Hello all,

I would like to run the stock ('87 Carrera) Motronic air (filter) box on my 3.2 in my Six instead of the usual K&N air filter cone.

I was at the Phoenix Club swap/show over the weekend and the 3.2 cars that were there, that I saw, had the K&N cone right behind the driver's head essentially. I really want to try to minimize the noise in that location (old guy).

I called and talked with Patrick Motorsports, I figured they would already have a kit to do that since they do so many of these swaps, but alas, nope.

Does anyone have a car with the 3.2 Motronic injection where they are running the factory air box? If so what did you do to make it fit? I would love pictures of course.

Any help would be appreciated. We are so close to being done.

Thanks,
Michael

Click to view attachment

Yes, I did it and it was very easy. I took the suggestion of people here, went to my flaps (pep boys) and got a 4" extension with a rubber sleeve. It was $12. It was plastic and had a bend on one end so I cut off the bend with a chop saw.

I then used the extension between the AFM (air flow meter) and the rubber inlet. Since the afm now sits about 10" to the left, I made a bracket out of metal that I got from home depot. About 3/4" wide, maybe 1/8 thick. It might have two brackets, I don't remember. But I just bent the metal in the vice with a hammer and drilled holes to fit. It just helps to support the afm, nothing super fancy. Now the air box sits all the way to the front left, above the oil filter. I might be able to put the curved snorkel on it if I really tried but since the opening was under the shelf at the rear window, I left the snorkel off.

It was an easy project for me so it's really easy for most people. Once I knew the brackets fit, I hit them with some black paint. They only had a chrome extension but even that looks fine in the engine bay.

Sorry, no pics of mine but here's Jim's car that has the same idea. You do NOT need to flip the intake or anything silly like that.

See, I knew this could be done and it would not mean breaking the bank. I appreciate the photos. Anyone else who has done this and has pictures, please post them or get a hold of me on a PM and I will give you my email address. I appreciate the help Mark and sixnotFour.

PMS used to sell an adapter kit for $75 but it was just like what everyone here was already doing.

Thanks Mark. Yeah, my first call was to PMS and they told me they had nothing and would just make something on the fly as needed. I was surprised to hear that as I believed they have done so many of these they would have a readily available kit.

PMS, Did this canister type,,With air intake Right side...................do I sound fast ?
Or is that a heater blower on the right side ??

Anyone else? I like seeing how others have done stuff before we tackle it.

Michael, that is a spiffy clean engine compartment!

Where did you get the oil hoses to the side tank?

Clean A/C install in a 914? That's just mean...in a good way.

He was at Hershey last year. Said it was a great working system. I think it would be terrific on a typical east coast hot and humid day.

Some cool ways to make this work.

Looks clean, but it would make it harder to get to the fan belt.

This is my car before I added heat exchangers and the right side early air ducting instead of that electric fan mess. I recently switched back to a k&n air cleaner and heat shield to make it water proof. The stock air cleaner makes it harder to check the oil, but it is much quieter.

Reviving this thread as I am approaching this swap on my list of things to do. So, if you are running a motor with Motronic injection and the factory 3.2 air-box, let me see how you installed it. I have seen a few examples and just want to be sure I am not overlooking something.

Ideally, I would like the air-box to live over near the battery on the passenger side of the engine compartment. I want to be able to check the oil easily.

Your engine is beautiful

Thanks Greg.

I didn’t flip the injection. Just the $10 flaps extension. It’s still easy to get to the oil cap. A little harder to get to the oil filter but removing the air box from the maf is only 4 Allen head bolts so not really an issue. It’s one of the easier things to do.

I did exactly as mepstein has done. I also purchased PMS kit when it was still available but only used the tube and clamps as their kit was for a larger cone filter. I would like to add that the K&N cone filter that was on it was too small in order to clear the engine lid so I am actually moving air more easily using the stock 3.2L airbox with snorkel turned away from the fan. I have generally better function and induction noise is quieter.