*SOLD* Very Slightly Used Murph Stage I Kit For Sale
03-04-2009, 11:25 AM
#32
Drifting
What are the differences between the Murph Stage 1 and the 928 Motorsports Stage 1?
They appear to have different cool air intakes, and somewhat different supercharges. From the supercharger on back… they appear pretty similar.
Do these systems have more or less SC whine then the twin screw? What about idle... do these sytems have trouble getting down to normal idle?
I hadn’t really looked at these before, but this is very tempting... starting with stage 1 and upgrading later to stage 2.
They appear to have different cool air intakes, and somewhat different supercharges. From the supercharger on back… they appear pretty similar.
Do these systems have more or less SC whine then the twin screw? What about idle... do these sytems have trouble getting down to normal idle?
I hadn’t really looked at these before, but this is very tempting... starting with stage 1 and upgrading later to stage 2.
03-04-2009, 11:26 AM
#33
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Jean-Louis is running a murf kit on his EuroS race car. Murf kit #35:
http://www.murf928.com/customercars.htm
If your car has the 1985 brains (versus the 84) it can be shark tuned. This is why I'm converting my 81 over to the 85 EuroS LH / EZF setup.
Jean-Louis is using the 1984 brains with a piggy back system to control ignition.
It would be easier to list what they have in common, they do not share any parts (unless you count things like zip ties 
)
The 928 Motorsports kit was developed by Carl, the Murf kit is 100% Murf928.
Carl has been marketing Tim's kits for a few years now, he has been a big asset to the expansion of the Murf product.
The #1 difference is The Murf kits come with the option of stock fuel pressure and custom Shark Tuned chips.
The Murf kit is also using a Vortec Supercharger which has been around for a very long time, is one of the standards in the supercharger world. The new Si-Trim included with this (and all current stage 1 kits) is the next evolution of this design.
There are multiple Murf kits running open road races, and PCA / SCCA track events. To say it's a fully tested and sorted out kit is an understatement.
I cannot give an honest answer on noise. I've stood between Tim's car and Andrew's car with both of them running (with the hood closed). I do not recall much noise from either unit. I think Bill could give a better answer on that one.
As for idle, you would never know it has the blower installed. Even my L-Jet car comes back to idle like a 100% stock 928.
http://www.murf928.com/customercars.htm
If your car has the 1985 brains (versus the 84) it can be shark tuned. This is why I'm converting my 81 over to the 85 EuroS LH / EZF setup.
Jean-Louis is using the 1984 brains with a piggy back system to control ignition.
)The 928 Motorsports kit was developed by Carl, the Murf kit is 100% Murf928.
Carl has been marketing Tim's kits for a few years now, he has been a big asset to the expansion of the Murf product.
The #1 difference is The Murf kits come with the option of stock fuel pressure and custom Shark Tuned chips.
The Murf kit is also using a Vortec Supercharger which has been around for a very long time, is one of the standards in the supercharger world. The new Si-Trim included with this (and all current stage 1 kits) is the next evolution of this design.
There are multiple Murf kits running open road races, and PCA / SCCA track events. To say it's a fully tested and sorted out kit is an understatement.
I cannot give an honest answer on noise. I've stood between Tim's car and Andrew's car with both of them running (with the hood closed). I do not recall much noise from either unit. I think Bill could give a better answer on that one.
As for idle, you would never know it has the blower installed. Even my L-Jet car comes back to idle like a 100% stock 928.
03-04-2009, 12:08 PM
#34
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Next time he calls, say hello for me Bill. To any one who might be interested in what Bill is offering, I can say it is a top-notch system that installs easily. I did mine in 05 and I will never forget the first ride. My old car was gone and the new one was ready for all-comer's! BTW Great price on this.
03-04-2009, 12:50 PM
#35
Supercharged
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What are the differences between the Murph Stage 1 and the 928 Motorsports Stage 1?
They appear to have different cool air intakes, and somewhat different supercharges. From the supercharger on back… they appear pretty similar.
Do these systems have more or less SC whine then the twin screw? What about idle... do these sytems have trouble getting down to normal idle?
I hadn’t really looked at these before, but this is very tempting... starting with stage 1 and upgrading later to stage 2.
They appear to have different cool air intakes, and somewhat different supercharges. From the supercharger on back… they appear pretty similar.
Do these systems have more or less SC whine then the twin screw? What about idle... do these sytems have trouble getting down to normal idle?
I hadn’t really looked at these before, but this is very tempting... starting with stage 1 and upgrading later to stage 2.
This is a great price on a great system. You would not be sorry if you purchased it.
Idle is not a problem on either system.
Noise... IMO TIm's kit has a little SCer whine at idle. You can tell it's not 100% stock.
On my car it's less perceptible untill you step on it then the twin screw whine is very noticable.... make that addictive. Speaking of which... it's nice outside. Time to go for a drive. 
03-04-2009, 01:08 PM
#36
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Kurt-
This is a great price on a great system. You would not be sorry if you purchased it.
Idle is not a problem on either system.
