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Old 06-15-2003, 07:21 PM   #1
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Default Illegal crankshafts

I have heard a rumor that the turbo scoop is not allowed to extend into the end of the crankshaft. Does this mean that all of the JP's, RTU's, stock Sirios and all of the other mod motors are going to be illegal at the nationals?
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Old 06-15-2003, 07:50 PM   #2
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Are you referring to ROAR? I think there was a discussion here but that was regarding the change in the EFRA rules concerning the crankshaft. Then again it makes for interesting reading.

That started the Rody 235 engine which is a "replacement" for the 215 engine. The only difference is the turbo scoop on the crankshaft.

BTW, would your engines be affected by this change of rule?
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Old 06-15-2003, 07:52 PM   #3
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Uriah,

I'm afraid so.

The rules state that the bore of the crankshaft has to be uniform all the way through, no beveling at the exit.

You might wanna ask dennis Ritchey though, I remember that he had long discussions with ROAR about this topic.
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Old 06-16-2003, 10:13 AM   #4
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Good question. I've been curious about this too after seeing some of the Smeltz Sirio cranks with the scoops that go way into the opening. Someone told me that it's legal as long as the diameter of the passage wasn't changed. Theoretically, the diameter wasn't changed. I don't know. I hope someone has a clear cut answer.
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Old 06-16-2003, 10:51 AM   #5
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Default crank bore

2003 Roar rules states no crank bore for .12 motors at all. The only crank rule applys to the .15 3 port motors for 2wd.
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Old 06-16-2003, 06:49 PM   #6
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So, basically all 3 ports with the right exhaust height are legal now?

That's awesome. If thejust allowed turbo plugs....
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Old 06-17-2003, 10:50 AM   #7
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Quote:
Originally posted by stefan
So, basically all 3 ports with the right exhaust height are legal now?

That's awesome. If thejust allowed turbo plugs....
That is the way I unstand it. Also for 2004 I heard from a high ranking Roar official that the only rules for sedan motors would be a carb size and exhaust stinger size thats it.
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Old 06-17-2003, 05:12 PM   #8
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So, Grinder, my crank is Legal?
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Old 06-17-2003, 05:16 PM   #9
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Quote:
Originally posted by YBSLOW
That is the way I unstand it. Also for 2004 I heard from a high ranking Roar official that the only rules for sedan motors would be a carb size and exhaust stinger size thats it.

Are we about to see 500.00 .12 modifieds now?
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Old 06-17-2003, 07:47 PM   #10
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Yes, that means all of my engines are legal.
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Old 06-17-2003, 08:15 PM   #11
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If Trinity keeps the distribution right for most major Italian brands, you might see $500 tags even w/o a rule change....
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Old 06-17-2003, 08:38 PM   #12
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Trinity Sux ! !
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Old 06-17-2003, 08:39 PM   #13
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That's good.

Grinder, or Stefan, Where should I get a new piston from?
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Old 06-17-2003, 09:52 PM   #14
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For???
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Old 06-17-2003, 11:58 PM   #15
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ROAR only has that rule for the .15 class with the cranks, but I think that at IFMAR/EFRA Worlds level races that they might have a rule on .12 cranks. Can someone that knows those rules correct me if I'm wrong? Also if anyone else knows what rules they have on cranks for racing in other continents as I'm not sure how the rules differ between the different governing blocks? Thanks!
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