Hi,

My boat is an 89 scarab 23' which has a mercruiser magnum 350 in it.

Last fall I began to diagnose a no start/no run issue but ran out of time.

I am pretty sure the issue is the ignition module at this point and may want to pickup a used one from Ebay

I need the TB IV V8-22 module and my question is do the numbers stamped into the part before the "V8-22" matter?

My module reads 8J02A V8-22

I recently saw one for sale that read 3M16A V8-22

what does the first set of numbers mean?

Is it just the 22 degrees that is the concern?


Thanks for the help

Jason

I can't tell you what the numbers in preceding V8-22 mean, but the TBIV book shows all V8-22 modules as having the same curve.

Thanks. Hopefully it is safe to assume that it would be usable with it having the same curve...

Any upgrade options or best to just stick with oem ?

Around that time they switched from the bulkyier "black box" module to the slimmer triangle style. Both have same mounting pattern. Could this be the reason for different part number?

Mine and this other used one look the same...both the newer triangular style.

the v8 22 means its for a ve and the 22 means the module has a total of 22* of advanve built into it..so take your initial timing of 10* and add 22* which give you 32* of total advance..

ok now replace the pick up in the distributor first before you buy a new module..those always fail compared to the module.

Ok thanks. I think I will start with the pick up as it is cheaper and it did look a bit rusty....
Thanks

If you send me your email address, I'll send you pdfs of the TB troubleshooting guide and the TB manual.
Check your grounds first.

Hello
I would appreciate a copy of the trouble shooting guide if you don't mind [email protected]
thanks
Ron

Sent 5 TB documents to you Ron.