NickisGod Posted August 11, 2012 Report Share Posted August 11, 2012 i never knew they made a banshee head to fit a cheetah. Quote Link to comment Share on other sites More sharing options...
moneybags Posted August 11, 2012 Report Share Posted August 11, 2012 Not trying to hijack the thread but. I just picked up a banshee that someone elce started building and never finished. They went to trinity back in 2006 and had them build a 421 cheetha PV motor. The motor has never been started or even seen gas or oil. Anyways. If one of you guys had this motor what would you do with it? Just run it tell problems show up or send it out to have another builder go over it.. Or post it for sale... Do any site builders have a repuitation for the cheetha PV motors? I want to keep it a duner motor. Info please Thanks Quote Link to comment Share on other sites More sharing options...
RadarRacing Posted August 11, 2012 Report Share Posted August 11, 2012 I'm still right about the head. Lol. A 392cc cheetah is a powervalved 68mm bore 54mm stroke , a 421 cheetah is a 68mm bore/58mm stroke. Those are the two cheetahs that can use a standard head. The 4mil cheetah as we all usually understand it 73mm bore is actually 485ccs and that motor on up has to use a cheetah head. He said 421cheetah and they do make them. Quote Link to comment Share on other sites More sharing options...
Coupelx Posted August 11, 2012 Report Share Posted August 11, 2012 my 392 uses the cheetah head. Quote Link to comment Share on other sites More sharing options...
WINDYCITYJOHN400 Posted August 11, 2012 Report Share Posted August 11, 2012 Not trying to hijack the thread but. I just picked up a banshee that someone elce started building and never finished. They went to trinity back in 2006 and had them build a 421 cheetha PV motor. The motor has never been started or even seen gas or oil. Anyways. If one of you guys had this motor what would you do with it? Just run it tell problems show up or send it out to have another builder go over it.. Or post it for sale... Do any site builders have a repuitation for the cheetha PV motors? I want to keep it a duner motor. Info please Thanks Don't start it till you the very least get some custom cut domes for it. (Call Titan Racing) Or send the whole thing to a builder who has worked with the Power Valve motors. Ignore the existence of Trinity in this universe.....you weren't personally violated at this point, so don't give them the chance. I'm still right about the head. Lol. A 392cc cheetah is a powervalved 68mm bore 54mm stroke , a 421 cheetah is a 68mm bore/58mm stroke. Those are the two cheetahs that can use a standard head. The 4mil cheetah as we all usually understand it 73mm bore is actually 485ccs and that motor on up has to use a cheetah head. He said 421cheetah and they do make them. Sorry,my bad. Too many destroyed 72mm and 73.5 mm pistons over the years to remember that my original "400 Cheetah" had the smaller pistons. Whatever head he uses.........the domes better not be from Trinity. Besides, if all he has is a crank and a head shell......he should really think hard about that motor choice. Quote Link to comment Share on other sites More sharing options...
RadarRacing Posted August 11, 2012 Report Share Posted August 11, 2012 Well crap. John is still fulla crap tho. Lol. A 421 uses a cheetah head too then im sure. I would love to have a lil cheetah someday for a flat track bike. Quote Link to comment Share on other sites More sharing options...
PassionRE Posted August 11, 2012 Report Share Posted August 11, 2012 Not trying to hijack the thread but. I just picked up a banshee that someone elce started building and never finished. They went to trinity back in 2006 and had them build a 421 cheetha PV motor. The motor has never been started or even seen gas or oil. Anyways. If one of you guys had this motor what would you do with it? Just run it tell problems show up or send it out to have another builder go over it.. Or post it for sale... Do any site builders have a repuitation for the cheetha PV motors? I want to keep it a duner motor. Info please Thanks Chances are its a lazy pig that will detonate itself apart if Trinity set it up.....seriously. Beyond impressive is within your reach easily though, if re-configured. Quote Link to comment Share on other sites More sharing options...
theneil Posted August 11, 2012 Report Share Posted August 11, 2012 Farm and sand toys is your best bet. DONT torque CLUTCH SPRING BOLTS TO 10 NM, just hand tighten with a small ratchet Quote Link to comment Share on other sites More sharing options...
camatv Posted August 12, 2012 Report Share Posted August 12, 2012 cheetah castings have a far better head design and shape ( the shell) it is far superior to the OEM banshee cub ass clamp set up. proper domes are key. if i had that motor from 2008 or whatever i'd strip it down completely and redo it entirely. at least re lube everything and update a few things if it needs it. then go over the head and port specs along with crank specs ?trueness and piston to wall clearance. if all that is ok. i'd adapt a newer designed head shape to the domes and run it. a 421 cheetah is a beast of a motor IF it is set up correct. IF done right they have the capacity to out pull a cub out of the hole AND overrev harder with more hp support up top. again IF done right. no matter what calvin hit it on the head with that particular engine design. ( in my opinion) its just a shame they have run out of popularity so bad. Quote Link to comment Share on other sites More sharing options...
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