Need a new block - page 3 - IDI Engine - VWDiesel.net The IDI, TDI, and mTDI source.

• #30 by fatmobile on 30 Aug, 2012 20:20
•  I have never even stripped out or cracked 11mm bolts when reusing the stock bolts
   and have put a VNT-15 with the vanes locked closed on a 1.5L block with ARP headstuds.
   Boosted to 35 with the great backpressure of a VNT working against it,.. a couple times. With no adverse effects.
  
  Sidenote: I replaced the stock headbolts 1 at a time withy ARP headstuds and was worried it might leak but it worked great.
  
  
   My TD Golf by comparison has 12mm raceware headstuds ,... oil seeping from the front and I retorqued them after seeing coolant coming up around the threads of a stud.
   
   I think Andrew just got a bad 11mm block.
   
• #31 by rs899 on 31 Aug, 2012 04:29
• I am about to try pushing my luck on an 11mm block and factory bolts.  I have done 3 or 4 in the past with no issues.  Ignorance used to be bliss 20 years ago (before the internet).
• #32 by libbydiesel on 31 Aug, 2012 06:49
• Quote from: fatmobile on 30 Aug, 2012 20:20

  I think Andrew just got a bad 11mm block.

  
  I guess that's the easy out.  Yes, it was a bad 11mm bloc, IMO they all are...  It was during a head gasket change, so I didn't have the block magnafluxed, but I did clean the deck surface meticulously and inspected around all the bolt holes with a light and magnifying glass.  I prepped each bolt hole meticulously and torqued the ARP studs to spec.  All for naught.
• #33 by R.O.R-2.0 on 31 Aug, 2012 10:10
• Quote from: fatmobile on 30 Aug, 2012 20:20

  I have never even stripped out or cracked 11mm bolts when reusing the stock bolts
   and have put a VNT-15 with the vanes locked closed on a 1.5L block with ARP headstuds.
   Boosted to 35 with the great backpressure of a VNT working against it,.. a couple times. With no adverse effects.
  
  Sidenote: I replaced the stock headbolts 1 at a time withy ARP headstuds and was worried it might leak but it worked great.
  
  
   My TD Golf by comparison has 12mm raceware headstuds ,... oil seeping from the front and I retorqued them after seeing coolant coming up around the threads of a stud.
   
   I think Andrew just got a bad 11mm block.
   
  

  
  i boosted up to 35 many a time..
  
  its not till i boosted it up and left it there for a mile or so, that it popped..
  
  popped somewhere north of 40psi.. 30psi is at like 4'oclock on my gauge, well, i had it almost wrapped back to the 0 peg.. lol.
  
  blew a chunk clear out of the head gasket..
  
  and the #4 end of the block was TRASHED..