So you really didnt do it? You should have. A friend of mine shoved a lt500 engine into the lt250 frame and ice raced it. It was a helluva screamer in the striaghts and it cornered better than the zillas.

 

one word... LOSER.

 

That was lame. Back in '85 or '86 Dirt Wheels had an article about a Quadracer with a CR 500 motor stuffed in it. Worked out prettly well.

 

Back in '87 or '88,3&4 wheel action ran an article on some guy who shoe horned a 750cc streetbike motor in a 250r if I recall right for sand drags. Looked funny as he!!, too, cuz his seat was sitting almost right on top of his swingarm.

 

you no u didnt have to put us through that.. just name the post show me your project bikes.... porbably get more ihts that way. herb.

 

Hey Zuk, Your right on the mark with the rod length, the bore diameter will be 97mm... pretty big eh?
I haven't taken any photo's of the project yet... I prolly should I guess... Right now it looks like a frame that's been in a fight with a sawzall... and lost.
I'm hunting for some decent used LT500 shocks (Front and rear) to use... I see them all the time on Fleabay, but they are bringing more than I'm willing to pay for that vintage and unknown usage...

As far as the motor... I only have the cases finished so far... new STEEL inserts, and appropriately trenched for the longer stroke. Still waiting on news about rod/sleeve/piston delivery times. I think I'll be really lucky if I have this ready for next summer... It's already been a couple years on the making.
Building a long travel buggy really put this project on the back burner.... Need to get off my butt and finish it up.

 

hey dune did you get that piston made by wiesco? hey zuk, i posted a reply last night but it doesnt look like it posted, let me know when the next drags are and maybe i'll bring down my 250, i would love to see what it can do, and i would like to see your bike, if you want i can bring my digi cam or camcorder.

Mark

 

Ok marky I'll let you know,Duneaddict,Is that Piston from a sea-doo?Man 97mm crap that's huge.How much is that piston costing you?What is the price on the sleeve and is it from a sea-doo?Is your builder costom cutting the porting for it,I mean the sleeve is going to be blank right?Crap know you have me thinking again on getting the Zilla built bigger.Who is doing your work and can I trust them.I've heard so much crap about ppl. getting ripped off and I don't want none of this stage 4 crap.either the person port's it or he don't,I don't want to pay for paint scratching if you know what I mean.
I really think that if I had it mega bored @ 97mm I definatly could reach the 3.9-4.0 time's on gas and without N.O.S.Heck with that work your having done to my calculation's your engine should be roughly around a 600cc correct?Do they have to do anything to your case's to make the rod length work?Man Dune,my head is just spinning with idea's nowIf you was to get that set up working good the Shee rider's will be suprized with itand if your going to run alky man watch out banshee guy's.Sure wish we lived closer,the secret weapon we could build.

 

actually zuk, if he is getting the piston made by wiesco and its the one i heard about it's supposed to be about a 635... thats nuts...

Mark

 

635!!!!!cc's!!!I changed my mind,NOT SELLING my Zilla.Got some really good idea's in the knoggin,I gotta find out more on this Dune need info on this please,thank's Marky.