spoolnvr4 Posted November 20, 2005 Report Share Posted November 20, 2005 (edited) NEW PICS UP ON Page 1 Post 13/14 Enjoy!!! So last week i sold my 99 Shee(T6 kit w/ 2:1 Filter) I loved that bike. But i wanted to finish my Mutt(ZX-7R powered Shee) So i sold the 99 to a friend. Today i came across a MINT mint MIINNTT 95' Banshee with Trinity 420, Brand New T5's, +2 Swingarm, PPI Shock,Trinty Head?? New ITP Whls/Tires & More... So of course i couldnt turn it down. The guy had replaced the top-end and it seized up within a few hours of riding. I checked and it looked like it had NO coolent in it. I picked the bike up and havent tore it down yet. But, i'd like to explore some options on this quad. I've been looking into these Cubs. The guy said the Trinty 420 was an animal and it would get out on his yfz450 by atleast 5 lengths... Truth or salespitch??? On average what does kind of HP gains would be seen from the Trinty 420 to the Cheetah Cubs??? Big bore no stroker. And whats the deal on the porting on these??? I see some place's including port work in pricing, and others offer it and then the cylinders need to be Nikel plated?? Thanks Bobby Edited November 22, 2005 by spoolnvr4 Quote Link to comment Share on other sites More sharing options...
iceman Posted November 20, 2005 Report Share Posted November 20, 2005 i would think it would get the yfz by like a thousand lengths. with all those mods andthe 420. your current hp would be in the 80s. 420s are cheetahs i believe. trinity sells cheetahs and cheetah cubs. the cheetahs go from 400cc-610cc and the cubs go from 358-443cc. so you might have cubs on it right now. you probably do. i think anything over 400cc youre gonna use a longer rod also. did you seize it up riding or was it seized already? you can get them ported for your riding style but if youve got cubs i dont think youre riding trails so youll most likely be getting a dune port or a full drag port. nikel plating just gives the cylinder a finish so they last a lot longer. Quote Link to comment Share on other sites More sharing options...
spoolnvr4 Posted November 20, 2005 Author Report Share Posted November 20, 2005 I have yet to take it apart. Im going to try and snap some photos of it later today or tomorrow. I think i got a smokin deal, compared to what i paid for just a roller about a Year back now. From what it looks like to me, looks liek stock jugs...??? With a Big aluminum Head on it, looks bigger than the average Cool head. But the jugs look stock. Im hoping to have the top end apart by tomorrow night. In all the reciepts there was alittle paper that said Stock rod... so im thinking it is just a big bore. This is what im assuming it is. http://www.trinityracing.com/products/yama...shee420kit.html Quote Link to comment Share on other sites More sharing options...
98bonerSTOCKshee Posted November 20, 2005 Report Share Posted November 20, 2005 my bud is in the process of rebuilding his 400 cub motor. If you ask me it sucks they cant be bored , it's gotta have the nickel plating redone with the same size piston back into it. Screw all that my stock motor has proven many atimes against his "trinity POS".. If I have done my research correctly any of the trinity motors above the 400 get long rods. You said the cylinders look stock? Trinity cylinder are a one piece design as to where the stockers are 2 seperate jugs I think... Quote Link to comment Share on other sites More sharing options...
iceman Posted November 20, 2005 Report Share Posted November 20, 2005 yeah if the cylinders are one piece then they are most definately not stock. if they are separate then they are stock. Quote Link to comment Share on other sites More sharing options...
Ruko Posted November 20, 2005 Report Share Posted November 20, 2005 I had a 420 kit from Trinity before I went to a Cheetah.... They work good and should defineatly smoke a 450. They are a big bore sleeve that is put into stock cylinders. They are cast not plated and start at 69mm bore and can go up to 71mm. I sold mine to a friend and it is still running great. They can be ported however you want and you can get tall or short pistons to work with stock length or long rods. I used the stock rods and just replaced the top end without touching the bottom. If it seized do to lack of coolant you would need to replace the pistons...and probably go to the next bore size. You will need to find out if it has long rods or stock before you order new pistons. Oh ya .... Trinity gets the pistons custom made from Wiesco so you have to get them from Trinity. I tryed giving my local wiesco dealer the number off them and he couldn't get them. Quote Link to comment Share on other sites More sharing options...
banshee x Posted November 21, 2005 Report Share Posted November 21, 2005 My friend has that same setup and i have a 421 Cub. Its night and day difference.Hes a hundred lbs lighter than me and even if he gets a good start i'll pass him halfway up the hill.I can beat him by an easy 4-5 bike lengths Quote Link to comment Share on other sites More sharing options...
