gasket question - ZR-1 Net Registry Forums

vilant · 10-27-2012

I'm in the middle of removing my plenum. My question is: If one of the gaskets for the plenum is intact and the other tore. Would you replace both with new ones or just the torn one?
I heard the originals are the best but I'm unsure.

sammy · 10-27-2012

replace both with jerrys gaskets, his are every bit as good as the factory's

scottfab · 10-27-2012

Quote:

Originally Posted by vilant

I'm in the middle of removing my plenum. My question is: If one of the gaskets for the plenum is intact and the other tore. Would you replace both with new ones or just the torn one?
I heard the originals are the best but I'm unsure.

Cut your own out of rubber and you'll never have to replace them again.
I did this in the late 90s after experimenting with several other materials.
Same rubber gaskets ever since.

Oh and I'll add it very easy to do with the plenum as a guide.

vilant · 10-27-2012

Quote:

Originally Posted by scottfab

Cut your own out of rubber and you'll never have to replace them again.
I did this in the late 90s after experimenting with several other materials.
Same rubber gaskets ever since.

Oh and I'll add it very easy to do with the plenum as a guide.

I did consider doing it that way, but I was a bit lazy. I was already ordering new wires from Jerry so I got the gaskets too.

mike100 · 10-27-2012

Jerry's work well, but since they don't have the rubber rings molded into them, I have found that you should permatex/ aviation form-a-gasket the water and oil breather holes to prevent seepage after install.

Of course Jerry's are a must if you port since they are perfectly cut to accommodate 36mm porting.

GOLDCYLON · 10-27-2012

Just buy jerry's thicker pairs. GC

vilant · 10-28-2012

Quote:

Originally Posted by mike100

Jerry's work well, but since they don't have the rubber rings molded into them, I have found that you should permatex/ aviation form-a-gasket the water and oil breather holes to prevent seepage after install.

Of course Jerry's are a must if you port since they are perfectly cut to accommodate 36mm porting.

I have to ask, but why permatex? In other words what's the point of the gasket if your going to put permatex around everything. And how do you not make a mess putting the plenum back on w/ permatex on both sides?

mike100 · 10-28-2012

Quote:

Originally Posted by vilant

I have to ask, but why permatex? In other words what's the point of the gasket if your going to put permatex around everything. And how do you not make a mess putting the plenum back on w/ permatex on both sides?

Yes, it would be better if they had the rubber o-rings embossed/molded onto them with 36mm cut-outs, but who knows how much that would cost. BTW, I'm only dabbing on the brown sealer in three spots, not on the whole part.

The water port will work with a thin smear of rtv sealer, but the oil breather pass-thrus will soak into the gasket material and weep out the side if you don't dope them with the oil resistant permatex

vilant · 10-28-2012

Quote:

Originally Posted by mike100

Yes, it would be better if they had the rubber o-rings embossed/molded onto them with 36mm cut-outs, but who knows how much that would cost. BTW, I'm only dabbing on the brown sealer in three spots, not on the whole part.

The water port will work with a thin smear of rtv sealer, but the oil breather pass-thrus will soak into the gasket material and weep out the side if you don't dope them with the oil resistant permatex

Ahh, I see, makes sense. I was leary of putting it over all of the holes. I'll check to see if the permatex I have is oil resistant, if not I'll run out and buy some. Thanks

.

mike100 · 10-28-2012

I use this stuff

There are some no-name clones that work the same and are the same exact stuff. I can tell by the smell, actually. When RTV isn't as appropriate, this stuff usually works better. It also seals head bolt threads that go into water jackets- it just about works anywhere.

I had tried rtv before to seal the pcv vents on the I/H's, but unless you can assemble the parts immediately and get them torqued, the rtv might cure before the parts set together creating a small void for oil to follow. This brown goo permatex will give you a lot more time to get it assembled.

