Mace MLS Head Gasket size for Holden VT L67 3800?

[VT CAL INT]

Hi Guys,

just wondering what is the difference between the 2 thicknesses of the Mace MLS Head gasket:
https://www.maceengineering.com.au/epages/shop.sf/en_AU/?ObjectPath=/Shops/mace/Products/GSK606

Don't know which one to order - 0.051 inch or 0.063 inch?

Cheers

 

[Immortality]

I believe .063" is stock so using the .051" will see a slight increase in CR.

 

[MACE]

Hi VT CAL INT,

Thanks for your enquiry.

To build on immortality's answer, stock ecotec L67s run a head gasket thickness of approximately .062 thou. Running a thicker gasket will decrease compression, while running a thinner gasket will increase compression. For every .006" change in gasket thickness you will add or subtract approx .1 points of compression.

Hope this helps.

If you have any more questions please don't hesitate to ask.

Kindest Regards,
Steve

 

[VT CAL INT]

Thanks Steve,
- so a decrease in gasket thickness (going the 0.051 inch gasket) will increase combustion pressure, and if going the 0.063 inch gasket will keep it around stock (maybe decrease pressure by the slightest).

This is probably a stupid question to most, but, which one is better? when should I pick the thinner gasket over the thicker? any performance gains?? do I choose based on what mods i've got?

Thanks
Matt

 

[MACE]

Thanks Steve,
- so a decrease in gasket thickness (going the 0.051 inch gasket) will increase combustion pressure, and if going the 0.063 inch gasket will keep it around stock (maybe decrease pressure by the slightest).

Correct.

This is probably a stupid question to most, but, which one is better? when should I pick the thinner gasket over the thicker? any performance gains?? do I choose based on what mods i've got?

To keep things simple, stick with the stock thickness gasket. While the thinner gasket will make more power, it will increase the likelihood of the engine pinging. Therefore you need to have a good understanding of your current application and requirements etc.

If you have any more questions please don't hesitate to ask.

Kindest Regards,
Steve

 

[whipple v6]

Hi Guys,

just wondering what is the difference between the 2 thicknesses of the Mace MLS Head gasket:
https://www.maceengineering.com.au/epages/shop.sf/en_AU/?ObjectPath=/Shops/mace/Products/GSK606

Don't know which one to order - 0.051 inch or 0.063 inch?

Cheers

hi, try to find out compress thickness of s/charge gaskets,,i thinh it is .040 inch,,,i would run the .051 gaskets ,,but do your homework and find out,,,and use arp head stud kit

 

[MACE]

Would definitely want to use these gaskets with a quality bolt or stud kit for sure.