mister2racer

I am building a sleeved turbo h22. Coming from my 3SGTE backround, depending on the gasket we use sometimes we spray sometimes we dont.

Do you guys copper spray stock honda headgaskets for race motors or put them in dry?

My application is a fully built sleeved SC61 H22 looking for anywhere close to 600whp.

Thanks,
Charles

Night_Minx

I used permatex hylomar spray. It about 2x the price of the copper. Has a bigger heat range, and everyone tells me its worth it. I have had no failures since the install. (Boosted SOHC)

Suprdave

Charlie, I always spray the OEM MLS Gaskets...cheap insurance.

Foozball26

yup definitely cheap insurance

$7 a can that will spray like 5-6 gaskets with 2 coats.

its one of those little things that adds up to a healthy setup.

espanol

if all your surfaces are even and your torque specs are right then you won"t need any copper spray.

mister2racer

with the 3SGTE motors... the HKS gaskets already have some kinda stickish coating and we dont spray those and never have problems. The TRD and stock Gen III gaskets are just MLS metal and we do spray those. I always figured that it certainly couldnt hurt anything.

I was just curious what the trend was in this community.

Ill go ahead and spray it. Couldn't hurt... could it?

Foozball26

nope won't hurt at all.

just helps it seal that much better especially if you're not sure if your surfaces are not perfectly flat.

earl

I always use a light coat of copper spray...good stuff

BlueShadow

Hey guys,

I just wanted to bring up a post from the dead. I had a few questions about using copper spray on my 83mm sleeved B18C with a Cometic 0.30 MLS HG. When you guys use copper spray on your HG do you just do a light coat on both sides? Do I have to wait for the stuff to dry a little or should I spray it on both sides and place the HG in place right away?

Also I wanted to run some other stuff by you guys to make sure I have it right. For my ARP head stud installation this is what I was gonna do:

-use a little ARP moly lube on the long threaded part of the stud (should I also use some blue loctite?)

-hand screw each stud in place long threaded part into the block and wiggle it every so often as I screw it down to release air pockets

-hold up the Cometic HG and spray both sides with copper spray (is this right?)

-let the copper spray dry a little (is this right?)

-carefully place HG into place

-install two dowel pins

-carefully lower head into place

-install washers onto each stud

-install 12pt nut onto each stud (will I need a 12pt deep socket?)

-torque it in steps up to 70-75 lb/ft (since I'm using the ARP moly lube)

Let me know if that sounds right guys.

Thanks

EDIT: the block and head just got rebuilt, by earl. So I dont know if Copper spray is really needed or not.

civicross

Do NOT use copper spray on a Cometic gasket.

BlueShadow

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by civicross &raquo;</TD></TR><TR><TD CLASS="quote">Do NOT use copper spray on a Cometic gasket.</TD></TR></TABLE>

Phew!!! thanks for clearing that up Ross. People say it's for aded insurance, so I'll just make sure to recheck the studs after a few thousand miles to make sure they dont loosen up. So should I use some ARP moly lube and a little blue loctite n the studs?

civicross

Loctite is not required, but you can if you want. With the new studs its always a good idea to double check them after an hour or two. It takes a bit of time, but its easy insurance against having to replace a headgasket. Typically you only need to do this with brand new studs, as after they have been heat cycled a few times they don't need a retorque. Use the ARP moly lube with them, and follow their torque specs in the instruction sheet, using the pattern in the factory service manual. Using copper spray is a bandaid for not properly surfacing the head and block.

Garcia-Racing

I use copper spray on my cometic headgaskets. Never a problem. Just to fill any small imperfections if the mating surfaces aren't freshly cut.

King-Kong

never needed copper spray, just use a OEM headgasket with ARP head studs and you should be fine. Personally I had problems with my cometic headgakset last year.

mrDFWmechanic

i recommend copper spray to anybody that replaces a headgasket cause i work at a parts store. 5 bucks for some insurance or would u wanna do it again later ?

JoeD427

Old topic,

How do I remove the copper spray from the block and head?

Finest

Small polishing wheel/disc. Just don't make an deep scratches on the surfaces.

JoeD427

thank you

turbotime

i used acetone to remove the copper spray,

it doesnt leave a lot of residue tho, i use a light spray on a MLS HG and a heavy coat on Copper HG

JoeD427

acetone worked great. Thanks man!

Kevin

I've used it in the past but recently i've seen our engine builder assemble 900hp naturally aspirated big blocks with fel-pro mls, no copper spray and have no issues. Although our engines are salt water cooled, they run over 6k rpm for hours with no leaking problems. I guess its good insurance on a motor that might not get taken apart every season.

rudebwoy

iTrader: (1)

the copper spray you speak of, is it the type that is used on brake pads as anti squeel? I got a can here but it does not dry its always tacky I use it for most thread lube, and brake pads

CoreyR

no its not the same stuff, copper spray is copper spray. its gold colored. the stuff your using is blue right?

heres what the copper spray can looks like:

rudebwoy

iTrader: (1)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by CoreyR &raquo;</TD></TR><TR><TD CLASS="quote">no its not the same stuff, copper spray is copper spray. its gold colored. the stuff your using is blue right?

heres what the copper spray can looks like:

</TD></TR></TABLE>

no its copper color. and called copper spray. but its German, I cant get the permatex stuff here

CoreyR

well if its copper and called copper spray then its probably the same stuff.

the **** we use for brakes is blue but it goes on the backs of the pads and its to stop them from chattering on the caliper.