Supercharger Kit COMPLETE, Under $5300, Over400HP, Less than 6 hours to install
08-31-2005, 03:17 PM
#1
Developer
Thread Starter
Supercharger Kit COMPLETE, Under $5300, Over400HP, Less than 6 hours to install
http://www.928motorsports.com/parts/Murf928super.php
It's here! This is the successor to the Murf928 Supercharger kit, and reflects all the tricks and knowledge Tim Murphy and I have gained over the last 5 years installing SC kits on the 928.
Tim has done and excellent job of cutting to the chase - just what you need, (but everything you need), super-easy bolt on installation, and a very high reliability outcome. Stable and strong.
Engine does no have to come apart in any way - you do not even have to replace the injectors.
This kit has been dyno-tested and even street driven for almost a year now. Those of you that went to Sharks in The Mountains - you were looking at it as Tim was putting some long-distance driving miles on it.
And yes, this kit fits ALL 32v Porsche 928 - even the 85/86 models with the "Pipe Organ" intake! (you guys just ran out of excuses!)
Note that their are some add-ons that you can do if you choose to, but they are true options and can also be added later if you desire.
I am available to answer any of your questions at:
US and International: 920-485-0488
Toll-free (US Only) 877-FOR-928M
It's here! This is the successor to the Murf928 Supercharger kit, and reflects all the tricks and knowledge Tim Murphy and I have gained over the last 5 years installing SC kits on the 928.
Tim has done and excellent job of cutting to the chase - just what you need, (but everything you need), super-easy bolt on installation, and a very high reliability outcome. Stable and strong.
Engine does no have to come apart in any way - you do not even have to replace the injectors.
This kit has been dyno-tested and even street driven for almost a year now. Those of you that went to Sharks in The Mountains - you were looking at it as Tim was putting some long-distance driving miles on it.
And yes, this kit fits ALL 32v Porsche 928 - even the 85/86 models with the "Pipe Organ" intake! (you guys just ran out of excuses!)
Note that their are some add-ons that you can do if you choose to, but they are true options and can also be added later if you desire.
I am available to answer any of your questions at:
US and International: 920-485-0488
Toll-free (US Only) 877-FOR-928M
08-31-2005, 03:31 PM
#4
Developer
Thread Starter
Point of clarification: I just noticed that the two photos showing this kit show the OPTIONAL 16" front fan installed. We haven't found it neccesary up here in the nort' - but you AZ, SoCal, FL installs might want a little more air moving across the radiator - so we have this nice upgrade just for you.
The kit comes with 4 high-performance muffin fans (that you cannot see in the photos because they are on the back of the radiator) and the brackets to install them. The 16" fan in the front would be your fifth cooling fan.
The kit comes with 4 high-performance muffin fans (that you cannot see in the photos because they are on the back of the radiator) and the brackets to install them. The 16" fan in the front would be your fifth cooling fan.
08-31-2005, 03:51 PM
#7
Under the Lift
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Great stuff. I can see the small but significant refinements to the parts from what George Suennen and I and a few others installed on his car a year and a half ago. The fact that you have continuually improved the kit in this way is very admirable. More than that - it's remarkable.
So, this is 8 PSI with no intercooler and stock injectors. Wow! Is this on 91 octane? I'm very impressed. I can see it builds torque and HP slowly which helps to avoid tip-in issues. Not much of a wheel-spinner off the line (I had more torque than you show below 3K RPM before my SC was installed) but very good in the mid-range and top end. No criticism there.
Congrats to Tim and Carl!
So, this is 8 PSI with no intercooler and stock injectors. Wow! Is this on 91 octane? I'm very impressed. I can see it builds torque and HP slowly which helps to avoid tip-in issues. Not much of a wheel-spinner off the line (I had more torque than you show below 3K RPM before my SC was installed) but very good in the mid-range and top end. No criticism there.
Congrats to Tim and Carl!
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08-31-2005, 03:55 PM
#8
Originally Posted by Bill Ball
I'm very impressed. I can see it builds torque and HP slowly which helps to avoid tip-in issues. Not much of a wheel-spinner off the line (I had more torque than you show below 3K RPM before my SC was installed) but very good in the mid-range and top end. No criticism there.
08-31-2005, 04:31 PM
#12
Race Car
Originally Posted by BrendanC
Possibly no criticism, but you are saying that you your 89 had more torque below 3k when stock? More then the 310lb/ft that is available before 3k on this 8psi motor? Really? That is indubitably doubtful.
