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Author Topic: Fastest 1507 or 1552 you've ever seen.  (Read 10461 times)

Offline Fastass99

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Fastest 1507 or 1552 you've ever seen.
« on: August 18, 2019, 09:21:14 PM »
 What is the fastest 1507 or 1552 you've ever seen or heard of running in the 1/8th or 1/4 mile? Looking for info for street/strip busa.Any length street tire all motor it n mph. Thanks

Offline MJ Williams

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Have a Harley, spent lots of money on it, thought I had a fast motorcycle, bought a Busa, realized all I had was a fast Harley, not a fast motorcycle!

Offline Fastass99

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Re: Fastest 1507 or 1552 you've ever seen.
« Reply #2 on: September 02, 2019, 09:37:36 PM »
Anyone else out there that's had any experience with 1507 or a1552gen 1? Or know of someone that has? Thanks

Offline Fastass99

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Re: Fastest 1507 or 1552 you've ever seen.
« Reply #3 on: October 22, 2019, 11:07:50 PM »
Bump

Offline MICHAEL MATHEWS

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Re: Fastest 1507 or 1552 you've ever seen.
« Reply #4 on: November 01, 2019, 09:15:28 AM »
My bracket Hayabusa has a 4mm bore and a 5mm billet crank. It weighs 670lbs with me on it ,ready to race. Runs 8.20s at 164

Offline knecum

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Re: Fastest 1507 or 1552 you've ever seen.
« Reply #5 on: November 03, 2019, 12:08:41 PM »
I know of 1441s and 1470s  no stroke that been 790s-8.0s @170

Offline MICHAEL MATHEWS

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Re: Fastest 1507 or 1552 you've ever seen.
« Reply #6 on: November 03, 2019, 04:15:09 PM »
I wasnt trying to come across as bragging,I know there are a lot faster combos

Online ADMIN

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Re: Fastest 1507 or 1552 you've ever seen.
« Reply #7 on: November 04, 2019, 01:20:49 AM »
All good
Closed course. Professional rider. Do not attempt.

Still privately owned and operated by Hayabusa owner enthusiasts. 2002, small  a/a kit, CF body

If it's in a truck or trailer, it's being stolen

Offline speedduck

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Re: Fastest 1507 or 1552 you've ever seen.
« Reply #8 on: November 04, 2019, 02:41:18 PM »
I wasnt trying to come across as bragging,I know there are a lot faster combos

And i know few 400-500hp turbos that are slower than you   :tu:

Offline Fastass99

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Re: Fastest 1507 or 1552 you've ever seen.
« Reply #9 on: November 04, 2019, 07:39:18 PM »
knecum, were those 1441's n 1470's real high compression motors?

Offline Fastass99

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Re: Fastest 1507 or 1552 you've ever seen.
« Reply #10 on: December 02, 2019, 09:35:25 PM »
Bump

Offline SpazRacing

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Re: Fastest 1507 or 1552 you've ever seen.
« Reply #11 on: March 05, 2021, 08:52:39 AM »
I have 1440cc in street bike form. Going 8.0’s-820’s
150-180 riders hand clutch and hand slider.

Offline Fastass99

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Re: Fastest 1507 or 1552 you've ever seen.
« Reply #12 on: March 19, 2021, 10:20:55 PM »
Spaz, were you running 12:5:1, 13:1 or something higher? And was that a stock valve head?

Offline SpazRacing

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Re: Fastest 1507 or 1552 you've ever seen.
« Reply #13 on: March 20, 2021, 10:02:58 PM »
Flattops 13.2.1 stock valves.
.384” Int .350” exhaust
225-227hp on MR9  :wacky:

Offline soNso

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Re: Fastest 1507 or 1552 you've ever seen.
« Reply #14 on: April 08, 2021, 10:32:03 PM »
How much to do a motor like that?