet slop to be taken up by it's 'oil bearing', and the exhaust may 'bed in'. The cams haven't been checked with a DTI for run out.
Any advice gratefully received.
Pete

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Re: GPZ11 Injection

#79 PostAuthor: moizeau » Tue Sep 22, 2020 5:03 pm

Sorted, many thanks Rob.
Started stripping the old base gasket off with a stanley blade. All done now, must have averaged 1mm2 / minute. Anyone know any tricks to make this easier? I read wd40 softens it...but didn't have any.

One more quickie, the bottom halves look like they should clean up very well without needing a re-paint so it's just the barrels, head and cam cover. Is the Simoniz Tough Black Satin a good match from my GPz1100 A1? Didn't have chance to pick any up when I was in the UK a few months ago and they don't sell it or ship over here.
Found this at a good price.
https://www.ebay.co.uk/itm/6-x-Simoniz- ... f#shpCntId
A mate can bring it over. How far does a can go?

Cheers
Pete

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zed1015
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Re: GPZ11 Injection

#80 PostAuthor: zed1015 » Tue Sep 22, 2020 8:20 pm

That's the stuff i use on all my engines.
A very good match to original and can be polished to a more glossy finish for outer covers.
One can goes a long way.
You may have 4 or 5 cans left once you are done.

moizeau
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Re: GPZ11 Injection

#81 PostAuthor: moizeau » Tue Sep 22, 2020 8:56 pm

Cheers, ordered.
Pete


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