I suspect that Bill is correct. The downward direction of the torque curve down low is inverse of the usual shape of a stock torque curve. Heck, my 86'5 makes 275 @ 2700 rpm I would expect much more from an S4 with the flappy valve thingamajigger. My '86 owner manual has a HP and torque chart - anyone with an 87+ S4 manual probably has a similar chart that would put Bill's assessment within the range of plausibility.
I don't think that this really matters much nor is a really critique of the system. The SC makes power where we want it to - in a range that we can control by our gear selection. No risk of accidental wheel spin - sounds very streetable.
With regards to the kit.... Very cool!!! And to this, there is NO DOUBT!
08-31-2005, 05:00 PM
#14
Developer
Thread Starter
Red - ... but when the retail for that Vortec blower is almost 1/2 the cost of the kit all by itself.... then you see the value in all that trial-and-error and development and finely machined parts for just a little over $2000.
Also to keep in mind: short-production-run parts are always higher than long-production-run stuff. Tim has done an excellent job on pricing. When you can only tell your machinist "I need 50 of these...." and not "I need 5000 of these"... the price goes up.
Really, this is cheap. How much is your time worth for trial-and-error and frustration? Tim has done that for you.
This is about $36 per Horse. Cheap.
Also to keep in mind: short-production-run parts are always higher than long-production-run stuff. Tim has done an excellent job on pricing. When you can only tell your machinist "I need 50 of these...." and not "I need 5000 of these"... the price goes up.
Really, this is cheap. How much is your time worth for trial-and-error and frustration? Tim has done that for you.
This is about $36 per Horse. Cheap.
08-31-2005, 05:00 PM
#15
You're paying for R&D when you pay that price tag.
Sort of like the USAF paying 150 mil a pop for F-22s. The planes dont actually cost that much, almost half the price tag is in R&D and manufacturing set up costs.
The price tag can certainly be defended as reasonable, but by no means is it 'cheap', and neither is the F-22.
$5300 is a LOT of coin for most of us, and prices this kit almost completley out of most of our reach. Which again......is just like the F-22.
NITROUS is cheap. A 75 wet shot kit costing about $500 bucks with the few tidbits you need to pick up seperately delivers $6.66 per hp. Now THAT'S cheap.
Of course in the long term the cost of ownership may be higher with nitrous, cause you have to fill the tank, but then, a blower needs occasional belt replacement(they aint cheap either), and odds are the blower will cost more in overall fuel costs(which aint cheap either nowadays) in the long run.
If this kit was about 3k then i'd consider it 'cheap'. As it is, it is fairly priced to allow those involved to make a healthy(but fair) profit. Seeing as how im a capitalist, im just fine with that.
PS: Assuming a 288hp US model getting to 407hp(a 119 hp net gain for $5300) with this set up you're talking $44.50 per HP. That is not only not cheap, but more money than going most other routes, hp for hp wise.
Really besides the entry cost and the bang per buck of nitrous, NOTHING is cheap for a 928.
Finally, anyone that doesn't want to pay $5300 for a SC kit that's already bolt on ready, they can simply buy the components themselves and save a couple thousand bucks(or way more if they get a used/rebuilt compressor). Of course if you blow your engine up in the process of getting the thing to run right, then that wasn't cheap either!
Sort of like the USAF paying 150 mil a pop for F-22s. The planes dont actually cost that much, almost half the price tag is in R&D and manufacturing set up costs.
The price tag can certainly be defended as reasonable, but by no means is it 'cheap', and neither is the F-22.
$5300 is a LOT of coin for most of us, and prices this kit almost completley out of most of our reach. Which again......is just like the F-22.
NITROUS is cheap. A 75 wet shot kit costing about $500 bucks with the few tidbits you need to pick up seperately delivers $6.66 per hp. Now THAT'S cheap.
Of course in the long term the cost of ownership may be higher with nitrous, cause you have to fill the tank, but then, a blower needs occasional belt replacement(they aint cheap either), and odds are the blower will cost more in overall fuel costs(which aint cheap either nowadays) in the long run.
If this kit was about 3k then i'd consider it 'cheap'. As it is, it is fairly priced to allow those involved to make a healthy(but fair) profit. Seeing as how im a capitalist, im just fine with that.
PS: Assuming a 288hp US model getting to 407hp(a 119 hp net gain for $5300) with this set up you're talking $44.50 per HP. That is not only not cheap, but more money than going most other routes, hp for hp wise.
Really besides the entry cost and the bang per buck of nitrous, NOTHING is cheap for a 928.
Finally, anyone that doesn't want to pay $5300 for a SC kit that's already bolt on ready, they can simply buy the components themselves and save a couple thousand bucks(or way more if they get a used/rebuilt compressor). Of course if you blow your engine up in the process of getting the thing to run right, then that wasn't cheap either!