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6.5L Diesel Engine Discuss the 6.5 GM diesel engine & associated components. Automatic transmission questions & problems belong in the 4L80/85 - 4L60E - 6L90 Transmission Forum

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Old 06-30-2019, 01:28 PM   #11 (permalink)
DieselPro
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IAT's is the temp right before the intake manifold. The turbo itself generates most of the heat. With every degree of temp that you reduce with your ram air the actual IAT will reduce about the same just one degree. So even with a scoop the actual drop in temps is going to be very little. Turbo heat is from compression of the air itself and a small amount from the heat that's being stored in the housing. I'd suggest fabricating a heat shield out of stainless between the compressor housing and the turbine housing. A stainless pot pan from your wife's kitchen should work. No insulation would be needed just air space. A direct air filter inlet in the grill should provide the air supply. Someone here has used side louvers as a more practical source for outside air.

Do the pan over the exhaust housing mod.

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Old 06-30-2019, 03:11 PM   #12 (permalink)
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Quote:
Originally Posted by jnlperformance View Post
BEFORE I go off and do something this 'radical'... figured I'd get some opinions.

I like it... but... I dont. It's not as conservative as my original idea, but without doing something similar to what dieselolds did... well, there it is.

It WILL drastically reduce iat(s)... and for the time being I may just have to deal with it...

My original idea was to have the filter housing fit between the turbo and intake over the valve cover but without intake modification... it's not possible for it to fit.

On the bright side (because that setup would be very temporary) I can utilize the same hole in the hood and install a velocity stack as originally intended... then a hood scoop over it...
What are your IAT now?

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Old 06-30-2019, 10:20 PM   #13 (permalink)
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Bahahaha that was great.

Iats now (or were) are well over 200?. I forgot. Id have to look at some of my older gmtd snapshots. Had the oe intake (94 not k47) and then they skyrocketed when I pulled it (of course)

What I do know is that it's getting external bay air for sure. Much lower.

Very happy with the result. ing now

Will figure the new iats later on.

Happy upcoming 4th everyone!!!
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Old 06-30-2019, 10:21 PM   #14 (permalink)
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The difference was absolutely fantastic!! Major difference. Very very.... very happy...

Went to go eat... drive around town a bit... good times!
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Old 06-30-2019, 11:37 PM   #15 (permalink)
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Originally Posted by Oregonnovaguy View Post
How about this look:
That abomination would have to have a Texas license plate on it! LOL
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Old 07-01-2019, 06:50 AM   #16 (permalink)
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Quote:
Originally Posted by jnlperformance View Post
The difference was absolutely fantastic!! Major difference. Very very.... very happy...

Went to go eat... drive around town a bit... good times!
Looks like you making good progress. Keep up the good work.
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Old 07-01-2019, 12:29 PM   #17 (permalink)
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I like the stock cold air intake.

K47 of course.
The 94 stock filter is kinda restrictive.
Keep the acorns out of the intake behind the passengers turn signal.
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Old 07-01-2019, 02:05 PM   #18 (permalink)
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When r ya getting stacks?
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Old 07-02-2019, 06:25 AM   #19 (permalink)
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Quote:
Originally Posted by Tommygunner View Post
When r ya getting stacks?
For the intake or exhaust?

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Old 07-02-2019, 12:37 PM   #20 (permalink)
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Quote:
Originally Posted by guybb3 View Post
For the intake or exhaust?

It DID cross my mind to have a 180 pipe out of the hood vs the downpipe... but im not there yet. Egts dont call for it and I'm already running a straight shorty (ends at the rear of the pass. Door)

This was a strategic and temporary move; a means to an end... I have some body work & basic maint. to do to the ole turd ferguson from when my wife got hit by some idiot. So I needed to accomplish this before I started tearing it down as the furgeson is the primary mileage collection tool for the time being, but that's about to change

The end (and permanent) result will be the flush mount velocity stack covered by a hood scoop. The velocity stack will be flush when the hood closes, but not attached to the hood. No flex hose (I hate that stuff) and the scoop will cover the larger 6in hole (for the stack) and will be the only item attached to the hood.

...and another item it accomplished... speaking of stock intakes and grill mount intakes. I live in one of the lowest points in the entire region. When it floods, it floods. I've had issues before when the water crossings get to the bumper/grill depth (which is basically every time I want to go to the store when it floods) I never took in too much water, not enough to damage anything but most definitely enough to be of concern.

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