Cracked DS header

oc192

Member
Joined
May 18, 2010
Will a cracked driver's side header cause high BLMs and 10 in of vacuum at idle?

Thanks
 
Will a cracked driver's side header cause high BLMs and 10 in of vacuum at idle?

Thanks

yes it will cause high blm's as far as the vacuum dont know. it could be low because the motor is loading up with fuel.
 
ur vacuum shouldnt b affected i had a major crack on the ds header and my vacuum remained the same before and after i welded the crack i would definitely fix that leak though
 
Hi,
As said before, you should fix the leak, but I doubt there will be major mixture changes as a result of any scavanged outside air.
 
ur vacuum shouldnt b affected i had a major crack on the ds header and my vacuum remained the same before and after i welded the crack i would definitely fix that leak though

what he said. Crack in the header will reduce boost and increase boost lag. shouldn't effect vac.
 
Don,

You should get some pics and buy that header if it looks good. I had a badly cracked header for awhile and my BLM's were fine. It might raise them a little, but not to 150.
 
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