My Intake Setup

[iiibdsiil]

This is my current intake setup. I was wondering if anyone had any better ideas. I really don't think that this is the best setup, but it came with the car.



Thanks guys.

- Brett Smith

[3D914]

Brett,

THere's one major flaw in that design - where the hell is the air going to come from - the trunk is sealed!

Other than that is looks kinda cool!

You could just swing the thing to the side and keep it in the engine bay. There's a guy at 9xauto.com that sells a similar setup - but mounts as I described.

Enjoy!

[iiibdsiil]

Yeah, I have a couple holes up by the shocks that are like 2.5 inch, maybe 3 but other than that, nothing.

Doesn't seem like enough air supply.

I don't have the engine cover thing, the one that keeps the water out, so I am trying to figure out a way that will keep the filter and the Air Flow Sensor dry and out of the weather.

- Brett Smith

[Marv's3.2six]

Here is mine..........

Was very easy todo. It gets plenty of air flow due to mod of engine cover.

[hargray2]

You could put a really high scoop on the rear!

[Toast]

Buy a Rain Tray, it also keeps the ignition system from getting wet and miss firing. I suppose you could plastic coat everything though. :P They are inexpensive used if you ask.

The two holes you refer to have cups in them and they are for the front latches on your targa top. Of course, you can always drill more holes for air.

And then, I suppose one could make a case for the hydrogen fumes from your battery being sucked in and providing more power. Of course the sulfate fumes might eat up the system too (Yeh, it's a stretch)!

Ahhhh, the joys of modification!

Toasted

[iiibdsiil]

I'm thinking I like Marv's idea.

Also, with the ignition system, well, hopefully the factory part of it isn't going to be an issue much longer, I am looking into an after market system, like an Electromotive Tec 2.

I definitely don't want to screw up the trunk any more than it already is, so I am going to go ahead and move the intake. The battery fumes aren't going to be an issue much longer as I have an optima gel cell going in in the near future.

Maybe the hydrogen is why my car spits little blue flames under deceleration

- Brett Smith

[Marv's3.2six]

Brett

We seem to have very similar setups i/e late 3.2 with MAF and modified exhaust. I am running 1 3/4" headers (no heat) to a B&B can with two 3" tips, loud and free flowing. The car does go like stink!

Have you had yours dino'd? Do you have any problems? Had your 3.2 very long?

WOT in the first three gears is pretty fun. The only problem I have is I think the mapping of the Motronic is a little bit lean (can you say pinging) under certain conditions, such as on a real hot day and less than full throttle application.

[iiibdsiil]

I bought the car like a month ago. I was stepping on it a little, but I had to get to a point to where I can trust the car.

Well, it needs piston rings, so I haven't been able to step on it since I discovered this.

I am not sure what size my primaries are off the head. Actually, I have no idea what any of the exhaust is. Next time I have it up on the lift, I will measure and take some pictures.

I have not had a chance to dyno it yet, due to the problems, but they should be fixed within the month.

I don't know if you have the Authority **** on your car, but mine seems to run rich all the time. I am seriously considering selling it and putting an Electromotive Tec-II system on it.

Other than that, the car runs like a champ. No problems that I can speak of.

I look forward to trading more information with you.

- Brett Smith

[Marv's3.2six]

Ouch piston rings, well while you have it apart change the stock rod bolts to aftermarket, they are known for being a weak link.

Also the valve guides are known to wear rather quickly. Other than that its a pretty bullet proof motor. They do consume a fair amount of oil, 1/2 to full quart per 1000 miles is considered somewhat normal.

I to have the Autothority MAF I suggest that you do not change it, it is pretty much state of the art for metering air flow. Its the same technology as used in the newer motors. If yours is running rich it must have been programmed wrong. The 02 sensor should pick up whats coming out the exhaust and should compensate the air/fuel mixture.

You could still put on an aftermarket ECU, I am considering the Autronic SMC myself, however there are some good Motronic experts in my area. I am ten minutes from Todd at protomotive, and he is a Motronic god.

