LT4 distributor install photos

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May 8, 2008 | 02:37 PM

#21

Brand-X

Thread Starter

Pro

Joined: Dec 2002

Posts: 704

Likes: 16

From: Dallas Texas

Quote:

Originally Posted by 2bar-c4

Brand X,

What type of opti issues did you have? Was it something you saw in a data log or not enough power from the ltcc coils?

I am running a Caroll 8 rib on a T trim and curious what I should look for?

Thanks
Ron

Popping under cruise, shutting down (no spark condition) for no apparent reason, moisture and heat causing pigtail to corrode and break and loose contact, bearing wearing out, difficult servicing distrib or changing plug wires, car breaking up under boost which is cured by replacing opti. I personally think (no proof, just my guess) high revs kill the opti due to torsional loads at 6800-7000 rpm causing it break down more quickly and start giving it problems. I have seen signs in more than one optispark distrib of the degree wheel making physical contact with the opticle sensor, which I beleive resulted from those torsional loads and resulted in the premature death of the distributor. Also think my MSD box is causing it to break down more quickly too as it produces much more ozone from the multi discharge. Furthermore, I've had a checkvalve go bad on my vented opti which resulted in pressurizing my distributor with moist, oily air from the intake. In short, I change my opti about once a year, which I beleive results from me runnning it outside its design capabilities. Like I said, the reasons are my best guess...if you have a cure, I'm all ears. If you aren't having problems, consider yourself lucky and dont fix what isn't broken...just my two cents!
CT

May 9, 2008 | 09:32 AM

#22

AKS Racing

Safety Car

Joined: Apr 2001

Posts: 3,525

Likes: 2

From: Houston TX

Quote:

Originally Posted by 2bar-c4

Ron,
I thought you were running a turbo in a L-98 (non-opti) car. Maybe I am thinking of someone else???
Aaron

May 9, 2008 | 01:44 PM

#23

BrianCunningham

Team Owner

Joined: Mar 2001

Posts: 30,856

Likes: 293

From: Boston, Dallas, Detroit, SoCal, back to Boston MA

Quote:

Originally Posted by Brand-X

Furthermore, I've had a checkvalve go bad on my vented opti which resulted in pressurizing my distributor with moist, oily air from the intake.

Why not hook the vacuum side of the opti to the inlet of the blower?

May 9, 2008 | 03:30 PM

#24

2bar-c4

Instructor

Joined: Nov 2007

Posts: 105

Likes: 0

From: Davisburg Michigan

No cure Brand x I was just trying to gain some knowlege, I am running the opti electronics and a Cap and rotor distributor on a converted single plane. I had a problem the other night with it shutting down at idle and wouldn't restart, but I think I have that traced down to not haveing heat sink compound on the ignition module.
AKS,
Yes that was me, I was running a single t- 72 on a 398 with a mega squirt, it was awsome until I had an electrical fire.

Ron

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