Anvil*
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Age: 57
Location: San Jose, California
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« on: April 25, 2009, 12:00:31 AM » |
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Searching for specifications on DOHC 750cc heads for 3 & 4 cylinder engines (VFR, GSXR, ZX..). Valves, port sizes, flow numbers... On-line searches have been rather fruitless and no one currently porting motorcycle heads knows me well enough...
Since the first suggestion on a possible class to run was J/GL I've more than a few blanks to fill and much to learn.
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Stainless1
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Robert W. P. "Stainless" Steele Wichita, Kansas
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« Reply #1 on: April 25, 2009, 09:27:49 AM » |
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That technology improvement thing.... did you know the GSXR 1000 head fits the 750? Don't know about the latest models, but the 01-03 ones do. You might try Lazer Mike, http://www.lazerporting.com/services.htm He is friendly with LSR. |
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Stainless
MSA Lakester #1000 my fastest mile 245 and change, 84 ci turbobusa motor... but Corey's 233 MPH H/BFL record is still 3MPH faster than mine.
Builder of Bike 278 1000cc APS-G, Kids Red Hat Record 208.959 (old PS rules)
Other kids A-G record 179.172 Josh O record 182.266
Co-owner of the Amo Steele Streamliner, #1411... still sorting
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Larry Forstall
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« Reply #2 on: April 25, 2009, 10:32:21 AM » |
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The only current 750 is the Suzuki GSXR. It was updated as recently as last year. Any other engine choice would be old technology which would require tons of $$ to try to make it as good as a stock 2008 GSXR. Should be plenty available as young riders tend to bounce them down the road. For cylinder head porting www.enginedynamics.com in Petaluma in not far away. They have forgotten more than most will ever know. Hope this helps. Larry |
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« Last Edit: April 25, 2009, 10:38:46 AM by Larry Forstall »
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Anvil*
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« Reply #3 on: April 25, 2009, 10:25:22 PM » |
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Stainless1: I'll add the 1000 head to the mix, very good to know.
Larry/Stainless1:
Thank you both for the contact suggestions.
For land speed I don't see any engine as state of the art. The rods, cams, valves, valve springs, and pistons are wrong for peak horsepower over a limited time period. There are often cooling problems too (hot spots that can limit power).
All this is for a back of the napkin engineering study to find the engine most adaptable to a series of modifications. I'm just starting to open this can of worms to look inside. SCCA, AMA, and AFM put much stricter limits on engine modifications.
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Stainless1
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Robert W. P. "Stainless" Steele Wichita, Kansas
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« Reply #4 on: April 25, 2009, 11:25:43 PM » |
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Anvil, breathing is the most important quality, engines are just air pumps, you want the most effiecint pump to make the most HP per cube. All the other stuff can be dealt with.
Whatever you decide to do, have fun doing it, of course you want a record, but getting there is a large part of the fun.
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Stainless
MSA Lakester #1000 my fastest mile 245 and change, 84 ci turbobusa motor... but Corey's 233 MPH H/BFL record is still 3MPH faster than mine.
Builder of Bike 278 1000cc APS-G, Kids Red Hat Record 208.959 (old PS rules)
Other kids A-G record 179.172 Josh O record 182.266
Co-owner of the Amo Steele Streamliner, #1411... still sorting
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Anvil*
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Location: San Jose, California
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« Reply #5 on: April 26, 2009, 02:38:27 AM » |
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Having some fun already just starting to put the numbers together. By fall I hope to have three or four engines modeled and start pushing the RPM at peak horsepower up. 750cc should reach 200Hp  |
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octane
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The INDIAN "Saltcracker" 650 A-VBF
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« Reply #6 on: April 26, 2009, 09:37:32 AM » |
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....getting there is a large part of the fun.
Amen to that! |
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"A designer knows he has achieved perfection not when there is nothing left to add but when there is nothing left to take away" Antoine de Saint-Exupery |
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