Can I upgrade the air filter on my '95 3500 from the rectangle filter to the later model round filter. If so what parts do I need to scrounge up? Thanks..

i used a sch 30 street 90 and clamped the socket end in to the rubber boot comming from the turbo and then clamped the street end on to a k&n filter then took a piece of sheet metal wrapped it around the filter and screwd it to the fender works great and cost was free for me seeing as im a plumber all i did was purchase the k&n if you would like a pic PM me hopefully i explained it so its understandable

:nopics:

:nopics:

well said or should I say well pictured.

here the pics i dont usally run my truck with the sheet metal but put it back on to show every one my idea i originaly thouht it used a sch 30 street 90 but i used 2 sch 30 st 45's its a little longer of a sweep

WHere's all that oil coming from on the turbo? My 94 was similiar until i discovered a 2" split under my clamp.

clue less never really looked into it guess i should my luck it wouldnt be as simple as the clamp it uses almost 2 quarts between oil changes and i think that is accepable

Where are you routing your blowby hose coming from the valve cover? I see it's not attached to the turbo intake. Oh yeah, how much performance and milage improvement did you see after this mod? And one more question....Did it make your turbo sound like a jet engine? (I hope so):ro)

Where are you routing your blowby hose coming from the valve cover? I see it's not attached to the turbo intake. Oh yeah, how much performance and milage improvement did you see after this mod? And one more question....Did it make your turbo sound like a jet engine? (I hope so):ro)

i am routing the blow by hose down to the ground i originaly did that when i had the K&N clamped right to the turbo but since modified that and just left the hose i dont see it being a problem though it looks weird walking up to the front of the truck and seeing smoke comming from next to the tire

as for mileage never checked before but now im getting 14 mixed driving with a somewhat heavy foot and perfomace i did notice a slight improvment worth doing in my opinon the turbo whine was much more noticable after i modifiyed the intake never noticed it much before and im running a straight pipe with flowmaster X-over and dpipe i had a 99 6.5 td with the same mods and the turbo screamed sounded great i dont understand why this one isnt doing the same i have 10psi peak boost i attribute it to the different style turbo on my 93 vs my 99 turbo

here the pics i dont usally run my truck with the sheet metal but put it back on to show every one my idea i originaly thouht it used a sch 30 street 90 but i used 2 sch 30 st 45's its a little longer of a sweep

What K&N model number filter is that?
Did you pull the intake guts out of that fender?

What K&N model number filter is that?
Did you pull the intake guts out of that fender?


i have no idea what the K&N # is i went to auto zone and looked it up in the book sorry i dont know it

yea i pulled the snorkle out i was originaly using the stock box with the snorkle removed then when i upgraded to the K&N never bothered to put it back i have done this to both of my trucks and havent had any problems

i have no idea what the K&N # is i went to auto zone and looked it up in the book sorry i dont know it

yea i pulled the snorkle out i was originaly using the stock box with the snorkle removed then when i upgraded to the K&N never bothered to put it back i have done this to both of my trucks and havent had any problems

Okay, What model truck did you use to look it up?

i belive 97 and newer had the round elements i used my 99 6.5 td burban for reference

i belive 97 and newer had the round elements i used my 99 6.5 td burban for reference

I'll check it out.
btw, you don't have that burban in your signature

i wish it was still in my sig i lost it to a tree i sure do miss it

Hello everyone,

I'm new to diesels so please tell me what the advantage is to convert from a rectangle air box to the newer model round ones?

Thank you for the information.

Pete..:)

The round filter has more surface area, so it will suck more air than a flat panel. I would just go with a round filter or a cone shaped filter without the airbox. My round filter (98) box i took off and drilled it full of holes, just until i get my "F" flash, then it is out of there, as well as the MAF and the vac pump. When i get rid of it i will put it in the FS section.

Can I upgrade the air filter on my '95 3500 from the rectangle filter to the later model round filter. If so what parts do I need to scrounge up?
Yes, its a very easy swap. You need the complete air box and all the plastic & rubber tubes/hoses from the air cleaner to the turbo. I strongly recommend installing the silencer tube, unless you like a lot of intake noise. Its amazing how much quieter it is with the tube. You will have to fab a small bracket for it, but its very simple to make. All the mounting holes for the air box were in my 95. The benefit I see is it seals much better than the plate filter. I run a K&N and my oil analysis reports show excellent filtering.
Before
http://216.77.188.54/coDataImages/p/Groups/40/40448/pages/239368/AirCleaner-Old-ws.jpg

After, without the silencer tube
http://216.77.188.54/coDataImages/p/Groups/40/40448/pages/239368/AirCleanernew-ws.jpg

And with the tube
http://216.77.188.54/coDataImages/p/Groups/40/40448/pages/239390/Resinator.jpg

Yes, its a very easy swap. You need the complete air box and all the plastic & rubber tubes/hoses from the air cleaner to the turbo. I strongly recommend installing the silencer tube, unless you like a lot of intake noise. Its amazing how much quieter it is with the tube. You will have to fab a small bracket for it, but its very simple to make. All the mounting holes for the air box were in my 95. The benefit I see is it seals much better than the plate filter. I run a K&N and my oil analysis reports show excellent filtering.
Before
http://216.77.188.54/coDataImages/p/Groups/40/40448/pages/239368/AirCleaner-Old-ws.jpg

After, without the silencer tube
http://216.77.188.54/coDataImages/p/Groups/40/40448/pages/239368/AirCleanernew-ws.jpg

And with the tube
http://216.77.188.54/coDataImages/p/Groups/40/40448/pages/239390/Resinator.jpg

Where did you get that box?

I found mine at http://www.car-part.com/ for about $125
I have seen them on eBay, but not very often.

I found mine at http://www.car-part.com/ for about $125
I have seen them on eBay, but not very often.

What did you search for? Is that from a 3500? F code? what years?

Thanks for the help

Hi,
1997 or newer, I think any truck, sub or tahoe with 6.5L turbo will have the same air box. Just make sure its the round air filter, not the flat plate filter. Make sure you get ALL the other parts all the way to the turbo, including the filter restriction thing. You can order the rubber tube from the dealer, but I think its over $100. When I got mine, the plastic elbow was damaged. I got a new one from the dealer and it was not too bad, maybe $15 or so. K&N filter is E-1796. They are frequently on ebay as it fits gas & diesel trucks.

i am routing the blow by hose down to the ground

Hm, isn't there supposed some vacuum to be on the outlet side of the PCV, however slight it may be?

When my turbo wasn't working, I heard a few mysterious bangs while towing, and engine oil came out somewhere and ran along the oil pan to the back. I've never had again that since the turbo works. So I guess the vent doesn't work as it should when you don't have it connected to the turbo inlet.

Now that I think about it, some of the 1500s may have a MAF sensor, so probably best to search for a 2500 or 3500 truck or Suburban.