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TECHNICAL BULLETIN--Pre-Approved Dyno Re-classing 3-24-16


Greg G.

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  • National Staff

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 TT Director. The driver should print out the page, and submit it along with the certified Dyno report and the TT Car Classification Form to the regional TT Director.

 

 

 

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 TT 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 TT 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 TT 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 TT Rules, Appendix C

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  • 3 weeks later...
So these classes just lost seven points by being Dyno- Reclassed ??

 

Did I read that right ??

 

No, you did not read that right. These are additions to the existing pre-approved classes. The non-* preapproved reclasses are still in the rules, clear as day. You can have 125whp/2300lbs PTE, or 125/2205 PTE*.

 

My assumption is that Greg gets so many requests for PTE* reclasses that he decided to simply publish a few of them to save himself some time.

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  • National Staff

Actually, we added them to make things easier for the crossover SM's that have done the floor modification below:

TECHNICAL BULLETIN 1-29-16

Mazda Miata Driver Seat Floor Pan

 

Appendix A—Technical Bulletins for Specific Models/Items

 

Mazda Miata ('90-'05)--TTB-TTF only:

The driver’s side floor pan may be modified to accommodate larger/taller drivers. All modification shall be contained between the transmission tunnel, driver’s side rocker, rear bulkhead and no more than 24” forward of rear bulkhead. The modification shall not extend below the factory floor stiffener/frame rail. The steel used in the modification shall be no thinner than .060”. All modifications shall be welded in place. This modification shall serve no other purpose other than seating position.

The assessment for having this modification will be an additional 100 lbs of weight added to the vehicle's base weight (or 100 lbs added to a Dyno Re-class if the vehicle is using a Dyno Re-class instead of the base classing table).

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