I know not many here are into MC dragracing, but the mechanical-porn aspect alone is worth a look.

Suzuki had dominated the ProStockMotorcycle class for decades in NHRA competition, using the old GS 1100 as a base. The class became a stale and tired Suzuki-fest 'til NHRA politics permitted H-D a clean-sheet billet engine that now dominates (along with the billet S&S;/GBR "Buell").

Recent rules relaxation will see the above 'Busa-based (bore-centers, at least) engine in NHRA competition next year. It's a joint effort of Don Scumacher Racing, Suzuki and McLaren Engineering. Displacing 1625cc, it's an all-billet, 4-valve I-4.

More pics of this beauty here:
http://www.dragbike.com/dbnews/anmviewer.asp?a=4477&z=18

too bad it was rejected- transmission did not get approved

trippivot - 15 January 2009 07:43 PM

too bad it was rejected- transmission did not get approved

Just another example of NHRA politics. They also are allowing V&H;a 4-valve head for their "Harley" Twin, as they're at such a disadvantage now...

Fantastic looking motor. PSMs a great machines but these were more fun to watch.


By weslake at 2009-01-21

Nice pic of the double nitro Triumph, Anderson.

Another DSR pic, courtesy nitromater.com:



Man, those straight-shot fuel injectors take up some room!-
That header's a thing of beauty...

That's a potent looking motor. What are the displacement, power, torque and rpm specs on it?