yamaha blaster race quad, what will make it faster??

[ruairiyblaster]

I race in the standard blaster class, no powerpipe allowed , im only allowed a 2mm overbore, a standard carb and standard crank.

Im never higher than fifth gear and there is alot of low gear corners in the track.

It has full port and polish, skimmed head, opened and gutted exhaust, advanced timing, metal removed from crank, 66mm wiseco piston, v force reeds, iridium plugs and premix on good 2stroke and run on race fuel.

Ive got a lightened flywheel, and a monster amr coil on the way.

Anyone know what will make this bike faster??

does a hotrods standard length crank make much of a difference?, might put one in even though im not aloud itt?

 

[JonS]

A standard length rod is just that, doesn't help or hurt the stroke. Only thing that would benefit that thing at this point is gearing and a full a/m exhaust for it.( which you're not allowed to run). Dunno what else to tell you, but maybe someone else can provide a better answer. I'm not sure.

 

[245stroker]

try to shave weight off of it. get rid of anything steel and replace it with aluminum.

 

[JonS]

try to shave weight off of it. get rid of anything steel and replace it with aluminum.

that's another great option i wasn't thinking about!

 

[dksix]

You say "skimmed head". That sounds like it's shaved and not re-chambered. If that's the case, having the head re-chambered will help.

 

[ruairiyblaster]

Whats does rechambered mean?

 

[Blaaster]

I race in the standard blaster class, no powerpipe allowed , im only allowed a 2mm overbore, a standard carb and standard crank.

Im never higher than fifth gear and there is alot of low gear corners in the track.

It has full port and polish, skimmed head, opened and gutted exhaust, advanced timing, metal removed from crank, 66mm wiseco piston, v force reeds, iridium plugs and premix on good 2stroke and run on race fuel.

Ive got a lightened flywheel, and a monster amr coil on the way.

Anyone know what will make this bike faster??

does a hotrods standard length crank make much of a difference?, might put one in even though im not aloud itt?

By this statement it is not so much speed you are looking for it is acceleration to launch you out out of the corners and give you more get up and go.

A reed spacer between the reed body and jug will bring the power on eairlier.

A change in gearing will give you much more power coming out of the corners.

My lad races a few small tight tracks and finds that a 12/40 sprocket combination works well, you could even go more teeth on the rear sprocket.

A little more power can be obtained by running a heavier oil premix ratio like 25:1 or even more, but you will have to run a larger main jet and plug chop to confirm.

The heavier oil concentration adds a little compression and seems best done with a Castor bean oil.

 

[ruairiyblaster]

Yes its more power out of the corners im looking, the highest gear i would be in in a corner is 3rd, ill order a reed spacer.
Im am running 25:1 with castrol oil with the larger jet and the plug is perfect colour.

People have told me the dt200 engine is geared differently than blaster and if i put my top end on a DT 200 bottom end if may work good, anyone tried this??

Thanks

 

[Blaaster]

Sprockets should give you the get up and go you are looking for.

 

[ruairiyblaster]

Thanks ill try the 12 and the 40 sprocket

 

[ruairiyblaster]

going to order a 15t front sprocket and keep the back 40 as its only 2weeks old

 

[blasterBruce]

You know you need to modify your case so the chain will not rub against it right ?

 

[bbshadow49]

even with a 14t sprocket i had to remove my clutch cover and cut the plastic with a hacksaw to get it to fit right, so it seems any thing bigger than stock requires work

 

[blasterBruce]

I did not have to modify anything with my 14 tooth

 

[bbshadow49]

really?

my blaster is a 2000 and i just experienced this today !!, i happened to be changing sprockets and i was expecting no problems!!

to my surprise i literally needed to cut some plastic off my clutch cover, i don't know if its a manufacturers defect or what, but it got sloppy and now my clutch cover looks ridiculous haha .....

 

[blasterBruce]

It happens ^ !.....

 

[blasterfreek30]

going to order a 15t front sprocket and keep the back 40 as its only 2weeks old

i think the 15t will hurt you on a short tight track...no point if your staying on or in 4th gear most of the time..id try the 12 on a tight track

 

[dksix]

Whats does rechambered mean?

The shape of the Blasters combustion isn't very good. Re-chambering is literately cutting a new combustion chamber into the head. A well shaped chamber directs the fresh charge, controls heat and produces a very efficient burn. The are several threads on Blaster head re-chambering. I would venture to say that being confined to a stock pipe, a well designed combustion chamber will yield greater power gains than porting. There is a very good thread on squish bands from SCD. Best, TripleCrown and AK47Joe has had some threads discussing size and shape. It's a very economical modification, as well. I think KOR list the cost as $60 on his sight. Do some searching here, I'm sure you'll find more and better information than I can give.

 

[ruairiyblaster]

The head is rechambered just checked with the boy who done it, the quad is basically tuned for off the line speed and out of the corners

 

[ruairiyblaster]

On the gearing calculator it says that 12 40 would slow the bike down in every gear?