Race Ware head bolt studs and MLS gasket - IDI Engine - VWDiesel.net The IDI, TDI, and mTDI source.

• Race Ware head bolt studs and MLS gasket by RustyCaddy on 11 Feb, 2011 07:14
• Anyone know if the 50 ft/lb final torque specs for Race Ware studs is enough to crush and get a good seal with a MLS head gasket?
  
  Folks seem to trust ARP to do the job but ARP seems to be able to take a lot more torque.
• #1 by rodpaslow on 11 Feb, 2011 08:08
• Bently states up to I think 44 ft.lbs and then another 1/4 or 1/2 turn (not sure which) but I'm sure 50 is not enough.  My arp are torqued to 110 ft.lbs and no issues.  I only have about 10 k on it since, but I haven't had any problems with the mls at 110.
• #2 by R.O.R-2.0 on 11 Feb, 2011 08:29
• 50 is prolly enough for a fiber gasket, but i doubt a metal gasket is gonna seal at 50 ft lbs..
• #3 by truckinwagen on 11 Feb, 2011 09:16
• the torque discrepancy comes from the different thread pitches.
  
  50 should be fine for a fiber gasket with low boost.
  
  -Owen
• #4 by 745 turbogreasel on 11 Feb, 2011 11:54
• ^ This
  100 Ft/ lb on Raceware will most likely damage your head.
• #5 by RustyCaddy on 11 Feb, 2011 19:34
• When ARP are torqued to 110 ft/lbs to crush a MLS thats about 30% over spec (i am assuming the ultra-toque stuff is being used...if not the comparisons get pretty shaky); so going to 65 ft/lbs with Race Ware would be about 30% over for them too.  i guess that 65 ft/lbs would be worth a try but Dr. Diesel in another thread went to 70 ft/lbs with Race Wares and thought he might have over torqued them and ended up pulling those studs...not much room for error.
  
  i haven't compared the pitch between ARP and Race Ware side by side but they look really close.
  
  Thanks guys for weighing in...that helps a lot.
  
  And what the h*ll are head "bolt" studs in the thread topic anyways