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View Full Version : Max boost for 6.2


DWitcher
04-17-2005, 06:08 PM
Ok, I have a chance to buy a 6.2 powered Sub which would work out awsome for a family rig. I met the guy and we test drove the Sub and it builds 17psi which has me a little skeerd. Now this thing has a Banks Sidewinder kit with a fairly fresh engine installed. How long do you 6.2 guys think this poor engine can handle that kind of boost. :eek: :confused:
Any advise is why I'm here. Thanks waytogo

joez
04-17-2005, 07:04 PM
As long as the EGT's dont go through the roof, i bet it would be alright. Thats a lot of boost for a non-intercooled 6.2.

mudnmyvayne
04-17-2005, 10:40 PM
IIRC 10-12 is about all you want to shoot for without internal mods.(different compression mostly)

MNorby
04-17-2005, 10:55 PM
From everything I have read and researched stock you don't wanna run more than 12 psi to avoid head gasket and head failure unledd you stud the head and girdle the caps. The computer controlled 6.5s are set to set a check engine if boosts over 12 psi and we made it do that when we reversed the vacuum lines on Joe's 94 6.5

DWitcher
04-18-2005, 12:12 AM
Thats kinda what I thought. I'ff I buy this rig I will for sure limit the Boost with a waste gate adjustment. From what I've herd the 6.2 is OK with 10 to 12 psi. I'll need to make this thing bullit proof due to the fact that my Wife is gonna drive-abuse this thing every day. I've have a 90 gas Sub now that passes everything but a gas station and with gas here at $2.60 a gal FREE diesel is looking better. Thanks for the replys and I hope to hear more waytogo

DWitcher
04-18-2005, 12:14 AM
BTW I have a nice 6.5 short block that I'll swap in if this one goes south.

MNorby
04-18-2005, 09:54 PM
you can buy a spring adjustable wastegate control for those enginse from http://www.ssdieselsupply.com/index.html

will
01-18-2007, 09:29 AM
Mine is an unmodified Banks install with the screw turned 1/4 turn per their instructions. I get a max of 12psi and 950-1,000F. He has the fuel turned up too much--turn it down a bit after you get it.

You don't need a wastegate as it doesn't spool that quickly. Your initial scoot from a stop is courtesy of that 22:1 compression and if you'll see about 5psi ~650F most of the time if you drive aggressively, but sanely. To get it to 12psi 1,100F (Banks' published max EGT) you are going to have the pedal to the floor and the engine wound out or be pulling an 8% hill with your trailer.

Missy good wench
02-28-2007, 10:39 AM
I ussume this rig has pyro and boost gauges.
Just educate the missus to keep the thing out of the 'CRISPY ZONE'
1000F is max and then I prefer slightly lower say 850 to 900.
If it will make 17 its been turned up for sure.
An intercooler would be in order .
The Banks setups for the 6.2 dont use a wastegate. the system is designed so the small turbo simply cant push any more air than it was designed as long as the setup instructions are followed.

The boot on the pedal is the best control and an eye on the gauges.