ozzy
Automatica
Posts: 4
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Post by ozzy on Apr 19, 2008 5:55:06 GMT
I was in my shed yesterday finally finding time to put things together for my pkM1L motor, i was getting all unnesercarily anal about things and decided to give my cylinder head and piston crown a quick polish, then i thought i give the main exhaust port some shine... i've never had a nicasil cylinder before... i used a very fine stone and went easy around the port, but it flaked!!  i shat my pants.. i really didn't expect it to be that fragile.. its only maybe 1.5 x 1mm on the bottom corner of the exhaust port, i used some wet and dry to blend it , then cleaned it and tried the piston with ring, you could just feel the ring catching ever so slightly, so blended some more until it felt smooth with the ring....... what a fucking dullard  have i completely fucked this lining or what? i don't deserve to live  pass me the pills and vodka |
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Post by pj on Apr 19, 2008 8:21:39 GMT
I was in my shed yesterday finally finding time to put things together for my pkM1L motor, i was getting all unnesercarily anal about things and decided to give my cylinder head and piston crown a quick polish, then i thought i give the main exhaust port some shine... i've never had a nicasil cylinder before... i used a very fine stone and went easy around the port, but it flaked!! i shat my pants.. i really didn't expect it to be that fragile.. its only maybe 1.5 x 1mm on the bottom corner of the exhaust port, i used some wet and dry to blend it , then cleaned it and tried the piston with ring, you could just feel the ring catching ever so slightly, so blended some more until it felt smooth with the ring....... what a fucking dullard have i completely fucked this lining or what? i don't deserve to live pass me the pills and vodka my fabrizi threw a ring out of the exhaust port the other day, and it took a chunk out from under the exhaust port. conceder your self lucky that you didn't take the nikasil off above the port, as there isn't any compression below the port- i really don't think it will do any difference. i put a really good chamfer onto the chip in my barrel and raced it, and its working fine. heres a pic or two before i cleaned it up- www.pauljonesimages.com/variouspics/fuckingfabrizi/it looks bad, but the port chip cleaned up well and i threw a piston in it, its running really well. Paul |
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Post by adspeed on Apr 19, 2008 11:09:13 GMT
Sounds like it will be fine. I take it it is well above the ring @ BDC
Any photos?
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ozzy
Automatica
Posts: 4
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Post by ozzy on Apr 19, 2008 11:34:03 GMT
cheers for the moral support  after i got off the computer i gave at bit more of a rubbing and bunged it all together and it started second kick, sounds like a monster! |
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Post by tony on Apr 19, 2008 12:27:00 GMT
grrrrrrrrrr! was that what it sounded like.. when i start mine it goes... gr gr grr meow! ;D
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Post by monza on Apr 19, 2008 14:28:11 GMT
I would say the blending should suffice. Like PJ said, good thing it was at the bottom of the port  |
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ozzy
Automatica
Posts: 4
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Post by ozzy on Apr 19, 2008 19:33:05 GMT
it goes brrrrrrrr bring bring da ding ding.. ding ding... ding... ding... kind of like a scary chainsaw ......... sorry i'm abit pickled..... beer festival this weekend.....  |
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i shat my pants.. i really didn't expect it to be that fragile.. its only maybe 1.5 x 1mm on the bottom corner of the exhaust port, i used some wet and dry to blend it , then cleaned it and tried the piston with ring, you could just feel the ring catching ever so slightly, so blended some more until it felt smooth with the ring....... what a fucking dullard 
have i completely fucked this lining or what? i don't deserve to live 
pass me the pills and vodka 
after i got off the computer i gave at bit more of a rubbing and bunged it all together and it started second kick, sounds like a monster!
