edgehanger Posted May 22, 2016 Report Share Posted May 22, 2016 What are you basing the .052 of off? I'm not doubting you or anything i'm just curious. Is this for a certain setup, dome design or fuel type? Of course we have seen motors that absolutely rip with much tighter squish but i've never been able to play around with squish on a dyno or anything. fastest stock cylinder i seen ran .035 squish but it was a drag bike Sent from my GT-I9500 using Tapatalk Quote Link to comment Share on other sites More sharing options...
Strm Trpr Posted May 22, 2016 Author Report Share Posted May 22, 2016 and always always check your squish band clearance when running one of these heads. unless you did a deck height measurement and spec'd a squish height on each cylinder it might be to tight.. i know there will be some call outs on this spec but anything tighter than .052 and your loosing hp.. any band width more than 9.5mm and your hurting the motor.. just look at pics of the tops of domes and you will see the ring of heat that the wider band produces. the piston will tell you how wide the band needs to be.. i have had 4 motors come over from wichita that this was one of the many things wrong with them. im not going to say what shop built them but they have all been jacked up i do know it wasnt MULL. mull has some great products and great service.. running these specs witht he correct dome CC for the fuel and timing ou are going to run will result in a motor that lasts for as long as the other parts hold together. and will run great... of course this is all my opinion from building motors that last and last for over a decade now... If you read the thread, it's a stock motor, with a pump gas mull head.I bent up some solder like so, http://www.rb-designs.com/rb_designs_llc_017.htm Then I reused the old stock head gasket, torqued the head back on and turned the flywheel by hand to smash the solder. Removed the head and retrieved the solder. Measured the smashed solder with a set of calipers and measured .054". The pump gas mull head boosted my cold kicking compression from 120psi to 150psi. Quote Link to comment Share on other sites More sharing options...
edgehanger Posted May 22, 2016 Report Share Posted May 22, 2016 Why .052? How did you come up with that? Not doubting you, im just curious Sent from my GT-I9500 using Tapatalk Quote Link to comment Share on other sites More sharing options...
edgehanger Posted May 22, 2016 Report Share Posted May 22, 2016 I double posted by mistake Sent from my GT-I9500 using Tapatalk Quote Link to comment Share on other sites More sharing options...
Strm Trpr Posted May 23, 2016 Author Report Share Posted May 23, 2016 Why .052? How did you come up with that? Not doubting you, im just curious Sent from my GT-I9500 using Tapatalk camatv mentioned .052".I have no idea what the squish should be, not my forté. This motor is getting pulled after the 4th and getting the Redline MX Port Serval treatment. Head, stk crank and stk bore/port cyl will be for sale. Quote Link to comment Share on other sites More sharing options...
edgehanger Posted May 23, 2016 Report Share Posted May 23, 2016 camatv mentioned .052". I have no idea what the squish should be, not my forté. This motor is getting pulled after the 4th and getting the Redline MX Port Serval treatment. Head, stk crank and stk bore/port cyl will be for sale. What are you going to be asking for it and who did the porting? Sent from my GT-I9500 using Tapatalk Quote Link to comment Share on other sites More sharing options...
Strm Trpr Posted May 23, 2016 Author Report Share Posted May 23, 2016 On another note, the 33mm Keihin PWK's tuned in fabulously within about 15 mins. 48 pilots CEL needle middle groove 155 mains Airscrews at 1.5 turns out idle set to 1,500rpms w/eBay tach and carbs sync'd at idle with FAST sync tool. Cold kicking compression is 150psi. Plug chop tuning Wed after I get a new throttle cable. When plug chop looks good, I'm going to add 4* of timing and chop again. If that looks good I'm going to lean the needle 1 groove to see what happens. Quote Link to comment Share on other sites More sharing options...
Strm Trpr Posted May 23, 2016 Author Report Share Posted May 23, 2016 What are you going to be asking for it and who did the porting? Sent from my GT-I9500 using Tapatalk Dude, do you have a problem reading English?Mull pump gas head, stk crank, stk bore and stk port... Quote Link to comment Share on other sites More sharing options...
edgehanger Posted May 23, 2016 Report Share Posted May 23, 2016 Dude, do you have a problem reading English? Mull pump gas head, stk crank, stk bore and stk port... Easy there big fella. I misread it. Shit happens. So how much? Sent from my GT-I9500 using Tapatalk Quote Link to comment Share on other sites More sharing options...
Strm Trpr Posted May 23, 2016 Author Report Share Posted May 23, 2016 Lol, just poking your ribs brah!! What do you want out of those three? I'm going to have Cam inspect the crank and true/weld it before sale. Quote Link to comment Share on other sites More sharing options...
edgehanger Posted May 24, 2016 Report Share Posted May 24, 2016 Lol, just poking your ribs brah!! What do you want out of those three? I'm going to have Cam inspect the crank and true/weld it before sale. I might be interested in the head and cylinders Sent from my GT-I9500 using Tapatalk Quote Link to comment Share on other sites More sharing options...
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