Ruko Posted November 21, 2005 Report Share Posted November 21, 2005 (edited) I would agree that due to the new port design in the Cubs they should make more power than the old style 420 which has the stock port design, but if that is what you already have the 420 still works well. It will also depend on how you get them ported.... from what I've read the Cubs have more of a drag port right out of the box, where as the 420 can be ported however you want. If you were starting from scratch I would say go Cubs but if you already have a 420 why buy new cyl's. Edited November 21, 2005 by Ruko Quote Link to comment Share on other sites More sharing options...
spoolnvr4 Posted November 21, 2005 Author Report Share Posted November 21, 2005 Well in the packet with the original title, there is a Piece of paper that says Stock Rod, and which gaskets to use IIRC .030 Head gasket .040 Base gasket. Only reason i was considering the Cubs was because of there performance. Its coming apart later this afternoon. So 420 Trinty motors have 69-71mm piston's... What is the Stock Size? Quote Link to comment Share on other sites More sharing options...
Ruko Posted November 21, 2005 Report Share Posted November 21, 2005 Well in the packet with the original title, there is a Piece of paper that says Stock Rod, and which gaskets to use IIRC .030 Head gasket .040 Base gasket. Only reason i was considering the Cubs was because of there performance. Its coming apart later this afternoon. So 420 Trinty motors have 69-71mm piston's... What is the Stock Size? 439597[/snapback] The first size is 69mm. Then if I remember right they can be bored over size 4 times if needed to 69.5, 70, 70.5 & 71mm. You can use regular base gaskets.... I just got mine from the local dealer... but you have to trim they a little bit to fit over the bigger sleeve.... or you can get some from Trinity with your pistons. The head gasket is a copper shim which you have to get from Trinity... but it can be reused if it's in good shape. You have to spray it with some Hi-Tach or something like that when you install it. Cubs would definately make more power than a 420, especially if you go +4. It all depends on how much you want to spend, and I guess once you get it apart you will see what it will need to get that 420 back up and running. Quote Link to comment Share on other sites More sharing options...
sandman121383 Posted November 21, 2005 Report Share Posted November 21, 2005 ya i'd say try the cubs out if ur gonna be rebuildin neway. not that the 420 kits bad. so it's ur call maybe u can sell em? or just use em. tough luck tho hope u get it running again soon Quote Link to comment Share on other sites More sharing options...
rocketboy Posted November 21, 2005 Report Share Posted November 21, 2005 comparing trinity 420 big bore stock jugs to a 421 cheetah cub isnt much of a fair comparison by any means , the 420 trinity BB might make like 70 hp versus 95+ on a 421 cub. Quote Link to comment Share on other sites More sharing options...
spoolnvr4 Posted November 22, 2005 Author Report Share Posted November 22, 2005 oh man OH MAN.. the pics speak for themselves... I took some before pics too... Right after i pulled the reed cages out gave the hint to the problem. Enjoy. Quote Link to comment Share on other sites More sharing options...
spoolnvr4 Posted November 22, 2005 Author Report Share Posted November 22, 2005 Hmmm whats this??? Can you guess whats wrong with this? Maybe i can straighten this in a Vice? JB weld, dingleberry's good as new? Right? To think just 2 hours Prior it looked New... So its up in the air tomorrow i will get prices on everything. Both jugs the bore is ok. But the Bridge between the ports in the reed cage area, a bit broke off... I dont know if it can be repaired(add material and regrind the port) Also since the Rod needs replacement.. should i consider a Stroker. Whats the diff btwn a 4mm Long rod and a stroker. Does the long rod give more torque? If the cylinder cant be repaired i guess a new jug and a resleave/port by trinty will fix that. Anyone want to break it down Crank???$$ Jug???$$ Resleave???$$ Misc, Gaskets???$$ Thanks guys Quote Link to comment Share on other sites More sharing options...
Ruko Posted November 22, 2005 Report Share Posted November 22, 2005 From the look of those pics I guess you had a little more than just a heat seize.... That cylinder is done.... if you have to resleeve it you might as well go to Cubs. Same for the crank... and again if you're buying a crank might as well go +4. Also it looks like you still have stock carbs and reeds. That thing definately wouldn't have run anywhere near it's potential with ported 420 cylinders and stock reeds and carbs, so they will need an upgrade also. You're lookin at a couple G to do it all at once... that's Cubs, crank, carbs and reeds. The head should be ok to reuse, but you will need new domes. The 420 used big bore domes with a wire ring built into them. You should check with some builders to get exact pricing. I would recommend K&T Performance... There is also F.A.S.T., Passion, Patriot, etc etc... all quality builders. You could always find used stuff in the For Sale forum as well to try and same some chin... there is always lots of extra parts around. Hate to see pics like that... bummer dude Quote Link to comment Share on other sites More sharing options...
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