edi1

hi who has the most reliable supercharger, thinking hard for my 88.

dont want to make a mistake. thanks

EspritS4s

Boy, we are on a roll recently. OP, check out the stroker thread from this week to see how these open ended and 'innocent' questions can turn out.

There are a couple (maybe 3) supercharger kit vendors. 928 Motorsports and Tim Murphy both have websites with info on their kits. 928 Specialists also has a kit, but I don't know that it is currently available. In addition, you have some turbo options from smaller vendors.

Which solution is more reliable is not a question that you will get any thing close to a definitive answer. There are a lot of posts in the archives on all the available solutions and the tradeoffs.

SQLGuy

For one of the longer threads, search on Surcharger. Not sure if it was a typo or French by the OP of that thread.

Erik N

What has happened to proper sentence structure? Is society that lazy now days?

SeanR

Tim Murphy's kit is the best supported kit out there. The only one I'd install. JMHO.

DR's 928 Specialist kit looks the best but not many out there, shame too.

inactiveuser1

Longer thread lately was:
https://rennlist.com/forums/928-foru...mendation.html

RCinXS

Hmmm.

I have the 928 Motorsports kit. Never had any problems with it. It did greatly improve the performance of the car when the engine was stock.

The engine and I have outgrown the flow it can produce. But that's not really a problem with the kit.

It's just my quest for more power. Presently considering his billet impeller that is supposed to increase the flow by 20%.

I also hear good things about the Murf kits, but haven't seen one in person.

The twin screws are absolutely the coolest looking of the bunch.

No matter what kit you choose, all three have made kits that make it pretty simple bolt on power.

Lizard928

I would only buy and purchase a Murphy SC kit.

but then again, maybe its because I know it would make our mod hacker happy.....

LEADASS

I put my $$$ into Murphman! Two weekends to install for an idiot (me), very fast! The Specialist kit is the best looking. Don't know Carl's kit but have bought many products from him with good results.

DR

This is pretty easy, and you have some excellent options for 928s.

FWIW, here would be my recommendations, based on a "little" experience and first hand knowledge of the various systems... and you should have no worries of making a mistake.

For 78-86 16V 928s -

Carl at 928 Motorsports www.928motorsports.com is the one to use, he has them well sorted, they work as advertized, and he will stand behind them and give you all the support you will ever need. Carl is the Man when it comes to Supercharging 16V 928s.

While not advertised (for fear of being lynched by some very patience 32V 928ers :-) 928 Specialists www.928gt.com has a 16V Twin Screw system designed for L-Jetronic/LH 16v engines (non-CIS). It is only in prototype stages as far as building parts, but if someone want to put one together I can supply the main parts for them to do it. These would be a DIY type build it yourself "Tuner Kit" for those that know what they are doing and can sort out the tuning/injection "details". The exception being the 84-86 Euro S 16V, of which I can get you 90-95% there and the rest is up to you. Due to the nature of the cost of one off type prototype parts (waterjetting 1.5" thick aluminum gets expensive vs cast intakes). It would be the most costly of the 16V options available. and will require the most "tinkering" to get it up and running perfectly (again excluding the LH Euro 16v). I can offer basic support and guidelines to make it work, but nothing like the real support for a production system until it is released as a production Kit.

But, keeping it real for the average 16ver wanting Boost... call Carl at 928 Motorsports, currently he is the real choice for that.

For 85-86 32V 928S

Tim Murphy - http://www.murf928.com/ has done a few of these and from what I have seen heard they are just as Rock solid as his 87-up Sytems (see below). Build Quality, Performance and Support are second to none, no surprises , no worries.

Carl at 928 Motorsports www.928motorsports.com also has a Kit for the 85-86 (Carl Correct me If I am wrong please) and while I haven't seen one in person, as with his 16V SC systems, you will get all the Performance and Support you expect and deserve.

David (me) at 928 Specialists www.928gt.com - Complete Twin Screw Kit for 85-86 32V 928s. Requires Tons of patience to wait for one, due to mostly my health issues..BUT things in that area are hopefully getting better very soon as I have already started building systems since getting back to work recently. Again if you are in a hurry, see Tim or Carl above.

For 87-95 32V 928 S4/GT/GTS

Tim Murphy - http://www.murf928.com/ is the SuperCharger KING of the late Model 928. There are more "Murf" SC kits out there running and kicking Butt than all the other options combined. Build Quality, Performance and Support are second to none, no surprises , no worries. ...Recommended you buy stock in Tire Companies.

Carl at 928 Motorsports www.928motorsports.com Until Recently Carl sold and supported the Murf Kit, but has recently created his own 87-95 SC Kit uising a Raptor SC. Again, while I haven't seen one in person, as with his 16V SC systems, you will get all the Performance and Support you expect and deserve. Carl knows Supercharging 928s as well or better than anyone.

David (me) at 928 Specialists www.928gt.com - Complete Twin Screw Kit for 87-95 32V 928s. Once again, requires Tons of patience to wait for one, due to mostly my health issues..BUT things in that area are hopefully getting better very soon as I have already started building systems since getting back to work recently.

We have also just started to sell "Tuner Versions" where we supply 95-100% of the components and the Tuner does all the assembly and some fabrication that I have been unable to do lately. Typically our Twin Screw Kits are shipped Completely assembled as basically a drop in intake assembly, similar to RnR refesh of a Stock Intake(but easier in some ways).

BUT, again if you are in a hurry for a 100% Ready to Install Kit, see Tim or Carl above.

Tim , Carl, please correct me if I got anything wrong.

EspritS4s

DR,
It's great news to hear that you will be moving forward with your SC kits. I have an old Andy Keel Autorotor kit sitting on the shelf here. Would it be possible to use that as a base and buy the parts that you have improved (both cosmetically and functionally) or are they too different?

David L. Lutz

Installed Tim Murphy's Stage III kit about 2 years ago. No issues and still running strong.

As many have said before, be sure your engine is up to date on maintenance especially any leakage in your vacuum/intake manifold if you want a good correct idle.

Rick Carter

Nice to have options.

Lizard928

But no one has mentioned that turbos are of course better than SCers.....

DonT

I installed the Murf SC Stage 2 kit (with intercooler) in March 2004.
Zero problems with the SC or any of it's components.
Great kit with excellent support from Tim.
No vested interest, just an extremely satisified customer!!!...