Contour Enthusiasts Group Archives Forums Modifications Duratec Maintenance 3 Simple IMRC Questions...

Hi again - As the title says, I have a few questions about the IMRC, particulary the linkage and spring attached to the LIM. This is partly a follow up to my recent Intake Manifold Blues thread...

1. After re-assembling everything from the lower and upper intake manifold cleaning, my suspicions that I screwed up the IMRC functioning were soon confirmed... When the IMRC control box pulls the cable, does that open or close those extra inlets?

2. When I attached the IMRC spring and bracket back to the lower manifold, there was an L shaped piece of wire/cable (perhaps the end of the spring) Is this the piece that puts tension on the spring, and if so, where does it go?

3. Final question - Does anyone have any pictures or diagrams of the IMRC spring, bracket, and connector in their proper place? (yes, i searched first! )

Thanks guys for you infinite help and patience

- Jake

1. opens

2. not sure

3. not sure

sorry I can't help more

thanks brian

and I think i figured out questions #2 and #3 just by going through Ray's guide again (and actually looking at the pictures this time)

it seems the culprit is right here:

While we're on the subject...

On my 98.5 SVT, the secondaries don't open. How much power is lost??

Either a hp number or seat of pants reading is acceptable

IIRC Demon stated about 40 hp/tq at the opening point.

This is obviously affected by which gear you are in.


Ray

Brutal!!

I guess that explains why my car is slower than a base cobalt :/