 » Site Navigation | | | | » Recent Threads | | | My 318ti build 05-21-2024 04:48 PM 05-21-2024 04:48 PM 0 Replies, 1,168 Views | |  |  |  | |  04-26-2006, 04:29 AM | #1 | | doesn't care about you. Join Date: Aug 2004 Location: Denver, CO Posts: 3,925 |  DASC + Alcohol Injection = Bad news!!
Pulled the supercharger today to send it out for a rebuild. Video of what happened: http://180customs.net/video/DASC-Rotors2.wmv __________________ 
'99 Dinan M3 |  |  | | 04-26-2006, 04:57 AM | #2 | | Senior Member Join Date: Dec 2005 Location: Plano Texas Posts: 206 |
I must say that the beer on top of the fuse box sets the whole car off!!  __________________
K&N Cone Filter with Heat Shield, Racing Dynamics Strut bar, Blisten yellow sport suspension, Clears all around, Angel eyes, Dinan Engine Chip, Infinity BassLink 10" Sub, Lightweight Aluminum Flywheel | | | | | 04-26-2006, 05:04 AM | #3 | | aka Stabby Join Date: Nov 2004 Location: Mead, CO Posts: 5,336 |
i'm just surprised it was only a one beer job!  good info Dusten, even though it's bad news, at least you know a rebuild will get it back up to full boost. then it's time for nick's stage 3 __________________ 1996 318ti, California package, 267k miles
current mods: bilstein sports, bavauto springs, e30 m3 LCABs, solid metal ball joints, bavauto RSMs w/reinforcements, e30 3.73 LSD & halfshafts, supersprint cat-back exhaust, turner rear sway bar reinforcements, IE poly subframe & RTABs + camber/toe kits, powdercoated e36 32x front calipers, sport mirrors, H&R 28mmF/19mmR sway bars, x-brace, auto solutions SSK w/poly bushing upgrade, BMW CD43 head unit, DICE HD Radio w/iPod integration and "stealth" HD antenna, staggered style 68s, orange electronic TPMS, leather arm rest, JT Designs metal undertray
acquired and awaiting install: heated seat kit, cali top switch relo, lumbar support kit, park distance control kit, heated washer nozzle kit, m-coupe rear subframe, trailing arms, differential, and halfshafts, m-coupe front/rear brakes with master cylinder, under hood light kit, mud flaps, rear sun blind, auto-dimming rear view mirror, tilt steering wheel retrofit, apexcone 5000K HIDs with 55W ballasts
2002 X5 4.4 Sport Package, 53.5k miles
Current Mods: e46 m3 steering wheel | | | | | 04-26-2006, 07:49 AM | #4 | | Senior Member Join Date: May 2005 Location: CG68 Posts: 280 |
Love the choice of music.  | | | | | 04-26-2006, 09:28 AM | #5 | | Senior Member Join Date: Nov 2005 Location: çî†ÿ øf åNgëL§, CA Posts: 5,314 |
i dont understand what happen here? can u plz explain for those who may not know either? | | | | | 04-26-2006, 12:27 PM | #6 | | Senior Member Join Date: May 2005 Location: England, UK Posts: 1,288 |
the alcohol injection stripped the teflon coating from the internal supercharger components... which is why i assume Dusten uses water only now ? __________________
1995 BMW 316i Cosmos Black
Mods: • Magnex Cat-Back Exhaust • Smoked Corner Lights + Repeators • M3 17" Wheels • De-Baffled Air Box • AC HandBrake Handle and Gear Knob • DEPO Euro Epsiloids + Predator Chronium Rings • Chrome Interior bits •IE Poly-Urethane RSFMs • Kenwood Power Series Audio • Powder Coated e36 325 Front Callipers • Sports Seats | | | | | 04-26-2006, 12:49 PM | #7 | | Senior Member Join Date: Jan 2005 Location: boston Posts: 142 |
That blows!!! nice music! Got to Love the beer sitting on your fuse box. I bet you had a few after you saw that.. __________________
HIOP TWINSCREW w/aftercooler water to air,
3.73 lsd,ported headdone,performence valve springs w/titanium retainersinstalled..nitrous kitinstalled fun fun
X brace installed5th injector w/ piggyback controler, high flow cat | | | | | 04-26-2006, 01:15 PM | #8 | | doesn't care about you. Join Date: Aug 2004 Location: Denver, CO Posts: 3,925 |
Quote: | Originally Posted by cali-ti i'm just surprised it was only a one beer job! good info Dusten, even though it's bad news, at least you know a rebuild will get it back up to full boost. then it's time for nick's stage 3 | It was a two beer job, one Strongbow and one New Glarus Fat Squirrel. I knew the coating was gone, that's why I removed it, I just wasn't sure HOW MUCH was going to be missing. I was a little surprised to see it completely gone, but I'm moving in the right direction. When I get it back next week I should be back up to 9psi with the pulley I have now, that'll be a good 30-35hp increase over what I have now!! NickG's Stage 3 software is next! I'm glad you guys liked the music, it took a while to pick the perfect song for this. __________________
'99 Dinan M3 | | | | | 04-26-2006, 01:24 PM | #9 | | Senior Member Join Date: May 2005 Location: England, UK Posts: 1,288 |
btw - good tune. might have to get the album out on my drive home now....
