New topend run-in

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Re: New topend run-in

Postby joe » Mon Jul 30, 2012 6:35 am

Tuna Cowboy wrote:i hear gas-preserved housefly is a delicacy in some countries.


spicy :shock:
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Re: Need a base gasket for P200

Postby jeffreyned » Mon Jul 30, 2012 8:03 am

joe wrote:Anyone have a stock P200 head they want to sell?


I've got a P200 head. Hit me up if you need it.
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Re: Need a base gasket for P200

Postby joe » Mon Jul 30, 2012 11:42 am

jeffreyned wrote:
joe wrote:Anyone have a stock P200 head they want to sell?


I've got a P200 head. Hit me up if you need it.



I may. I'll see how thing progress
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Re: New topend run-in

Postby Gearless42 » Mon Jul 30, 2012 11:50 am

If you keep fiddling with it, it's going to fall off...
~Landon
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Re: New topend run-in

Postby joe » Mon Jul 30, 2012 8:01 pm

set back. seized on River Rd doing 40 in 4th. :(
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Re: New topend run-in

Postby joe » Mon Jul 30, 2012 8:59 pm

Anyone have a standard size set of rings for a P200?
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Re: New topend run-in

Postby spiderwebb » Mon Jul 30, 2012 11:08 pm

joe wrote:set back. seized on River Rd doing 40 in 4th. :(

what are the issues...??

did you replace the whole top end without checking that the piston clearances are correct = bore, rings and squish...??

or something else...??
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Re: New topend run-in

Postby joe » Tue Jul 31, 2012 4:41 pm

back to the ole top end. rings on thursday.

I think the tolerance of the bore is too tight on the piston. just speculation right now. which might explain the fuel starvation issue. there might be an issue with the head too.

Will, this is a new topend, 3rd over and was ready to go. there is scraping on several sides of the piston. rings were gapped correctly.
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Re: New topend run-in

Postby spiderwebb » Tue Jul 31, 2012 8:20 pm

joe wrote:Will, this is a new topend, 3rd over and was ready to go. there is scraping on several sides of the piston. rings were gapped correctly.

"ready to go" is relative

you should have checked that there was the right bore to piston clearance no matter what the shop / person said...

the machine shop on 99HW is super cool
he checked my DL and the GP barrel specs for free = took all of 30 secs

also since you starting over again
- have him get it to spec
- have him make sure the piston / bore is round as it should be
- then go over to Gearless:
1 - do the exhaust 68% mod = cooler running and better flow
2 - check port timings = raise the exhuast port a mm or two and increase the piston windows if needed

options are nice
-
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Re: New topend run-in

Postby joe » Tue Jul 31, 2012 9:08 pm

spiderwebb wrote:
joe wrote:Will, this is a new topend, 3rd over and was ready to go. there is scraping on several sides of the piston. rings were gapped correctly.

"ready to go" is relative


-


fresh bore came from JJ's cylinder machinist. I trust JJ.
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Re: New topend run-in

Postby jeffreyned » Tue Jul 31, 2012 9:13 pm

I happen to have a stock P200 piston (brand new in the box) available Joe, if you have a stock bore cylinder to use.
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Re: New topend run-in

Postby joe » Tue Jul 31, 2012 9:31 pm

jeffreyned wrote:I happen to have a stock P200 piston (brand new in the box) available Joe, if you have a stock bore cylinder to use.


i'll keep that in mind. for now, I am going to use my old piston and cylinder with fresh rings. thanks
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Re: New topend run-in

Postby joe » Sun Aug 05, 2012 5:05 pm

old top end, new rings gapped at .306mm, or there abouts. hope this works :)
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Re: New topend run-in

Postby joe » Sun Aug 05, 2012 8:10 pm

5 mile run, hit 3 rd and 4th a couple times. Not issues. Plug looks ok :)
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Re: New topend run-in

Postby jeffreyned » Sun Aug 05, 2012 10:33 pm

Good deal! Hope that continues! 8)
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