xuberantz

Trinity big bore LR motor, 71m engraved into the 20cc domes on the trinity stage iv head.. pistons are 68.92mm big... The domes use "Fire rings" which instead of orings it uses a copper headgasket... I see copper head gaskets available in various thickness which i've found what the old one was but what size bore do I get for the copper headgasket? Do I get the 69mm to match the piston size, or what because I can't find a 71mm like the dome says only 70 or 72... Also what kind of squish am I looking for? Any insight would be greatly appreciated, trinity is a pain in the a$$...

Is this the trinity 420?

Compression was 125 on both cylinders and the domes are 20cc and i'm at about 795ft elevation... I was getting coolant being pushed from the overflow while hard on the throttle even after a new cap. gasket is solid.

Probably about as thick as a quarter give or take... and the copper head gasket with the head has me baffled...

Around the edge I'm pretty the pistons sit flush the top of the cylinders. there is porting in the jugs that I didn't mention also (not sure by who)

Probably so it's been squished down a bit

I ordered Trinity orings for my head because of an internal leak and now I'm trying to do some investigation as to what's done on this thing as I finally started tearing into it.. It has a Trinity Stage IV head (ugh I know), that uses orings and I got a big wtf when there was a copper gasket too???? big wtf The Trinity Dome says - 71M - 20cc - 12 deg The Piston is 68.92mm which I do know is larger then stock (not sure how large)... The Base gasket is metal for some reason? Not sure why but it's defiantly metal... The rest of the mods are - 35mm carbs with k&n pods, t5's, vforce 3 reeds, mattoon billet clutch cover/lockup clutch, billet impeller.. I've never ridden a completely stock banshee but it had some serious pull to it. Here are some pics I took today, any help about everything listed any insight would be greatly appreciated. I just want to get this thing back together correctly.

That'd be awesome ... I didn't think to even try calling till it was to late this evening..

Great suggestion I've been doing my research about this head and I don't like what I see... If the orings don't solve the problem then I will be picking up a chariot or noss head and be done with it...

I ordered trinity orings a few days ago before I started pulling the head off today. I didn't notice that two of the studs were slightly extended and thought that may be the problem instead of the orings...I didn't get the head all the way off, I stopped when I realized the different studs/nuts and went online to see if that was right... I noticed it wasn't, and got to thinking that may be the problem instead, but then I thought doesn't the dome have it's oring that keeps compression away from the water so the stud shouldn't have anything to do with it whatsoever? I'm really new to this all.. I guess i'll have to slap the new orings in and give it a whirl when they get here...

It'll happen when the water is 130 degrees, no bubbles at idle but as soon as you give er... she spews... illet impeller... and It should be centered? it has 8 of the regular acorn nuts on it, and 2 that aren't the original...

Nope previous owner put longer studs in two holes and used two different kind of nuts. Not sure if this is causing the problem, or if it's the orings. I didn't notice it till a few days after i bought it I started noticing coolant disappearing and dripping in the front out of the overflow house. With the overflow hose off the radiator in the front it will spew coolant like crazy when driving it with any kind of aggression. I suspected the orings obviously, but I wasn't sure if it could be the two other studs that don't have acorn nuts extending into the head blocking some kind of passage causing this issue... or if it's simply a bad oring.

The stock stud doesn't stick through the head the Trinity head uses a special acorn nut that goes down into the head to reach the stud... I'm not sure if that seals anything around the stud from leaking or not I'm new to all this lol I'm about to replace my first set of orings...

For those of you familiar with the Trinity Stage IV head, I was wondering if I could use extended studs and regular acorn nuts instead of the acorn nuts that go down into the head to reach the stud. I don't see any point in paying $12 a piece plus the cost a shipping for the acorn nuts if I can just use my extended studs and regular acorn nuts. I'm not sure if this would cause a coolant leak or cause any issues as right now I'm having issues with my 'shee pushing coolant out the overflow when hard on the throttle... I've replaced the rad cap, now i'm going to replace the orings in the head.. Thanks for any insight..

I need 2 acorn nuts for a Trinity Stage IV head. I will buy them all if the price is fair, but only need two of them... Trinity's price is outrageous... Thanks in advance!

It's coming from the overflow hose where the radiator cap goes on. It appears the hose is zip tied down the front of the frame. I went out today and forgot to double check the coolant and the bike got warm fairly quick so I've decided the head has to come off so I can properly address this issue. I'm going to double check to ensure there is a billet water pump installed as the previous owner said... I'm also thinking of picking up a larger radiator, but that is not set in stone as it does not overheat as long as the coolant is topped off. I think I will pull the trinnity coolhead and check the orings... Is there anything specific I should be looking for while doing this? I've heard some bad things about these heads, should I just buy something else? I'm also thinking of installing a temperature gauge, as the temp stickers aren't the most accurate thing in the world... any suggestions for that would also be greatly appreciated. I did have a trail tech installed awhile back on my 250r and it worked awesome... I also like the ESR temp gauge, I just don't like that I would have to lean over every time I wanted to check the temperature... What do you guys think?

The reservoir is there, but I'm not sure if it's hooked up. I'll have to double check that. I am filling it up to the top though and have thought maybe it's just getting rid of the excess... I'll keep an eye on it I guess.

I picked up my first banshee late last week, and I finally got around to riding it a few times and I noticed there is coolant dripping from the front. It looks like it's coming out of the hose that connects at the radiator cap. The previous owner has the hose zip tied down the frame in the front. I picked up a new radiator cap thinking that it might be bleeding off pressure and that doesn't seem to be the culprit. I haven't put an actual temperature gauge on the bike yet but I attached two heat stickers to the jugs and the highest reading I've got was about 171 (obviously the coolant would be hotter). It runs great, and isn't dumping a ton of coolant or anything I attached a bottle to the hose and I lost about a cup of coolant when I went out for a ride... I've noticed it dripping coolant before it even warms completely up. If I open the cap and let it idle I didn't notice any bubbles, coolant doesn't seem to really "flow" though unless I rev it? I was told it has a billet impeller but I'm not sure... I've done some research on the issue and it seems to be semi-common... I don't think it's the rear overflow leaking simply because every time I've looked it's between the low and full line....I just don't want it to be overheating and I cause damage by not properly addressing the issue. The bike does have a cool head, and it says "stage iv" I'm not sure who makes it, perhaps it's a bad oring or? any suggestions would be greatly appreciated!

I've been looking for a decent Banshee in my area since this time last year and I've never been able to find something in my price range ($2500) that I was able to pull the trigger on. That changed today though, and I brought home an 02! I'm new to the Banshee scene, but have owned a number of two strokes in the past. I recently got rid of my 250r and I've been stuck with my 04 400ex, and my 2003 predator 500. I'm so glad to have another 2 stroke, and stoked I got the king of em! Anyways, I'm still learning but it has Toomey T5's, Vforce 3 reeds, Keihn 35mm carbs, lockout, and more... (It's also lowered, which I will probably be removing for the time being) The only thing I'm 100% sure of is it's CLEAN and runs really strong. Here are a few pictures for good measures. http://imageshack.us/photo/my-images/19/imag0013le.jpg/ Hope to learn a bunch, and have some fun here