Filter for T-78 Turbo 4" inlet
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if you have a aftermarket radiator you will have to have to make a custom intake for the t-78. I have a 4.5 inch k&N filter and I have trouble getting it on and off the turbo. You can take the cheap way and use dryer hose, or have you some custom aluminum piping that has a 90 degree angle. I have yet decided witch im going to choose though. the alum piping would look nice though
btw- 4.5 inch filter is not big enough for the t-78, you want as big of a filter as possible.

btw- 4.5 inch filter is not big enough for the t-78, you want as big of a filter as possible.
Senior Member
Joined: Oct 2001
Posts: 443
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From: Minnesota, now in FL and I dont think I'm goin back
I wanted to change my filter too, but i don't wanna go with K&N. My local shop said they are getting in a couple Blitz 4in mesh filter for me and the owner. 93redFD, what do u mean by 4.5 in isnt big enough. The turbo fits a 4in intake. BTW I used Bltiz's SUS mesh intake when I had the twins and I loved em. Now for sale
I'm running the BLITZ huge 6" filter on my setup, I had to get the custom adapter from CORKSPORT that tapers down to about 4" for the mandrel bent aluminum piping that connects to the turbo inlet. It was pretty much a custom job, but well worth it!
I pretty much ruined an engine because I couldn't find a replacement filter to fit on my T78 w/FMIC and Fluidyne radiator, sigh....I have a K&N crammed in there and I've been TRYING to get a GReddy filter for three months but the local shop doesn't seem to be able to get them in.
Hi Northwest,
I'm not sure how your setup is, but I am currently using a K&N intake (Part Number from Summitracing.com KNN-RU-2510) on a T-series turbo. It has a 4 inch inner diameter for the turbo inlet, 5 3/8 inch base diameter, 4 3/8 top diameter and is only 3 1/2 inches long. It is priced at $31.69 + $7.95 for ground shipping and handling. I've attached a picture of the intake. Goodluck.
I'm not sure how your setup is, but I am currently using a K&N intake (Part Number from Summitracing.com KNN-RU-2510) on a T-series turbo. It has a 4 inch inner diameter for the turbo inlet, 5 3/8 inch base diameter, 4 3/8 top diameter and is only 3 1/2 inches long. It is priced at $31.69 + $7.95 for ground shipping and handling. I've attached a picture of the intake. Goodluck.
Rotary Enthusiast
Joined: Dec 2001
Posts: 773
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From: WILBURTON, OKLAHOMA
My new greddy t78 kit came with the new style Airinx filter it looks sweet. Would probably look even better in the car.
It looks just like the Airnix for the stock twins only a lot bigger. It came stock with the yellow foam but I think you can get it in other colors. It is Designed really stumpy so it will work with a front mount intercooler and fat radiator.
It looks just like the Airnix for the stock twins only a lot bigger. It came stock with the yellow foam but I think you can get it in other colors. It is Designed really stumpy so it will work with a front mount intercooler and fat radiator.
Re: Honeycomb
Originally posted by Northwest FD3S
There are no honeycomb style (hks) filters with a 4" inlet.
There are no honeycomb style (hks) filters with a 4" inlet.
I have a brand new HKS one sitting. Its for sale as well, $100 shipped.
Re: Honeycomb
Originally posted by Northwest FD3S
There are no honeycomb style (hks) filters with a 4" inlet.
There are no honeycomb style (hks) filters with a 4" inlet.
I have a brand new HKS one sitting in front me. Its for sale as well, $100 shipped.
Originally posted by m0t03
. My local shop said they are getting in a couple Blitz 4in mesh filter for me and the owner.
. My local shop said they are getting in a couple Blitz 4in mesh filter for me and the owner.
Or tell me where i can get one?
Cause i havent been able to find the 4inch inlet blitz filter online.
Originally posted by Astro
Can you get the part # for that once it comes in?
Or tell me where i can get one?
Cause i havent been able to find the 4inch inlet blitz filter online.
Can you get the part # for that once it comes in?
Or tell me where i can get one?
Cause i havent been able to find the 4inch inlet blitz filter online.


