Kevin Michael

Bill I'm sorry. Looking back I did say screens. I thought it was common sense to put an element between the two, and most (some do not)guys who screen already assume that. The 552 was before I pulled the box. That is the day one of the standalone guys , while dyno'ing ,looked at the box and said "hey lets take that off and see what happens". Keith the owner said no till I get some kind of screen or filter on there. So I haven't made it back as I have been busy building/painting cars including my Porsche 959 replica. I am not knocking Murf and he knows it. We are friends and no one could have done it any better than him.

hacker-pschorr

Nobody is arguing if the supercharger will produce more boost with or without the airbox. That's not the point.

I do not care how Kevin runs his car, I'm just trying to advise anyone else from copying him.

Kevin Michael

I am not recommending this to any one else so no worries Erik. Mine pulled like a freight train to redline as well before. It is now pulling like a 747. Anyone who is not used to Murf 928 power and more of it would not notice the choke at 4-4.5grand and up. Try your car my way Erik, then reinstall. You will feel that bottleneck for sure. Stupid comparison so don't laugh, but when I dynoed that 552, my G-tech told me I was at 577. The point is I threw in bigger injectors and tuned the fuel, added the airbox mod, and the thing is telling me I'm at 638! So if it reads 25 higher than a real dyno, I might be at over 600 now. I'm not saying that's the case, but I will find out soon.

Z

I would very strongly suggest that you do NOT try that. At least one engine has been blown up by somebody who wanted to see how much power it would make on the dyno with no airbox on the supercharger. Shane's car is an otherwise stock '86.5 with an automatic transmission and made 500rwhp with the airbox on, and with filtered air. The kit is designed as a complete system. There are proper ways to increase the horsepower further. Just pulling off the filter and airbox and running higher boost is not one of them.

Probably that same guy who as a kid said to jump off the roof with an umbrella in your hand, to see what happens.

Kevin Michael

Z, are you saying the airbox is not a restriction? I am not advocating its non-use, but please anyone with any sense can look at it and tell without testing it even it is a horrible restriction.

AO

I'll bet his last words were, "Hey! Watch this!.... (here hold my beer)..."

Z

No, I am not saying that the airbox is not a restriction. It is a restriction, so is the filter. That goes for the screen that you've got on there, your radiator, and even the basic opening of the supercharger too. The goal was not to have a system with no restriction. It was to provide a safe level of boost that will put the car to around 500rwhp. The setup with the air filter and airbox does that. If you're goal is to remove all restriction at the expense of engine wear, increased detonation, and a more than likely complete engine failure coming up, removing the airbox is a very good start.

As I said before, if somebody wants more power, there are proper ways to do it. Todd's car was over 700rwhp, even with his car having higher drivetrain losses due to the automatic transmission, and his car had an air filter.

hacker-pschorr

Friend of mine is making over 500rwhp without any boost with a stock displacement engine.

There is more to the power/ performance numbers than the level of boost. It's sad how many people cannot grasp this simple concept.

hacker-pschorr

It's nice to see the prodigal brother returns to rennlist.

hacker-pschorr

I'm not sure proclaiming victory because Randy stepped down and Gretch taking the helm is such a good idea.

This is like poking a bear at the zoo after climbing behind the safety barrier.

Good luck with that

Excellent

jthwan22

how about this stock one? http://cgi.ebay.com/ebaymotors/Porsc...3A1|240%3A1318

AO

No coolers. I think this is for a 89+ 5-speed.

David L. Lutz

Andrew,

If I remember I had to modify/change the following;

Shift the condensor forward by cutting the 2 mounting brackets shorter and re noching for mounting. AND also change the way the trans. cooler mounts, shifting it forward.





Shave off part of the lower rubber mount.



Reshape the fan brackets and change the bolt hole locations.



Cut off about 3/8" across the top of the air dam. Rad ended up sitting a little higher and the hood would not close.



Also notch it



AS you can see here it is a tight fit. I did have to eliminate the left and right air shields. (orginally black) With them in place I could not get the rad shifted to the front enough.



In the end I am very pleased with the results. It looks good, and so far cools much better.

Since these photos I have changed to running 2 9" fans in front of the Rad. Its a much cleaner look, but I need to check the cooling difference this summer to see if it is the same as the 16" you see pictured here.

Hope this helps.

David

AO

That helps a ton! Thanks.

Kevin Michael

Does Todd have that airbox? I have no problem with an air filter, I wish I could do one that fit. I realize the many restrictions in any system, but the idea is to eliminate every one you can
Thanks to the OP for sharing this thread BTW.