bbcmudtruck Posted December 2, 2008 Report Share Posted December 2, 2008 I got to talking to a guy the other day about cool heads. He says that he machines the banshee stock head to except aftermarket domes! I asked him why, and he said because the orings fail more often than gaskets. He also said alot of people were doing it where he is from. I clarified that he wasn't talking about milling the stock head. Is this guy tooling me, or is he legit? Quote Link to comment Share on other sites More sharing options...
FASTOYS Posted December 2, 2008 Report Share Posted December 2, 2008 Might be legit BUT there are Hundreds of us on here that have never had any trouble with o rings or Cool heads. Plus they cool better than the stock head can. I think you would be money ahead to get a Cool head IMO. Quote Link to comment Share on other sites More sharing options...
05.Banshee.SE Posted December 2, 2008 Report Share Posted December 2, 2008 Even if I could do it, even for a third of the coolhead cost, I wouldn't. Quote Link to comment Share on other sites More sharing options...
bbcmudtruck Posted December 2, 2008 Author Report Share Posted December 2, 2008 I have run a cool head for over a year without one failure. I was mainly wondering if people were having heads cut to accept aftermarket domes. Quote Link to comment Share on other sites More sharing options...
2001Stroker Posted December 2, 2008 Report Share Posted December 2, 2008 The only thing that I can see gaining out of it is, it would make a nice sleeper setup. I know you can shave them to get the compression ratio that you want, but machining would at least let you change compressions. Quote Link to comment Share on other sites More sharing options...
NYUK Posted December 2, 2008 Report Share Posted December 2, 2008 i have seen it done way back. how do you seal the domes without massive amounts of form a gasket? it was a trick back when stock cylinders were the only thing around. the newer heads, noss,chariot, are so cheap machining a stock head isn`t dollar smart. think about it. Quote Link to comment Share on other sites More sharing options...
dajogejr Posted December 2, 2008 Report Share Posted December 2, 2008 I'd like to see his proof of Orings failing more often than head gaskets.... Quote Link to comment Share on other sites More sharing options...
bbcmudtruck Posted December 2, 2008 Author Report Share Posted December 2, 2008 Maybe I worded my question incorrectly. I'm not looking into this option, I was just wondering if this guy was really doing it. I completely agree with you. I'm going to try and get a picture of one of these heads. Quote Link to comment Share on other sites More sharing options...
Wiz Posted December 2, 2008 Report Share Posted December 2, 2008 I have had repeated cool head o-ring failures... Quote Link to comment Share on other sites More sharing options...
dajogejr Posted December 2, 2008 Report Share Posted December 2, 2008 I have had repeated cool head o-ring failures... So have I....when I had the wrong domes and/or too lean on the fuel. Quote Link to comment Share on other sites More sharing options...
RIPPEN Posted December 2, 2008 Report Share Posted December 2, 2008 Think dude musta drank the bong water.. Most all my buddies run a aftermarket head as well as myself and have had 0 problems with O-rings.. Like Dave mentioned I think the only time a person would have issues is if they installed them wrong or had incorrect parts.. Kills me some people still try to re-invent the wheel when it makes no sense.. Oh and also like John kinda mentioned.. All the crap you would have to do to try and make the domes seal would seem more likely to fail then O-rings.. And stop lying, you know you were wanting to do this killer sleeper super mod.. lol RIPPEN Quote Link to comment Share on other sites More sharing options...
fastbanshee8 Posted December 3, 2008 Report Share Posted December 3, 2008 The only time I've had an O-ring failure, is when the O-ring slipped out of the groove, and got pinched. It's happened once, in 12 years, otherwise the O-rings have been great. Another plus of the O-rings is, they can be re-used many times, unlike the stock head gasket, as long as they are still in good shape. Quote Link to comment Share on other sites More sharing options...
blowit Posted December 3, 2008 Report Share Posted December 3, 2008 (edited) The only time I've had an O-ring failure, is when the O-ring slipped out of the groove, and got pinched. It's happened once, in 12 years, otherwise the O-rings have been great. Another plus of the O-rings is, they can be re-used many times, unlike the stock head gasket, as long as they are still in good shape. ' First off, I LOVE your avatar or whatever you call it. The Obama pic. You need to send that to me! I want to hang it with some verbage like " can you answer why you voted for this guy?". Anyway, no one will ever sell me on O-rings in a head. Not saying they don't work and we may very well apply them to later head designs. However, the material properties and surface area make it very hard to bad talk a real gasket. You wanna bash resusing them? Simply buy a copper gasket and reuse the thing 100 times! You won't get that from O-rings. By the way, anyone know what caused the space shuttle Challenger to fall out of the sky in 1986???? It was not a gasket problem.... That being said, we will never cut out an OEM head to add new domes to to it. Why? Because that is too much work when a billet option is pennies away. You cannot fully hide those new domes anyway. Regarding cooling. Adding cooling the a 2-stroke head is like peeing on the back porch while the front door is burning. You need heat for proper 2-stroke combustion. You need cooling in other areas on banshees for sure but we have yet to have someone call and complain that our head blew up there engine because it ran too hot. IMO, either cut the stock head and rechamber like we do or buy a billet design. Brandon Edited December 3, 2008 by blowit Quote Link to comment Share on other sites More sharing options...
Wiz Posted December 3, 2008 Report Share Posted December 3, 2008 blowit, that post is on the money man.....you are correct the problems I have had with o-rings is not so much the o-rings but the pro-design head, I was running alot of compression and it was lifting the domes on the exhaust side and blowing them out once even taking a dome lip out with it. We machined the center section of the head down to get a better clamp but I still never trusted it so I changed heads, the guy that does my machine work (the best in the busniess) told me that he has seen many of these problems with the PD head and that years ago they were making billet inserts for the head that went on the front of the dome to give them more support also. Quote Link to comment Share on other sites More sharing options...
dajogejr Posted December 3, 2008 Report Share Posted December 3, 2008 I still disagree... I've seen motors with 220lbs plus of cranking compression, they just needed the right profile for their dome so they wouldn't smoke Orings. Check out the new design on the Chariot head. They are thicker to prevent this as well.... Quote Link to comment Share on other sites More sharing options...
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