trying to beat joe byrds 450r with a z

[bzerk]

i was wondering what yamaha 2 stroke egine i could put on my tri-z im wanting it to be atleast a 450 i have a friend who has a 450r he bought it from joe byrd i dont know if any one here knows him but anyways joe is a pro racer he has a quad school in union city tn anyways he sold it well above race ready and i want to beat it and i dont think the big bore tri-z is going to cut it so if anyone can help with this matter i would greatly appriacte it

[SWIGIN]

i raced against a few quad pros and a few of there bikes once sold.....as far as the old 250r pro quads went they werent crazy fast.

it was all rider but i havent bin around to many pro 450's....plenty of built to the hilt pro quality quads but no real pro 450's.

im betting they do run like a raped ape compaired to a ''normal'' built bike.....but as far as a 450 or bigger 2 stroke motor i dont know.

why not use a 450? fight fire with fire....you are lighter...lol

[Tri-Z 250]

I knew Joe when his wife Heather left home to become Mrs. Bird. Joe is a nice guy(had a big tallent ego back then) and very decated to the sport of Quad racing. His 250R back in the day was NOT a powerhouse. He liked smooth power that was trackable. Do I think a bigbore Tri-Z would beat his 450r bike in a drag? YES but I'm bias. These new 4stroke engines come pretty much built. You can mod things like valve degrees, cam and ports but the old over port and pollish, with a shaved head to bump compression are gone. So if I were to guess how modded that motor is I'd say very little(Joe couldn't afford to blowup and I doubt had the budget to buy more than 4 motors for the season from DASA). How does anyone win a National title....show up to EVERY race and podium....If you had the money and wanted to win the open class title show up to every race and place top5...Just ask Scott Buttler who raced for Trinity. It's mostly rider...$ does play a huge roll in how fresh your bike stays throughout the season. I watched Mark Baldwin go from MMI to pit mechanic to PEP rep to his present team owner over those years....Working for Mr.White building his son Justin, Gary Denton, and Timmy Farr's machines. It wasn't that anyone of those bikes were faster than the field...They were the freshest on the gate for sure.

[tecat-z]

Seems you're talking about pure power as in a drag type race. With a tri-z based engine, good luck. Pro built engines are very stout, just watch a pro quad start. I've seen them at Red Bud many times at the nationals. HUGE POWER!!!! No late model yamaha 2 stroke is gonna be bolt in, so heavy mods will be necessary. Prolly not worth it to still loose. Tri-z engines can be made fast, but there will be big sacrifices in low to mid power, and not a good all arounder. That's why 450's are the engine of choice. Power everywhere.

[bzerk]

man im tellin you he may have not had the moey then but he damn sure has the money now. a buddy of mine names clint by the way he bought the bike for a little ubder 18 grand from him i also know its got some donk hella more than any tri-z i have ever seen around my parts altho i have yellow fever and have to say tha hell with red and green this honda hes got is a monster and i jus want to know if there was ever a stout yamaha 450 or bigger 2 stroke able to take a beating im build it for jus one race then in tha garage it goes so thanx for the input and please keep it comming

[hondawasaki]

I agree with Tecat-z, the 450's stock are pretty tame, soup them up a little, and they make big power. They are deceivingly fast, because they make power everywhere. My 500 tecate, will beat most, but thay are closer than you would think.

but to answer your question, a late model R1 engine would suffice!

[Yamatrike400]

I would use a YZ465 or YZ/IT490 engine! Beat him with an air fooler! The 490 is crazy - has power on demand, and freakin' fly's. I think that would be one badazz swap.

[300rman]

mmmmm cr500. piss on those 450's.

[Mosh]

A properly built, and tuned, big bore 310 Tri-Z WILL beat some mild built 450s.......In a 300-500ft drag race.

[Derrick Adams]

That 450 is making upwards of 60hp if his national motor is still in the bike, so you better AT LEAST put in a 500cc 2 stroke. The Honda CR500 is close to a direct bolt in. Might try that.

[bzerk]

the i looked at the 465 and 490 but heard really bad reports especialy on the 490 vibraton so bad breakin motormounts and ratteling everything loose but if the price is right that would be an opion

derrick for tha z i was wanting to go yamaha but if the price is right i guess tha red could work. do you know if somone makes a conversion kit (motor mounts) for a z

[3leggeddog]

hmm,my 450r is not a pro bike by any means,just a good head port,oversized valves,a good pipe,and a cam.makin upper 50's at the wheels.I walked Louis's cr500 and Jason's crf 450 3 wheelers down the road till I ran out of gear.soooo................better get your self a serious motor my friend

[Louis Mielke]

haha. Too bad I couldn't keep the front end down on the blacktop. :-P

[bzerk]

well in that case what do you guys sugest

[Yamatrike400]

the i looked at the 465 and 490 but heard really bad reports especialy on the 490 vibraton so bad breakin motormounts and ratteling everything loose but if the price is right that would be an opion

derrick for tha z i was wanting to go yamaha but if the price is right i guess tha red could work. do you know if somone makes a conversion kit (motor mounts) for a z

Its honestly not THAT bad. I think a trike would dissipate the vibration better too. If i were to do it i would use rubber/ polyurethane bushings in between the engine and mounts. These engine have more torque than you would believe. Honestly you can chug it like a 4 stroke yet open it up and it'll scream just a like a 2 stroke should.