First Time Rider
Arm chair racerNew to the board
350X top end on 300EX Bottom...?
Would it work? Anyone tried it? Sure would be sweet with E Start and reverse. Of course, I would expect to have to install the 350 piston at the least, but even if you had to change out the crank, rod and piston, it would be worth the effort.
I know the whole 300EX engine will go in the X frame with only a couple of minor alterations...
Last edited by Sargon2112; 06-11-2009 at 10:41 PM. Reason: Details
** '85 Yama-225DX (wheelie machine)
** '85 350X (current project)
** '86 TR200 FATCAT (Old Faithful)
** '91 KDX250 (The Green Machine)
Power User
The day begins with 3WW
he top end will never fit just use the 300 motor and if you nee dmor epower i belive powroll makes a 330 kit fo rit for a good price.
ok here goes, 85 atc70,2 84 atc70's 83 alt50,83 atc110 , 70 us 90 parot green, 85/86 350x garage queen, stock rider 85 350x, project 85 350x 85 250r drag bike, 2 85 250sx's, alt185, , scat tracker?99blaster,85 250r rider,85 250r ice racer project ,93 kx500,99 xr200r, 91 dr250s ,89 lt500 quadzilla,88 lt250quadracer, 88 trx250r race full on race quad,, 01 yamahakodiak400, kawaki kd100,lt50 for my doughters,93 300ex, 230 quadsport, lt185, lt250 quadrunner,84200s, is that enough?
Power User
Lord of the trike
I've always heard people talk about this hybrid and how the 350x top end should "bolt right on" but I don't think its ever been done lol
Rob
Power User
Catch me if you can
^ why do it anyhow? The weak link of the 350X is low oil/poor maintenance/backwards oil filter and they all lead to the same failure of the 350X head.
I consider the 350X to have a near bulletproof bottom end, ever seen a broken tranny on a 350X??
All our government does is distract us while they steal from us, misspend our tax $ and ruin our country
First Time Rider
Arm chair racerNew to the board
I agree, Dirtcrasher, and I'm not questioning the quality of the 350X bottom end. I know they are tough as nails.
My goal is to get e-start and reverse though, which is simply not possible with the original 350X engine in there. Looks like I'll just have to decide if e-start and reverse are worth 50cc's and some torque loss.
I have a spare 350X engine that runs but could use a rebuild. I'll hunt down a 300EX and just see what it looks like with the two side by side.
I appreciate everyone's input on this!
** '85 Yama-
** '85 350X (current project)
** '86 TR200 FATCAT (Old Faithful)
** '91 KDX250 (The Green Machine)
Power User
Got the holeshot
if the topend of the 300ex is the same as the trx300 then, no it wouldn't work withou some sorta adapter base plate. I have a trx 300 and 350x setiing in parts in my shed. The head will slide on the studs but it doesnt match up around the cam chain area.
The person who says it cannot be done should not interrupt the person who is doing it.
Rides
85 ATC350X
85 ATC200X
My Feedback http://http://www.3wheelerworld.com/...-for-Erics350x
Got The Holeshot
Arm chair racerJust too addicted
goki electric start and a big bore kit .... its a trike do you really need reverse? I know it would be "neat" but is it worth the hurdles ?
Last edited by KILLER; 54 Minutes Ago at 06:17 PM. Reason: beer
At The Back Of The Pack
Arm chair racerAt the back of the pack
As i was reading i was thinking the goki electric start to ,iv seen them on ebay more than once but i think the huge starter hanging off the side is kinda wierd and might get in the way but thats just me iv never seen one actualy on a bike befor.
05 Kingquad 70085 200x
85 250es
85 350x
85 350x rider project 85 350x (project) watch the progress here http://3wheelerworldforums.com/showthread.php?t=85959
Goin to prove you can polish a turd "so far it takes a lot of cash to buff that brown out'
First Time Rider
Arm chair racerNew to the board
Yeah, I've read a few posts from people who have tried those goki kits. Most complain that they are weak and can barely turn a 350X. Plus that cheesy starter hanging off the side like you said.
** '85 Yama-
** '85 350X (current project)
** '86 TR200 FATCAT (Old Faithful)
** '91 KDX250 (The Green Machine)
Power User
Catch me if you can
I guess for me, I'm always trying to remove weight from my 350X, I don't want to add anymore
A properly tuned 350X is 2 kicks at worst.....
EDIT - Apparently they do bolt in there somehow..... I half asssed read the auction and wondered why the motor looked odd to me
Last edited by Dirtcrasher; 06-13-2009 at 03:31 PM.
All our government does is distract us while they steal from us, misspend our tax $ and ruin our country
Got The Holeshot
Arm chair racerJust too addicted
Yep just got 1 every gear except 1 had at least 2 teeth missing. The crank was fine. I don't know what happened.Originally Posted by Dirtcrasher
Trikes: Cagiva 200, 85? Tiger 250,(2)84 200x's , (3)86 200x's, 87 200x, (5)85 350x's, (2)86 350x's, (2)85 250r's, 86 Tecate, (3) 85 250sx's Restoring: 83 200x, 86 250sx. Too many utility trikes to list.
At The Back Of The Pack
Arm chair racerFirst time rider
wrist pins are also a different size
Power User
The day begins with 3WW
basicaly nothign will interchaince from the 300ex to the 350x but the motors will almost bolt in with verry few mods to put the 350x motor in the 350x it requires a little trimmign on the cases to get it to fit into the motor mount so it should be fine on the 350x mount.
ok here goes, 85 atc70,2 84 atc70's 83 alt50,83 atc110 , 70 us 90 parot green, 85/86 350x garage queen, stock rider 85 350x, project 85 350x 85 250r drag bike, 2 85 250sx's, alt185, , scat tracker?99blaster,85 250r rider,85 250r ice racer project ,93 kx500,99 xr200r, 91 dr250s ,89 lt500 quadzilla,88 lt250quadracer, 88 trx250r race full on race quad,, 01 yamahakodiak400, kawaki kd100,lt50 for my doughters,93 300ex, 230 quadsport, lt185, lt250 quadrunner,84200s, is that enough?
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