well then you have .1 mpg better and a better running car...

 

I did not mean to say you would see a .1 gain, just used it as an example that tiny increases in fuel economy are a BIG deal to OEMs as are longer and longer maintenance intervals.

 

for those of you that are following this thread i just have one thing to say after spending over 4 hours just to remove this stupid opti.
I am not putting spark threw another opti...ever!
I took this thing off and it sounds like marbles inside, i am running to the parts store to pick up that goofy tool you need to get the cap off the distributor, gm sure didnt want anyone swapping...this thing has take it in to the dealer all over it.
The main reason i can see for doing something along the lines of a ltcc is to take as much out of the opti as possible, so the only thing i plan on using the opte for is the optical trigger part, spark will now be coming from the ls1 coil setup. From the posts i have read it seems like all the problems start when we start spinning the lt1 past 6k rpm's, rotor seems to disintegrate, i am not kidding when i say my opti sounds like marbles when you shake it.
Once i get the cap off i will post a pick of what the rotor looks like.
I think that for a stock setup the opti might be fine for running spark threw it but if you have a built lt1 your gonna soin it past 6k and that seems to be the start of all the rotor issues.

 

Sound like you need a new opti anyway.

 

this hobby is not a cheap one, so 400 bucks for the ltcc is nothing!
I have over 5k in parts alone into my motor so IMO another 400 bucks aint much.

 

Some set ups work well with a stock style opti. However if you have a set up that eats opti's up regardless of type/brand/etc. and everthing is to spec., regardless of what your heart tells you, it's time for a change. O and if you check most vehicles now days that are fuel injected have multiple coil set ups. That should tell you something right there.

What your opti is doing mine did to three units, all being AC Delco GM units. I'm running an old original unit now with a delteq system that no longer works. However the position sensor works great and the set up paired with this type of aftermarket system works flawlessly. The LTCC is a better set up than the Delteq in my opinion due to the added built in features. I have to use a DIS-4 with extra coil packs to get my system to retard the spark now for nitrous.

Simply put some cars run great for a long time with a factory opti. Some don't. Please don't try and think that every set up is the same. It just isn't true. Find what works with your set up and stick with it.

In my case it's a burned out old GM opti and the Delteq system that gets er done.

G/L with whatever you find to work for you.

 

Many "opti failures" are owner neglect when it comes to properly fastening the rotor. Enough guys use them at high rpms, some over 7000rpms, only REAL issue with a stock opti at that rpm is the plastic reainers on the rotor conducto, and guys have tried a number of ways to fix that, even rivets work. The MSD rotor though has the conductor much more firmly attached.

 

This was a gm opti purchased ~2003, rotor/cap was never swapped on this unit.
edit:forgot to mention my car is a garage queen so opti only had 2000 miles on at best, probably less than that as i dont drive the car much anymore...family and all.
after getting the cap off the metal tip part of the rotor is what actually came loose, looks like the little plastic tabs that hold the metal rotor tip didnt hold at the rpm's i'm pushing.
Anyway onto the LTCC, i cant be doing this every time the plastic tabs dont hold the metal part of the rotor, I think it's from spinning the motor past 6k.
I get that not everyone needs the ltcc but I feel that it would be in my best interest since this is going to be an issue with my car.
The rotor is just not staying on the opti for me so I need an alternative.

 

LMAO...

Did somebody say .1 MPG gain????

That's classic.
-Ivan

 

I can see the advantages of a multi-coil system, but the opti has never failed on my car either. It has the Crane Hi-6 and Crane LX-92 coil too. It's always been a non-issue with me.

 

I recently had to do a cam swap on my car due to a bad lifter. When I removed the cap from my Opti, this is what I found.


My car had 128,000 miles on it with the original Opti, cap and rotor. The rotor screw that had fallen out and the loose rotor had been the cause of an occasional high RPM miss. I replaced the Opti and used Loc-tite on the rotor screws.
Other than that I've not had any Opti-Woes.