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| Schrade | In-depth Opti article... | ||
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Elite Guru
 
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Excellent write-up on Opti system:
http://www.superchevy.com/how-to/0310 ... -understanding-modifying/ Linked to F/B C4 page; not many there will get much from it, as opposed to here... Bill, Andy, Matt, maybe integrate into one of tech stickies, without my name - need no 'credit', then delete this one??? |
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Posted on: 2016/7/20 16:22
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LT5, Marc Haibeck ECM module, AUTOMATIC!!! 
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| BillH | Re: In-depth Opti article... | ||
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The Stig Moderator
 
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Interesting article, however:
OptiSpark Maintainence: Buy your 92 or later C4. Buy 2 new Opti's, keep one in your shop and one in the car. And, the article stated that the 92-94 "tended to retain moisture", amusing. GM designed the Opti with a cheap paper gasket for the cap and then put 2 coolant bleeder screws right above the water pump. Yes, some will preform for many miles and some won't. It's the "some won't" that's the problem. |
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Posted on: 2016/7/20 23:08
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Every man dies but not every man lives. |
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| BrianCunningham | Re: In-depth Opti article... | ||
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Senior Guru
 
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All my '95 needed was a cap & rotor @ 120k
I don't exactly baby it either. |
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Posted on: 2016/7/21 14:58
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Polo Green 95 LT1 6-spd http://mysite.verizon.net/vzevcp74/ 383 LT1/Vortech Supercharger/AFR heads/Rod end suspension/Penske-Hardbar dual rate coilovers/Wilwood 6pot brakes NCCC Governor: http://BayStateCorvetteClub.com |
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| bogus | Re: In-depth Opti article... | ||
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Grand Imperial Pooh-Bah
 
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the larger bearing in the gen 2 opti helped a lot with lifespan.
The Mitsubishi sourced optical sensor is killer durable... 300k or more. A friend worked at a Dodge dealer and saw a lot of them come through in Mitsu engines, and with tons of miles on them, still going strong. A simple fix for the Gen 1 is to pickle the cap to opti chassis with copper RTV, then, using some line and fittings, a coolant drain bypass will work wonders. |
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Posted on: 2016/7/21 22:06
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The single biggest problem with communication is the illusion that it has taken place. - George Bernard Shaw Education is the best tool to overcome irrational fear. - me |
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| Schrade | Re: In-depth Opti article... | ||
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Elite Guru
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Probably why my '94 was datastreaming perfect signal @ 89k @ rebuild, with 15 years on it...
Quote:
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Posted on: 2016/7/22 13:56
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LT5, Marc Haibeck ECM module, AUTOMATIC!!!
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