Drivetrain Crank pulley survey
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6th Gear
Joined: Nov 2005
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From: Houston
Crank pulley survey
Somebody brought up this idea in the supercharger pulley thread and since I had some time, I threw together a table. You guys can PM or post on this thread and I will update the table. I'll probably update the first post with quotes of the problems in the first post. If you guys have any feedback, I'm open to suggestions.
Updated: 15 February 2006, 5:04PM
35,000 mi on car now.
at 3500, Randy inst. 15% pulley, no problems at all
30,500 installed 2% Alta pulley. Non-Mini guy did it. There was immediate slight vibration/rattle and roughness at low revs, like at takeoff or lugging engine.
32.500 new belt tensioner installed. (on warranty).This reduced the vibration a little. but it was still there and a concern.
34,000 I personally Ireinstalled a 2005 stock crank pulley that Randy gave me.
Updated: 15 February 2006, 5:04PM
Originally Posted by mdsbrain
0% lightweight crank on for 3k miles. I removed it due to car vibrations and the ecu couldn't keep up with the engines revs to know when to shift.
Originally Posted by latte hiatus
Alta 15% pulley and M7 2% crank pulley, approximately 1000 miles, some vibration around 2800 - 3300 RPM, and some pre-ignition pinging (probably due to the combination of the extra boost and poor CA petro).
Originally Posted by aokdoug
ran 19% for 2 years. no problems. 20,000k
installed alta crank pulley & new gator belt 2000k ago.
last week had lost of power. pulled over &saw that i hade lost a belt.
i thought no problem as i carry a belt&the tool with me for just incase.
jacked car up &removed finder liner& to my dismay saw all the pulleys were trash. the adiler pulley stop had failed &allowed it to foul it all up. had car towed 200 miles to dealer (ferman in tampa) &found out the super-charger
had locked-up causing the mess. of course no warrantty because of mods.
installed alta crank pulley & new gator belt 2000k ago.
last week had lost of power. pulled over &saw that i hade lost a belt.
i thought no problem as i carry a belt&the tool with me for just incase.
jacked car up &removed finder liner& to my dismay saw all the pulleys were trash. the adiler pulley stop had failed &allowed it to foul it all up. had car towed 200 miles to dealer (ferman in tampa) &found out the super-charger
had locked-up causing the mess. of course no warrantty because of mods.
Originally Posted by aokdoug
standard light weight alta with 19% helix.
changed to a alta 19% & a new standart alta light weight.
changed to a alta 19% & a new standart alta light weight.
Originally Posted by SteveS
35,000 mi on car now.
at 3500, Randy inst. 15% pulley, no problems at all
30,500 installed 2% Alta pulley. Non-Mini guy did it. There was immediate slight vibration/rattle and roughness at low revs, like at takeoff or lugging engine.
32.500 new belt tensioner installed. (on warranty).This reduced the vibration a little. but it was still there and a concern.
34,000 I personally Ireinstalled a 2005 stock crank pulley that Randy gave me.
Sorry about the delay but we wanted to have all of our ducks in a row on this one . In testing the M62 we discovered a entirely new issue . We have joined the ranks of a few cars that have discovered that high RPM and light weight crank pulleys do not play well together . I have a red line of 7200 and have not had a issue and I have many miles on this as it was our first unit built. Based on this recent development we are cautioning anyone with raised rev limits to be cautious when thinking about lightweight crank pulleys.The car in question has a custom software pkg which allows for a red line of 8250 RPM and the car has hit that many times in the months prior to the m62 install. Well to be specific the oil pump gear decided it had enough and let go thankfully at idle but some pieces bounced around in the oil pan, got into the crank and took out a piston which put a hurt on some of the internals. The motor is being rebuilt as we speak and we hope to have more info as soon as possible. Again sorry for the delay but we wanted to do a through post mortem and make absolutely sure it was not M62 related.
Randy
M7 Tuning
Randy
M7 Tuning
-15% Alta installed at 5K 2 1/2 years ago, Randy Webb did it. +3% Alta installed at 21K by Khuevo. I wrote a DYI for this installation. +5% Altanator installed at 22K by myself. No problems. No issues. Some vibration after the 3%, but not a lot more than what was there since I installed the engine damper that ties the engine to the frame. I do not race, but I drive like I stoled it sometimes.
Bomboasy
Bomboasy
5th Gear
Joined: Jun 2003
Posts: 694
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From: Naw-folk, VA
Alta, 2% (with 15%) 4000 miles, ZD. (Zero Defects)
and MDSBrain... you're blaming the pulley?! Aren't you the fella with the whole engine out for a bad block?
Vibrations indeed!
and MDSBrain... you're blaming the pulley?! Aren't you the fella with the whole engine out for a bad block?
Vibrations indeed!
Trending Topics
LOL
I have THE puley that was on Mdsbrains car on my 04 MCS.
I bought it off of him after he took it off.
I have ABSOLUTELY NO vibration problems in my car!
I think you also should add wther or not the cars are autos or stick, I believe Mds is the only one ive heard of with a crank pulley problem, and he is the only auto in the group listed.
I have THE puley that was on Mdsbrains car on my 04 MCS.
I bought it off of him after he took it off.
