Just wondering after what serial number did they go to the long nose crank? Havent gotten to tearing down the new engine yet but i got the # off it.. its 300328.. not scared of the shortnose just curious..

 

no one?

 

sorry ment to respond but got a little sidetracked
heres a good link to some info about it, and how to tell the difference. didnt see any vin related info though.
http://www.miata.net/garage/crankshaft.html

 

Not sure about serial numbers, but the easy way to tell is if your crank pulley has 8 slots or 4. If it has 4, you have a short nose crank.

 

Well after i removed the pulley i wouldve said i got another shortnose.. but according to the link and you guys i got a bignose cus its got 8 slots in the pulley... even the bignose looks pretty stubby....

 

Found it! I couldn't remember where I read this. Good info.

http://www.miata.net/garage/crankshaft.html

 

haha, you both listed the same link.

 

Damn, I'm on a roll these days.

 

Sorting through old engine codes and crank serial numbers can be tricky, especially with classic cars. I ran into this while rebuilding an older engine and realized that having clear documentation makes everything easier. Using a toyota monroney sticker from a donor car helped me see the original build details and understand which parts were correct. Comparing that information with the car saved a lot of guesswork and made the rebuild process much smoother.

 

I hope this was helpful.