re: looking for a single gasket - Page 2 - ZR-1 Net Registry Forums

Pete · 04-30-2010

Quote:

Originally Posted by phrogs

Ok I checked I have 3 76's and 1 77 so I can't sell you this one sucks Im not sure how I ended up odd but I did.

Johny you can use the 76's (RH) on the LH,so you basicly have 2 sets.
If anybody has the old design 77's (LH) they too can be used for RH will need to drill a hole on the protruding part of the gasket for oil passage.

I even had the idea if we were stuck with LH gaskets we could groove the head or block for O-ring just like the early oil pick up.

Pete

A26B · 04-30-2010

I don't like publishing info until a project is 100% complete, but in the case of head gaskets and the concern for future availability, I'm going to go ahead & fill you in on the status.

I have placed the order for the tooling.

Gaskets will be made in the same LH & RH configuration as the OEM gaskets

Gasket material will be graphite exterior with a steel core sandwiched in the center. The design & material is virtually identical to the current offerings by Victor & FelPro for premium head gaskets.

Before any gaskets are offered for sale, they will be tested for 2 days continual running on an engine dyno, making 50+ power pulls, and thermal cycling from high operating to ambient temp.

Availability? as soon as possible, 4~6 mo estimate. None will be produced in quantity until engine testing is completed.

The OEM material, Astadur, is now old technology, it's expensive and virtually unavailable. Event if it was readily available, the tooling cost would be exhorbitant as specialized tooling is required to make the cuts smooth.

The compressed thickness will be abt 0.005" thinner than the OEM. I've measured the fire ring height on over 80 cylinder sleeves. The variance is very tight, 0.041", +- 0.0005". Net fire ring clearance below the head with the OEM gasket is very close to 0.020", ample room for clearance with the new gasket. If anything, the new gasket and the associated reduction in fire ring/cyl head clearance could result in a cleaner burn. Another very slight change would be a minimal increase in compression. None of these changes are expected to have any noticable effect.

There you have it.

tomtom72 · 04-30-2010

I just have two words....wow & thank you Jerry!

okay, okay, math was never my strong suit.

GOLDCYLON · 04-30-2010

Quote:

Originally Posted by Pete

Johny you can use the 76's (RH) on the LH,so you basicly have 2 sets.
If anybody has the old design 77's (LH) they too can be used for RH will need to drill a hole on the protruding part of the gasket for oil passage.

I even had the idea if we were stuck with LH gaskets we could groove the head or block for O-ring just like the early oil pick up.

Pete

Ok Johnny based upon this respose is one available ?

Sgreg · 05-01-2010

Quote:

Originally Posted by GOLDCYLON

Thanks for replying Pete and Jerry. Ok Anyone else

D, no problem using two RH gaskets. If you don't find a left, buy another right.

jonszr1 · 05-01-2010

darrel i have a extra one if you need it , wish i would have known a couple of days earlier i could have just left it with bill. pm me if you still need one or bill has my ph .

GOLDCYLON · 05-02-2010

Found one thanks Folks, Jon Im amy already GTG

04-30-2010	#12
A26B Join Date: Dec 2003 Location: Arcadia,OK Posts: 3,394	Re: looking for a single gasket I don't like publishing info until a project is 100% complete, but in the case of head gaskets and the concern for future availability, I'm going to go ahead & fill you in on the status. I have placed the order for the tooling. Gaskets will be made in the same LH & RH configuration as the OEM gaskets Gasket material will be graphite exterior with a steel core sandwiched in the center. The design & material is virtually identical to the current offerings by Victor & FelPro for premium head gaskets. Before any gaskets are offered for sale, they will be tested for 2 days continual running on an engine dyno, making 50+ power pulls, and thermal cycling from high operating to ambient temp. Availability? as soon as possible, 4~6 mo estimate. None will be produced in quantity until engine testing is completed. The OEM material, Astadur, is now old technology, it's expensive and virtually unavailable. Event if it was readily available, the tooling cost would be exhorbitant as specialized tooling is required to make the cuts smooth. The compressed thickness will be abt 0.005" thinner than the OEM. I've measured the fire ring height on over 80 cylinder sleeves. The variance is very tight, 0.041", +- 0.0005". Net fire ring clearance below the head with the OEM gasket is very close to 0.020", ample room for clearance with the new gasket. If anything, the new gasket and the associated reduction in fire ring/cyl head clearance could result in a cleaner burn. Another very slight change would be a minimal increase in compression. None of these changes are expected to have any noticable effect. There you have it. __________________ Jerry Downey JERRYS LT5 GASKETS & PARTS http://www.jerrysgaskets.com 1994 *ZR-1, Black/Black, Lingenfelter Aerobody, 416cu in, 3.91 gears, coil-over susp, Brembo brakes, etc. 2016 Black-Red, 3LT-Z51 Auto 8-speed. Last edited by A26B; 04-30-2010 at 05:20 PM.*

04-30-2010	#13
tomtom72 Join Date: Dec 2004 Location: Jacksonville, FL USA Posts: 4,645	Re: looking for a single gasket I just have two words....wow & thank you Jerry! okay, okay, math was never my strong suit. __________________ 1990 ZR-1, Black/grey, #2233, stock. ZR-1 Net Reg Founding Member #316 & NCM member

05-01-2010	#16
jonszr1 Join Date: Sep 2006 Location: lone pine and mammoth lakes Posts: 1,407	Re: looking for a single gasket darrel i have a extra one if you need it , wish i would have known a couple of days earlier i could have just left it with bill. pm me if you still need one or bill has my ph .

05-02-2010	#17
GOLDCYLON Join Date: May 2007 Location: Peoria, AZ Posts: 9,155	Re: looking for a single gasket Found one thanks Folks, Jon Im amy already GTG __________________ 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