busakiller
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So I would like to do some cheap upgrades to my stock motor bike. I was thinking dual intake cams, remove base gasket, thinner head gasket, head porting and head studs. Would drop in pistons really be worth the money?
Gen 1 engine build questions?
- Thread starter busakiller
- Start date
Hayabusa Wannabe
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Gen 1 busa motor build | All Motor
Hello, everyone, I recently picked up an 00 Gen 1 Hayabusa beside doing all maintenance I would like to build the motor. Please let me know what you guys think. I would like to drag racing the bike maybe run a small shot of nitrous. Race porting and competition valve job/ new valve seals/etc...
You and I have different views on "cheap"...My guess would be cams and gaskets. Check MPSRacing (tons of busa stuff) and Schnitz Racing.
busakiller
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This is my fun street bike. It gives a lot of bikes a run for there money around here in a roll race. But I think it needs a little more power. I don’t want to bore it out cause then I need to run 2 batteries or buy a big bad ass battery.
202mphbusa
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I have never been a huge fan of drop in kits
for only short money more , 1397's much better
and I can't think anyone would disagree there is a noticeable difference
for only short money more , 1397's much better
and I can't think anyone would disagree there is a noticeable difference
busakiller
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I have a 1397 in my drag bike. I love it but this is a street bike and I want to do this on the cheap. I already have nitrous on it and spraying a 75 shot on it right now. I plan on pulling the motor and doing head studs this winter. Figure if I’m there I could do some things to add power for cheap. I will probably gap the rings out more so I can spray it a little more.
New pistons would give you more piston to valve clearance and more compression. I figure I got about a tenth in the 1/4 when I moved from 12.5 to 13.5 on my 1441. I'm told you don't want to decrease piston to deck less than about a mm but not sure where the thin base gasket will put you. While you are in there, a Gen2 crank is only $600.
Kevin Jones
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Amazingly the price of piston kits has gone up substantially in the past 2 years. I cant get a set of gen 1 wisecos for under $500 anymore. I have a killer std bore recipe that was cost effective but it doesnt seem that way now. For a little bit more, send in a gen 1 block to APE and forget std bore. Without pistons, the compression on a gen 1 is in my opinion the limiting factor. Shaving the head, thinner head gasket, etc, seem all band aids for the pistons. I dont think doing cams or headwork to a gen 1 is cost effective until you get the compression up. Thats just my 2 cents. It is how I came up with that good street std bore budget build that isnt really budget anymore. Sucks. Like Dennis said, might as well sell your gen 1 crank and get a gen 2 while your in there.
Kevin Jones
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For that matter, what you can get a gen 2 complete bike for, might just wanna see if you can upgrade to a stock gen 2 bike.
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