Are the timing marks on the e-shaft pulleys the same through all the generations of 13B/12As (REW excluded)? and are there any difference in the mounting hubs. I know that some have an offset bolt so it can only be installed one way. I cant remember what hub/pulley combination i am running and i just want to make sure my marks are correct.

Thanks
Allen

 

they are different. the first notch on 12-A pulley's are set at 0*.
read my write-up on how to find the TDC

https://www.rx7club.com/1st-gen-archive-71/ignition-main-pully-timing-525909/

 

That is great info wackyracer but i know where TDC is roughly. I just didn't know how to make sure that the pulley/hub/timing cover were all compatible. In other words if you installed a second gen pulley on a 12A hub with a GSL-SE front cover would 10 degrees indicated actually be 10 degrees?

Allen

 

I guess you didnt read it huh? of course it will be 10.

 

Read it three times and no where did it mention part compatibility or interchangeability. What i am doing is installing an aftermarket pulley set that does not have any timing marks on it. I have to transfer the marks from my pulley to the new pulley but i don't know if my marks are correct. The reason i ask is i was told by the place that i bought my ECM from that the notch in the hub for the key way is in a different position for each generation and you have to use the pulley that goes with that hub that goes with that timing cover. That didn't sound right to me and i guess the fact that no one knows what i am talking about tells me that it is not true.

Thanks
Allen

 

The key must be a 9oclock but the only way to see it to actually remove the front engine bolt. So the easiest way to find the TDC is MY WAY.

I DO KNOW WHAT YOUR TALKING ABOUT but since you already made up your mind, then feel free to SEARCHHHHHHHHHHHHHHHHHH.

 

OK what the hell i feel like arguing today. I couldn't care less about TDC and you obviously don't know what i am talking about. Let me ask this question one last time in as simple a manner as i can. If you lined up the mark at ten degrees on a 1st gen and and pulled the hub and pulley assembly off and slid a second gen pulley hub on would the marks still line up at ten degrees. If i were running the stock flywheel i would use your method to verify the marks but i am running a aftermarket flywheel so that does me no good (and no i cant see the counterweight). Oh and trust me i have SEARCHHHHHHHHHHHHED but all i came up with is the correct way it find TDC. All i want is someone to tell me YES all the marks on all the pulley hub combinations are the same.

Thanks for your time wackyracer.
Allen

 

If your pulley can mount in 4 different positions, it is a 1st setup. If the pulley only mounts in 1 position, 2nd gen. You cannot mix and match the 2 gens. 2nd gen pulleys have a small circle stamped between the bolt holes for alignment.

The 12A and 13B 1st gen pulleys are the same, except for the position of the timing marks.

 

Thank you!