Noise... IMO TIm's kit has a little SCer whine at idle. You can tell it's not 100% stock. On my car it's less perceptible untill you step on it then the twin screw whine is very noticable.... make that addictive. Speaking of which... it's nice outside. Time to go for a drive.
This is a great price on a great system. You would not be sorry if you purchased it.
Idle is not a problem on either system.
Noise... IMO TIm's kit has a little SCer whine at idle. You can tell it's not 100% stock.
On my car it's less perceptible untill you step on it then the twin screw whine is very noticable.... make that addictive. Speaking of which... it's nice outside. Time to go for a drive. The sound is addictive, so is the rush of 12 PSI.
I want one for my 928, but I am poor.
Of course all 928 owners would have a lot more money if they were not 928 owners.
03-04-2009, 01:13 PM
#37
Administrator - "Tyson"
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Andrew - the last few times you were here the T-Trim was on Rachel's car. Which is louder than the S-trim that comes with this kit.
03-04-2009, 01:52 PM
#38
Under the Lift
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03-04-2009, 01:55 PM
#39
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This new design Vortex unit is MUCH quieter than the T-trim. Also, I like that it has an internal oil supply for the bearing so there is no need to install the oil supply and drain that the other Vortex units require.
03-04-2009, 02:11 PM
#40
Race Director
Gee thanks...... for some reason I don't see that helping my "sales pitch" very much
As much as this is a great deal and it would be fun to play with on my 928's....bottom line is I don't have the $$$$ right now & I already have a "fast" street car.... :>(
03-04-2009, 03:19 PM
#41
Drifting
Looking back on most of the Supercharger threads, I understand why I didn’t realize Tim and Carl have different systems. Most of the discussions tend to revolve around Murphs and DR setups, with very little mention about the Raptor based system. Then add in 928 Motorsports selling them both… hence the confusion. If I’m not mistaken, I have yet to see the motorsports version while I’ve scene several DR and Murphs at SITM, Hell, and Taj Ma Garage.
How easy is it to build upon this stage 1 system? Will an IC just bolt right on somewhere downstream?
How easy is it to build upon this stage 1 system? Will an IC just bolt right on somewhere downstream?
03-04-2009, 03:33 PM
#42
Race Car
While I am no expert on that system, it does look like the intercooler can be added very easily judging by its position in the back corner of the engine bay.
Dan
'91 928GT S/C
475hp/460lb.ft
Dan
'91 928GT S/C
475hp/460lb.ft
03-04-2009, 04:43 PM
#43
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Dan is correct, the installation of the actual IC is a piece of cake. There are a few more pieces that go along with it:
1. New motor for the windshiled washer reservoir. To do this job right (in my opinion) it involves some cleaning since most of these bottles / necks are nasty. I spent a good hour + cleaning up mine (and installed a new neck). Is this necessary? No, but I'm picky like that.
2. Run fluid lines from the washer reservoir to the heat exchanger in the nose, up to the IC and back to the reservoir. All hoses / cooler is included with the stage 3 kit.
3. Swap out the injectors for Bosch / Ford Racing 42lb
4. Remove the FMU - reinstall stock fuel lines...... This is where some stage 1 customers skip the FMU and go straight to the 42lb injectors.
5. Install shark tuned LH / EZK chips.
I always recommend to everyone (even non-supercharger customers) to replace all fuel lines. Too many 928's have old / crusty fuel lines, not a good combination.
I also recommend new spark plugs - good old fashioned copper, single electrode spark plugs - one heat range colder than stock. These should not cost more than $2 each, assuming your local parts store has them (many do not carry them, atleast up here).
It's also a good idea to do a baseline before dyno. It's fun to have a good comparison and it can also show some issues that should be addressed before the install.
1. New motor for the windshiled washer reservoir. To do this job right (in my opinion) it involves some cleaning since most of these bottles / necks are nasty. I spent a good hour + cleaning up mine (and installed a new neck). Is this necessary? No, but I'm picky like that.
2. Run fluid lines from the washer reservoir to the heat exchanger in the nose, up to the IC and back to the reservoir. All hoses / cooler is included with the stage 3 kit.
3. Swap out the injectors for Bosch / Ford Racing 42lb
4. Remove the FMU - reinstall stock fuel lines...... This is where some stage 1 customers skip the FMU and go straight to the 42lb injectors.
5. Install shark tuned LH / EZK chips.
I always recommend to everyone (even non-supercharger customers) to replace all fuel lines. Too many 928's have old / crusty fuel lines, not a good combination.
I also recommend new spark plugs - good old fashioned copper, single electrode spark plugs - one heat range colder than stock. These should not cost more than $2 each, assuming your local parts store has them (many do not carry them, atleast up here).
It's also a good idea to do a baseline before dyno. It's fun to have a good comparison and it can also show some issues that should be addressed before the install.
03-04-2009, 05:24 PM
#44
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Man, I want this. Bill, do you accept a payment plan... $1 per day for life. Interested but would require pulling money out of my ****.... literally. Told the wife no more 928 stuff for a while (read a couple months 'til she forgets )
)
