F/S: Murf Stage I Supercharger Kit - Initial Post
04-11-2009, 04:40 PM
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F/S: Murf Stage I Supercharger Kit - Initial Post
The time has come to part with my Murf Stage 1 supercharger kit due to changing economics 
.... I bought this kit from Tim Murphy himself in mid-2007. Finally got it installed and running October that year. This is the 32-valve S4 kit that fits 1987 and later 928 S4's. Mine was installed on my 1988 928 S4 auto (*which is going up for sale in a couple of weeks as soon as I finish the intake reinstall after some pesky vacuum leaks - see avatar*). The kit has about 3,500 miles on it and was used for an occasional commute, weekend fun vehicle (not raced). I was religious about all installation instructions, procedures and only the best oils, etc (Mobile 1 20-50).
There are couple of upgrades: 1) I replaced the plastic blow off valve that came with the kit (Bosche/Audi/VW version) with a race quality polished one (pictured). I replaced the original kit tube from the s/c head unit to the MAF intake (the blue hose) with aircraft quality silicon hose, and I'm including 2 additional smaller pulleys (7 lb. boost, 15 lb. boost) for those inclined to experiment (I never got around to it, and BE CAREFUL about denotation for the smaller pulleys - recommend larger injectors, remapped fuel, etc.). I had a bung welded onto the intake tube for a boost gauge (see pic.) that you can either plug, or for an additional $150, I'll add the boost gauge and tubing to attach it. I will also send instructions (Murf's version) and will bag/tag the little bits. When installed, a proper running 928 will make high 300HP to the rear wheels (about 355HP/400TQ at 5 lbs. boost). I prefer to sell to the 928 mechanically inclined, but I had no prior 928 experience (and weekend home mechanic background when I installed it) and although it took time, is very doable (I did mine in the driveway).
I'm posting here first before resorting to Craigslist/EBay at a price of $2,850 (roughly 1/2 the original price) - as is, no warranties. No negotiations, final price. You pay shipping. I would prefer PayPal, or of course cash. If you're in the northern CA area, I can arrange to meet (I live in Santa Rosa - can meet anywhere as far south as San Jose, or east to Sacramento). I'll be in and out this weekend (it's Easter), so I may not reply immediately. Thanks.
.... I bought this kit from Tim Murphy himself in mid-2007. Finally got it installed and running October that year. This is the 32-valve S4 kit that fits 1987 and later 928 S4's. Mine was installed on my 1988 928 S4 auto (*which is going up for sale in a couple of weeks as soon as I finish the intake reinstall after some pesky vacuum leaks - see avatar*). The kit has about 3,500 miles on it and was used for an occasional commute, weekend fun vehicle (not raced). I was religious about all installation instructions, procedures and only the best oils, etc (Mobile 1 20-50). There are couple of upgrades: 1) I replaced the plastic blow off valve that came with the kit (Bosche/Audi/VW version) with a race quality polished one (pictured). I replaced the original kit tube from the s/c head unit to the MAF intake (the blue hose) with aircraft quality silicon hose, and I'm including 2 additional smaller pulleys (7 lb. boost, 15 lb. boost) for those inclined to experiment (I never got around to it, and BE CAREFUL about denotation for the smaller pulleys - recommend larger injectors, remapped fuel, etc.). I had a bung welded onto the intake tube for a boost gauge (see pic.) that you can either plug, or for an additional $150, I'll add the boost gauge and tubing to attach it. I will also send instructions (Murf's version) and will bag/tag the little bits. When installed, a proper running 928 will make high 300HP to the rear wheels (about 355HP/400TQ at 5 lbs. boost). I prefer to sell to the 928 mechanically inclined, but I had no prior 928 experience (and weekend home mechanic background when I installed it) and although it took time, is very doable (I did mine in the driveway).
I'm posting here first before resorting to Craigslist/EBay at a price of $2,850 (roughly 1/2 the original price) - as is, no warranties. No negotiations, final price. You pay shipping. I would prefer PayPal, or of course cash. If you're in the northern CA area, I can arrange to meet (I live in Santa Rosa - can meet anywhere as far south as San Jose, or east to Sacramento). I'll be in and out this weekend (it's Easter), so I may not reply immediately. Thanks.
04-11-2009, 04:57 PM
#2
Thats a killer price for just the head unit and the bracket - let alone the fact you get everything else.
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gear jammer 928 (05-27-2023)
04-11-2009, 05:50 PM
#3
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I want that. Let me see what I can pull together.
I can sell my extra 3-piece wheels and GTS front brake kit and be over halfway there. Problem is this kit won't last long.
FWIW, this is not me calling dibs.
I can sell my extra 3-piece wheels and GTS front brake kit and be over halfway there. Problem is this kit won't last long.
FWIW, this is not me calling dibs.
04-11-2009, 08:15 PM
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Great price, and you're close to me.....Hmmmm, I could sell the spare 5spd transmission, the spare GT CS wheels....some other bits and goodies....
Just dreaming, carry on...
Rich
04-11-2009, 08:32 PM
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Sorry to hear that economics is forcing you away from your 928. This is a killer deal on the Murph kit, especially considering the extras you include.
If you still have your car, which I recall was a nice one, on May 9th, please come to Sharks in the Park IX and put up a for sale sign. Your SC kit should be gone momentarily.
If you still have your car, which I recall was a nice one, on May 9th, please come to Sharks in the Park IX and put up a for sale sign. Your SC kit should be gone momentarily.
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04-12-2009, 01:25 AM
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Just happend to sign on actually. A couple of glasses of wine helps as well.
In all seriousness though, i will take it.It may sit in a box for a while but the price of a decent S4 or 86.5 these days and this to bolt on for over 450hp (you guys are WAY TOO conservative
....well, may be not Tom 
) is too good of a deal to pass. I never looked at the time of the post Tom...Dang.....8.5hrs! i saw it and replied in 3 minutes!
Ok..so i put the CS on the front...it feeds the TS from the back right...anyone have the writie up for that?....
04-12-2009, 09:47 PM
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Thanks to all for the nice responses. For those that have PM'ed me., I will be available starting tomorrow (Monday) for follow up (Easter turned out to be much busier that I thought). I do honor first come, first serve, asking price policy. And yes, it was closer to 400hp at the rear wheels, not 300....
- Ray
- Ray