Brent 89-GT

Since there seems to be some interest in this topic, I thought I would start a new thread. The old one ended up tainted with a bunch of other stuff

Since there only seems to be one "kit:" out there, I thought I would start with it.

FAST is selling kits for the newer 928's. They are about $5000. It is claimed that the kit can be installed in a weekend using regular hand tools. The power gains look impressive. They are basing most of their claims on 4-5 psi of boost. It looks to net about 100hp. Personally, that would be enough for me. I would also be comfortable with the engine longevity at that low boost level.

So what is wrong with this kit? I have heard that the pully system turns the accessories too fast, anybody have reliable info on this?

I have also read that the SC bracket is flimsy and the belt suffers because of this. As an addendum to that, I hear that the problems tend to come about at boost levels above 5 psi, again, does anybody have reliable info on this? I would think that FAST's testing would have revealed a drive system flaw. That testing was at 4-5 psi. Comments???

If the kit is sound at 4-5psi, I feel like we have found an answer. Does anybody know of any other failings of this kit?

Gretch

I came about as close as I could to ordering that kit, until I read the threads here. I am very interested in the gory details of everybody's experience with this "kit". I'm not gonna do it until it has credibility........and it ain't got it yet.....

Brent 89-GT

We are on the same page Gretch <img border="0" alt="[cheers]" title="" src="graemlins/beerchug.gif" />

If we can determine that the "bugs" are worked out, or ficticious, I would likely become a customer too

Old & New

I, too, have the same frame of mind.

Too bad Huntley couldn't keep their story straight; their system is alluring.

I think the fellow that started with a FAST kit & updated almost every part would have the most valuable opinion on this topic.

Huntley Racing

Old & New:

What is your issue? We have Rennlisters coming to look at this car. We have other cars lined up to help with Beta testing. Would you rather I keep everything hush hush? I think you are reading into things too much.

Bernie

Ooooopppsss!!!

Spy Photos.....

<a href="http://groups.msn.com/thediygang/superchargingthe928.msnw?action=ShowPhoto&PhotoID=68" target="_blank">http://groups.msn.com/thediygang/superchargingthe928.msnw?action=ShowPhoto&PhotoID=68</a>

<a href="http://groups.msn.com/thediygang/superchargingthe928.msnw?action=ShowPhoto&PhotoID=71" target="_blank">http://groups.msn.com/thediygang/superchargingthe928.msnw?action=ShowPhoto&PhotoID=71</a>

Let The Supercharger Games Begin.........

<img border="0" alt="[jumper]" title="" src="graemlins/jumper.gif" />

Cheers

GoRideSno

Bernie,
Ahhh Now I see the link, the jpg name. I just noticed that you are from Ojai this evening too. I'll be looking for some more techinical advice from you Bernie. Or should we call you Mr P?

Andy K

G Man

It's great that there is kit for the newer cars. What about those of us with early cars. Is there any kits for us or are we SOL. <img border="0" alt="[cheers]" title="" src="graemlins/beerchug.gif" />

Carl Fausett

Jim, I have supercharged an early car (a 78 Euro 5 Spd, #2056) with pretty good results.
Dyno'd it this fall and had 303 RWHP. You can see pictures at <a href="http://www.928trackcars.com/fausett" target="_blank">www.928trackcars.com/fausett</a>
I made all my own parts. No kit. If you have questions, shoot them at me and I'll try to answer what I can.

Old & New

Carl,

Looking forward to you getting some mpegs onto your website! <img border="0" alt="[burnout]" title="" src="graemlins/burnout.gif" />

Derrek,

On 1-3 you said you were finishing up and tuning the car "as we speek".

On 1-9 you said you had zero dyno time.

My point is that these statements seem contradictory and I am agreeing with Brent & Gretch that there is only one kit out there.

Sorry to offend; it is obvious that you are deep into the works with your system, and we look forward to your completion & distribution of it.

<img border="0" alt="[cheers]" title="" src="graemlins/beerchug.gif" />

Brent 89-GT

Hey Derek,

Read through this thread. <a href="http://forums.rennlist.com/cgi-bin/renforums/ultimatebb.cgi?ubb=get_topic;f=15;t=014475#000000" target="_blank">Advice on Huntley Racing</a>

That deals with MY "issues" pretty well. I don't want to start a mudslinging event here but I think this illustrates that we need to carefully consider our suppliers.

Personally I think your Roots blower is a better idea than the cetrifugal type being sold by FAST. If it works, and if it can be delivered in a professional manner, I may reconsider my current opinion on Huntley.

Hey Bernie, Whose parts are those? Is somebody else entering the fray?

Jim, The FAST kit works with the mass flow cars. I think the CIS injected cars are also do-able. That system is also amenable to mods like this. I think the biggest problem is that in some cases you can buy an entire used 928 for the price of the SC kit. Those looking to market something are probably wondering how many customers would be willing to pop for a $5-6000 SC kit for their $5-8000 car. Not a flame, just might be reality.

I am still hoping will will hear from a FAST kit owner, or FAST themselves on this subject. It sure would be nice to know how well the kit works.

Carlos

At last!!!! Thank you Carl for the info. I'd really appreciate more info on where you got your clutch. As for roots vs centrifugal, roots will definitely get you more low end but with a 5sp and MORE low end, getting moving will be dicey at best. A Vortec or Procharger will still give more low end but will be (IMHO) a little better top end which is where we need help.

Jim V

Carl,

I'd love to hear some comments on the injection in your car; from the pics ia looks as if you are still running the CIS.
What if any mods did you have to make?
How did you determine that the CIS would meter under high RPM/boost conditions?

Seems that the CIS system could easily be set up as-is and blow-thru (your is this way Carl?) or relocated and suck-thru using new fuel hoses.
The beauty of the CIS sytem is that as long as it has the air and fuel capacity it will provide proper fuel metering for any mods that alter air flow (until it bottoms out) and A/F ratio can be adjusted both across the range and under specific conditions such as WOT. And no brains to fry!

Randy Page

Hi Folks,

I purchased and installed one of the very first FAST kits (over two years ago), so I can give you some feedback on it. Overall, the quality of the parts were good, and they fit the car with few major problems. But, as I spent more and more time tweaking the car, I found a number of things I would have liked to see changed with the bracket and pulley:

Bracket - I would have made it thicker, have more mounting points to the engine, and change the belt tensioner system. Additionally, I ended up having to shim out the bracket from the engine using sets of three stacked washers to get the blower pulley to line up with the crank pulley.

Crank pulley - I would have designed it so it turns the accessories at the same speed as they would have turned stock.

Now I must point out that I haven't seen a new FAST kit in a while, so they may or may not have addressed these issues. Also, I ran my FAST setup for about two years with no major problems.

I am currently in the process of changing over my bracket and pulleys to the new design that Bernie posted pictures of. So far, it looks like these parts will address all of the issues I pointed out above. I'm hoping to have everything installed in the next couple of weeks, and then will be making a visit to the dyno.

More to come...

Randy
87 S4 Auto Black/Black
Supercharged & Intercooled

Brent 89-GT

Hey thanks Randy

So Bernie, are those updated FAST parts????

Sounds like if the bracket and pulley issues get solved we have a viable kit <img border="0" title="" alt="[Eek!]" src="eek.gif" />

I would expect some dyno time with any of these kits. The air/fuel is so critical, and when correct can have a huge affect on the power output.

Thanks for the reply.

Anyone curious about the Huntley link can find it under a search on the 944/951 board. It is titled "advice on huntley"