Gonna build a go kart!!

[pmat]

Isnt 100cc like 10hp? thats better then most karts already, another good thing about dbike engines is that their not limited to 3600rpm

 

[Kaptain Krunch]

100cc could be 10hp,could be 5. it really depends, My 125 2 stroke bike puts out a little over 24HP. I just know you will be much happier with atleast a 200, especially if your planning on going off road, or gearing it higher than a top speed of 30-35mph.

 

[pmat]

i will try to find the biggest engine, if it is water cooled, where would the best place to put a radiator be on the 2 seater? and could i use a few fans out of computers, and wire em to the stator(for a radiator)

sorry i am asking so many dumb questions, i just wanna do it right the first time

 

[Kaptain Krunch]

Computer fans wont cut it, get a decent car radiator fan or put the radiator in front of the cart, bikes generally use the wind pushing air through the radiator instead of a fan so that would work well. But if possible use a air cooled,much easier.

 

[pmat]

sounds good, now for the fuel problem, those engines are usually gravity fed, so, is it possible to hook up a regular riding mower diaphram pump?

 

[Kaptain Krunch]

I'm not sure about a riding mower fuel pump but a snowmobile one might work. But you would have to tap the crankcase, probable not worth it.

 

[pmat]

mkay, and what do you guys think of the harbor freight wheels?

 

[r_chez_08]

aparently they are **** but i am using something similar for the front wheels. they look ok, but i would suggest something slightly more heavey duty on the axle.

 

[pmat]

would they be fine for the back for like a month until ill be able to get more money to buy better stuff?

 

[r_chez_08]

probably, there are some mods you can do, like welding them up and new tires/ bearings. you would have to remove the bearings to use them on the axle

 

[pmat]

another noob question... when i go to the junkyard for an engine thursday, how can i tell if the engine / trans is any good?

 

[Affair_driven]

Depends on junkyard.
My local guy will guarantee that what I want will work.
Doesn't say for how long. Usually, the more you pay, the better it is. It's a crap shoot to be sure.

 

[Kaptain Krunch]

Depends if you find a bike and get the engine yourself or if the guy there has already removed it. chances are you are going to want to freshen up the engine anyways.

 

[pmat]

yea i dont mind rebuilding a carb or something like that.
so would it be safe to say if the starter spins it ,it can run?

 

[Affair_driven]

would it be safe to say if the starter spins it ,it can run?

No, need to hear it fire up.

 

[pmat]

yay starter fluid

 

[Kaptain Krunch]

By freshen up i meant new seals, rings, oil change if its a 4 stroke (of course), rebuild carb...That may be a bit overkill, but a rebuilt engine will not only put out more power but run smoother and last longer.

 

[pmat]

how hard is it to put rings on? ive never had to do it

 

[Affair_driven]

yay starter fluid

Teaspoon of gas in combustion chamber would be better.

 

[Kaptain Krunch]

how hard is it to put rings on? ive never had to do it

easy, may be a 2 person job but its not hard at all. Its not required to rebuild, and if you only have $100 then i guess not rebuilding it is fine depending on condition. I've just heard bad stories about junkyard engines. My friend bought a big block for his truck from a junkyard, got it installed and 5 miles down the road it blew.