Anyone Know What This Part Is? [Archive] - ZR-1 Net Registry Forums

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Erik

10-08-2021, 08:12 PM

My mechanic discovered I have a vacuum leak. A connector that isn't sealing properly. He said:

"Yes you can access it fairly easily, it is the rectangular silicone coupler with 2 inlets and 2 outlets to the left rear of the throttle body below the upper plenum. Not much room to tape it up, I tried placing piece of rubber between one of the hoses and the lower plenum to force it to fit better. Made things worse. "

Any thoughts?

Shizap

10-08-2021, 09:01 PM

Sounds like the dual vacuum connector that the 90 cars have.

This is an excerpt from Marc's vacuum leak article.

Erik

10-08-2021, 09:19 PM

Sounds like the dual vacuum connector that the 90 cars have.

This is an excerpt from Marc's vacuum leak article.

Thanks!
Is that something reasonably easy to get at? Or, like with every other thing on this car, you have to pull the plenum? :)

Shizap

10-08-2021, 09:32 PM

Thanks!
Is that something reasonably easy to get at? Or, like with every other thing on this car, you have to pull the plenum? :)

You might be able to slip on the two new hoses with the plenum on, but it would be much easier with the plenum off.
- Scott

A26B

10-09-2021, 12:31 AM

Erik

10-09-2021, 05:59 AM

Can be accessed for replacement without pulling the plenum.

Connector, Plenum Vacuum, 1990 model only.
https://cdn10.bigcommerce.com/s-nkg90o/products/819/images/1874/10110976__86048.1447114957.120.120.jpg?c=2

Here is where to obtain this part.
https://www.jerrysgaskets.com/connector-plenum-vacuum-new-1990-13d4/

FYI, It is nitrile rubber, not silicone.

Thanks, Jerry.
I?m surprised I haven?t ordered one. I thought I had bought every rubber piece from you. :)

Erik

10-09-2021, 06:25 AM

Can be accessed for replacement without pulling the plenum.

Connector, Plenum Vacuum, 1990 model only.
https://cdn10.bigcommerce.com/s-nkg90o/products/819/images/1874/10110976__86048.1447114957.120.120.jpg?c=2

Here is where to obtain this part.
https://www.jerrysgaskets.com/connector-plenum-vacuum-new-1990-13d4/

FYI, It is nitrile rubber, not silicone.

Hah! Turns out I did order one from you last year, as there was a leak there previously. Perhaps last idiot mechanic screwed it up on installation, or never actually replaced it? Are any of the lines connected to it known to fail?

http://zr1.net/forum/showthread.php?t=32275

A26B

10-09-2021, 09:29 AM

Hah! Turns out I did order one from you last year, as there was a leak there previously. Perhaps last idiot mechanic screwed it up on installation, or never actually replaced it? Are any of the lines connected to it known to fail?

http://zr1.net/forum/showthread.php?t=32275

I am not aware of any of the pipes failing per se, but they do need to be straight to make the most effective seal. If the pipes have been bent previously to use 2 pieces of hose (before we had the Connector manufactured), then they should be carefully straightened to be parallel with each other.

Erik

10-09-2021, 11:41 AM

I am not aware of any of the pipes failing per se, but they do need to be straight to make the most effective seal. If the pipes have been bent previously to use 2 pieces of hose (before we had the Connector manufactured), then they should be carefully straightened to be parallel with each other.

Thanks, Jerry.

Putting my order together now. Already added that, plus a backup set of plenum gaskets. You should actually just automatically include a set of plenum gaskets every time someone orders. Always need a backup set with a ZR-1. :)

Erik

10-10-2021, 10:13 PM

Doesn?t look totally straight to me. Thoughts?

btw, what should I remove to make this thing easiest to access?