Lets see you custom Intake horns

nothin specail. just painted the stock one. ive always heard after market ones arnt worth the money but idk...

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No. It is 3" mandrel bent SS welded to a machined flange. I counterbored the flange opening so the pipe would fit snug inside of it for a better fit and finish. For $60.00 I made out pretty good.
 
ride42 said:
And my answer to that is-Better air flow=better air flow...
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And how does a different air horn help improve flow through the grid heater.... which is where the restriction really is?
 
MD-LUCKY said:
And how does a different air horn help improve flow through the grid heater.... which is where the restriction really is?
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Next time you have your air horn off look down inside of it. Look how the bends are and where the bolt castings are. Now look at a 3" mandrel bent pipe (such as mine and many others) and tell me that won't free up some air.

True, the grid heaters offer a restriction also but the air should be in a vertical drop by then somewhat slicing it's way through the grid. But hopefully with the less restrictive pipe and smoother bends the air should be at a higher velocity and overcome some of the restriction. Just the way that I've always looked at it. Now if it wasn't winter and I lived in a warmer climate I'd get rid of the grid in a jiffy and then let the air worry about the real restriction. The head.

OEM air horns work.
Aftermarket air horns work better
Aftermarket air horns with a grid delete work best.
 
ride42 said:
Next time you have your air horn off look down inside of it. Look how the bends are and where the bolt castings are. Now look at a 3" mandrel bent pipe (such as mine and many others) and tell me that won't free up some air.

True, the grid heaters offer a restriction also but the air should be in a vertical drop by then somewhat slicing it's way through the grid. But hopefully with the less restrictive pipe and smoother bends the air should be at a higher velocity and overcome some of the restriction. Just the way that I've always looked at it. Now if it wasn't winter and I lived in a warmer climate I'd get rid of the grid in a jiffy and then let the air worry about the real restriction. The head.
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I see where you're thinking is, but we should be more concerned about Volume (and Density) of charge air than velocity. If you take a fire hose, connect it to a garden hose, then connect that to a spray nozzle that is held halfway open, where is your greatest restriction? Now replace the garden hose with another fire hose, but leave the nozzle in place... Same diff.

ride42 said:
OEM air horns work.

Aftermarket air horns with a grid delete work best.
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Aftermarket air horns that are pre-tapped for water/meth or for a boost gauge are handy.. And some of them look neat. But the benefits pretty much end there.
 
Don't care if I gained any thing or not, I like the looks...
 

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MD-LUCKY said:
And how does a different air horn help improve flow through the grid heater.... which is where the restriction really is?
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the grid heater is not the restriction... the cylinder head is the restriction.

the air horn doesn't hurt... it helps most on the 3rd gens. the grid heater might net you a 2hp improvement
 
Forrest Nearing said:
the grid heater is not the restriction... the cylinder head is the restriction.

the air horn doesn't hurt... it helps most on the 3rd gens. the grid heater might net you a 2hp improvement
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I recently removed my grid heater delete spacer and reinstalled the heater. and with my motor and all teh goodies installed I gained 200 degrees on the egt and the turbo spooled close to 150 rpms later. just by reinstalling the heater. so the next weekend I took the heater back out and the temps went down and the turbo spools faster again. so there is a lot of restriction with the heater.
 
Anybody centered the intake between cyl 3 and 4? I think I remember seeing someone doing it on the side once. Can't remember for sure.
 
rpainter said:
I recently removed my grid heater delete spacer and reinstalled the heater. and with my motor and all teh goodies installed I gained 200 degrees on the egt and the turbo spooled close to 150 rpms later. just by reinstalling the heater. so the next weekend I took the heater back out and the temps went down and the turbo spools faster again. so there is a lot of restriction with the heater.
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I've had the heater out of my 98 and also my previous '04... I didn't see any difference
 
the heater grid on some software levels and old part numbers was used in a backwards attempt as on emissions device/control...by heating the air before it got into the cylinder it was a cheap egr/air warmer...purpose was to reach operating temps alot quicker than without it. could explain your gains in egt's...just a thought.
 
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