What opti will I need?
03-09-2009, 12:02 PM
#1
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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:
03-09-2009, 12:21 PM
#2
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:
03-09-2009, 12:34 PM
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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?
03-09-2009, 12:38 PM
#4
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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; 03-09-2009 at 12:45 PM.
03-09-2009, 05:12 PM
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03-12-2009, 12:19 PM
#10
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03-12-2009, 12:50 PM
#12
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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.
03-12-2009, 12:54 PM
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It is still speed density. It has a maf thing on the intake, but I was told it was just there for an adapter with the moroso intake (not pictured).
Here's some pics, note the red intake (painted?):
Here's some pics, note the red intake (painted?):
03-12-2009, 02:48 PM
#18
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.