Weissach1982

My reply to all of you who bought the parts is ask Mark Kibort about it. I emailed him last night and asked him a few questsions to sort things out. But by all means this mod should work fine as long as you plug the necessary vaccum lines, make sure your vaccum advance is set right and install the correct switches to the Euro TB microswitch. As i'm still asking Mark about how to wire the Microswitch up, i'm sure he'll tell you all what is up. Besides its a bolt on mod, if Buttstangs and F-body camaros can do it then why should the 928 be such a hassle? In my opinion on Jon's car, maybe there was an anomally with it, because how is it possible to lose power by letting the car breath better. Sure their may be slight turbulences going from the Euro runners to the US heads, since the heads are not the euros. All in all, I cleaned half of my parts today and getting ready to paint them and put that beautiful Porsche crest on top of the plenum, them i'm going to strip the top of the motor down and install my Euro parts. I'll let everyone know as soon as i'm done. I doubt I will be able to get a dyno ''before'', but i might get an ''after'' dyno when i'm completely done with all my mods. If any one might want to estimate on my cars power, the motor is totally rebuilt like brand new out of the factory and has a test pipe, no cat*, s 2.5 exhaust all the way out to a 3in tip and a single turbo 2 type ''straight through'' muffler. Sounds wicked mean, kind of like a Raped Ape. lol
Well thanks guys, like I said just talk to Mark K, he was the one to do this mod and has the facts to prove it.
Cory J.

Weissach1982

Well not to let this thread go any time soon, I have a question concerning the fuel adj screw on the Euro Tb.
Where is that supposed to be set when i install it on my car? I haven't touched it since I got my parts in the other day. Also, a question about the fuel pressure regulators. Has anyone installed two S4 regulators on they're 16V car yet, and what are the benefits of having those over a full adj. regulator?
Thanks
Cory J.

ViribusUnits

If your talking about the screw on the throtal body, then it's to adjust your idle. Just use it to set your idle. No bigie.

The S4 regulaters is an untested idea I think I came up with. It's untested, and un tired, used at your own pearl.

Weissach1982

What about the Huntley racing Adj regulator or the Rising Rate at 928 Specialists.
Cory J.

ViribusUnits

They work, just I don't think they'll be perfect at part throtal. But thats probably OK.

mark kibort

part throttle wouldnt be a concern as most of the mixture action is controlled by the o2 sensor. its in the very lean range anyway, by design, for fuel mileage eff. at 75% throttle, the system goes open loop, and the higher pressure will result in richer mixtures. not a big deal, as the stock mixtures are on the lean side anyway.
MK

mark kibort

Ive heard you can do one regulator (adjustable and one damper) instead of two adjustable regulators.

the TB screw is basically a controlled air leak throttle plate by pass!. moer the leak, the more air let into the engine, and still is metered by the AFM. (which also has a bypass screw, but that is mainly to bleed off air to change idle mixture, not really effecting full thorttle operaiton.)

MK

QUOTE]Originally posted by Weissach1982
Well not to let this thread go any time soon, I have a question concerning the fuel adj screw on the Euro Tb.
Where is that supposed to be set when i install it on my car? I haven't touched it since I got my parts in the other day. Also, a question about the fuel pressure regulators. Has anyone installed two S4 regulators on they're 16V car yet, and what are the benefits of having those over a full adj. regulator?
Thanks
Cory J. [/QUOTE]

toofast928

So i'm trying to port the USA "u" to the Euro Throttle body. Having trouble finding the right dremal bit to grind the aluminum. Any suggestions?

mark kibort

do yourself a favor and find someone with some air tools. you will be grinding for hours with a dremel. however, it can be done. I did most of mine initially that way, then just before i installed it, my buddy with a new air tool system pulled quite a bit more material out .
the dremel parts are little rotory cylinder sand paper elements that fit over a little round short tubular element. they last for a few mins until they wear out. the process is slow, but eventually, you can get close.
with an air grinder, you can save a ton of time. (probably done in less than 15min.)

Mk

toofast928

Thanks Mark, I have an air drill where can I find a bit? A Home Depot grind stone?

mark kibort

its a bit that looks like a rotor turbine, but cone shaped. takes a lot of meat off quickly, so be careful. seems like a common bit, i just dont know what it is called. not a stone at all, its a cutting bit spins off material, but leaves a pretty smooth surface.

MK

toofast928

Ok I just used 2 sand discs on the dremel tool removing the seam of one runner. Messy job, But the look is sooo cool. Thanks Mark...........

mark kibort

yeah, but doing the inside of the "U" is a different story. use the round sanding short tubes. (for lack of a better name) the air tool will be amazingly faster.

MK

Weissach1982

Mark- about threading the hold for the breather, is there a certain kind of fitting or pipe i'll have to buy in order for the breather line to fit?

I had to go out today and buy a new runner-to-plenum boot/hose, the old one was warped where the clamp met the runner. Its blue silicone, but nothing a black marker can't fix or unless one day i want to buy all of the same silcone hoses for it. Also, I had to make up two new gaskets last night after cleaning them, not really that hard, only my first time. I'm hoping to get them painted tomorrow and start taking apart my beast.
And about the regulators, I'll just call 928 specialists and get the setup they have. Xmas is coming up soon so I'm hoping for some kind of Xmas bonus, so i can buy the Fuel regulators and electric fans to remove my smog pump and add some more umph.
One more thing, does the 02 sensor have to be hooked up for everything to run right? Because mine is not hooked up and i'm buying regulators to increase the pressure anyway.
Thanks,
Cory J.

Jon F

If you're going to use a Dremel to port your "U" section, I recommend using the High Speed cutters. They're great for aluminum, which is a very soft metal.

I used #115 and #117 listed at this page:

http://www.dremel.com/html/products/...s/carving.html