Thoughts on 13:1 440 engine

[440_Turtle]

Whos running one and whats the engine life of one of these?

[underpowered]

my buddy has a 13:1 440 bore with a +4 stroke. So far reliability is great, has not had any break downs since the motor was built in early october last year.

[440_Turtle]

so is it a 440 bore or a 426 with a +4 stroke?

Also what kind of gas is he running?

And another thing, did he use the hotrod crank and connecting rod or the stock crank and rod? Im looking at buying a used bike and thats what hes telling me hes got in it and im a little weary about buying a bike with a possible time bomb for the engine. The engine was built by legacy atv in NC and they are a respected shop so that helps me some but still got my worries.

[underpowered]

it is a 440 Bore, +4 stroke to make it a 460cc. He runs straight 110 race gas. it has a hot rods crank in it, GT thunder HD head studs, JE piston, +1 valves, port and polish, full GT thunder shorty exhaust, hotcams stroker cam, 450R carb. The bike is absolutely the best running 400 i have ever seen. it revs amazingly fast for what it is.
I would ask for some paperwork on the motor to verify where it was built at. Even though i build my own motors and partially built the 460, i would be wary of buying something not put together by a shop.

[440_Turtle]

110 octane.....HOLY $hit, isnt that stuff liek $10 a gallon.

[underpowered]

Originally posted by badass4man
110 octane.....HOLY $hit, isnt that stuff liek $10 a gallon.

really depends on brand. i can get Klotz 100 or like 113 like $9 a gallon or whatever the local dragstrip sells for $4.50 for the 110.

[hondaboy400ex55]

i can get 5 gallons for 45 bucks VP RACE FUEL



of you can get JET fuel (airplane gas) it like 119 or sumthing like that for 6 bucks a gallon at the air port

[440_Turtle]

dear god, im only looking for a strong trail bike. Looks liek i might have gotten in a littel over my head. Yeah im calling him tongiht and hopefulyl he can answer alot of my concerns
:ermm:

[underpowered]

on that you would have to run race fuel. if you want a good trail bike, anything about 11:1 or lower compression will be able to run on pump fuel (premium)

[thebigsd]

i have a 440 13:1 je piston run straight 110 if im riding real hard other than that i run half 110 and half 91 it was built about a year ago if not longer still screamin so the only problem ive had is with my battery way worth it