95Blackbirdlt1

What's everyone take on replacements opti spark? Mine is acting up when it gets to operating temperature

ElkySS

iTrader: (6)

Either ACDelco or MSD. I like the MSD because it's rebuildable.

Just be sure that's what you're problem is before buying anything. Could be an o2 sensor.

ShovelMan

My cheap one from O'Reilly has been going strong for over a year now. Part GM#22. Lifetime warranty with a brick and mortar store that has the item on hand beats designer brand optis purchased online.

tldr: purchase an Opti that'll give you the least turnaround when having it serviced/swap for warranty.

ACE1252

This.

I've only run ACDelco units. Had none fail. I replaced my OEM unit as a little bit of preventive maintenance during my cam swap at around 90K.

stevo9389

ACDelco all the way although the MSD is a nice runner up. The opti doesn't suck, the owners who ignored them do.

ElkySS

iTrader: (6)

The guy with an MSD opti in his avatar say delco is better? wut?

BALLSS

another thread on another forum notes MSD is potentially having issues with their current optis. Does not seem to be a final end to the OP's issue in the thread link but Injunier notes he was working with MSD on a solution that MSD seems cooperative in finding out wtf is going on.

https://www.camaroz28.com/forums/lt1...d-help-885260/

My $.02 is use a original AC Delco opti if you can and replace C&R with a MSD C&R if/when needed.

stevo9389

Giving credit where credit is due It will be another 15 years and 120k miles until I know the MSD unit can hang in there for the long haul just as well as the OEM.

smitty2919

You know it's 100% your opti that is the problem?

KW Baraka

iTrader: (7)

I have an OEM opti with less than 50 miles on it.

PM me if interested.

KW

wrd1972

iTrader: (12)

Installed one from Advance for $115 w/ lifetime warranty. Took it apart and inspected and will say the quality looked compared to NON Delco optis in years past. Seals were good and the wheel was not warped.

Still RTV'd it together and loctited the rotor screws and its been working fine. Call it the cynic but I would not at all be surprised id the Delcos are coming from China now days.

nomoneyz

iTrader: (15)

I used a delco one when I replaced mine. I've only done it one time at 120k. Have 160k now. Two water pumps leaked on it in that time also and it's still good. Make sure it's the opti causing your issue. The opti is actually a great distributor.

leadfoot4

iTrader: (1)

From everything I've ever read on this forum, the determining factor of what is a "good" or a "bad" Opti, is the optical sensor. Mitsubishi sensors were what were used as OE, and were good, but others not so good.

FWIW, you CAN replace just the cap and rotor, on an OptiSpark distributor. Standard Ignition Products did make them, at least they did 8-10 years ago. With respect to alternate brands, for Opti replacements, there was, at one time, an outfit making what they referred to as "super HD Optis", selling them under the Dynaspark brand. However, I think they went out of business. Too limited a market....

nickp

iTrader: (2)

I have a used OEM Delco opti unit, with a brand new MSD cap and rotor still in the box. Pm me if your interested.

Rob94hawk

iTrader: (1)

**** MSD and it's code 36 after less than 2 years.