Big Bad Red

[Mondexbrute]

Hey everyone! Well my 1985 Big Red is almost done with the rebuild! I put a 4 stroke tech 305 big bore kit in, a brand new cobra exhaust system. The racks, headlight guard, footpegs, kickstarter & frame have all been powdercoated black. I was wodering if I am gonna have to get a bigger carb or maybe re jet it cause of the exhaust & bigger displacement (from 248cc-305cc) & I will put pics on here as soon as I get it all back together!

[steven 250sx]

pictures !!!!

[SYKO]

sweeet man!! you need to bring that to the motoplex for the dec 15th race!! DETAILS in the racing forum.

[RedRider_AK]

Yeah you'll most definetely have to rejet. If you want to keep it as a "torque monster" you can keep the stock smallbore carb, it will make more power from idle to 3/4 throttle. A larger carb will make more power at wide open.

WE NEED PICS.

[Name Brand]

4 stroke tech 305 big bore kit ? Tell me more!

[Mondexbrute]

well big red was smoking ALOT! Rings were gone! So I had planned on just putting new ones in, & my buddy said "well why don't you just call up FOURSTROKETECH & order a big bore kit", I was like they don't make anything like that for a BIG RED! Well they do make them! It costs $307 shipped to your door! It cosists of a bigger piston, new rings, sleeve & gaskits. Its not done yet, will be picking it up sometime this week! So wish me luck!

[Mondexbrute]

any idea where I can find bigger jets for that carb?

[RedRider_AK]

You can probably get them at your local Honda dealer (or any dealership for that matter) or get a "power up" kit for the Big Red (K&N filter, jets)

[Mondexbrute]

do they make a power up kit for the Big Red? I have a UNI filter on it now! , also I want to change the front rim & tire out, I want to use a newer style Alum. rim like An ITP has to be a 12" rim , any ideas?

[RedRider_AK]

What's the front offset and bolt pattern? You could probably get a 12" aluminum rim, don't know for sure though.

As for the power up kit, not totally sure about that either. I am willing to bet you can get a jet kit for it though, Dynojet or something. Maybe just see what jets are in it right now and get some Keihin or whatever jets with a good margin of error, and then dial it in.

[Mondexbrute]

bolt pattern is 4/110 don't know the offset! I am also putting 26" Outlaws on the back with 12" rims of some sort!

[TravEX]

4/5 is the offset.

And, 'rims' are on a bike, "wheels" are on trikes and quads.

[RedRider_AK]

Yeah if you can get a 12" wheel with 4/5 offset and 4/110 bolt pattern that'd be sick!

I think it's not gonna fit 26" outlaws in the front, without modifying the fork length.

[SYKO]

get a 12 inch REAR rim and have it cut and rewelded buy a machine shop to the correct offset you need for the front, I have this done for my 250R racer so I can run a 10 inch front rim for better tire selection, and its fairly reasonable, just find a plain steel or aluminum rim and have them cut the difference out and reweld it back for you.

[tyman]

since the big red has a drum front brake, u'd need to get a big bell wheel, i would think.... keep that in mind... ofcourse you could always make your own bracket and use disc brakes and a disc brake front hub assembly? that would be neat...