Jump to content


Photo
- - - - -

998 Head Gasket Compressed Volume?


  • Please log in to reply
5 replies to this topic

#1 dantiri

dantiri

    Just On Tickover

  • Noobies
  • Pip
  • 9 posts
  • Location: north hollywood

Posted 05 May 2016 - 05:38 AM

I have a composite gasket CF070L sold as Lucas brand and I'm trying to figure out the compressed volume. Can't find anything on the internet. I measured the gasket , it's 1.45mm thick, but who knows how much it compresses once torqued down... fire rings are egg shaped, so good luck with calculating the volume anyway. any help would be much appreciated!



#2 coopdog

coopdog

    Up Into Fourth

  • TMF+ Member
  • PipPipPipPipPipPipPipPipPip
  • 4,506 posts
  • Location: South Wales

Posted 05 May 2016 - 09:13 AM

It's about 2.8cc crushed

#3 Cooperman

Cooperman

    Uncle Cooperman, Voted Mr TMF 2011

  • TMF+ Member
  • PipPipPipPipPipPipPipPipPipPipPip
  • 23,014 posts
  • Location: Cambs.
  • Local Club: MCR, HAMOC, Chelmsford M.C.

Posted 05 May 2016 - 06:26 PM

When doing c.r. calcs I always use 2.7 cc for a 998.

#4 dantiri

dantiri

    Just On Tickover

  • Noobies
  • Pip
  • 9 posts
  • Location: north hollywood

Posted 05 May 2016 - 08:21 PM

Thanks. I've seen the Payen copper ones which actually specify 2.8 but wasn't sure it was a common number for most 998 gaskets.



#5 Michaelacaby

Michaelacaby

    Starting My Mini Up

  • Noobies
  • Pip
  • 3 posts
  • Location: Virgin Islands
  • Local Club: Michaelacaby

Posted 09 August 2018 - 07:06 AM

The old standard O.E. replacement steel shim gaskets are .018" compressed. I forget exactly what the Mr. Gasket steel shim gaskets squish to, but right in that area.....

#6 Retroman

Retroman

    One Carb Or Two?

  • Traders
  • PipPipPipPipPipPipPip
  • 967 posts
  • Location: Sunny Sabden
  • Local Club: CDMC

Posted 09 August 2018 - 01:03 PM



I have a composite gasket CF070L sold as Lucas brand and I'm trying to figure out the compressed volume. Can't find anything on the internet. I measured the gasket , it's 1.45mm thick, but who knows how much it compresses once torqued down... fire rings are egg shaped, so good luck with calculating the volume anyway. any help would be much appreciated!

 

   A payen copper gasket fire-ring measures 0.030" crushed [off] which works out at 2.7 to 2.8 cc

 

Yours is quite thick at 1.45mm (0.057") I have just measured a composite one at 0.050" it certainly won't crush to 0.018"

 

I would calculate at 3cc [near enough for lads]






0 user(s) are reading this topic

0 members, 0 guests, 0 anonymous users