Stronbow!!! mmmmmmmmmmmmmmmm Quench your thirst!!
you putting the standard intajke on while its rebuilt or leaving it off the road ? __________________
1995 BMW 316i Cosmos Black
Mods: • Magnex Cat-Back Exhaust • Smoked Corner Lights + Repeators • M3 17" Wheels • De-Baffled Air Box • AC HandBrake Handle and Gear Knob • DEPO Euro Epsiloids + Predator Chronium Rings • Chrome Interior bits •IE Poly-Urethane RSFMs • Kenwood Power Series Audio • Powder Coated e36 325 Front Callipers • Sports Seats | | | | | 04-26-2006, 01:34 PM | #10 | | doesn't care about you. Join Date: Aug 2004 Location: Denver, CO Posts: 3,925 |
Quote: | Originally Posted by stormos btw - good tune. might have to get the album out on my drive home now....
Stronbow!!! mmmmmmmmmmmmmmmm Quench your thirst!!
you putting the standard intajke on while its rebuilt or leaving it off the road ? | Leaving it off the road. Superchargertech.com said they can do same day turn around on the charger, so I should be back on the road early next week. Just in time too, the first SOLO events start May 5th! __________________
'99 Dinan M3 | | | | | 04-26-2006, 05:48 PM | #11 | | Junior Member Join Date: Apr 2006 Location: Colorado Springs, CO Posts: 25 |
I'm very curious about this, as we have been injecting water-methanol through literally thousands and thousands of Eatons for years and years. Are the superchargers from Downing new or rebuilt? Do you know what the production date is?
Not saying it couldn't happen that way, and not arguing, just trying to understand more. Knowing that the coatings on some eatons failed with nothing but air going through them is why I am curious about blaming the alcohol specifically. | | | | | 04-26-2006, 06:31 PM | #12 | | doesn't care about you. Join Date: Aug 2004 Location: Denver, CO Posts: 3,925 |
Quote: | Originally Posted by SnowTech.3 I'm very curious about this, as we have been injecting water-methanol through literally thousands and thousands of Eatons for years and years. Are the superchargers from Downing new or rebuilt? Do you know what the production date is?
Not saying it couldn't happen that way, and not arguing, just trying to understand more. Knowing that the coatings on some eatons failed with nothing but air going through them is why I am curious about blaming the alcohol specifically. | Alcohol and Methanol are two completely different beasts. The Eaton blower I have is either a gen 1 or a gen 2 with epoxy coated rotors. It was brand new (not rebuilt) and carries a Magnuson part number of MP62, you might be able to talk to them about the coating or build date. I'm pretty sure my problem started with DENATURED ALCOHOL. This stuff is sold as a paint stripper, so it doesn't surprise me that it stripped the epoxy off the rotors. __________________
'99 Dinan M3 | | | | | 04-26-2006, 08:16 PM | #13 | | Senior Member Join Date: Mar 2005 Location: Portland Or Posts: 2,666 |
Water/Alky injection goes AFTER the compressor.
ANY compressor.
It will ruin the impellers in a turbo as well.
Dave __________________
Dave - PDX
1995 318ti - Active Black and Tan.
2005 330xi - Mtech 1 - 6spd - Orient Blue/Black | | | | | 04-26-2006, 08:26 PM | #14 | | Junior Member Join Date: Apr 2006 Location: Colorado Springs, CO Posts: 25 |
On a turbo or centrifugal, absolutely after the compressor. The impellor blades will eventually erode. Period.
On a positive displacement compressor, you can inject before the compressor, no problem. We have literally had that configuration on thousands and thousands and thousands of blowers for years and years and tens of thousands (probably hundreds of thousands) of miles.
You are free to mount it after the compressor in any installation, though distribution may be more of a concern on some manifolds/installations. Nothing that can't be engineered around. | | | | | 04-26-2006, 10:29 PM | #15 | | Moderator Join Date: Jun 2003 Location: Bouncing off the rev limiter in CT! Posts: 3,156 |
Quote: | Originally Posted by DustenT Alcohol and Methanol are two completely different beasts. | Methanol is a type of Alcohol, distilled from wood. Ethanol is also an alcohol, distilled from grain. Quote: | Originally Posted by DustenT I'm pretty sure my problem started with DENATURED ALCOHOL. This stuff is sold as a paint stripper, so it doesn't surprise me that it stripped the epoxy off the rotors. | Denatured alcohol is a blend (typically 50% ethanol, 50% Methanol- Kleen Strip brand has trace other chemicals as well) of alcohols, and is a solvent, but not a very good paint stripper... Ethanol has a higher burning (flame) temperature than Methanol. I'm not sure which is more volatile (evaporates faster) but my guess is Ethanol. So, pour cheap vodka into the reservoir for best results... It could simply be the velocity of the fluid, rather than the 'solvent' effect. Have you ever seen a water jet before? | | | | | |
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