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PostPosted: Thu Mar 24, 2016 1:18 am 
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TECHNICAL BULLETIN 3-24-16
(Spec) Miata Pre-Approved Dyno Re-classing in Appendix C

The following are additions to the list of pre-approved Dyno Re-classes in Appendix C




Appendix C—Pre-Approved Dyno Re-classing
The following pre-approved Official Dyno Re-classes may be used without e-mailing the National PT Director. The driver should print out the page, and submit it along with the certified Dyno report and the PT Car Classification Form to the regional PT Leader.




Mazda Miata ’90-’93 (1.6L), no motor swap, non-BTM head, or F/I:

Your '90-‘93 Mazda Miata 1.6L with a maximum 125 rwhp on a Dynojet, and a Minimum Competition Weight (w/driver) of 2205 lbs, will have a new PT/TT base class of PTE*/TTE* (seven points). Your new base tire size is 235mm. You will not assess modification points for Section B. Weight Reduction or Section C. Engine Mods. However, all other modifications, including transmission and LSD, that are not standard items on a base trim '90-‘93 Mazda Miata must be assessed points, with the following exception. Only +1 point will be assessed, instead of +3 points under section 5.3.F.4 for the use of a 1997 Miata sub-frame brace, IF the vehicle is also being assessed for size 205 tires, +3 for a Mazdaspeed front chin spoiler, +2 for bump steer/shimming due to the use of Miata “R” model tire rod ends, and +2 for the use of Mazdaspeed sway bars. You must be compliant with the above listed maximum Dynojet HP and Minimum Competition Weight during any tech. inspection.

This option may only be used with a PTE/TTE or higher Final Competition Class.

Please keep a copy of this e-mail and the most recent Dynojet sheets and Dyno Certification Form with the vehicle log book as proof of re-classing. Also, turn in a copy of this e-mail, the Dynojet sheets, and the Dyno Certification Form with your PT/TT Car Classification Form to your Regional PT/TT Director.

Note that the car will still need to be compliant with the Minimum Adjusted Wt/Hp Ratio for whichever Competition Class you choose to run in.

This is an Official, approved, Dyno Re-Class copied from the current PT Rules, Appendix C




Mazda Miata ’94-’97 (1.8L), no motor swap, non-BTM head, or F/I:

Your '94-‘97 Mazda Miata 1.8L with a maximum 127 rwhp on a Dynojet, and a Minimum Competition Weight (w/driver) of 2265 lbs, will have a new PT/TT base class of PTE*/TTE* (seven points). Your new base tire size is 235mm. You will not assess modification points for Section B. Weight Reduction or Section C. Engine Mods. However, all other modifications, including transmission and LSD, that are not standard items on a base trim '94-‘97 Mazda Miata must be assessed points. You must be compliant with the above listed maximum Dynojet HP and Minimum Competition Weight during any tech. inspection.

This option may only be used with a PTE/TTE or higher Final Competition Class.

Please keep a copy of this e-mail and the most recent Dynojet sheets and Dyno Certification Form with the vehicle log book as proof of re-classing. Also, turn in a copy of this e-mail, the Dynojet sheets, and the Dyno Certification Form with your PT/TT Car Classification Form to your Regional PT/TT Director.

Note that the car will still need to be compliant with the Minimum Adjusted Wt/Hp Ratio for whichever Competition Class you choose to run in.

This is an Official, approved, Dyno Re-Class copied from the current PT Rules, Appendix C




Mazda Miata ’99-’00 (1.8L), no motor swap, non-BTM head, or F/I:

Your '99-‘00 Mazda Miata 1.8L with a maximum 129 rwhp on a Dynojet, and a Minimum Competition Weight (w/driver) of 2305 lbs, will have a new PT/TT base class of PTE*/TTE* (seven points). Your new base tire size is 235mm. You will not assess modification points for Section B. Weight Reduction or Section C. Engine Mods. However, all other modifications, including transmission and LSD, that are not standard items on a base trim '99-‘00 Mazda Miata must be assessed points. You must be compliant with the above listed maximum Dynojet HP and Minimum Competition Weight during any tech. inspection.

This option may only be used with a PTE/TTE or higher Final Competition Class.

Please keep a copy of this e-mail and the most recent Dynojet sheets and Dyno Certification Form with the vehicle log book as proof of re-classing. Also, turn in a copy of this e-mail, the Dynojet sheets, and the Dyno Certification Form with your PT/TT Car Classification Form to your Regional PT/TT Director.

Note that the car will still need to be compliant with the Minimum Adjusted Wt/Hp Ratio for whichever Competition Class you choose to run in.

This is an Official, approved, Dyno Re-Class copied from the current PT Rules, Appendix C




Mazda Miata ’01-’05 (1.8L), no motor swap, non-BTM head, or F/I:

Your '01-‘05 Mazda Miata 1.8L with a maximum 130 rwhp on a Dynojet, and a Minimum Competition Weight (w/driver) of 2335 lbs, will have a new PT/TT base class of PTE*/TTE* (seven points). Your new base tire size is 235mm. You will not assess modification points for Section B. Weight Reduction or Section C. Engine Mods. However, all other modifications, including transmission and LSD, that are not standard items on a base trim '01-‘05 Mazda Miata must be assessed points. You must be compliant with the above listed maximum Dynojet HP and Minimum Competition Weight during any tech. inspection.

This option may only be used with a PTE/TTE or higher Final Competition Class.

Please keep a copy of this e-mail and the most recent Dynojet sheets and Dyno Certification Form with the vehicle log book as proof of re-classing. Also, turn in a copy of this e-mail, the Dynojet sheets, and the Dyno Certification Form with your PT/TT Car Classification Form to your Regional PT/TT Director.

Note that the car will still need to be compliant with the Minimum Adjusted Wt/Hp Ratio for whichever Competition Class you choose to run in.

This is an Official, approved, Dyno Re-Class copied from the current PT Rules, Appendix C

_________________
Greg Greenbaum
National TT, PT, & ST Director
Nat. Medical Director
greg@nasa-tt.com


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