Loc Posted June 17, 2009 Report Share Posted June 17, 2009 So my bike was running awsome with the stock head. I thought what the hell lets put on a new head. I put on a Trinity IV head with 19cc domes. Now for some weird reason I am loosing about 16oz of fluid for every 4 hours of riding, NOT GOOD. I noticed that when I am riding hard it will leak out of the overflow. I removed the bottle and it is coming from the overflow hose. Any ideas where to look. It does not leak anywhere externally, only out the hose. Any way to check and see if it is leaking into the cylinders without removing the head. Quote Link to comment Share on other sites More sharing options...
yamahaman244 Posted June 17, 2009 Report Share Posted June 17, 2009 So my bike was running awsome with the stock head. I thought what the hell lets put on a new head. I put on a Trinity IV head with 19cc domes. Now for some weird reason I am loosing about 16oz of fluid for every 4 hours of riding, NOT GOOD. I noticed that when I am riding hard it will leak out of the overflow. I removed the bottle and it is coming from the overflow hose. Any ideas where to look. It does not leak anywhere externally, only out the hose. Any way to check and see if it is leaking into the cylinders without removing the head. i had taht at first to and it was the head gasket but u said u have a performace head i just had the stock one Quote Link to comment Share on other sites More sharing options...
SandRageShee Posted June 17, 2009 Report Share Posted June 17, 2009 prolly running lean on your pilots or mains...clean and check both.maybe go up 1 size to be a little safe...lean is mean but fat is where its at Quote Link to comment Share on other sites More sharing options...
someone82 Posted June 17, 2009 Report Share Posted June 17, 2009 (edited) Your dome o-rings are probably not sealing; either one of them got pinched during install, the mating surfaces weren't clean, or you had an o-ring just fail on you. Either way it sounds like you have a compression leak, pop the head off and check out the o-rings. Get a new set and reinstall the head. Do not reuse the o-rings, better safe then sorry. Edited June 17, 2009 by someone82 Quote Link to comment Share on other sites More sharing options...
LiftdT4R Posted June 17, 2009 Report Share Posted June 17, 2009 How does the impeller look too? Is it the stock plastic one? Might be nothing left of it. But I'm willing to bet it's an issue with the head sealing since thats when it started. Make sure your radiator cap is on tight, and is good too. Quote Link to comment Share on other sites More sharing options...
Loc Posted June 17, 2009 Author Report Share Posted June 17, 2009 So what your thinking is that it is leaking into the cylinder. I might just mil the head and put it back on. I am sure the bike is running rich. Quote Link to comment Share on other sites More sharing options...
someone82 Posted June 17, 2009 Report Share Posted June 17, 2009 So what your thinking is that it is leaking into the cylinder. I might just mil the head and put it back on. I am sure the bike is running rich. That is exactly what i'm thinking and you don't want to run it like that for too long or it can do some damage to the piston. When you put the head on did you put it through a couple of heat cycles and re-torqued the head after it was fully cooled off? No need to put the stock head back on, just find out what is causing the problem and fix it. :thumbsup: If you were running it lean for that long you would of had a good case of detonation to go with the heat and your plugs would most likely be backing out. :ninja: Quote Link to comment Share on other sites More sharing options...
Loc Posted June 17, 2009 Author Report Share Posted June 17, 2009 I noticed that there is a little build up of dirt and oil around the spark plugs where they go into the head. Would that be consistant with it running lean? Quote Link to comment Share on other sites More sharing options...
BoostedRex Posted June 17, 2009 Report Share Posted June 17, 2009 I noticed that there is a little build up of dirt and oil around the spark plugs where they go into the head. Would that be consistant with it running lean? No that wouldn't. But you didn't reuse your stock headgasket did you? Only use the O-rings that come with the head. And I know on all the aftermarket heads I have used I have had to do 2-3 heat cycles to get the head to quit leaking. Quote Link to comment Share on other sites More sharing options...
dajogejr Posted June 17, 2009 Report Share Posted June 17, 2009 You went from a stock head to 19cc domes? Are you running higher octane gas? And I agree...you pinched an oring. If it's leaking in the combustion chamber, you're asking for a blown motor. If it's just leaking up a stud or through a water jacket...it needs to be replaced soon...or it'll overheat and break/warp parts. Quote Link to comment Share on other sites More sharing options...
Loc Posted June 18, 2009 Author Report Share Posted June 18, 2009 The only place that it is loosing coolant is out of the overflow. Quote Link to comment Share on other sites More sharing options...
BoostedRex Posted June 18, 2009 Report Share Posted June 18, 2009 The only place that it is loosing coolant is out of the overflow. If your head is not torqued properly or is warped you will lose compression into your water jacket. Which in turn will push water our your overflow. Quote Link to comment Share on other sites More sharing options...
Loc Posted June 18, 2009 Author Report Share Posted June 18, 2009 I will pull the head and see if it is all jacked up. Quote Link to comment Share on other sites More sharing options...
BoostedRex Posted June 18, 2009 Report Share Posted June 18, 2009 I will pull the head and see if it is all jacked up. If I were you the first thing I would do is retorque the head and see if it is still leaking. If that doesn't work then I would pull the head. Quote Link to comment Share on other sites More sharing options...
Loc Posted June 20, 2009 Author Report Share Posted June 20, 2009 Does anyone have a copy of the torque order on the head. I want to make sure I did it correctly. Quote Link to comment Share on other sites More sharing options...
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