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Author Topic: restrictor sizes for 09 not clear in SMC rules
amolaver Verified Driver Made Donation to Website
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Can someone please explain what exactly section 12.1 means from the 09 Spec Miata Challenge rules (http://www.nasaproracing.com/rules.html)

Not sure how to attach the jpg I grabbed of the problem, but if you go and look, you'll see a difference in wording vs number ('seven' vs '7') for the RP sizes.

A quote:

1994 - 1995 1800cc engine powered vehicles must use a forty seven (45.0) millimeter throttle
restrictor.
1996 - 1997 1800cc engine powered vehicles must use a forty five (45.0) millimeter throttle
restrictor.
1999 - 2005 1800cc engine powered vehicles must use a forty one (43.0) millimeter throttle
restrictor.

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ahm - http://www.awesom-oracing.com
2009 NASA MA SM Champion

Jason Holland Verified Driver Made Donation to Website
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Typo... I'll take care of it.
Jason

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Jason Holland
Semi-interested civilian

Joe Benton Verified Driver Made Donation to Website
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So Jason, does that mean a '99 goes from 41 to 43mm or is that another typo?

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Joe Benton
King Rat Motorsports
PBC Automotive

Jason Holland Verified Driver Made Donation to Website
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Yeah, another typo. It should be same as SCCA.

--------------------
Jason Holland
Semi-interested civilian

Jason Holland Verified Driver Made Donation to Website
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I just made the changes. Just waiting to get it on the website.

This is correct (or should be!)

12.1 Throttle Restrictor
1994 - 1995 1800cc engine powered vehicles must use a forty five(45.0) millimeter throttle restrictor.
1996 - 1997 1800cc engine powered vehicles must use a forty five (45.0) millimeter throttle restrictor.
1999 - 2000 1800cc engine powered vehicles must use a forty one (41.0) millimeter throttle restrictor.
2001 and up 1800cc engine powered vehicles must use a forty three (43.0) millimeter throttle restrictor.
The throttle restrictor shall be placed between the throttle body and plenum. All intake air shall pass through the restrictor plate. Restrictor plates must be the proper size as listed in the Specification Table, must be from Mazdaspeed Motorsports Development or SCCA Enterprises, and must not be modified.


Sorry for the confusion!

Jason

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Jason Holland
Semi-interested civilian

Drago Verified Driver Made Donation to Website Series Champ
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Jason
Here is a picture of the new plates. I believe these are legal in NASA as well correct? You can order these on Monday from SCCA Enterprises


 -

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Jim Drago
East Street Auto Salvage
jdrago1@aol.com
2006-2007 Mid-West Division
07,09 June Sprints Champion

EAST STREET RACING

Jason Holland Verified Driver Made Donation to Website
Mediocrity rules!

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typos should be fixed and yes these are legal for NASA.

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Jason Holland
Semi-interested civilian

SamBarnett Verified Driver
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Mine won't fit in the hole. Do you have any larger sizes? :-b

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Race Engineering - Championship Winning Engines
Carbotech Performance Brakes
CDOC

amolaver Verified Driver Made Donation to Website
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got my red beauty from the brown truck today [Smile]

--------------------
ahm - http://www.awesom-oracing.com
2009 NASA MA SM Champion

   

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