 sti or busa? |
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| dian |
 Sep 15 2012, 12:47 PM
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#1
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Member  Group: Members Posts: 57 Joined: 21-September 11 From: switzerland Member No.: 13,583 Region Association: None  |
i have just bought a subaru wrx sti half cut. its even not delivered yet, but i am having second thoughts. i just dawned on me , that with a hayabusa turbo engine i would have a sequential gearbox and 100 more hp. maybe 25 gears, if keeping the 901? of course at much more $, as id have to build the engine.
any thoughts? |
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| brp986s |
Sep 15 2012, 01:06 PM
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#2
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Member Group: Members Posts: 434 Joined: 27-September 07 From: los angeles Member No.: 8,167 |
Can a busa lug around a 2k lb car vs a 500 lb bike w/o shearing the crank? Do you really want to cruising around at 12k rpm?
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| matthepcat |
Sep 15 2012, 02:29 PM
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#3
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Meat Popsicle Group: Members Posts: 1,462 Joined: 13-December 09 From: Saratoga CA Member No.: 11,125 Region Association: Northern California |
Stick with what you have. Much higher HP potential with a turbo swap and tune.
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| Mike Bellis |
Sep 15 2012, 02:48 PM
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#4
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Resident Electrician Group: Members Posts: 8,345 Joined: 22-June 09 From: Midlothian TX Member No.: 10,496 Region Association: None 
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The Hayabusa engine does not have enough torque to move the 2000 lb car efficiently. The STI motor will work much better.
Torque make you get moving fast not HP. |
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| ottox914 |
Sep 15 2012, 03:37 PM
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#5
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The glory that once was. Group: Members Posts: 1,302 Joined: 15-December 03 From: Mahtomedi, MN Member No.: 1,438 Region Association: Upper MidWest |
The gearbox on the bike will grenade. Search the inter web for miatabusa. These nutcases were adapting a 'busa motor into a miata and were making a plate to connect the 'busa w/out gearbox to the miata trans.
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| dian |
Sep 16 2012, 04:52 AM
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#6
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Member Group: Members Posts: 57 Joined: 21-September 11 From: switzerland Member No.: 13,583 Region Association: None |
i have come accross quite a few conversions, where they put a busa into a light car. if the trans doesnt crack at 400 hp on the bike, would it in a car?
anyway, it would be an expensive project. do any late subarus have a sequential trans? |
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| ottox914 |
Sep 16 2012, 06:57 AM
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#7
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The glory that once was. Group: Members Posts: 1,302 Joined: 15-December 03 From: Mahtomedi, MN Member No.: 1,438 Region Association: Upper MidWest |
Miatabusa: http://www.motoiq.com/magazine_articles/id...that-noise.aspx
I want them to make this work so I can attach that motor to my 901. |
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| monkeyboy |
Sep 16 2012, 08:26 AM
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#8
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Senior Member Group: Members Posts: 808 Joined: 8-June 08 From: Los Angeles, Ca Member No.: 9,147 Region Association: None |
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| Mike Bellis |
Sep 16 2012, 01:41 PM
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#9
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Resident Electrician Group: Members Posts: 8,345 Joined: 22-June 09 From: Midlothian TX Member No.: 10,496 Region Association: None
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QUOTE(monkeyboy @ Sep 16 2012, 07:26 AM)  I agree! (IMG:style_emoticons/default/agree.gif) But at $28k, most of us cannot afford it... (IMG:style_emoticons/default/sad.gif)  |
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| Tom |
Sep 16 2012, 04:08 PM
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#10
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Advanced Member Group: Members Posts: 2,139 Joined: 21-August 05 From: Port Orchard, WA 98367 Member No.: 4,626 Region Association: None |
At 400 hp on a bike, the rear wheel is breaking loose. Add 1500 pounds and another larger wheel and the torque will break the weakest link - the trans.
Age old dragster issue, fix one thing so it stands up to the increased torque and HP and the next weakest link shows it's ugly face! Fix that and then the next weakest link will be found. Tom |
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