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?
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...
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?
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.
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.
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.
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