Fitting a Metal HG - How?

[elton]

Hi guys,

Just got a speedvision 1.6mm metal HG, 5-layered steel. Question is, is it necessary to take off the rivets holding the gasket together, fitting them one by one onto the block with a layer of copper spray in between each layer?

Another question would be ; What difference is that 1.6mm one compared to three pieces of 5efe metal headgasket (0.5mm each), and two pieces of trd 0.6mm gaskets being sandwiched together(taking into consideration we're comparing this to a 1.2mm metal HG)?

 

[Skalabala]

Just make sure you skim head and block.
Good question you have there. Sure it will be the same if you use copper spray on the rite way?

 

[350ep70gr]

Dont remove the layers if are fixed together. Just put it in as one piece.I put the metal one on completly dry. Just make sure both surfaces are fresh,straight and extremly clean.No need of copper or sealant or oil etc..

Chris

 

[elton]

thanks guys for the reply.

Any answer on the second question?

 

[Skalabala]

I know a lot o people (regarding 7A/4AGE engines) use the 7A gasket (0.6mm) and just put two on whatever build they are doing.

 

[350ep70gr]

thanks guys for the reply.

Any answer on the second question?

Just a guess..maybe steeal material is different or different crush patern.

I know a lot o people (regarding 7A/4AGE engines) use the 7A gasket (0.6mm) and just put two on whatever build they are doing.

Using 2 hg of 0.6mm to achive a 1,2 mm will be more forgiving if both surfaces are not totaly perfect. Thats the reasons most manufactors do them multi-layer and not lets say single layer of 1,2mm wich would be easier and faster on terms of production. Single layer (copper) i have made by my own tho.. works for 5-6 years now at respectable boost with no issues at all.

Chris

 

[Skalabala]

Nice Chris
How did you make the HG?
Buy a copper 1.2mm sheet clamp down on a cut able surface in CNC milling and away you go?
Or water jet?

 

[350ep70gr]

Yea correct.A foil of 2mm (5ehfe) drawing the image of and old gasket, hand cut ...heated evenly till it change color and rapid cooling to water or oil.


Chris