pyrometer
Elder User
Joined: Jan 2008
Posts: 576
Likes: 0
From: Central Coast CA
same here, ive got the same settings. do you worry about how much boost your pushing? sometimes i wonder if 10psi is hurting my head gasket.
Post Fiend
Joined: Nov 2003
Posts: 21,285
Likes: 15
From: Nutter Fort, WV
With a 7.3 you should be fine to 15 PSI for a max boost pressure.
The stock 6.9 needs to stay around 10 PSI.
Cavitation can get a 6.9 also, it just takes longer to reach the cylinder since the walls are thicker.
All diesels have cavitation issues.
SCA's are the only insurance against cavitation.
The stock 6.9 needs to stay around 10 PSI.
Cavitation can get a 6.9 also, it just takes longer to reach the cylinder since the walls are thicker.
All diesels have cavitation issues.
SCA's are the only insurance against cavitation.
Elder User
Joined: Jan 2008
Posts: 576
Likes: 0
From: Central Coast CA
With a 7.3 you should be fine to 15 PSI for a max boost pressure.
The stock 6.9 needs to stay around 10 PSI.
Cavitation can get a 6.9 also, it just takes longer to reach the cylinder since the walls are thicker.
All diesels have cavitation issues.
SCA's are the only insurance against cavitation.
The stock 6.9 needs to stay around 10 PSI.
Cavitation can get a 6.9 also, it just takes longer to reach the cylinder since the walls are thicker.
All diesels have cavitation issues.
SCA's are the only insurance against cavitation.
I read a really neat article about cavitation that you put a link to on the forum. now i know why i need to pay attention to the state of my coolant and use SCA,s
Elder User
Joined: Jan 2008
Posts: 576
Likes: 0
From: Central Coast CA
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Senior User
Joined: Jun 2004
Posts: 477
Likes: 1
From: florida
you really should get a pyro, i mean yes you can turn the thing up without one but every time you stick your foot into it your at risk, mine has also been turned up and i dont have a pyro, but i never lug my engine and i try to keep the rpms up and try to keep the smoke from being as black if im comming up a mountain, but i know that every time i step on it just to see it cloud traffic out im paying for it at the pump and if i melt my pistons then im really paying for it, but i love to roll up next to people and put the hammer down and see the expressions on there face but i also know that i can damage my engine
Postmaster
Joined: Oct 2005
Posts: 3,724
Likes: 0
From: Clarksburg WV
Thats not really true...the more load there is on the engine, the higher the EGT's are.
Before I turned up my wastegate and had the boost at 7 or 8 psi max, I would max out the pyro going up one of the steep mountains near here and I couldn't even maintain speed. But a few more PSI cleared that up.
With a turbo, if EGT's are too high you can usually add more boost and that will even it out (provided that you aren't maxed on boost already!)
Before I turned up my wastegate and had the boost at 7 or 8 psi max, I would max out the pyro going up one of the steep mountains near here and I couldn't even maintain speed. But a few more PSI cleared that up.
With a turbo, if EGT's are too high you can usually add more boost and that will even it out (provided that you aren't maxed on boost already!)
Postmaster
Joined: Oct 2005
Posts: 3,724
Likes: 0
From: Clarksburg WV
Well like I said, the boost actually helps "cool" the EGT's. Non-turbos may very well be different.
And yeah higher RPM's might help keep the EGT's down because it's moving more air, but that's really only if you're not way into the throttle, because then you'd be putting in more fuel along with more air.
And yeah higher RPM's might help keep the EGT's down because it's moving more air, but that's really only if you're not way into the throttle, because then you'd be putting in more fuel along with more air.
Post Fiend
Joined: Nov 2003
Posts: 21,285
Likes: 15
From: Nutter Fort, WV
If you are going up a hill with your throttle foot on the floor if you drop a gear normally the throttle foot has to come off the floor to keep the RPM's from climbing to the governed limit.
The higher RPM and lighter throttle application drops the EGT's.
If you drop the gear, and still keep your throttle foot on the floor, the EGT's do not drop.
With a turbo, more boost will drop EGT's.
Helps both engines have lower EGT's if you have a cold air intake.
The higher RPM and lighter throttle application drops the EGT's.
If you drop the gear, and still keep your throttle foot on the floor, the EGT's do not drop.
With a turbo, more boost will drop EGT's.
Helps both engines have lower EGT's if you have a cold air intake.