Copper spray BTR ls9 gaskets?? - Camaro5 Chevy Camaro Forum / Camaro ZL1, SS and V6 Forums

trans665 · 05-10-2018, 09:54 AM

Just as title says....I'm having water blow by from the coolent Reservoir under high boost...just got them in and about to start replacing but I hear different things about the copper spray....thank you

frankwjr · 05-10-2018, 10:31 AM

some do..some don't...lol...sorry I know it doesn't answer your q....better q for me is are you using head studs? also were the heads whacked for straightness and was the block checked?

stock ls3 heads? may need to step up to lsa/ls9 or after market if the above isn't enough...good luck!

peace..

btw - if you end up using the copper...spray both sides and let that stuff setup and get real tacky before installing! l8tr

trans665 · 05-10-2018, 10:42 AM

ARP studs with LS3 heads but the regular LS3 head gaskets. Turns out the person that installed the heads did the driver side perfectly fine with 85 PSI but the passenger side was all 55 PSI. So the studs weren't the issue. It's the person that did the work

Punisher_ATX · 05-10-2018, 11:10 AM

FWIW i Copper spray all of mine. LS9's and studs

Russell James · 05-11-2018, 08:31 AM

If the heads have been on/off multiple times... it'd be really good to get a machinist's straight edge and measure the end to end, corner to corner flatness. Anything other than near perfection, and I'd have a .005" clean up cut on them next time off. I've seen several people chasing headgasket issues with all kinds of tricks, when really the heads need a clean up cut. The really good long machinists straight edges are pricey, but it finds the issue instead of band-aiding it. The block deck also needs to be checked.

Along with - razor blade only gasket scraping. If someone has taken an air drill wizzy wheel scouring pad to either the block deck or head deck... it's toast. Those things destroy the factory machined flatness. Along with spraying aluminum bits everywhere that will tear up the bearings.

go_go_gadget88 · 05-11-2018, 10:03 AM

Quote:

Originally Posted by Russell James

If someone has taken an air drill wizzy wheel scouring pad to either the block deck or head deck... it's toast. Those things destroy the factory machined flatness. Along with spraying aluminum bits everywhere that will tear up the bearings.

This is exactly why I did this by hand when cleaning deck/pistons when heads were off. Yeah a wheel would be 100x faster for cleaning the surface, but can eat into the aluminum pretty easy. Much less chance of having any issues with flatness if you scrub them down by hand.

trans665 · 05-16-2018, 10:38 AM

These heads have been off multiple times. I'm just going to order some GM MP LS3 Ported heads from summit racing to be safe.

05-10-2018, 09:54 AM	#1
trans665 Drives: 2013 2ss Join Date: May 2011 Location: corpus christi Posts: 488	Copper spray BTR ls9 gaskets?? Just as title says....I'm having water blow by from the coolent Reservoir under high boost...just got them in and about to start replacing but I hear different things about the copper spray....thank you __________________ 2013 auto ss..full bmr suspension..3800 stall...s475 turbocharger on 16 psi with 150 nitrous outlet plate...,BTR stage 3 turbo cam.....100% Methanol injection....LY6 6.0 iorn block ...

05-10-2018, 10:31 AM	#2
frankwjr Drives: 2010 SS 2SS M6 Join Date: Aug 2016 Location: Smithsburg, Md. Posts: 2,445	some do..some don't...lol...sorry I know it doesn't answer your q....better q for me is are you using head studs? also were the heads whacked for straightness and was the block checked? stock ls3 heads? may need to step up to lsa/ls9 or after market if the above isn't enough...good luck! peace.. btw - if you end up using the copper...spray both sides and let that stuff setup and get real tacky before installing! l8tr __________________ 2010 SS 2SS M6 - Tune by RDP dynoSteve!(Woot) - Daily Driver - *150K!* - All work by me...

05-10-2018, 10:42 AM	#3
trans665 Drives: 2013 2ss Join Date: May 2011 Location: corpus christi Posts: 488	ARP studs with LS3 heads but the regular LS3 head gaskets. Turns out the person that installed the heads did the driver side perfectly fine with 85 PSI but the passenger side was all 55 PSI. So the studs weren't the issue. It's the person that did the work __________________ 2013 auto ss..full bmr suspension..3800 stall...s475 turbocharger on 16 psi with 150 nitrous outlet plate...,BTR stage 3 turbo cam.....100% Methanol injection....LY6 6.0 iorn block ...

05-16-2018, 10:38 AM	#7
trans665 Drives: 2013 2ss Join Date: May 2011 Location: corpus christi Posts: 488	These heads have been off multiple times. I'm just going to order some GM MP LS3 Ported heads from summit racing to be safe. __________________ 2013 auto ss..full bmr suspension..3800 stall...s475 turbocharger on 16 psi with 150 nitrous outlet plate...,BTR stage 3 turbo cam.....100% Methanol injection....LY6 6.0 iorn block ...

05-10-2018, 11:10 AM	#4
Punisher_ATX Drives: 2010 SS Join Date: Jun 2015 Location: Austin Posts: 439	FWIW i Copper spray all of mine. LS9's and studs

05-11-2018, 08:31 AM	#5
Russell James Drives: '15 SS 1LE, '69 Z28 drag car Join Date: Dec 2009 Location: Mich Posts: 4,482	If the heads have been on/off multiple times... it'd be really good to get a machinist's straight edge and measure the end to end, corner to corner flatness. Anything other than near perfection, and I'd have a .005" clean up cut on them next time off. I've seen several people chasing headgasket issues with all kinds of tricks, when really the heads need a clean up cut. The really good long machinists straight edges are pricey, but it finds the issue instead of band-aiding it. The block deck also needs to be checked. Along with - razor blade only gasket scraping. If someone has taken an air drill wizzy wheel scouring pad to either the block deck or head deck... it's toast. Those things destroy the factory machined flatness. Along with spraying aluminum bits everywhere that will tear up the bearings.