ISC valve diaphragm
- Thread starter jake8790
- Start date
Toyota or post in the wtb section or look for part outs.
http://www.cygnusx1.net/Supra/Library/EPC/291420/catalog.aspx?F=2211&P=2
http://www.cygnusx1.net/Supra/Library/EPC/291420/catalog.aspx?F=2211&P=2
You may be better off running a quality in-line check valve.
I installed a 1jz IACV in my FFIM with a new robber grommet and diaphragm from Toyota. The thing leaks bad under boost. I've heard of the factory diaphragm holding at upwards of 35psi, but for some reason, mine leaks bad at even low boost. I run a metal breather filter and I can hear it screaming during acceleration. I've since purchased a in-line check valve to run in between the IACV and breather filter, making the internal diaphragm obsolete.
An in-line check valve can be purchased here:
http://www.autozone.com/autozone/parts/GP-Sorensen-Air-Pump-Check-Valve/_/N-93xps?itemIdentifier=261617_0_0_
Must be on special because they were $25/ea when I bought mine. I'm running 3 of them. One for the IACV and two for my catch can setup (1 to the intake manifold and 1 to the turbo intake pipe).
They do a much better job than those cheaper Purolator ones that I've seen others use. Those never seal for long and begin to leak, even after oiling.
[IMG]http://shop.advanceautoparts.com/wcsstore/CVWEB/staticproductimage//5/large/5850347_pur_pv1049_pri_larg.jpg
I installed a 1jz IACV in my FFIM with a new robber grommet and diaphragm from Toyota. The thing leaks bad under boost. I've heard of the factory diaphragm holding at upwards of 35psi, but for some reason, mine leaks bad at even low boost. I run a metal breather filter and I can hear it screaming during acceleration. I've since purchased a in-line check valve to run in between the IACV and breather filter, making the internal diaphragm obsolete.
An in-line check valve can be purchased here:
http://www.autozone.com/autozone/parts/GP-Sorensen-Air-Pump-Check-Valve/_/N-93xps?itemIdentifier=261617_0_0_
Must be on special because they were $25/ea when I bought mine. I'm running 3 of them. One for the IACV and two for my catch can setup (1 to the intake manifold and 1 to the turbo intake pipe).
They do a much better job than those cheaper Purolator ones that I've seen others use. Those never seal for long and begin to leak, even after oiling.
[IMG]http://shop.advanceautoparts.com/wcsstore/CVWEB/staticproductimage//5/large/5850347_pur_pv1049_pri_larg.jpg
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