Question I've been thinking about:
How does vacuum change as altitude increases? If I run 8 inches at sea level and I take my car to Santa Fe, elevation 7,000 msl, what does my vac gauge read? Is there a formula, does it go down 2%/1000 feet or ???? Lower than 6?
LOL that's because the pressure you are evacuating is less--atmospheric pressure. Previous poster is right. It's about a 50% ratio "roughly" psi to inches Hg. Sea level is just under 15psi in rough figures, and just under 30" Hg. I refuse to think in "bars." And be careful, somethings are inches of WATER. We used to use that all the time in HVAC for gas/ LP pressure, and duct pressure
Wanted to share this with all. Went to a private test n tune Saturday at No Problem raceway this was going to the first pass in my truck since I traded for it in March. Pulled into the water box started a burn out rpm’s never exceeded 6500 rpm according to my data logger. Look at the pictures...
When torquing ARP head studs with flat washers, have you ever felt it feel like it slipped a little? I think I remember a recommendation to not put ARP lube on one side of the flat washer, but don't remember which side.(I figure it is the bottom side of the washer facing the head.) Anybody know...
I have a cam being delivered tomorrow and I forgot to ask for a 1.050 base cir .
Its being shipped with a 1.123 base cir .
With a straight edge ( push rod ) lying on the cam bearings , the number 1 rod clears it .
Cam has .372 lobe lift on both lobes . ( .558/.558 )
Will the lobes extend...
EFI guys I need some help replacing or cleaning my injectors in our 2001 Yukon 6.0L tow pig.
My 2001 Yukon XL 2500 6.0L has 250,000+ miles on the stock injectors. Since the injectors are part of the heart in these EFI motors I was thinking it would be a good/easy tuneup like changing points and...