Tri-Z from Hell... Sand Dragster

[CHAINSAW]

Today, the 85 dragster finally got her heart transplant. Here she is. I havent heard it run yet... cause I cant hardly kick it. I gotta jump up on the lever, and put all my weight on it, and if its not Top Dead Center going down, it wont spin.... I'll probably have to pull start it, until I get used to it. Or figure out some kind of de-compression release. I also have to make a spacer plate for the stator cover, cause the bolts on the flywheel stick out to far.
A few specs for ya.. 465cc 7mil stroker, cut gears, 85 Tri Z bottom end, YZ400 crank- narrowed and lightened, YZ465 piston, 42mm Mikuni carb. Well over 200 hours of machine work on this motor, and truley a one of a kind.










And compared to the 87 YZ motor that was in it.

[TrikeKid]

looks like one bad machine.

[twgranger]

That is awsome, looks killer.

[trikerider2oo7]

that would be one hell of a scary ride...is that the engine you got like 10 grand or more into?

[BigGreenMachine]

that is very impressive. looks great in stock colours. There is nothing overkill except the motor, to the untrained eye nothing but the swinger and drag pipe would make it seem like a threat, not a true sleeper but close. what did u mean by the gears were cut, less weight by removing a gear or does it change the ratio? Just noticed, the vented fenders look cool.

[mywifeknowseverything]

Hey bud,,,,That looks like it could do some damage....Are those Taller Haulers in the rear??? Where did you get the Front tire??? Very Very CLEAN
Maybe one of these days(Next Yr Maybe) We could hook up Somewhere Halfway at a Strip....
Two Z's out the Hole!!!!!! That should turn some heads....
BBBBBBRRRRRRAAAAAAPPPPPPP!!!!!!!!!

Congrats on a Excellent Job

[3WheelsForever]

That thing looks awesome Neil!! Its gonna be crazy fast! You happen to know if an 88 yz 250 clutch cover sidecase will work on a Tri-Z?

[Derrick Adams]

Holy mother!!! Now, please sell me your YZ engine!

[83185s]

holy shat that thing is one bad *** machine!!! id take it for a spin if i could!!

[AirManCam]

Damn Neil!! That suckers gonna be fast!! To bad goki didnt make a kit for that huh?

[Dammit!]

I think you might need a seat belt.

[MTS]

I think you might need a seat belt.

screw the seat belt you need a 5 point harnes for that thing

[CHAINSAW]

what did u mean by the gears were cut, less weight by removing a gear or does it change the ratio?

Cut gears just handle more HP from what Ive read. Its just less friction, so there might be a slight increase in HP, but nothing to noticable... mainly its done to handle the abuse from that massive top end.

You happen to know if an 88 yz 250 clutch cover sidecase will work on a Tri-Z?

Im not positive about the 88 cases. An 87 would work, but you would have to weld in a cover where the power valve goes up. If all the bolt holes would line up, I dont see why not, as long as the inards are the same.

Are those Taller Haulers in the rear??? Where did you get the Front tire???

Just regular 10 paddle Haulers for now.. what I was running the YZ motor with. If this motor holds together, and looks like something Im gonna keep, Ill for sure have to move up a lot in tires. The front was on the bike when I got it.. its a Nankang (sp?)

that would be one hell of a scary ride...is that the engine you got like 10 grand or more into?

If someone where to walk into a machine shop, and say "Hey, build me this motor" then yes. Including parts, I would say this motors net worth is just over $12,000 just a rough figure. I dont have much at all invested, because most of the motor was thrown in with my 85 when I bought it. I have a bit invested, but most of the hard expensive stuff was allready done before I required it.

[CHAINSAW]

Also, it had been brought up in the past. This is a picture of the flywheel/stator setup in the 87 YZ motor that was in the bike. Its made by Tryke, Trike, not sure of the spelling because I cant find any info about that company anymore. Its pretty wild.... wish I had another couple for my other Zs. Tell me that motor doesnt wrap up fast.. hehehe. Thats why that little 250 was so fast.. wouldnt have any jet lag.

[Pistonhead]

WOW, man you've outdone yourself once again, that is one sweet machine, I'm getting drool all over my keyboard just looking at it! I salute you! That will be one awesome ride, scary too!