Hayabusa 1500cc update

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OB_Mr Bear

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Tom, I tried to do a search on your previous posts to learn about your bike. I can't seem to make the search engine bring up your other 18 posts. Is your Busa a 99? Are you going to put it on the strip?

It sounds like a serious machine. Sorry to make you repeat yourself. I'm just curious what you plan to do with it, use-wise.
 
Mr Bear,
Bike is indeed a 99. Copper and silver. Motor went bang with less than 1000 miles. Looked at the cost of using completely stock parts vs going the aftermarket route and extracting a bit more power. Decided on the latter. Intended use is strictly street. Likely make some drag strip passes, but it is a street bike first. Performance expectations are simple. More power everywhere in the rpm band.
 
Cool. Mine is a copper one too, I got it 2 weeks ago and have 700 miles on it now. How did yours go bang? Was it the cam chain thing? How were you riding when it blew? I'm asking because I haven't got mine in for the recall yet. I figured I'd have it done at the break-in service, but I'm paranoid about it. Mostly I've been going pretty easy. I think I better get it done. Thanks.
 
Tom, there is a lot of info that you and I could trade...but for now maybe you could answer this...

What are you planning to do for a head gasket?

The head gasket on My 1430 motor didn't hold up.

Maybe there is something available now for that motor setup?
 
Mr Bear,
If it were me, I would get the new adjuster ASAP. You are taking a chance.

Frank,
I have the 85mm Cometic gasket. Where did your gasket let go? Was it between the cylinders? If it was, theres an old trick that you can use to make the gasket stick better to the head and block. E-mail me and Ill fill you in.
 
Frank,
Does anyone make a copper head gasket for this motor yet? I used a copper gasket with o-ringed cylinders for old turbo KZ with very good luck. Never lost a gasket and was running lots of boost. Just a thought. Jack
 
Tom, My gasket blew between #1 & 2 cylinder and ended up burning a hole through the block.
I will e-mail you soon!

Jack, since I decided to do the 1360 motor there is not much of a head gasket problem since the way to go is bore out the stock gasket on that application. There was nobody out there doing any 3 0r 4mm over gaskets when I was needing one.

Check this out!.....

When Turbo1300 picked his 1390 Busa up from superbike mike, he built his motor and there was NO base gasket, NO head gasket!

If thats not B-S!
 
Jack,
If the gasket Im using has trouble sealing I am going to try O-ring/copper. Theres a company in Phoenix that will make copper gaskets to any spec you want.

Frank,
No base or cylinder gaskets? Gee, Ive never tried that before. Let me guess. Its puking oil all over itself. Im suprised the piston didnt kiss the head. Ill wait for your E-mail.
 
If cometic makes a sprung steel for that bore use it. Had one on a 1216 GSXR with 150hp of NOS. Never a problem and reused it several times. No o-ring also.
 
copper on a water pumper? never heard of that...Toyota has a sealant for aluminum heads that will seal anything. The company in Arizona is accutronix(copper gaskets unlimited). On old kaw funny bikes never used a head gasket...sleeve was machined with lip to go up into machined groove in head with copper on end of sleeved part for seal....it worked...heads always split at plugs...4 stage nitrous is he*%.
 
Thanks, Tom. My next trip on it will be to the dealership for that service. It's raining here now anyway, so I'm mostly truck-bound. And if I really gotta ride, the GS1100 is up and running again. What a difference, old & new!
 
Just an update on my progress. The crank is back from Falicon (+3mm). The +4mm piston kit is here (likely set it up for 13:1cr). Late last week the Carillos came from Yoshimura (just a note - the carillos are 50 grams lighter each). We have ordered a bearing kit for bottom end mock up. The cylinders are out for boring and re-plating, adjustable cam sprockets and manual cam chain adjuster are here. The fuel pressure regulator has been modified for 5 pounds more pressure and Im starting to think about what to do in regards to larger throttle bodies. The head goes on the bench this week (just a flow test with the new stock size stainless valves at 10mm lift). Will decide whether or not to go after more airflow once I see how much air it moves as is. Looking at the 483/536 Web cams for this motor but havent decided yet. Waiting for the testing to be completed on the new APE valvesprings and ti retainers. Also considering using an aftermarket pipe. Would like some input on a few items.

1. - Anyone using the 483/536 Web cams on a street bike? Comments. Suggestions for a better choice.

2. - Throttle bodies. Should I bore my stockers 2mm or is there a larger bolt on I can use.

3. - I would prefer a pipe with the 4-2-1-2 configuration (ti if possible). I have read that several of these are available from Japan. How do I find out about these pieces?

All input is appreciated (tmcqueen@inficad.com). I hope to be making dyno pulls in early April and will post the results.

[This message has been edited by Tom McQueen (edited 20 February 2000).]
 
We (Cometic Gasket) have an entire line of gaskets for the Busa. In spring steel we have 81mm, 83mm, 84mm and 85mm bore and the same size in copper. We can modify the gaskets in just about any way. We can supply spring steel gaskets from .025" to .083" and we have 11 different thicknesses of dead soft copper ranging from .005" to .094". We carry 16 different thicknesses of alum. for base shims or stroker plates ranging from .010" to .625". And we also have complete engine case rebuild kits that the material or thickness can be changed to meet your needs. So to even consider going anywhere else for a gasket really is not an option. I work in engineering and you can call me anytime to see whats available or what can be modified.

Paul
Cometic Gasket
1-800-752-9850
 
Holding pattern right now. The mock up is complete (bearings). Cylinders still not back from boring/plating. Headwork pretty much complete (considering big exhaust valves in an attempt to get a better ratio). I am waiting for the springs and ti retainers to become available from APE so the head can be assembled. Only other thing is the 48mm throttle bodies. If they are available I will use them, otherwise its the stockers. You got any dyno numbers you care to share?
 
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