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Heat Shield for the BHAF

jlwelding
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MnTom

MnTom

Posted
Posted

Does it really do much good? I am just curious since I have run a BHAF for over 100,000 miles without one and have not had any indication of a problem.

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Mopar1973Man

Mopar1973Man

Posted
  • Owner
Posted

Tell you the truth after getting the measurement from ISX there is only about +2*F difference over outside temps while rolling. As for JL_Welding you did that right by backing up the the plate with nuts so the top nuts are nearly flush...

ISX

ISX

Posted
Posted

Well, it actually changes depending on a bunch of factors. Below freezing, it is basically the same temp as ambient. As it gets warmer, you start to see a change. I think around 70F ambient I was seeing a 5-10F difference for temps on the air filter. At 90F I am thinking 10-15F difference. Now towing actually makes it spike a little, getting up to 25F difference. Not so much in the winter but at 70F ambient was where I was seeing 20-25F difference. Running a constant high EGT makes the exhaust manifold hotter and it radiates to the air filter. My temp probe was zip tied near the front/top of the BHAF.

  • Like 2
flagmanruss

flagmanruss

Posted
Posted

Thanks for the pictures. I'm playing with my BHAF install now... I don't seem to have quite as much room as you do. I think SOMETHING is needed to stabilize the filter. My problems are entirely that my experimental set up is too floppy.

MnTom

MnTom

Posted
Posted

Hm. I have not had any issues with the EGTs getting very high even towing. About the most I have seen was about 1250* for brief periods and about 900* under normal towing. Maybe the turbo I have (HX35) moves enough air?

dorkweed

dorkweed

Posted
Posted

I love your "high-tech" shield there Mike!!!!:thumb1::thumb1: Heck, if I didn't have any "handy" bungees, I would've used "duct tape"!!!!:lmao2::lmao2:On a serious note, on my Fram Boost 2 intake (rebadged AEM Brute Force) I think the only thing the heat shield does is keep the "spray" off the filter element when driving in rain or wet roads or wet snow etc.!!

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Mopar1973Man

Mopar1973Man

Posted
  • Owner
Posted

I love your "high-tech" shield there Mike!!!!:thumb1::thumb1: Heck, if I didn't have any "handy" bungees, I would've used "duct tape"!!!!:lmao2::lmao2:

It might be a Redneck setup but it works... The bungee I added to keep the filter from banging around under the hood. Washboard roads really do make it hop... :doh:

Hm. I have not had any issues with the EGTs getting very high even towing. About the most I have seen was about 1250* for brief periods and about 900* under normal towing. Maybe the turbo I have (HX35) moves enough air?

Funny you should mention that. Just for testing and fun I had a short 3-4 mile grade at 6% to climb over with the TT cruise set at 60 MPH and it would hold 1,100*F EGT's at about 32 PSI boost with the Edge Comp wide open (5x5)
  • 7 years later...
leety

leety

Posted
Posted
On 3/25/2011 at 10:34 AM, Mopar1973Man said:

Here is my version... post-2-138698176677_thumb.jpg post-2-138698176668_thumb.jpg post-2-138698176663_thumb.jpg

I there a pattern for this somewhere?  I can't seem to fit my BHAF into the K&N shield.  I would like to make one of these but a pattern would sure be nice.  I saw a link to one somewhere on this site but the link was not working.

leety

leety

Posted
Posted
Just now, Mopar1973Man said:

Mine was made from an old Idaho road sign.

That's fun.  I'm sure it made your truck go faster.

 

I don't have good tools for aluminum.  I may do an experiment and use your template to cut up a fire-resistant trash can and put some fire proof mat on the side where the turbo is.

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Mopar1973Man

Mopar1973Man

Posted
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Posted
1 minute ago, leety said:

I don't have good tools for aluminum.

 

Jigsaw... That's all I used.Then went to a friends house to use his brake to fold the 90* angle. Sheet metal trash can should be interesting...

leety

leety

Posted
Posted
2 minutes ago, Mopar1973Man said:

 

Jigsaw... That's all I used.Then went to a friends house to use his brake to fold the 90* angle. Sheet metal trash can should be interesting...

Actually it's a plastic trash can.

https://www.amazon.com/gp/product/B007G61OJM/ref=oh_aui_detailpage_o00_s00?ie=UTF8&psc=1

 

with some heat mat applied on the turbo side.

https://www.ebay.com/itm/Heat-Shield-Mat-Belly-Fairing-Motorcycle-Insulation-for-hood-Fiberglass-Cotton/192390551180?ssPageName=STRK%3AMEBIDX%3AIT&_trksid=p2057872.m2749.l2649

 

 

leety

leety

Posted
Posted
3 minutes ago, Mopar1973Man said:

You've got my attention. I'd like to see this go through and be tested with summer heat. You'll be the first with a plastic heat shield. 

Sounds like a fun thing to try for sure.

  • Owner
Mopar1973Man

Mopar1973Man

Posted
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Just on the side of cautious nature, I would keep a fire extinguisher in the truck. Keep an eye on it as the weather warms up. If it starts to deform you'll most likely call it a fail. I'm still curious if it can be done with that kind of heat on that turrbine.

 

 

leety

leety

Posted
Posted
Just now, Mopar1973Man said:

Just on the side of cautious nature, I would keep a fire extinguisher in the truck. Keep an eye on it as the weather warms up. If it starts to deform you'll most likely call it a fail. I'm still curious if it can be done with that kind of heat on that turrbine.

 

 

For sure.  A fire extinguisher is a must.  How hot does the turbine housing get?  The factory air box was aplastic right?

 

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