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LordNikon · 02-18-2008, 10:31 PM

Allright so this idea may piss a few people off but I don't care. I've been doing my research and it seems this will actualy be quite easy. Hayabusa 1300cc to replace my 4age, and I'll prob use the JEFFco reverse differential JEFFco Reverse Differential. I have talked to several people that build sandrails and they seem to think I should have no problem makeing this work. And prob. quite well. One of the builders has even been thinking about makeing a street car with the "Busa" himself.

So here are some figures...the 1300 is putting out 175bhp at the crank and most dyno runs I've come across are putting down around 140whp and between 99 and 105 ft/lbs. so when it comes down to it that would be an automatic increase from the 4age at low 90's whp and about the same ft/lbs. Of course you also have to figure the 4age weighs somewhere in the 700lb range plus another (I'm guessing at this point) so 200 lbs for the transaxle. Now the 1300cc busa is say half the weight of the fully assembled bike (bike=473lbs) so engine would be say 236.5 lbs. This is prob over the real weight. Now the new JEFFco diff if I remember correctly 73lbs. So well say 235+75=310lbs total and the 4A+C52= guessing 900lbs...so well lowball it and say the 4A+C52 as little as 700 lbs. 700-310=390 So I'll drop about 400lbs off the car.
Hmmm...since I've already dropped down to around 2000lbs this additional 400 loss will leave me around 1600lbs. Just a tad bit more than your average sand rail. now of course I haven't accounted for the loss of the stock coolent system, or any number of other random parts that will no longer be needed.

So now all I need to do is sell my International Scout II to get at least some of the cash up for this project.

So now you all can rant and rave about how this is such a stupid idea and how Toyota designed the car the way it is for a reason, and that I'll totaly screw up the handleing by dropping so much weight, etc, etc, etc...

Then I'll laugh my @$$ off when I put it on the track and smoke some people.

02-18-2008, 10:31 PM	#1 (permalink)
LordNikon ProjectMadMR2 Join Date: Nov 2007 Location: Ft. Hood TX Posts: 148 Thanks: 1 Thanked 4 Times in 4 Posts iTrader Rating: (0/0% )	"Toybusa" Allright so this idea may piss a few people off but I don't care. I've been doing my research and it seems this will actualy be quite easy. Hayabusa 1300cc to replace my 4age, and I'll prob use the JEFFco reverse differential JEFFco Reverse Differential. I have talked to several people that build sandrails and they seem to think I should have no problem makeing this work. And prob. quite well. One of the builders has even been thinking about makeing a street car with the "Busa" himself. So here are some figures...the 1300 is putting out 175bhp at the crank and most dyno runs I've come across are putting down around 140whp and between 99 and 105 ft/lbs. so when it comes down to it that would be an automatic increase from the 4age at low 90's whp and about the same ft/lbs. Of course you also have to figure the 4age weighs somewhere in the 700lb range plus another (I'm guessing at this point) so 200 lbs for the transaxle. Now the 1300cc busa is say half the weight of the fully assembled bike (bike=473lbs) so engine would be say 236.5 lbs. This is prob over the real weight. Now the new JEFFco diff if I remember correctly 73lbs. So well say 235+75=310lbs total and the 4A+C52= guessing 900lbs...so well lowball it and say the 4A+C52 as little as 700 lbs. 700-310=390 So I'll drop about 400lbs off the car. Hmmm...since I've already dropped down to around 2000lbs this additional 400 loss will leave me around 1600lbs. Just a tad bit more than your average sand rail. now of course I haven't accounted for the loss of the stock coolent system, or any number of other random parts that will no longer be needed. So now all I need to do is sell my International Scout II to get at least some of the cash up for this project. So now you all can rant and rave about how this is such a stupid idea and how Toyota designed the car the way it is for a reason, and that I'll totaly screw up the handleing by dropping so much weight, etc, etc, etc... Then I'll laugh my @$$ off when I put it on the track and smoke some people.