Tool man
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posted November 19, 2006 02:09 PM
NHRA Rule changes
Pro stock NHRA have changed the rules.
Billet four clyinder head now allowed.
"All heads must be NHRA accepted. Head may be an OEM production casting or a casting or machined billet part based on the production design."
No more 20 year old designs and should stop the unfair "Harley" advantage
NHRA 2007 Pro Stock Motorcycle Rule Changes
Saturday, November 18, 2006 NHRA Technical Services
Following is a summary of new rules for a 101 cid, 4 valve, 4 cylinder engine combination in Pro Stock Motorcycle. All engines must be 2000 model year or newer, and NHRA accepted. All existing 4 valve engine combinations (i.e., 1994 and newer at 87.2 cid and older 4 valve engines at 79 cid) in the NHRA Rulebook are deleted.
These changes are effective January 1, 2007.
ENGINE
Maximum displacement 1,655 cc (101.0 cid)
Maximum bore spacing 100.0 mm (3.937 inches)
4 valves per cylinder
1 spark plug per cylinder on all 4 valve applications
Turbocharger, supercharger and/or nitrous oxide prohibited (same as all engines in PSM)
CASE
All cases must be NHRA accepted. Case must be an OEM production casting, or a casting or machined billet part based on the production design. Only those cases submitted by the OEM manufacturer will be considered for acceptance. Modification to any accepted case are prohibited except for repair purposes. Case must be identified with manufacturer's [art/casting number.
CYLINDER BLOCK
If cylinder block is separate from engine case, then either the OEM production block or an NHRA accepted cylinder block is permitted. Block must be cast or machined billet. Only those cylinder blocks submitted by the OEM manufacturer will be considered for acceptance. If cylinder block is integral to engine case, modifications are only permitted in the bore area; i.e. to enlarge bore(s) or move bore spacing. All cylinder blocks must be identified with a manufacturer's name.
CYLINDER HEAD
All heads must be NHRA accepted. Head may be an OEM production casting or a casting or machined billet part based on the production design. Only those heads submitted by the OEM manufacturer will be considered for acceptance. Chambers may be modified to accommodate bore spacing of block. Head must be identified with a manufacturer's part/casting number.
CAMSHAFT(S) / VALVE TRAIN
OEM valve angles +/- 2 degrees mandatory. As with all engines in PSM, variable cam timing devices and/or gear drives are prohibited. Cam(s) must be driven by chain or belt only. Production, cam drive location mandatory. Only conventional coil spring type valve train permitted; pneumatic or other type valve trains prohibited.
CRANKSHAFT
One-piece, steel crankshaft with conventional journal bearings mandatory.
MATERIALS
Unless otherwise noted, all moving engine components are restricted to aluminum, steel, iron, titanium, or other conventional alloys. Magnesium, carbon fiber, Kevlar, ceramics, composites, beryllium or other exotic materials prohibited.
TRANSMISSION
Any transmission with a maximum of 6 forward speeds, minimum 4 forward speeds, permitted. Transmission case must be integral with cast or machined billet engine case.
WEIGHT
Minimum weight, bike plus rider, 615 lbs.
All other Pro Stock Motorcycle class rules and regulations apply.
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Bently
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posted November 19, 2006 03:36 PM
Should make next year interesting, Bet Harley and Buell are not happy.
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Tool man
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posted November 19, 2006 04:37 PM
Probably not, this should allow the Zx14 and the Gsxr 1300 to be used as platforms. Maybe a little more factory involvement ??
Here is a few pic's from Pamona last week
The wfe (Girlee) with newly crowned champ
A few new friends
Hook'en up
Cars
Some car driver(can't remember name) :P
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MadMike
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posted November 19, 2006 05:29 PM
Ahhh... that is why Ryan Schnitz bike is for sale...
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Bently
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2012 14r In Blue and no Mods!
Posts: 5428
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posted November 19, 2006 06:25 PM
Lets hope that is why his bike is for sale, maybe on a 14 prostock bike next year. Now that would rock. I always kinda felt let down when muzzys switched to the buell, they had been kawasaki for so long, but there was no way they could have been competive with a kawasaki under the old rules. Hell look how long it took the suzukis to start running up towards the front.
