LT1 Based Engine Tech 1993-1997 LT1/LT4 Engine Related

MSD Opti Owners...

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Old 06-06-2007, 11:08 PM
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MSD Opti Owners...

So how they holdiing up so far??

Lets hear those 1st hand reviews with them
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Old 06-07-2007, 01:07 AM
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Only 4 months so far. Well see how it hold up over time.
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Old 06-07-2007, 12:07 PM
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I was a previous MSD opti owner, couldn't get 1200rpm out of the thing. Had to send it back and get a GM opti. beautiful now
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Old 06-07-2007, 01:25 PM
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Originally Posted by 3DFORMULA
I was a previous MSD opti owner, couldn't get 1200rpm out of the thing. Had to send it back and get a GM opti. beautiful now
When did you purchase the opti?

Im just wonderin if they fix'd all the bugs the older one had at this point
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Old 06-07-2007, 08:35 PM
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I've had it since it came out. About 5000 miles and counting.
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Old 06-08-2007, 06:11 PM
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I installed my new MSD distributor last night and everything seems to be OK. I have a bracket race tomorrow and another on Sunday, so after this weekend I'll know how well it runs. I had a random high RPM miss that I hope the MSD fixes.

Here are some photos.

WD




Last edited by The Engineer; 06-08-2007 at 07:31 PM.
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Old 06-08-2007, 07:08 PM
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My first one only lasted a week. Well not even. LOL When they replaced it last year it has been working with out a problem. Even lasted thru a bad water pump. Spinning 6800 RPM
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Old 06-08-2007, 07:35 PM
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Originally Posted by jakesz28
My first one only lasted a week. Well not even. LOL When they replaced it last year it has been working with out a problem. Even lasted thru a bad water pump. Spinning 6800 RPM
Do you believe the MSD problems were limited to the early productions units only?

WD
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Old 06-08-2007, 07:48 PM
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Through my research, seems like evryone who bought the Opti in the early stages of production had the problems, others who bought recently are happy..

"The Engineer"- Now where did you buy yours from? Did you use the Oring or did u get a proformed gasket?

Other than that, looks like a very clean install!
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Old 06-08-2007, 08:18 PM
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Originally Posted by bow94z
"The Engineer"- Now where did you buy yours from? Did you use the Oring or did u get a proformed gasket?

Other than that, looks like a very clean install!
I ordered it this week from Jeg's with the NHRA racer discount and saved a few bucks.

And, I used the O-ring that came with the MSD. Which was compressed some while installing the cap. Is there an issue with the O-ring?

WD
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Old 06-08-2007, 11:50 PM
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Originally Posted by The Engineer
I ordered it this week from Jeg's with the NHRA racer discount and saved a few bucks.

And, I used the O-ring that came with the MSD. Which was compressed some while installing the cap. Is there an issue with the O-ring?

WD
ah ok, let me know how it held up at the races
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Old 06-09-2007, 08:23 AM
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Originally Posted by The Engineer
Is there an issue with the O-ring?
WD
Yes there is one:

http://home.comcast.net/~markpoulton/dist.pdf

If its not installed properly or if the o-ring slip while youre thitgthening the cap it could bring this problem.

Mine work for 60miles then died because of a faulty o-ring seated

Im waiting for my new one...

Last edited by always faster; 06-09-2007 at 11:02 AM.
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Old 06-09-2007, 10:31 AM
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I thought MSD had replaced the o-ring with a gasket.
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Old 06-09-2007, 10:59 AM
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Originally Posted by BTC
I thought MSD had replaced the o-ring with a gasket.
I ve bought mine 2 weeks ago and it was coming with the "o"-ring
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Old 06-10-2007, 12:03 AM
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Today was the first runs on my new MSD distributor. I just got back from the track a few minutes ago and here’s the ugly story! I had three “perfect runs” (time trials) and my LT 396 engine never ran better (real clean without a miss, or any high RPM pop). Again, everything was perfect on those first three runs and I’m turn over 6500 RPM.

Then during the first elimination round I had some high RPM miss-fires (but I won). During the second round the miss got a lot worse (but won again) and by the third round it wouldn’t rev over about 5200 without a “terrible miss” (lost big time).

So, I don’t think there is any question about it, the new MSD went out after only three runs! No one has the bad luck I have and I’m really disappointed with the MSD ($400+ for the part and several hours of my work). Anyway, I’m pull the MSD tomorrow and I’ll remove the cap to see if I can tell what’s wrong.

WD
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