What opti will I need?
Thread Starter
Teching In
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What opti will I need? I am making a run to summit tomorrow and want to ensure I get the right opti.
Car is a 93 Formula, but the current opti is vented and has the long pigtail. Everything I read says that the opti should either be nonvented, or it's been converted and takes and 'short' pigtail, however it's neither.
Do I need a vented opti? Or a nonvented that is modified somehow to accept the long pigtail?
Here's what my pigtail looks like:
Car is a 93 Formula, but the current opti is vented and has the long pigtail. Everything I read says that the opti should either be nonvented, or it's been converted and takes and 'short' pigtail, however it's neither.
Do I need a vented opti? Or a nonvented that is modified somehow to accept the long pigtail?
Here's what my pigtail looks like:
I am making a run to summit tomorrow and want to ensure I get the right opti.
Car is a 93 Formula, but the current opti is vented and has the long pigtail. Everything I read says that the opti should either be nonvented, or it's been converted and takes and 'short' pigtail, however it's neither.
Do I need a vented opti? Or a nonvented that is modified somehow to accept the long pigtail?
Here's what my pigtail looks like:
Car is a 93 Formula, but the current opti is vented and has the long pigtail. Everything I read says that the opti should either be nonvented, or it's been converted and takes and 'short' pigtail, however it's neither.
Do I need a vented opti? Or a nonvented that is modified somehow to accept the long pigtail?
Here's what my pigtail looks like:
Thread Starter
Teching In
Joined: Oct 2008
Posts: 34
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I was thinking if I take the whole part to summit they could tell me. This is my first opti change and I don't know the difference in drive mechanism's just by looking at them. Anyone have a picture of the two different types maybe?
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From: Lansing, MI via Bowling Green, KY, Dalton GA, Nashville, TN & Atlanta, GA
I'm not familiar with the different wiring harnesses, but if you have a vented opti, something's been modified. The non-vented optis are driven by a splined shaft that slides into the camshaft. The vented optis are driven by a dowel pin on the camshaft. I would suggest confirming what you need prior to any purchase.
Last edited by BTC; Mar 9, 2009 at 12:45 PM.
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Verdad Gallardo TECH Fanatic
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From: Lansing, MI via Bowling Green, KY, Dalton GA, Nashville, TN & Atlanta, GA
The giveaway would be if the timing cover had the crank sensor in it. Even then, they could just have swapped covers with the old engine.
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I just figured checking for a MAF would be quick, easy, and provide a little more insight. I'm certainly no LT1 expert. Something is definitely different with the cam.
Oh, you fixed the link, good.
Yeah, the MAF is not plugged in. You have a CAI for a '94-'97 which will not fit on a '93 because of the gap due to having no MAF. '93 CAI's are longer.
Yeah, the MAF is not plugged in. You have a CAI for a '94-'97 which will not fit on a '93 because of the gap due to having no MAF. '93 CAI's are longer.
Just to clarify something I seen earlier in the thread, the cover doesn't have to have the crank sensor hole on it to be for the newer/vented styled opti. The 95 year cover is the same as the 96-97 minus the CPS hole.