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Nelson Taylor
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posted November 19, 2006 06:53 PM
 Edited By: Nelson Taylor on 19 Nov 2006 19:33
Those are nice pictures.
Looking forward to next year in Pro Stock
Hopefully teams will have enough to get ready.
Wonder if the ZX14 body work has been approved or does someone even have a full body Pro Stock mold yet?
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MadMike
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posted November 19, 2006 07:41 PM
Muzzys will make their own, if they need it... they did with the 12...
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NOX
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posted November 19, 2006 08:11 PM
There is a lot of politics behind the bodywork approval in NHRA..........., look for it to be someone who already is approved........., you dont just slap on bodywork and enter a bike in PSM.
The 14 is impressive, finally saw one with someone who knows how to ride today, it was moving.........
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BrooklynNYZX12
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posted November 19, 2006 08:42 PM
If I am understanding the rule changes correctly it seems the door is open for Kaw to cast an aftermarket block and cylinder head as long as it has a Kaw part #.Is Kawasaki going to back a serious drag racing effort finally??
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NOX
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posted November 20, 2006 03:41 PM
Doubt it......
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MadMike
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posted November 20, 2006 06:06 PM
quote:
There is a lot of politics behind the bodywork approval in NHRA..........., look for it to be someone who already is approved........., you dont just slap on bodywork and enter a bike in PSM.
The 14 is impressive, finally saw one with someone who knows how to ride today, it was moving.........
they did it before with the 12, dont see any reason they could not do it again with the 14...
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Halvefast
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posted November 23, 2006 06:59 AM
Edited By: Halvefast on 23 Nov 2006 07:00
Basically, it is a clean sheet of paper. They have to follow the basic design of the OE but can move bore centers.
Billet heads with +/- 2 degree valve angles. Muzzy is already talking 96mm bore, in the ZX14!
Who ever builds it just needs the OE's to put a part # to it so it is publicly available.
Probably most parts won't fit our bikes at all, but now all the Mfgrs can compete.
Imagine Honda & Yamaha back in the fight of PSB with Kaw, Suz, HD and Buell!
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BrooklynNYZX12
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posted November 23, 2006 10:30 AM
What I was trying to convey in my previous post was,just as Harley has been allowed to use an engine that is just a V Rod engine in name.(it's a 2600cc complete CNC specialized piece)Kawasaki and the other manufacturers will be able to field engines that are not stock type castings!They will be specialized pieces that will be available to teams that want to go racing in PSM.As long as they have manufacturers part #'s they can use them.Eddie Krawieck is the track manager at E Town and he said that Kaw and Suzuki will both be involved at the factory level in NHRA PSM.It will be great to see a Kawasaki back in pro stock.
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NOX
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posted November 24, 2006 03:55 PM
I dont like that, I think the Harleys should have to use a block more like the zukes and kaws, instead of the other way around.....
Then all the talk of a fast 14 will mean nothing.....
because it wont be based from a stock type of casting like the current ones are........
If I am reading what you are saying right...........
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2010 TMRC Super Street Points Champion
2010 PMRA Super Street #3 Points
2009 PMRA Super Street Points Runner-Up
6 Time Centerville Dragway Points Champion
Sponsored by:
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Galfer Braking
AMSOIL
Steve's Speed Shop
Kawasaki Sports Center
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TRNorBRN6001
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posted December 01, 2006 03:17 PM
Carbs or fuel injected?????????
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Tool man
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posted December 01, 2006 05:33 PM
Yano....I asked that very question to Joe Koenig sponser of the Trim Tex bike. He said the Lectron's work just fine for drag racing, Muzzy has tried FI and found no benefit yet.
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TRNorBRN6001
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posted December 02, 2006 08:09 AM
I would think FI would have better tuning characteristics.
Heard Suzuki might be stepping up with a specialty run of some real fat blocks and cases for NHRA. Got that Scoop from the guy who does a little side work on my bike.
It might be worth it to start going to Houston and Dallas and seeing a few more bikes in the field.
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MadMike
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posted December 02, 2006 12:54 PM
That would be FUN!!!
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TRNorBRN6001
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posted December 05, 2006 06:57 AM
Heard Falicon came out with a 5mm stroker for the ZX-14, but that still leaves Kawi a little short on the CC's.
I do not follow NHRA bike stuff too much so keep us up-to-date!
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