Clueless87JFrame Posted April 16, 2017 Author Report Share Posted April 16, 2017 Which Keihin carbs are the shit ? I'm still gonna order some just don't know what jets/size would be optimal for a ported 66.5 engine Sent from my iPhone using Tapatalk Quote Link to comment Share on other sites More sharing options...
LukeSandiefer Posted April 18, 2017 Report Share Posted April 18, 2017 Which Keihin carbs are the shit ? I'm still gonna order some just don't know what jets/size would be optimal for a ported 66.5 engine Sent from my iPhone using Tapatalk If you plan on getting more done to the engine in the future, go 33mm PWK or bigger. If not, 28mm PWK's. Quote Link to comment Share on other sites More sharing options...
Clueless87JFrame Posted April 18, 2017 Author Report Share Posted April 18, 2017 If you plan on getting more done to the engine in the future, go 33mm PWK or bigger. If not, 28mm PWK's. It's got 34mm right now - you recommend going down to stock size carbs for a ported motor ? Sent from my iPhone using Tapatalk Quote Link to comment Share on other sites More sharing options...
guns4children Posted April 18, 2017 Report Share Posted April 18, 2017 Lolz Sent from Planned Parenthood 2 Quote Link to comment Share on other sites More sharing options...
Clueless87JFrame Posted April 18, 2017 Author Report Share Posted April 18, 2017 Kinda what I thought ^^ lol Sent from my iPhone using Tapatalk Quote Link to comment Share on other sites More sharing options...
LukeSandiefer Posted April 18, 2017 Report Share Posted April 18, 2017 No, 26mm is stock. Even stock carbs can be effective up to 70-80 hp. I said 28mm. I thought you had stock, and was looking to upgrade. 2 Quote Link to comment Share on other sites More sharing options...
Clueless87JFrame Posted April 19, 2017 Author Report Share Posted April 19, 2017 No, 26mm is stock. Even stock carbs can be effective up to 70-80 hp. I said 28mm. I thought you had stock, and was looking to upgrade. Naw I've got some Mikuni VM34 carbs right now. Not the best but it ran damn good until it popped that oring and smoked that piston. I've got some muriatic acid in going to clean that cylinder with this wkd - try and get the studs out of both jugs to lap them before I attempt to throw it back together - and will do a leak down this go round for sure ! Sent from my iPhone using Tapatalk 1 Quote Link to comment Share on other sites More sharing options...
Clueless87JFrame Posted April 28, 2017 Author Report Share Posted April 28, 2017 Well back to roll out Take 2 hopefully this one fares better than the last ! Sent from my iPhone using Tapatalk Quote Link to comment Share on other sites More sharing options...
LukeSandiefer Posted April 28, 2017 Report Share Posted April 28, 2017 Good luck man! My first start will be tomorrow. Quote Link to comment Share on other sites More sharing options...
Clueless87JFrame Posted May 1, 2017 Author Report Share Posted May 1, 2017 Well the great news is she's still running ! The other news (not bad) is I've got some jetting to switch up. Got a nice set of 33mm PWK's from a member - but with my cylinder/porting/setup it's getting a little too much fuel, which is what I wanted it to do for break in but now I'm wanting the speed back I had on the first set of pistons haha Sent from my iPhone using Tapatalk Quote Link to comment Share on other sites More sharing options...
Clueless87JFrame Posted May 1, 2017 Author Report Share Posted May 1, 2017 This go round - I lapped both jugs, and lapped the intake surface to a nice surface and mounted everything up w gaskets and a very thin layer of yamabond. Zero leak down. So it was either the intake gaskets leaking on round one - or the head, or both. I will try to post a video of the piston. I've personally never seen a piston look like this one did - and I've seen a lot of messed up 2 and 4 stroke pistons haha Sent from my iPhone using Tapatalk Quote Link to comment Share on other sites More sharing options...
Clueless87JFrame Posted May 1, 2017 Author Report Share Posted May 1, 2017 https://uploads.tapatalk-cdn.com/20170501/f4e93b1453047d8641e81fc2ae575a3c.jpg[/img Sent from my iPhone using Tapatalk Quote Link to comment Share on other sites More sharing options...
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