Hey dd, although i don't know when i could dyno i am going to install headers, not ssi's, on my sc. That's the advantage to only having winter for 2 months of the year. :D

I've got the skinny tires... :D

IMHO, it's the quick shifts that'll hurt any 915 box. The synchro mechanism is just not up to the task of quickly transferring the power needed to match rotational speeds of both shafts. As a result it'll eat at the dog teeth and operating sleeve when you jam it into gears. Dave has another good point. My setup is by no means a drag racer. I ususally keep it down in 1st.

I have not had mine on a dyno yet but I would expect similar numbers to Jack's car since:
- I run the same engine type and chip
- I run 993 headers with high-flow mufflers (free flowing)
- I smoke MikeZ's car since his is a little heavier

It would be very instersting to have all the 964's with the same chip but different exhaust setups on a dyno the same day. We currently have B&B (Jack), headers/supertraps(Mike) and 993HE/glasspack (me).

I belive they'll all be very similar powerwise. On a dyno it comes down to gearing. On the road in a straight line performance it'll be tires and weight. On the track Jack's car in a whole different story for all the suspension he has and his track experience....

ingo

Just ask....:p

We never made any HP claims...we wanted to see what "others" found first....thanks to Jack. We will not make ANY claims. If you don't like it send it back....

The opening of the BBRII video has a sound clip of my 3.6 with dual supertrapps, headers and the chip.....Surflvr should be able to send that to you....

surflvr, can you send it? :-)

I checked when I got home. It is issue #114 (no month is specified on the cover but if you open it says Sept 2003). Ninemeister replaces the VRam with 964 plastic intake because he believes "in practice it restricts breathing of of the engine at higher revs"
Hi also uses the 964 heat exchangers and pre-964 cam sprockets. Claimed horsepower is 305hp and 282 ft/lb.
-Chris

The vram in and of itself does not add much hp. It does allow the torque peak to be spread over a wider rev band.

For ultimate power, albeit over a narrow band, , the plastic manifolds are second best to individualy throttled manifolds like the factory Cup(Thielert Injection), RSR and TWM intakes. The problem w/ making ultimate power lays more w/ the cams which are limited by the metering mechanism connected to the manifolds.

The vram is a device best suited to a street car for combination street/DE, There are better ways to go for an all out race car.

The 993 cam drive is a unique arrangement which needs to be backdated to use any of the hotter cams.

Ninemeister replaces the VRam with 964 plastic intake because he believes "in practice it restricts breathing of of the engine at higher revs"
Hi also uses the 964 heat exchangers and pre-964 cam sprockets. Claimed horsepower is 305hp and 282 ft/lb.

Go have a look at their site. They don't exactly stop there. I think they junk the whole airflow measuring system and run a MoTeC EFI using Alpha-N (throttle position and RPM) only.

Link to package

Description of what they do

You have contact info for this guy?

Thanks,

Tom

Thanks, but he isn't talking about Imagine Auto, but a "gentleman in Lousiana".

Tom

Hi Tom - Blown is correct - the CIS guy only works through distributors so Stephen at Imagine Auto is who I worked with on this. You can e-mail him at porschephd@imagineauto.com - tell him Bill Bennett mentioned the CIS fuel head rebuild to you and Iam sure he will take it from there. I would be interested ot see what results the SC fuel head gets.

When you guys say "fuel head", do you mean the fuel distributor?

The 911+P.W. article doesn't mention anything about Motec.
-Chris

Souk - yes, I mean the fuel distributor. The more I think about this for the SC the more I wonder if it would be somewhat equivalent to chipping a Carrera motor as you would basically be improving and increasing the fuel flow under heavy throttle. On my 930, I was not looking for more power but merely a safer AF ratio for the power I already have. Nonetheless, you can see in the dyno I posted that while my max HP stayed the same, I did gain quite a bit of torque.

Souk - yes, I mean the fuel distributor. The more I think about this for the SC the more I wonder if it would be somewhat equivalent to chipping a Carrera motor as you would basically be improving and increasing the fuel flow under heavy throttle. On my 930, I was not looking for more power but merely a safer AF ratio for the power I already have. Nonetheless, you can see in the dyno I posted that while my max HP stayed the same, I did gain quite a bit of torque.

I think the Motec article was to do with the tuning of a 964RS rather than the guy that did the engine transplant.

My apologies - you guys are right (and I was thinking of a different article in the same magazine about their 964RS plus). I dug around their site a bit more and found what looks like the article you guys are referring to:

The right article, I was wrong!

As we all should know, ignition and fuel map data stored in Eproms,
flash devices, and microcontrollers used in Porsche Motronic systems
are copyrighted material controlled by Porsche A.G.

Just ask AMD about copyrighted microcode when they were sued by
Intel over 386 and 486 math coprocessors. These guys who sell
performance chips are potentially liable for copyright infringement,
since they all use the basic Porsche microcode and make minor
alterations and resell it as their own code in the performance chips.

It's the same as if someone changed a couple of pages in the "Porsche
911 Carrera" manual by Bentley Publishers and reprinted and sold it
under a different name. In either case, a microcode or a book, it's an
expression of one's work and as such protected by copyright law. As
you may have noticed, performance chip guys don't acknowledge use
of Porsche's copyrighted material in their literature nor on their websites.

But again, may be Porsche has little concern about the copyright abuse,
since they probably look forward to selling a lot of Porsche parts the
result of damaged engines.

Have Fun
Loren
'88 3.2