Mine is a stock body car right now, I have the flairs and want to have them installed soon. Am buying a new house right now so my 914 project is on hold for a few months.

[iiibdsiil]

Thanks for the advice on the rod bolts. My buddy used to work for Prototech, and he is a good friend of mine. He told me to bring my car down there, use his lift, and he will give me a hand doing anything that I don't know already. He did mention the rod bolts. And we are going to go ahead and do the full rebuild.

I know he knows the motor like the back of his hand, so hearing you say rod bolts makes me feel better knowing that someone else has reiterated it.

I have seen the cars that come from Prototech. Turbo 911's running over 800 WHP on pump gas and what not, so I am going to assume he knows his motors.

I wanted to sell the Autothority stuff to help pay for the Electromotive Tec-II. My buddy, and another guy, that used to work on 911 race cars in Ohio, both said that it is not it is all cut up to be. I am not sure on your background in cars, so please don't take it as an insult to you.

So if people like the Autothority mess, then let me save you some money and buy mine. Then I can get my Tec-II system. I can see more of a gain coming from a properly tuned Tec-II than the Autothority mess.

Just my .02 cents though. Willing to be proved wrong. And, I am going to borrow a stock ECU for the 3.2 and the flapper valve for when I dyno the motor, so I can switch it out and see what kinda gains I really have gotten from it.

I am sure you have a lot more experience than me in this area. I read your profile, you were born in 52, so you are 51 years old. I am only 17, lol. So I go just go off what people that I know that know what they are talking about, people with a better understanding than me.

- Brett Smith

[Marv's3.2six]

Yeah, you don't have to tell me Im an old fart I know that, lol.

I was your age when these cars came out new. I saw one on the floor of a Porsche dealer with a sticker of $6250 and thought wow thats so expensive, and that I will never be able to afford one. I was driving a $400 VW surf bug at that time, making 3.25 an hour and gas was .33 a gallon, Times change.

If you are determined to sell the MAF then so be it. But I went from the stock "Barn door" style air meter and the Autothority
MAF is the single most significant bolt on improvement I have done to the car.
The stock meter is very restrictive it literally has a little spring loaded door that is pushed open via air flow past it. The MAF has a huge hole for air flow and only a little hot wire in it to meter the air. The Autothority MAF literally woke the car up, the throttle response went from sluggish, to instant throttle and an honest 30 hp improvement, very nice.

I have the stock 3.2 air meter, a custom made intake snout bracket with a large K&N air filter setup that will bolt straight into your car. You will need one when you sell your MAF, mine has a custom chip that fits 88 Motronic ECU. Let me know if you are interested. I could send pics.

[BURN-BROS]

Sorry to steal this thread,but what is the performance of a 3.2 conversion? Any hard numbers or comparisons? I know that 3.6 conversions run like raped apes but havn't heard much on the 3.2. Thanks a bunch

[iiibdsiil]

I am not sure. It is supposed to run the 1/4 in low 12's, but I am not sure. I know for a fact that it ran door to door Titan Motorsports 700+ HP TT Supra from a stop, and the Supra won because the 914 ran out of gearing.

When I gets my stuff fixed, I will take it to the track though, and see what I can get it to run.


Marv, I understand where you are coming at with the stock meter. The upgrade would be an instant thing, so I wouldn't even need the old ECU any more, let alone the stock flapper. Thank you for the offer though.

I am quite interested in borrowing someones stock flapper and seeing the difference, and maybe proving a difference on a dyno for myself.

- Brett Smith

[Marv's3.2six]

Yo, Burn-Bros I am just north of you in the 909, If you'd like to come up and meet me at starbucks some Saturday I would be more than happy to give you an E-Ticket ride in a quick 3.2

[BURN-BROS]

That is an invitation that I cannot pass up! I pass through there once every few weekends. I will p.m. you next week for your schedule.

[BURN-BROS]

Marv's3.2six you have a p.m.

[Marv's3.2six]

Yo, Burn-Bros PM back at you.