Cadillac Porn!! A little something I'm working on!

Maybe the cam lobe is sitting to high and not allowing the rotor to seat all the way down?

 

I didnt see a pic of your rotor, but it should be very flat/thin

 

In the manual it has a rotor model number 4215C I have a 4215B????????????????????

HMMMM!!!

 

Inside my NOS Mallory here under the cap there is a factory warning decal "Caution use proper rotor -4215
Magneto-4215B
I think this is where the problem lies...

 

I guess i need the 4215C then.

 

It doesnt say anything about a "C" suffix though..I never tripped on this before. You learn something new everyday...

 

http://www.jalopyjournal.com/forum/showthread.php?t=351824&highlight=magspark
Check out CHRX pdf files he added named ZC-YC.pdf

It shows 4215C

 

The Magspark on my Buick nailhead has the 4215B Rotor...I just went out and checked on it..

 

what model magspark is in your buick?

 

Zcm

 

Thats why this isnt making any sense..Its the same exact distributor!

 

Ha! Now i'm really confused!

 

On this Chevy Mallory its a YC and takes a plain 4215.Check the rotor itself to make sure it wasnt misboxed, that happens alot..I worked a parts counter for over a decade..

 

The number on the rotor matches the box.

 

Uggghh!!

 

Do you think it has anything to do with the gear I drilled the distributor for?

 

Oh wow, I didnt know that..yes! the shaft is sticking up to high thats why its hitting..I said that earlier.That makes a bit of sense now..what did you do exactly?

 

I drilled the distributor for the gear. Once I noticed the rotor hitting I tried pulling on the gear to see if it would move down but it wont?

 

why did you mess with the gear? Oh was this an Early Cad Distributor into a later engine?

 

No the distributor never had a gear. It had to be drilled for one.

 

Early Cads didnt have gears on the distributors..The were slotted

 

My engine is a 59 390. Those distributors had gears. My 62 is the same way. It has a gear that is held onto the distributor shaft by a pin.

 

Ok, just making sure.

 

Something isnt jivin though.I still think the shaft is up too high causing the rotor to hit the cap.

 

yeah the gear has a slot on the bottom for the oil pump.

 

i will try again to lower the shaft hopefully without damaging it.

 

Man, I wish you werent 450 Miles South of me...

 

ha yeah i know.

 

thanks for all the help though!!!

 

No problem, anyone into Early Cads is cool with me..I think theres an old Tech post in the archives by me from my former Life as a HAMBer years ago.