I have ABSOLUTELY NO vibration problems in my car!
I think you also should add wther or not the cars are autos or stick, I believe Mds is the only one ive heard of with a crank pulley problem, and he is the only auto in the group listed.
2nd Gear
Joined: Jan 2005
Posts: 86
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From: Columbia Hills, Mars
Originally Posted by MINIotaple
Should I include what size supercharger pulley it's paired with? What about self-installation vs. professional installation?
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6th Gear
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From: Houston
Originally Posted by not-so-rednwhitecooper
LOL
I have THE puley that was on Mdsbrains car on my 04 MCS.
I bought it off of him after he took it off.
I have ABSOLUTELY NO vibration problems in my car!
I have THE puley that was on Mdsbrains car on my 04 MCS.
I bought it off of him after he took it off.
I have ABSOLUTELY NO vibration problems in my car!
Originally Posted by not-so-rednwhitecooper
I think you also should add wther or not the cars are autos or stick, I believe Mds is the only one ive heard of with a crank pulley problem, and he is the only auto in the group listed.
5th Gear
Joined: Feb 2005
Posts: 654
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From: East SF Bay Area, CA
Alta 15% pulley and M7 2% crank pulley, approximately 1000 miles, some vibration around 2800 - 3300 RPM, and some pre-ignition pinging (probably due to the combination of the extra boost and poor CA petro).
I don't really consider those to be significant problems, though the pinging definitely needs to be rectified, I can live with a slight vibration as a trade-off for the excellent throttle response and overall performance from the lightened/oversized crank pulley.
I don't really consider those to be significant problems, though the pinging definitely needs to be rectified, I can live with a slight vibration as a trade-off for the excellent throttle response and overall performance from the lightened/oversized crank pulley.
No SC pulley on mine.
MDS's 0% crank.
about 1500 miles. no problmes whatsoever.
as far at the tranny goes, i think MDS made a point, about the auto tranny thinking the engine is revving faster than it should (or should i say faster than stock) and its confusing the computer.
i dont do FWD cars often, so im not sure if that can be calculated in , but its something to consider.
MDS's 0% crank.
about 1500 miles. no problmes whatsoever.
as far at the tranny goes, i think MDS made a point, about the auto tranny thinking the engine is revving faster than it should (or should i say faster than stock) and its confusing the computer.
i dont do FWD cars often, so im not sure if that can be calculated in , but its something to consider.
Originally Posted by not-so-rednwhitecooper
No SC pulley on mine.
MDS's 0% crank.
about 1500 miles. no problmes whatsoever.
as far at the tranny goes, i think MDS made a point, about the auto tranny thinking the engine is revving faster than it should (or should i say faster than stock) and its confusing the computer.
i dont do FWD cars often, so im not sure if that can be calculated in , but its something to consider.
MDS's 0% crank.
about 1500 miles. no problmes whatsoever.
as far at the tranny goes, i think MDS made a point, about the auto tranny thinking the engine is revving faster than it should (or should i say faster than stock) and its confusing the computer.
i dont do FWD cars often, so im not sure if that can be calculated in , but its something to consider.
well it must mean somethen when i put the pulley MDS had on his car on my car and you get two different outcomes with the same pulley.
that leads me to believe that this might be a tranny issue also.
that leads me to believe that this might be a tranny issue also.
6th Gear
Joined: Aug 2005
Posts: 1,335
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From: Tucson, AZ
Originally Posted by ///ACS330Ci
Anyone know where I can find a crank pulley DIY?
TIA
TIA
Seriously, we don't need no stinking DIY. Bentley, blowtorch to heat up the shaft and we can do it. Seriously.
5th Gear
Joined: Aug 2004
Posts: 1,079
Likes: 1
From: AZ
Originally Posted by jfunkmd
Come on Steve, keep it ON TOPIC. j/k
Seriously, we don't need no stinking DIY. Bentley, blowtorch to heat up the shaft and we can do it. Seriously.
Seriously, we don't need no stinking DIY. Bentley, blowtorch to heat up the shaft and we can do it. Seriously.
I wouldn't have to ask for a DIY if you would have paid attention when Mr. Webb installed yours
6th Gear
Joined: Sep 2004
Posts: 5,149
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Originally Posted by MINIotaple
Somebody brought up this idea in the supercharger pulley thread and since I had some time, I threw together a table. You guys can PM or post on this thread and I will update the table. I'll probably update the first post with quotes of the problems in the first post. If you guys have any feedback, I'm open to suggestions.
Updated: 1 April 2006, 2:44PM
Updated: 1 April 2006, 2:44PM
Alta 15% pulley (56,000 miles) no problems - now 88,000 miles
m7 2% crank pulley (9,000 miles) no problems - now 32,000 miles
Have MTH ECU flash with 7200 RPM rev limit - I am rarely above 6500 - got flashed back to to stock after a MINI recall - 6750 RPM limit
m7 2% crank pulley (9,000 miles) no problems - now 32,000 miles
Have MTH ECU flash with 7200 RPM rev limit - I am rarely above 6500 - got flashed back to to stock after a MINI recall - 6750 RPM limit
Last edited by CFMINI; Jul 24, 2007 at 12:55 PM. Reason: Time flies - and so does my MCS