Technical Harmonic damper ring slippage.

How about that free spinning reluctor ring inside of a Mopar distributor that you found yet the car still miraculously ran?! Crazy, man.

 

In all my years @ drags ,hot rods circle track , average low budget builds , many many years on starting line , I have only seen""" 1 "" ring come off that was 30 years a go 4 speed car , I seen slip rings , Wants I reveal that ring slip or not I establish true top dead center remake if incorrect , & tune timing from,& Monitor if it still slips , if so change out . on a engine seeing no more then 6,000 rpms ,.if ring has slip on a high reaving , change out to sfi
Why do so many Rely on timing mark
( oem) & tab , there not perfect only a reference point , tune to what the engine likes .

 

Yeah, that was crazy!

 

Had a 78 GMC with a crate replacement 350 in it, heard s****ing and found the outer ring cutting into the timing cover.

Also had a Mini Cooper that slipped at about 60K, timing was read off the ring and it went into limp mode. Seemed to be a common thing with that car.

 

i have seen this either slipped ring or completely separated a whopping 4 times in my life working on cars and stuff .

the first was on one of my cars with a FI Chevy 350 it separated completely.

the second was on a customer car , don’t remember but some mid 90’s gm FWD appliance.

and the last two in short order on forklifts with Chevy engines .

I don’t think it’s all that common , hence the “probably “ and “sometimes “ etc. slim evidence.

I’ve never looked for it, but run across it a scant few times .

although every SBC or 235 inline 6I’ve ever bought or sold has been a high nickel, 4 bolt main Corvette engine

 

Off topic, but if you have much experience with manual transmission Subaru's with the EJ25 engine you would be familiar with damper rings slipping on the hubs.

 

Never heard of that brand. Is it French?

 

I got my first digital camera in 1998. That is 24-years of free photo processing.

Granted, it only did 640x480, and saved on a 3-1/2" floppy disk, but I have photos shot on that to this day.

 

I got mine in 1999, and by the time 2007 rolled around (when I took the pictures of the dampers), the resolution was high enough that you can see the timing marks, although the camera cost a few hundred bucks, and the computer to view the images cost even more. But when I had my shop working on cars 30 years ago, I never would have thought of taking pictures of broken parts, it was way too much h***le and expense.