bansman76 Posted January 26, 2014 Report Share Posted January 26, 2014 hey guys.. ive noticed on my new motor that when I start it and let it run for a few, it smokes more out of the right side and has a bit of fluid coming out of exhaust (im thinking its coolant ) .. so I took carbs,pipes off and preformed a leakdown test.. it held 6 psi til I loosened up the radiator cap, then started bubbling in radiator and loosing pressure. my question is would this mean a pinched or bad or ring in the noss head ?? Quote Link to comment Share on other sites More sharing options...
sleeper06 Posted January 27, 2014 Report Share Posted January 27, 2014 Yes Quote Link to comment Share on other sites More sharing options...
bansman76 Posted January 28, 2014 Author Report Share Posted January 28, 2014 well I tore it down and replaced all o rings n the head with a set I had on shelf. I didn't attach all hoses or fill radiator up , done the leakdown test and it leaked at the head again.. I torqued the head down in 4 stages . 1 at 10lbs 2 at 15lbs 3 at 20lbs 4 at 22lbs ... im in need of opinions or ideas ? please and ty Quote Link to comment Share on other sites More sharing options...
sheerider11 Posted January 28, 2014 Report Share Posted January 28, 2014 Run a straight edge across your cylinders. If they aren't flush, you'll never get a good seal. Quote Link to comment Share on other sites More sharing options...
bansman76 Posted January 28, 2014 Author Report Share Posted January 28, 2014 it sealed great on bench when I assembled motor but now it don't.. that's what I don't understand lol Quote Link to comment Share on other sites More sharing options...
sleeper06 Posted January 28, 2014 Report Share Posted January 28, 2014 Sometimes the area where the o ring seals is grooved from the oem head gasket floating a lil , might need to be decked a lil Quote Link to comment Share on other sites More sharing options...
bansman76 Posted January 28, 2014 Author Report Share Posted January 28, 2014 I'm gonna check it with a straight edge this afternoon Quote Link to comment Share on other sites More sharing options...
bansman76 Posted January 28, 2014 Author Report Share Posted January 28, 2014 checked with a straight edge and looked good to me. anyone have any other ideas ? I ordered a new set of orings Quote Link to comment Share on other sites More sharing options...
sleeper06 Posted January 29, 2014 Report Share Posted January 29, 2014 Porting went through water jacket if ported not sure I know I have personally had to deck cylinders on more then one occasion what kind of straight edge are you using a machinist rule or like just a price of metal Quote Link to comment Share on other sites More sharing options...
bansman76 Posted January 29, 2014 Author Report Share Posted January 29, 2014 cylinders are mx hardcore ported by hjr. my neighbor had a straight edge, so he brought it over and looked too. he said it looks good too. Quote Link to comment Share on other sites More sharing options...
sleeper06 Posted January 29, 2014 Report Share Posted January 29, 2014 Take the cylinders off fill the water jackets see if they leak into transf hjr goes a lil to nuts in those tranf tunnels Quote Link to comment Share on other sites More sharing options...
sleeper06 Posted January 29, 2014 Report Share Posted January 29, 2014 Do you have a granite top in your house? I have a big granite top in my shop that I do all my checking and sanding on, also what about the head is it new or used? Quote Link to comment Share on other sites More sharing options...
bansman76 Posted January 29, 2014 Author Report Share Posted January 29, 2014 I do have granite counter top. Actually have a extra piece in attic that I will be gettin down. Head is new. Entire motor only has maybe 2 hours of run time on it since assembled. Quote Link to comment Share on other sites More sharing options...
bansman76 Posted January 29, 2014 Author Report Share Posted January 29, 2014 New seals should be in tomorrow. Should I try them one more time ? I know that the first time I pulled the head off I looked at spark plugs and the right plug has some white spots. The left side was completely chocolate colored no white at all. I wish I hadve sent the whole motor out to be built instead of me assembling it. Quote Link to comment Share on other sites More sharing options...
Starwriter Posted January 29, 2014 Report Share Posted January 29, 2014 Sand your cylinders and head on the granite slab. Assemble with new O rings. You put the small O rings on top of the domes, right? Just snug the cylinder base nuts. Torque the head nuts. Then tighten the base nuts. Then leakdown test it. There is also a slight possibility that it's the rubber plugs in the bottom of the cylinders. Just to cover that, you could coat the plugs with 1211, and reinstall them. Quote Link to comment Share on other sites More sharing options...
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