Can I damage my engine by running open headers?
05-20-2004 | 08:20 PM
#5
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Joined: Jan 2002
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From: Valley of the Sun
Car: 82 Z28
Engine: Al LT1 headed LG4 305
Transmission: TH350
Axle/Gears: 3.73 posi with spacer
i heard that it burn valves??? true?
Again not likely.
The only way you can ruin valves like that is if you run a really short huge pipe header. It happens when cold air or water hits the exhaust valve and warps, burns it up or damages it.
With any headers that you could run in a 3rd gen you will not have any problems
05-21-2004 | 12:35 AM
#6
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Joined: Oct 2002
Posts: 9,067
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From: Saskatoon, SK, Canada
Car: '83 Z28, '07 Charger SRT8
Engine: 454ci, 6.1 Hemi
Transmission: TH350, A5
Axle/Gears: 2.73 posi, 3.06 posi
It will be fine. Guys have been doing it for 40 or 50 years now, since the small block chevy was invented.
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05-21-2004 | 01:27 AM
#8
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From: Pitman, NJ
Car: '89 IROC-Z
Engine: Canfield 195 headed 358ci
Transmission: TH350, Art Carr 9.5"
Axle/Gears: 3.92 Dana 44
Originally posted by White91GTA
if you are not careful though, you will float the valves
if you are not careful though, you will float the valves
05-21-2004 | 01:46 AM
#9
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From: Oklahoma
Car: 1991 Trans AM GTA
Engine: 5.7L TPI
Transmission: 700R4
Originally posted by 88IROC350TPI
Please explain that one....
Please explain that one....
05-21-2004 | 10:17 AM
#10
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From: heartland
Car: 89rs (previous 2.8)
Engine: 406
Transmission: 700r4 (for now)
Originally posted by White91GTA
that is just what i have heard, i think it is due to the lack of backpressure. you have to have a little backpressure in order for the engine to function properly
that is just what i have heard, i think it is due to the lack of backpressure. you have to have a little backpressure in order for the engine to function properly
Myth!!!
I could see floating the valves if you have no tach.....maybe not hear the motor truley due to exhaust noise.....
05-21-2004 | 10:42 AM
#11
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From: Chasing Electrons
Car: check
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Re: Can I damage my engine by running open headers?
Originally posted by Nightrider350
Can I damage my engine by running open headers?
Can I damage my engine by running open headers?
RBob.
05-21-2004 | 10:45 AM
#12
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From: Charleston, SC
Car: 91 Camaro Vert
Engine: 02 LS1, HX40
Transmission: 2002 LS1 M6
Originally posted by White91GTA
that is just what i have heard, i think it is due to the lack of backpressure. you have to have a little backpressure in order for the engine to function properly
that is just what i have heard, i think it is due to the lack of backpressure. you have to have a little backpressure in order for the engine to function properly
1. the valve float myth you heard is outright stupid. lets pretend that it was true... so you're saying backpressure the kind that would push the valve OPEN is going to help it close?? think about it.
2. BACKPRESSURE = BAD! BACKPRESSURE = BAD! BACKPRESSURE = BAD! BACKPRESSURE = BAD! BACKPRESSURE = BAD! BACKPRESSURE = BAD! BACKPRESSURE = BAD! BACKPRESSURE = BAD! BACKPRESSURE = BAD! BACKPRESSURE = BAD! BACKPRESSURE = BAD! BACKPRESSURE = BAD! BACKPRESSURE = BAD! BACKPRESSURE = BAD! BACKPRESSURE = BAD! BACKPRESSURE = BAD! BACKPRESSURE = BAD! BACKPRESSURE = BAD! BACKPRESSURE = BAD! BACKPRESSURE = BAD! BACKPRESSURE = BAD! BACKPRESSURE = BAD! BACKPRESSURE = BAD! BACKPRESSURE = BAD! BACKPRESSURE = BAD! BACKPRESSURE = BAD! BACKPRESSURE = BAD! BACKPRESSURE = BAD! BACKPRESSURE = BAD! BACKPRESSURE = BAD! BACKPRESSURE = BAD! BACKPRESSURE = BAD! BACKPRESSURE = BAD! BACKPRESSURE = BAD! BACKPRESSURE = BAD! BACKPRESSURE = BAD! BACKPRESSURE = BAD! BACKPRESSURE = BAD! BACKPRESSURE = BAD! BACKPRESSURE = BAD! BACKPRESSURE = BAD! BACKPRESSURE = BAD! BACKPRESSURE = BAD! BACKPRESSURE = BAD! BACKPRESSURE = BAD! BACKPRESSURE = BAD! BACKPRESSURE = BAD! BACKPRESSURE = BAD! BACKPRESSURE = BAD! BACKPRESSURE = BAD!
there is zero need for backpressure.
valves dont need it
the engine doesnt need it
EGR doesnt need it.
now there IS a diff between exhaust gas velocity depending upon pipe size... a smaller pipe allows higher speed at low RPM, helping TQ... the size is smaller, but its NOT backpressure that helped the TQ.. its the more efficent pipe for the lower volume of air.
backpressure causes pumping loss... thats all it does.
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