10-27-2012	#1
vilant Join Date: Jun 2012 Location: PA Posts: 772	gasket question I'm in the middle of removing my plenum. My question is: If one of the gaskets for the plenum is intact and the other tore. Would you replace both with new ones or just the torn one? I heard the originals are the best but I'm unsure. __________________ Joe 1990 Bright Red ZR-1 #2599

10-27-2012	#2
sammy Join Date: Jun 2010 Location: back in lone pine Posts: 591	Re: gasket question replace both with jerrys gaskets, his are every bit as good as the factory's

10-27-2012	#5
mike100 Join Date: Feb 2011 Location: San Marcos CA Posts: 1,802	Re: gasket question Jerry's work well, but since they don't have the rubber rings molded into them, I have found that you should permatex/ aviation form-a-gasket the water and oil breather holes to prevent seepage after install. Of course Jerry's are a must if you port since they are perfectly cut to accommodate 36mm porting.

10-27-2012	#6
GOLDCYLON Join Date: May 2007 Location: Peoria, AZ Posts: 9,160	Re: gasket question Just buy jerry's thicker pairs. GC __________________ GOLDCYLON - 91 ZR-1 #2014 GOLDCYLON - 90 ZR-1 #2794, 4L60e (Formerly Schrade's) GOLDCYLON - 11 CTS-V Arizona State Director 91 WHITE/BLACK #2014. 380 P&P&PCed,Ported Heads, Jeal Long tubes, Corsa Exhaust/FIKSE FM-5s /LED TLs, LED Headlights, Front Wilwood 6 piston narrowlite calipers and rear Wilwood caliper street shop mod,CNCed Coolant Pipes,TPI Cvr,Filter cover,Stainless Bolts, DRM/DOM PROM /ZFDOC mod build #102,DRLs,BMAD with stainless Debris Screen,Coplan Air Blaster, Pioneer APP Radio 4,Brey-Krause HB,Sub Bar,Fire extinguisher seat mount,DRM Coilovers,LEDs everywhere,Compass mirror (orange),V1 DIC hidden display, Homelink sun visor, Carbon Fiber top x3 and APSIS Carbon Fiber interior, APSIS CF Steering Wheel/NAPA Leather, Banski trailing arms, Guldstrand front suspension,urethane bushings from Prothane (total suspension) ZFDoc drive shaft safety loop, raptor shift light (orange),AO engineering louver front plate, Console seat cushion, 96CE seats with black custom Sheepskins, ss billet catch can,Viper remote entry/alarm,Cragar Rear Louvers,LED side louver lights, Dewitts Radiator with SPAL fans and a Woods 160 T-Stat 90 RED/BLACK #2794. 4L60e Automatic Stage V by RPM Transmission, TCI Dedicated TCM, OBX Stainless Headers, Corsa Exhaust, SAN Secondaries and Haibeck PROM, Exotic Muscle Coil overs, LED Interior Lights, LED Tail Lights, LED Headlights, 94 Sport seats with black custom Sheepskins , Cragar rear louvers, GS Front calipers, Banski Trailing arms, APSIS Carbon Fiber steering wheel, Front and Rear Baer Eradispeeds, DRLs, Guldstrand front suspension,urethane bushings from Prothane (total suspension), Dewitt's Raditor with Dual SPAL fans and a Haibeck 170 T-Stat 11 RED/GREY CTS-V

10-28-2012	#10
mike100 Join Date: Feb 2011 Location: San Marcos CA Posts: 1,802	Re: gasket question I use this stuff There are some no-name clones that work the same and are the same exact stuff. I can tell by the smell, actually. When RTV isn't as appropriate, this stuff usually works better. It also seals head bolt threads that go into water jackets- it just about works anywhere. I had tried rtv before to seal the pcv vents on the I/H's, but unless you can assemble the parts immediately and get them torqued, the rtv might cure before the parts set together creating a small void for oil to follow. This brown goo permatex will give you a lot more time to get it assembled.