Hi all,i recently installed all the bolts on with tuning for the LE2 package and first i start having problems that i told in another post.

Recently fix the problem installing new optispark From summit ,and then used ir for aboit 2 weeks and then kaboom again.

Do you know what can be the problem?i did a search and see that Oem ,and summit optisparks doesnt like 6500+ RPMS.

if i buy a MSD or dynatech can fix this problem of optis kaboom?

Thank you very much for your help.

 

Is the dowel pin in your camshaft the right length? It should stick out just a hair past one of the camshaft sprocket bolts. If it is too long it will put the opti rotor and internals in a bind and go out pretty quick.

 

Did you check the cam dowel pin length when it went together? Lots of opti's have been killed by this. Doh beat me to it

 

Did you correctly install the vaccume lines to it? One goes to the elbow, and the other goes to the intake. The one that goes to the intake has a check valve and a vaccume breaker. If you bypassed those then that is the problem. I killed 2 opti's before I figured that out. If that's ok, I would check the dowel length. You have to take it appart any way so now would be the best time to look. Do you still have your original cam?

 

i have the LE2 cam does it have different dowel pin of the stock?

 

i will check the vaccume lines thank you very much!

 

Comp just puts them in however they feel. Some are way too long. Gotta double check that to be sure.

 

Depending on your car year and optispark type (vented or nonvented) you need to match the dowel pin length of the stock cam to the aftermarket cam. Comp will send out cams for the longer pin length so you can trim them if need be.

Bret

 

can you believe this! the damm opticrap exploded again,i was at gas station and when i started the engine a weird sound like a rocket ,and then no spark again!dammit!is that is because im reving the car to much and the summit optisparks doesnt handle +6000 RPM's ???this is the third optispark,i dont want to buy a msd and kaboom again!

the mechanic told me that the dowel pin lenght is ok.

thx for help.!

 

Your mechanic is probably ASSuming, as most mechanics do. Unless he physically checked it and measured, it's probably too long.

I'd be a hefty chunk of change your dowel pin is too long. There's no other reason to blow up so many opti's so quickly.

It's very easy to check this w/o going through too much trouble, seeing as your pulling an opti off again.

Put a dab of red paint on the tip of the dowel and present your new opti on, bolt it in and see if you get a mark inside the opti slot, if you do.. it's TOO LONG. No, you don't have to pull the cam back out, but you have to get creative with a dremel and make 100% sure you cover up well around the opti seal to not get any metal shavings in. You can then grind the dowel down some. DO NOT hit it with a hammer, a) most of the time they don't budge b) you'll **** up your cam bearings.

I dont' have the measurement of what it should be w/ the timing set on (ie, how much should stick out of the timing set hole)...

 

I have a new uninstalled LE1.5 cam and the stocker sitting on the bench. I am going to mic mine tonight and post a photo.

 

Mic it with a timing set on it, the information about how long it should be is already on shoebox's site. The cams come from comp in all different lengths randomly. My LE3 and LE2 had different dowel lengths.

 

I've done two cam swaps on my car, and Comp hasn't got the lenght right either time. Once it was a little long, the other time it was way short.

 

But, do you know the exact Size or Length of the cam pin and is there a way to measure it??

 

Sort of hard to figure out exactly what the condition of the Opti is when it fails, using terms like "kaboom" and "exploded". Are you saying the the entire body and internals of the Opti are literally exploding in a million pieces? If not, you might want to give a more precise description of the condition.

Could you possibly have a problem with the bolts in the damper being too long and contacting the Opti?