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#1
Johnny D

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http://www.scca.com/...k-june-club.pdf

Just want to cover this if someone missed it.
NO ACTION REQUIRED2. #4676 (Larry Mendez) Steering Rack Shim question
Shimming of the steering rack is not permitted. The rule is correct as written.

CLUB RACING TECHNICAL BULLETIN
Spec Miata
1. #4488 (Kevin Foote) Bilstein part number change
In 9.1.8.C.4.a.1, after “B46-1488” add “ or 24-014885” and after “B46-1489”, add “or 24-014892”. [These changes reflect a
new Bilstein part numbering system; there is no change to the parts.]
2. #4617 (Jim Drago) Allow the Cusco limited slip
In 9.1.8.C.3.b, add the following: “Alternate MAZDASPEED #0000-02-5500 limited slip differential is permitted.” [The
previously specified differential is no longer available.]


Pretty fast "Alternate #" compared to the 99 front chin which is no longer available.
J~
2011 NASA Western Endurance Racing Championship E3 Champ
We have a Winnah! - Won their 1st race... Congratulations! Beta-Tester - Assisted us with beta testing the website. Donor - Made PayPal donation Bona fide - A bonafide Spec Miata driver Novel Approach - When a paragraph simply won't do... Survive the 25, NASA Thunderhill - Survive the 25, NASA Thunderhill Instigator - Made a topic or post that inspired other Make it Rain - Made Paypal donation of $100+

#2
Caveman-kwebb99

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http://www.scca.com/documents/Fastrack/11/11-fastrack-june-club.pdf

Just want to cover this if someone missed it.
NO ACTION REQUIRED2. #4676 (Larry Mendez) Steering Rack Shim question
Shimming of the steering rack is not permitted. The rule is correct as written.

CLUB RACING TECHNICAL BULLETIN
Spec Miata
1. #4488 (Kevin Foote) Bilstein part number change
In 9.1.8.C.4.a.1, after “B46-1488” add “ or 24-014885” and after “B46-1489”, add “or 24-014892”. [These changes reflect a
new Bilstein part numbering system; there is no change to the parts.]
2. #4617 (Jim Drago) Allow the Cusco limited slip
In 9.1.8.C.3.b, add the following: “Alternate MAZDASPEED #0000-02-5500 limited slip differential is permitted.” [The
previously specified differential is no longer available.]


Pretty fast "Alternate #" compared to the 99 front chin which is no longer available.
J~



Someone needs to start making the 99up Chin spoiler!!!!!!!

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#3
AJ Roderick

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Someone needs to start making the 99up Chin spoiler!!!!!!!

+1000
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#4
Jim Drago

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Pretty fast "Alternate #" compared to the 99 front chin which is no longer available.
J~


Diff is a necessity... The spoiler is so it doesn't look as much like a chick car :) Also, no one has sent in a letter requesting an alternate part? I don't think it would stand a chance, but we have not even gotten the letter.

Jim

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#5
Johnny D

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PM sent.
J~
2011 NASA Western Endurance Racing Championship E3 Champ
We have a Winnah! - Won their 1st race... Congratulations! Beta-Tester - Assisted us with beta testing the website. Donor - Made PayPal donation Bona fide - A bonafide Spec Miata driver Novel Approach - When a paragraph simply won't do... Survive the 25, NASA Thunderhill - Survive the 25, NASA Thunderhill Instigator - Made a topic or post that inspired other Make it Rain - Made Paypal donation of $100+

#6
pat slattery

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I was under the assumption that the steering rack was legal to shim it down. Did I miss something. I do not have it done to my car, but I thought I heard some on the forum doing it.
]
Pat



 

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#7
dstevens

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I was under the assumption that the steering rack was legal to shim it down. Did I miss something. I do not have it done to my car, but I thought I heard some on the forum doing it.
]
Pat


Legal in NASA.

#8
Motor City Hamilton

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Should we ask for this to be legal in SCCA too? Seems like an inexpensive way to allow people to fine tune? I tend to like rules changes that only cost me a bag of washers vs. complete subframes and suspension bits. Shimming the steering rack is all over the I.T. classes. Why not here?

#9
Bench Racer

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Should we ask for this to be legal in SCCA too? Seems like an inexpensive way to allow people to fine tune? I tend to like rules changes that only cost me a bag of washers vs. complete subframes and suspension bits. Shimming the steering rack is all over the I.T. classes. Why not here?


Before we jump all over this suposed bump steer correction (shimming the rack) & write letters for shimming the rack or something else relative to the bump steer how about someone post their before & after measurements that shows that shimming or something else improves the bump steer. I have not found time to do before measure, improve & after measure.

If someone NASA or SCCA has these numbers please post the before & after numbers.
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#10
pat slattery

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I would be nice from some NASA racers, there opinion on the move as to if there is any noticeable difference in handling, feel, etc.
Pat



 

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#11
Jim Drago

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Should we ask for this to be legal in SCCA too? Seems like an inexpensive way to allow people to fine tune? I tend to like rules changes that only cost me a bag of washers vs. complete subframes and suspension bits. Shimming the steering rack is all over the I.T. classes. Why not here?



Maybe the guys at SCCA don't think there is any way possible that a bag of washers alone will fix much of anything anything? :o Besides, didn't most of the 1.6 guys agree handling was not an issue in the 1.6 car? :huh:

All kidding aside, I did the math 2-3 years ago, I don't have it any longer, nor do I feel like doing it again, but I don't think a bag of washers alone is worth the time.


Jim

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#12
pat slattery

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Maybe the guys at SCCA don't think there is any way possible that a bag of washers alone will fix much of anything anything? :o Besides, didn't most of the 1.6 guys agree handling was not an issue in the 1.6 car? :huh:

All kidding aside, I did the math 2-3 years ago, I don't have it any longer, nor do I feel like doing it again, but I don't think a bag of washers alone is worth the time.


Jim


When it comes to handling with our 1.6, I think it handles pretty good, I would certainly rather have 2-3 more foot lbs of torqe than a small gain in handling.

Pat



 

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#13
Jim Drago

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When it comes to handling with our 1.6, I think it handles pretty good, I would certainly rather have 2-3 more foot lbs of torqe than a small gain in handling.

Pat



So would I, along with some more Hp and less weight and better tires :)
JIm

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