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Post by jessy03 on Jan 3, 2012 19:54:49 GMT 1
Hi, I need my ypvs head skimming/re-profiling and o rings fitting. Does anybody on here offer this service or know of anybody that does.
Many thanks jess
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Post by midlifecrisisrd on Jan 3, 2012 20:27:34 GMT 1
Glyn ( slinger ) did mine and I think he did nikfubar's as well but he is in Canada so a bit costly with post back and forth.
Check with Norbo, was getting some YPVS cool heads I think.
Steve
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Post by midlifecrisisrd on Jan 3, 2012 20:31:27 GMT 1
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Post by jessy03 on Jan 3, 2012 20:52:55 GMT 1
Thanks for the info guys, I bought a pro-design cool head a couple years back and never fitted it, perhaps I should just fit it. I bought it with 22cc domes, how do you get the correct squish, different size domes??? I do like Rogers billet head though and you can fit a thermostat. Thanks guys Jess  |
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Post by slinger on Jan 4, 2012 15:55:56 GMT 1
Slinger used to do it but he moved to Canada  Trouble with getting the standard head done is you are weakening an already warp prone piece of metal and if the engine let's go it may damage the modded head  Get a billet jobbie   |
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Post by slinger on Jan 4, 2012 15:58:46 GMT 1
Thanks for the info guys, I bought a pro-design cool head a couple years back and never fitted it, perhaps I should just fit it. I bought it with 22cc domes, how do you get the correct squish, different size domes??? I do like Rogers billet head though and you can fit a thermostat. Thanks guys Jess Cool heads are ok'ish, but you need a remote stat for the YPVS. 22cc dome is way to big, you want 20cc really. And to set the squish you can use different thickness base gaskets. Roger is way better IMO. Glyn |
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Post by jessy03 on Jan 4, 2012 20:58:02 GMT 1
Thanks for the info Slinger, looks like the cool head is off to fleabay then and then call to Roger @ wicked.
Thanks Jess
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Post by jessy03 on Jan 4, 2012 23:15:53 GMT 1
Thanks mr headcoats as well  Jess |
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Post by borismorris on Jan 5, 2012 14:30:37 GMT 1
i know my tuner strips the 3 layers of the head gasket and uses just one... then fits 2 base gaskets to raise the ports heights....
this is by far the cheapest most effective way tuning your powervalve.
this is a method has been used for years by one of the best ypvs tuners in the country. ..............obviously all his race bike have ports honed and polished for much more performance.
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Post by borismorris on Jan 5, 2012 16:17:59 GMT 1
further to the above...... trim the base gasket if any of it overlaps the inside of the jion..ie the flat bit where the base gasket fits.... you do not want to disturb any of the fuel flow up from the crankcase up through the transfer ports.
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Post by midlifecrisisrd on Jan 5, 2012 17:26:43 GMT 1
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Post by jessy03 on Jan 5, 2012 22:58:03 GMT 1
Thanks for the advice guys, much appreciated, don't know what to do now.
Jess
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Post by slinger on Jan 6, 2012 0:40:00 GMT 1
Think he might run into trouble doing that to the RD500 head. Glyn |
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Post by midlifecrisisrd on Jan 6, 2012 15:56:27 GMT 1
Thanks for the advice guys, much appreciated, don't know what to do now. Jess Just post it to glyn ;D Steve |
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higgsy
Thrash Merchant
Posts: 458
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Post by higgsy on Jan 14, 2012 21:09:28 GMT 1
Bob Farnham can do all types of machining, I believe he prefers to o-ring the barrels though, possibly because of the head strength?
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Post by Tone on Jan 15, 2012 15:09:07 GMT 1
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Post by jessy03 on Jan 15, 2012 21:44:37 GMT 1
thanks for the help lads, interesting stuff
Jess
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