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Old 01-19-2009, 10:10 AM
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cat delete=turbo boost=blown gaskets?

since removing the cat frees up more boost wouldnt it bring more stress on the head gaskets?
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Old 01-19-2009, 05:38 PM
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Deleting the cat doesn't free additional boost, it may allow the turbo to spool quicker since there is little (if any at all) back pressure on the turbine. Stress on the head gaskets is created by cylinder pressure, add NO2 or propane would cause problems.

On a stock truck, just deleting the cat doesn't automatically mean you just increased cylinder pressure.
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Old 01-19-2009, 06:31 PM
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thank you sir btw what kind of lift kit and tires u got there....?
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Old 01-19-2009, 06:46 PM
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heavyassault pretty much cleared that up. guys run programmer and never have problems with the head bolts. some trucks are different. I ran a programmer, water meth, exhaust, all the bolts on and never had a problem. i found a dealer that was cool enough to replace them with ARP head studs though
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Old 01-19-2009, 06:50 PM
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ive been told by a few mechanics that back pressure is necessary
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Old 01-19-2009, 07:03 PM
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what about the guys with hood stacks? granted they all have alot more work done but still, i ran around with just my downpipe and the truck wasnt affect at all. stumps exhaust just lays under the truck there LOL
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Old 01-19-2009, 09:08 PM
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Quote:
Originally Posted by bockhold View Post
ive been told by a few mechanics that back pressure is necessary
The turbo typically creates the "backpressure" nesssary for a good running engine, its actually a flow path the is more of the concern. If you have ever taken a hose and created a suction on it, and the hose maintains the flow? Thats what exhaust systems do and its called scavanging, so dumping right after the turbo isnt always going to yield more power.
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Old 01-19-2009, 09:39 PM
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As far as the back pressure I thought the turbo kind of created it's own, but I know that spool is affected. If you put a huge downpipe on the exhaust has an easier exit so less will be used to turn the wheel and spool the turbo.
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Old 01-20-2009, 05:32 AM
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Originally Posted by f350powerstroke View Post
thank you sir btw what kind of lift kit and tires u got there....?

DR/ICON 4.5" with rear 5" blocks. Those are 325/65/18 MT ATZs on Weld wheels. I have since switched to Pro Comp Xtreme ATs in 35x12.5 flavor. I got to update those pics.
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