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dude im not a genius when it comes to this stuff but really, just measure how much room you have to mount on the back of your cart, and then just look up engine dimensions.

ya i havent seen any other springs in a 390 either. i guess i could try 26 but i dont really wanna get valve float....

well im not gonna over rev it... some of the stuff im getting is just incase. i dont wanna blow something. im not gonna run the rpm's THAT high.

well for me, its not fun if its not fast. i mean i have like 3 snowmobiles, a dirtbike, 3 other go karts one of which is a twin engine, atvs and all that kidna stuff and most of those things go over 50 or 60 so i wanna make this thing fun, not a drag compared to my other toys. and by the way...

its not a clone, its the actual honda gx390. by clone you meant one of those chinese made motors that copy the hondas right?

How much performace do you guys think I would get out of this engine, with alll of these mods in it. And dont say it will be too expensive, right now im planning and money isnt a factor. Honda GX390 Engine: No Governor UNI Air Filter 32mm Mikuni Carb with tuned main and pilot jets. ARC Billet...

the chances that it happens to you are very slim unless you are racing. it normally only happens when tires get interlocked and stuff like that.

ive flipped a cart like that before except mine kinda tumbled for a while before it stopped. probably wasnt going as fast as these guys were though. i can tell you that it definitly doesnt feel good lol

ya i know i wouldnt need a clutch... but im just saying it doesnt look like there is any sort of clutch or torque converter on the engine, and i know that most sled engines use torque converters, so do you think any random one would work on this engine?

ya that site is what first got me interested in that engine. also, you could always take a honda clone for muchhhh cheaper and do the same stuff to it

Ive stumbled upon that same engine, and im thinkin about putting in my kart with all the mods they have for it, it seems really easy. so any feedback you have for it for him, i would appreciate too!

well in the pictures, it looks like its just missing an exhaust and i probably need a clutch too. do torque converters work with sled engines cause i have one from an old sled. and it says the engine was never used so the carb prob isnt bad but ill check anyways if i end up getting this one.

and what exactly would i need for it other than a muffler... i dont really plan on doing anything to it?

How do you guys mount these snowmobile engines?

Thanks a lot man! im really interested in that last one.... looks like its in great condition, and so far, the bids are fairly cheap. And as far as i know, well he says nothing about it, but it comes with everything i would need?

yeah your probably right. so where would i go about trying to find one of these engines. ive tryed to google them, look on ebay, craigs list, and so far to no avail

well, i dont want a bike motor cause i dont want to have it be manual. id be willing to put a snowmobile engine in there, actually i kinda WANT to put a sled engine in there, but the problem is the hassle in finding one. im finding it difficult to come across snowmobile engines in the size and...

Ok so i was reading through a thread earlier and some guy suggested the thread starter get an aluminum fly wheel and then some other guy says "aluminum fly wheel, are you trying to get this kid killed?" I thought that aluminum fly wheels were safer because stock fly wheels can explode at high...

How about this engine: http://cgi.ebay.com/NEW-OHV-16-HP-16HP-Gas-Engine-Go-Kart-Cart-Gasoline_W0QQitemZ310094215769QQcmdZViewItem?hash=item310094215769&_trkparms=72%3A1205%7C39%3A1%7C66%3A2%7C65%3A12%7C240%3A1318&_trksid=p3286.c0.m14 With a few mods it should get me close right?

ya... unfortunately these are newer liquid cooled engines and arent "donors". It woulda been a fun ride if they were though. maybe in a few years ill take one of them apart...