Jump to content

Photo

Parts Spotlight: Miata Timing Wheel

- - - - -

  • Please log in to reply
5 replies to this topic

#1
Johnny D

Johnny D

    Veteran Member

  • Moderators
  • 6,121 posts
  • Location:Fremont, CA
  • Region:San Francisco
  • Car Year:1999
  • Car Number:88

TimingWheel1-400x244.jpg

 

New part for Spec Miata and other Miata racer sees several improvements over old timing wheel

 

Part No.: 0000-10-5100
Racer Price: $90.00

 

Mazda Motorsports has a new stainless steel timing wheel approved for Spec Miata by both SCCA and NASA that offers several improvements over the previous version, not the least of which are bolt slots cut on the radius, laser-etched timing marks and removing its influence on the harmonic balancer.

 

“The new product is of much higher quality than the older one,” explains Josh Smith, Mazda Motorsports’ specialist for technical development. “We took a blank-sheet-of-paper approach and really looked at what needed improving. The new one is laser etched. The slotted adjustment holes are all radiused correctly around the center pivot point of the timing wheel, whereas the previous ones were cut diagonally. That was causing fatigue and pressure points on the hardware.”

 

One of the biggest benefits could be smoothing things out a little, which could lead to longer life of some components.

 

“We made it a bit thicker to handle harmonics and vibrations a little bit better at the sustained high revs Spec Miatas see. We took the approach to coin, or stamp, the piece just like the factory one so it offsets correctly to engage the crank angle sensor. In coining it and stepping it, it gets the offset off of the harmonic balancer so the harmonic balancer is actually able to work at its full potential. The flat one basically diminished the harmonic balancer’s ability to dampen engine vibrations because it took the center section and directly connected it to the outer section,” says Smith.

 

The laser etching allows accurate setup, and it has a notch that, when aligned with the notch on the OEM balancer, puts it at top dead center. From there, moving accurately through the 20 degrees of available adjustment should be fairly simple. The wheel has no powder coating to melt, which can cause the bolts to loosen or give false torque readings. The timing wheel comes with ARP bolts, and is also lighter than the previous version.

 

The new timing wheel is available now. Log onto the store or call (800) 435-2508 to order yours today.

 

https://www.mazdamot...a-timing-wheel/


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
Tom Sager

Tom Sager

    Veteran Member

  • Members
  • PipPipPipPipPip
  • 1,499 posts
  • Location:Chicago Suburbs
  • Region:Central
  • Car Year:2001
  • Car Number:94

Just what the doctor ordered for me.  Heard through grapevine that the final material may not be stainless steel?   Anything that reduces electrical failure on NB cars is worth the $. 


Donor - Made PayPal donation Bona fide - A bonafide Spec Miata driver We have a Winnah! - Won their 1st race... Congratulations! Make it Rain - Made Paypal donation of $100+

#3
Adax

Adax

    Member

  • Members
  • PipPipPip
  • 205 posts
  • Location:Atlanta
  • Region:ATL
  • Car Number:49

This happened to me not long ago, disappointing way to end a race. Great job Josh and Mazda. One on order.

 

 

 

C37Jdut.jpg


Alan Cross

My build blog

2017 SARRC SM Champion

2016 SARRC SM ECR Champion

Donor - Made PayPal donation Bona fide - A bonafide Spec Miata driver ARRC Champion - Won the ARRC Race in a Spec Miata We have a Winnah! - Won their 1st race... Congratulations! Bona fide - A bonafide Spec Miata driver

#4
luckymiata76

luckymiata76

    Member

  • Members
  • PipPipPip
  • 116 posts
  • Location:St. Joe, MI
  • Car Year:1999
  • Car Number:76

I had a stock one "explode" also. Looked like it was slotted by hand with a grinder and was probably pretty old. 

 

Jeff



#5
OrangeCrush86

OrangeCrush86

    Member

  • Members
  • PipPipPip
  • 396 posts
  • Location:BECKER
  • Region:Minnesota

I'm not a Miata expert yet. Is this only for NB cars?


____________________________

http://jenkinsracing.com


#6
Ron Alan

Ron Alan

    Veteran Member

  • Members
  • PipPipPipPipPip
  • 3,542 posts
  • Location:Northern CA
  • Car Year:1995

I'm not a Miata expert yet. Is this only for NB cars?

This is the trigger mechanism for the crank sensor...which I believe started on all OBD2 cars...96 and up


Ron

RAmotorsports

2014 NASA SM Western States Champion(Car owner)

2015 NASA 25HR E3 Champion(Car owner)

2016 NASA 25HR E3 Champion(Car owner)

2017 NASA 25HR E3 Champion(Car owner)

2018 NASA 25HR E3 Champion(Car owner)

2017 NASA NORCAL SM Series Leader

2018 NASA NORCAL SM Series Leader

Donor - Made PayPal donation Bona fide - A bonafide Spec Miata driver




0 user(s) are reading this topic

0 members, 0 guests, 0 anonymous users