Tri-z 500?

[TexFest]

Is there ever going to be a tri-z 500 built by anyone here on the board?

I've seen 500r's and tecate 500's, but no tri-z 500 as of yet

[factoryX]

no, yz 490 yes. there was no yz500

[fabiodriven]

That's a damn good question-

[Yamada]

Do a search on the forum for Bryan Raffa's Drag Tri-Z 490

[Tri-Z 250]

There is a 500WR YZ motor that could be used, two-stroke as well as a wide ratio gear box. My question is WHY? With the 450YZ thumpers the 500cc is out. I would look to a 426cc YZ as a buildup motor (5 speed gear box)...the value of the bike is low and anything built as far back as 2002 will only pull $2800 no matter the condition. You could very well get an 01' beat bike for around $1100...sell off all extra parts and it would be an almost wash and keep the cooling system, electrics, motor and gearbox.

[Louis Mielke]

I wouldn't say that the 500cc bikes are out. Just not for a weak of heart. They can be beaten into submission, course they also beat you to death. Mine's been trying to kill me for a while. I keep getting lucky and dodge the bullets.







The big two strokes do wear you out a lot faster. The new 4 strokes are like butta. For pure power and speed its still hard to beat the big bore 2 strokes though.

[Tri-Z 250]

no doubt top speed the 5 hundy is sweet. Dune or Drag flat track sure moto I'm going 4stroke new generation YZf

[fabiodriven]

I'm in the midst of an 86 Tecate 500 build and no doubt it will be sick. I wouln't mind building a nice thumper too, though. Why not have all of 'em? It's like having your cake and eating it too!

[300rman]

My buddy used to race motocross, and he had a 500 for a very short time. he got rid of it for one reason: it has way too much power.....he sold it for a crf450.
he complained that the 500 was a wheelie in every gear with the throttle opened up. i rode his 450, and i had no problem keeping the tire on the ground on the ASPHALT ripping through the gears.

so i wouldnt say the 500 is a weak, phased out motor.....just way too powerful for 90% of riders....... my dream bike is a 02CR250 with the 500 motor in it.

[cr480r]

450's no doubt make user friendly power... But a 500 is a lighter and cheaper alternative... and can be tuned/de-tuned to be whatever you need it to be... a cheap clapped-out 4-stroke donor bike will prove to be a money pit in the long run... low hour engines=$$$

[Red Rider]

The modern 450cc 4-strokes were built to compete with 250cc 2-strokes, so anyone wanting to put a 500cc 2-stroke engine into a 3-wheeler will be unimpressed if they go with a 450 4-stroke instead.

[Louis Mielke]

The modern 450cc 4-strokes were built to compete with 250cc 2-strokes, so anyone wanting to put a 500cc 2-stroke engine into a 3-wheeler will be unimpressed if they go with a 450 4-stroke instead.

Also of note, most people who "want" to put a 500cc 2-stroke in a trike
haven't ridden anything that big and have no idea what they're in for.

[thefox]

Didn't Chainsaw have a Z with a CR500 motor in it? It was all painted flat black.

[fabiodriven]

All three of you guys (Red Rider, Louis, and CR 480) make very good points. I personally don't think there are any 4 stroke dirtbikes that can keep up with a properly running 500. They're just ridiculous.

[Bad Karma]

The CR500 is a beast, no doubt. My 2000 CR500 has hurt me a few times... I'm starting to convert my 1985 CR500 into a 3-wheeler now. I'll post a buildup thread when I get something done that's worth looking at.