Optispark from Ebay
Thread Starter
Intermediate
Joined: Jan 2009
Posts: 25
Likes: 0
Optispark from Ebay
I purchased one of the $100.00 optispark units from Ebay, what a piece of junk!! Vette would only fire once in a while, then die instantly. Today I took it apart and compared the opti wheel timing to the original one, and it was off by a 1/4" or so. The shaft is machined with the rotor and opti wheel base, so no interchange possible with the original unit. I re-installed the original base with the new cap and rotor, fired up instantly and purred like a kitten. I have now decided to cut my $100.00 loss and ordered a GM Performance unit from Summit. Word to the wise, only purchase quality parts, you get what you pay for.
1992 Coupe, 137,000 miles, original optispark unit.
1992 Coupe, 137,000 miles, original optispark unit.
Race Director
Joined: Jan 2005
Posts: 10,641
Likes: 13
From: Slidell Louisiana
I purchased one of the $100.00 optispark units from Ebay, what a piece of junk!! Vette would only fire once in a while, then die instantly. Today I took it apart and compared the opti wheel timing to the original one, and it was off by a 1/4" or so. The shaft is machined with the rotor and opti wheel base, so no interchange possible with the original unit. I re-installed the original base with the new cap and rotor, fired up instantly and purred like a kitten. I have now decided to cut my $100.00 loss and ordered a GM Performance unit from Summit. Word to the wise, only purchase quality parts, you get what you pay for.
1992 Coupe, 137,000 miles, original optispark unit.
1992 Coupe, 137,000 miles, original optispark unit.
Sorry you got sucked into the crappy aftermarket opti scam.
Thread Starter
Intermediate
Joined: Jan 2009
Posts: 25
Likes: 0
I may try to get a refund, but the cap and rotor are worth keeping. I will also tryo to take some pics, but they are both gutted completely for now. The unit came in an unlabeled box, and no manufacturer info stamped or stickered on the unit. It threw the 16 code instantly upon the first start up.
Le Mans Master
Joined: Aug 2004
Posts: 5,141
Likes: 7
From: Metairie Louisiana
I went with thepartsladi opti. If you search for ebay opti on the Z28 forum or this one you will come across a ton of warnings and complaints. Most don't last more than a few months.
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Drifting
Joined: Oct 2004
Posts: 1,477
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From: Hawaii
Last edited by James93LT1; Jan 14, 2009 at 01:08 AM.
Le Mans Master
Joined: Dec 2004
Posts: 5,789
Likes: 8
From: Myrtle Beach SC
St. Jude Donor '05-'06
$35 a piece for estimate resale @ $175 talk about profit margin
Racer
Joined: Jul 2006
Posts: 339
Likes: 0
From: Stick-yer-head-in-an-oven Arizona
BTW - my original Opti failed (at 67,000 miles) due to leaking oil seals on the water pump shaft and the Opti spark shaft. The water pump hadn't started leaking . . . yet.
