 » Site Navigation | | | | » Recent Threads | | | |  |  |  |  09-06-2006, 07:26 PM | #1 | | Senior Member Join Date: Aug 2005 Location: Southern Cal Posts: 113 |  4.1?
is 4.1 too short for a canyon car? |  |  | | 09-07-2006, 03:10 AM | #2 | | TRETEN IRGENDEINES ESELS Join Date: Aug 2004 Location: Rhode Island Posts: 3,687 |
Quote: Originally Posted by jbxblitz  is 4.1 too short for a canyon car? | 4.1 what?  __________________ 98 Avus Blue 318 ti Active
clear outs all around,stealth turning signals,blue led interior lights, 35% tinted windows,K&N air filter, 12" Kenwood Sub, MTX Thunder Amp,Alpine cd changer, Leatherz Armrest,ACS Pedals/Handbrake/FloorMats & Vitesse Tuning Carbon Fiber B-Pillars/CF Spark Plug Cover, New 16" MSW Typer 14 Rims on Goodyear Triple Treds 
www.myspace.com/avusblueti | | | | | 09-07-2006, 04:17 AM | #3 | | Senior Member Join Date: May 2006 Location: Canada Posts: 182 |
I have no idea what you mean, what is a canyon car, what is 4.1...what is too short... | | | | | 09-07-2006, 05:11 AM | #4 | | Senior Member Join Date: Mar 2005 Location: Portland Or Posts: 2,666 |
4.1 rear gears?
If so there are plenty of RPM calculators on the net.
Punch in tire diameter, rear end gear ratio, and the
top gear in the tranny ratio, and youll find your answer...
I'd want 70MPH to be under 4000, any higher and the
freeway noise will suck.
Dave __________________
Dave - PDX
1995 318ti - Active Black and Tan.
2005 330xi - Mtech 1 - 6spd - Orient Blue/Black | | | | | 09-07-2006, 05:48 AM | #5 | | Senior Member Join Date: Aug 2005 Location: Southern Cal Posts: 113 |
Sorry about that... 4.1 final drive ratio.. the diff. and canyon car, n/m.. | | | | | 09-07-2006, 06:13 AM | #6 | | Senior Member Join Date: Nov 2004 Location: Minneapolis Posts: 1,587 |
I think a 4.1 would be about 3875 RPMs in 5th gear @ 70 mph. Or so says the gearing calculator I found..... | | | | | 09-07-2006, 09:10 PM | #7 | | Senior Member Join Date: Aug 2005 Location: Southern Cal Posts: 113 |
thanks a lot! the reason why i asked is because my friend was giving me his e30 4.1 rear lsd and the half shafts and i didn't know if i should put them on or not. | | | | | 09-08-2006, 10:44 PM | #8 | | Senior Member Join Date: Mar 2005 Location: Portland Or Posts: 2,666 |
The swap is easy enough to try that its worth a shot... I'd assume about 3 hours on a Saturday to swap parts assuming youv'e never done the rear end on a BMW> Your going from like a 3.73 to 4.11 which is just enough to REALLY feel in first and second...  Dave __________________
Dave - PDX
1995 318ti - Active Black and Tan.
2005 330xi - Mtech 1 - 6spd - Orient Blue/Black | | | | | 09-14-2006, 07:54 PM | #9 | | Senior Member Join Date: Jun 2003 Location: San Jose, CA, USA Posts: 253 |
A 4.11 should be noticibily faster. Fine for even longer trips if you don't mind 5K at 80 on the freeway. I picked up 5-7mph top speed at the front straight at Thunderhill and dropped 2 seconds off my lap times by going to a 4.44. __________________ Andy Chittum - Mad Man Motorsports | | | | | 09-14-2006, 08:54 PM | #10 | | Senior Member Join Date: Aug 2005 Location: Melbourne, Fl/Athens, AL Posts: 393 |
4.1 diff gearing will definately produce a noticable increase in acceleration. Our stock ratio is 3.45, so it's quite a jump. __________________ -Kenny
 | | | | | 09-15-2006, 08:03 PM | #11 | | Senior Member Join Date: Aug 2005 Location: Southern Cal Posts: 113 |
im sooo excited because my car is open diff right now too. __________________  | | | | | 09-15-2006, 08:41 PM | #12 | | Senior Member Join Date: Aug 2004 Location: Tyler, TX Posts: 1,022 |
Definately let us know what you think about it. I've been toying with the idea of a 3.90 or 4.10 for a while now. Gas milage be damned, full speed ahead. | | | | | 09-15-2006, 11:50 PM | #13 | | Senior Member Join Date: Mar 2005 Location: Portland Or Posts: 2,666 |
Quote: Originally Posted by Variance 4.1 diff gearing will definately produce a noticable increase in acceleration. Our stock ratio is 3.45, so it's quite a jump. | You could tune the ratio back just a little with slightly taller rubber. I'd play with a gear ratio cal and see.... Dave __________________
Dave - PDX
1995 318ti - Active Black and Tan.
2005 330xi - Mtech 1 - 6spd - Orient Blue/Black | | | | |
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