 |
|
03-19-2007, 08:44 AM
|
#26
|
|
Co-Founder / Site Admin
Join Date: Jul 2004
Location: Ewing, NJ
Posts: 22,473
|
Quote:
Originally Posted by Savage_Messiah
when i went from 3.42 to 4.10 i noticed maybe a couple MPG change. Nothing that concerned me personally. A lot of people see better around town milage with (numerically) higher gears since the engine doesn't have to work as hard to get the car moving
|
Yes, when Little G went from 3.23s to 4.10s in his '02 V6/M5 he lost a few MPG on the highway, but picked up a few around town.
- Justin
__________________
1999 Camry - Beigemobile DD
2002 Suburban - Wife's DD
2004 Grand Cherokee - Not running / Project / Selling?
|
|
|
|
03-25-2007, 06:02 PM
|
#27
|
Join Date: Jun 2006
Location: Old Bridge, NJ
Posts: 932
|
Ok, so I finally found an Eaton Posi, now I'm looking for the gears. What's the difference between thick and thin, and which do you recommend.
__________________
|
|
|
|
|
03-25-2007, 09:32 PM
|
#28
|
|
Ayatollah of Rock N Rolla / Admin
Join Date: Mar 2006
Location: Parts Unknown
Posts: 12,573
|
Quote:
Originally Posted by SupermanX24
Ok, so I finally found an Eaton Posi, now I'm looking for the gears. What's the difference between thick and thin, and which do you recommend.
|
Thick is for a 2 series carrier, thin is for a 3 series.
|
|
|
|
|
03-26-2007, 08:07 PM
|
#29
|
Join Date: Dec 2004
Location: Galloway, NJ
Posts: 3,964
|
Yeah youll go with the thins if your using 3.23 or numerically higher gears. I, tho havent gotten them yet, I would go with 3.42. If your drag racing go 3.73 or 4.10, but if your autocrossing, or just looking for a better takeoff, but nothing insane, go with 3.42.
|
|
|
|
|
03-27-2007, 12:16 AM
|
#30
|
|
2007 Member of the Year
Join Date: Oct 2004
Location: Seabrook, TX
Posts: 14,281
|
I can't see how 4.10s WOULDN'T help autocross.
__________________
WF=DF
Kommandant of the ACL (Anti Canadian League)
Quote:
Originally Posted by LTb1ow
Junk the pos, spend the money on beer, acquire headache.
Same result cept this headache doesnt last months.
|
|
|
|
|
|
03-27-2007, 08:58 AM
|
#31
|
|
Co-Founder / Site Admin
Join Date: Jul 2004
Location: Ewing, NJ
Posts: 22,473
|
Quote:
Originally Posted by Savage_Messiah
I can't see how 4.10s WOULDN'T help autocross.
|
Nothing like quicker acceleration out of a corner.....
- Justin
__________________
1999 Camry - Beigemobile DD
2002 Suburban - Wife's DD
2004 Grand Cherokee - Not running / Project / Selling?
|
|
|
|
|
03-27-2007, 05:52 PM
|
#32
|
Join Date: Dec 2004
Location: Galloway, NJ
Posts: 3,964
|
well like for someone like me, driving all the way up to N. Jersey would kill gas, and yeah itd be nice for autocross, but idk about a daily driver ratio, adn dont 4.10's whine a little?
|
|
|
|
|
03-27-2007, 06:01 PM
|
#33
|
|
Ayatollah of Rock N Rolla / Admin
Join Date: Mar 2006
Location: Parts Unknown
Posts: 12,573
|
Quote:
Originally Posted by Blacdout96
well like for someone like me, driving all the way up to N. Jersey would kill gas, and yeah itd be nice for autocross, but idk about a daily driver ratio, adn dont 4.10's whine a little?
|
Whining is not associated with a particular ratio. It has to do with how well the gears are set up, and what the tooth angle is. Some gear installers just put everything in and that's that- regardless of how things like pinion depth and backlash get set. They half ass it and you get noisy gears. They will also make up ******** dismissive excuses if you press them about the noise. Good gear installers will install and tear down as many times as it takes until the measurements fall within the proper range.
Last edited by WildBillyT; 03-27-2007 at 06:04 PM.
|
|
|
|
|
03-28-2007, 01:01 PM
|
#34
|
Join Date: Jun 2006
Location: Old Bridge, NJ
Posts: 932
|
How do you measure for backlash?
__________________
|
|
|
|
|
03-28-2007, 04:54 PM
|
#35
|
Join Date: Dec 2004
Location: Galloway, NJ
Posts: 3,964
|
Quote:
Originally Posted by WildBillyT
Whining is not associated with a particular ratio. It has to do with how well the gears are set up, and what the tooth angle is. Some gear installers just put everything in and that's that- regardless of how things like pinion depth and backlash get set. They half ass it and you get noisy gears. They will also make up ******** dismissive excuses if you press them about the noise. Good gear installers will install and tear down as many times as it takes until the measurements fall within the proper range.
|
Ah, ok, thats why i never put 3.42's or 3.73's ( at first I wanted 3.73's, then decided 3.42 would be more within my range) cause I thought after a certain ratio they would whine, good info, ill keep that in mind.
|
|
|
|
|
03-28-2007, 07:59 PM
|
#36
|
|
Ayatollah of Rock N Rolla / Admin
Join Date: Mar 2006
Location: Parts Unknown
Posts: 12,573
|
Quote:
Originally Posted by SupermanX24
How do you measure for backlash?
|
Rather than type it, here is a good explanation:
http://www.rps4wd.com/tech/RandP/backlash.htm
Last edited by WildBillyT; 03-28-2007 at 08:00 PM.
|
|
|
|
|
03-28-2007, 09:34 PM
|
#37
|
|
11 Second Club
Join Date: Nov 2005
Location: Hamilton Twp, NJ
Posts: 855
|
Quote:
Originally Posted by Savage_Messiah
I can't see how 4.10s WOULDN'T help autocross.
|
One way a set of 4.10's might become a factor is if you run out of rpm which could require a gear change to third gear. The gear change if it occurs at a bad point on the track could unsettle the car, maybe....Or by not shifting you would be on the limiter which is holding you back and potentially putting the valvetrain under undue stress.
Generally, no the 4.10's wouldn't hurt, but every course is different and there could arise a situation where the additional gear could cause a problem on a long blast if you don't have additional rpm range to go with it....
Chris
__________________
1999 Formula 6spd (The driver)
1997 2500 Ext. Cab Dodge 4x4 CTD 5spd (The Earth Mover)
1970 Nova 5spd (The toy)
|
|
|
|
Posting Rules
|
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts
HTML code is Off
|
|
|
|
|
|
