STD Tuning Drivetrain 2.88 or 3.06?

2.88 or 3.06?

2.88 or 3.06?

 
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Purplecomputer
Slowness 220D

897
05-24-2014, 12:26 PM #1
I have been wanting to upgrade my rear differential but I am not sure which one would be best for my setup since I can only really do this once.

I have to 616 Turbo and right now I have a 3.96 (dont know if the numbers are right)

going 70's is about as fast as I can go right now without having the whole car sound like its about to explode, plus It just dosnt ride well, if you guys know what I mean......Its hard to explain.

I know Ill need the tach as well.
Purplecomputer
05-24-2014, 12:26 PM #1

I have been wanting to upgrade my rear differential but I am not sure which one would be best for my setup since I can only really do this once.

I have to 616 Turbo and right now I have a 3.96 (dont know if the numbers are right)

going 70's is about as fast as I can go right now without having the whole car sound like its about to explode, plus It just dosnt ride well, if you guys know what I mean......Its hard to explain.

I know Ill need the tach as well.

swampmonkey
hx40 super

280
05-24-2014, 01:48 PM #2
i have a 3.07 on my non turbo 240d om616 with 72hp. works good... isnt that much of a difference between 2.88 and 3.06, go for whatever is cheapest/best.

3.06 probably has the large yoke/flange, while some 3.07 have the smaller one, the one from300sd w116/w126 and 300dt w123

is it an original 240d you should have 3.69 today, if its an 220d it should be 3.92.

---------------------------------
daily driver
w115 240d 72hp 3.07 rearend
w123 om602 turbo 200whp 7.5mm pump fivespeed 3.07 rearend
+ a few more.
mbturbo.com
swampmonkey
05-24-2014, 01:48 PM #2

i have a 3.07 on my non turbo 240d om616 with 72hp. works good... isnt that much of a difference between 2.88 and 3.06, go for whatever is cheapest/best.

3.06 probably has the large yoke/flange, while some 3.07 have the smaller one, the one from300sd w116/w126 and 300dt w123

is it an original 240d you should have 3.69 today, if its an 220d it should be 3.92.


---------------------------------
daily driver
w115 240d 72hp 3.07 rearend
w123 om602 turbo 200whp 7.5mm pump fivespeed 3.07 rearend
+ a few more.
mbturbo.com

Purplecomputer
Slowness 220D

897
05-24-2014, 03:43 PM #3
(05-24-2014, 01:48 PM)swampmonkey i have a 3.07 on my non turbo 240d om616 with 72hp. works good... isnt that much of a difference between 2.88 and 3.06, go for whatever is cheapest/best.

3.06 probably has the large yoke/flange, while some 3.07 have the smaller one, the one from300sd w116/w126 and 300dt w123

is it an original 240d you should have 3.69 today, if its an 220d it should be 3.92.

Its an original 240D. Sorry im a little dyslexic. Swap my numbers all the time.

I've seen plenty of 3.07's on eBay but been having a hard time with the 2.88
Purplecomputer
05-24-2014, 03:43 PM #3

(05-24-2014, 01:48 PM)swampmonkey i have a 3.07 on my non turbo 240d om616 with 72hp. works good... isnt that much of a difference between 2.88 and 3.06, go for whatever is cheapest/best.

3.06 probably has the large yoke/flange, while some 3.07 have the smaller one, the one from300sd w116/w126 and 300dt w123

is it an original 240d you should have 3.69 today, if its an 220d it should be 3.92.

Its an original 240D. Sorry im a little dyslexic. Swap my numbers all the time.

I've seen plenty of 3.07's on eBay but been having a hard time with the 2.88

swampmonkey
hx40 super

280
05-24-2014, 05:17 PM #4
(05-24-2014, 03:43 PM)Purplecomputer
(05-24-2014, 01:48 PM)swampmonkey i have a 3.07 on my non turbo 240d om616 with 72hp. works good... isnt that much of a difference between 2.88 and 3.06, go for whatever is cheapest/best.

3.06 probably has the large yoke/flange, while some 3.07 have the smaller one, the one from300sd w116/w126 and 300dt w123

is it an original 240d you should have 3.69 today, if its an 220d it should be 3.92.

Its an original 240D. Sorry im a little dyslexic. Swap my numbers all the time.

I've seen plenty of 3.07's on eBay but been having a hard time with the 2.88

no problem with the number-dyslexic, aslong as i can guess what you mean i wont mind, ill leave the angerissues to others Smile

if the 3.07 is easy to find id go for that, i gain about 100rpm doing 65mph on the car with the 2.88 vs the other with 3.07, althou that is with fivespeed gearboxes....


running the Gearspeed calculator app it gave me 62mph vs 58mph with the fourth gear (1:1) and 2.88 vs 3.07

so with a 2.88 your car will do 62mph when reving 2500rpm
and with a 3.07 your car will do 58mph when reving 2500rpm

the 2.88 is like only the last year of w123turbodiesel and the w126 from the same year, 1985 or perhaps 1984 also. but id bet my money on a 1985 turbodiesel... not exactly common,

But you can be happy you live in the US and not over here in Europe, we never got that 2.88 at al, i have imported mine throu a guy named Garret in Sacramento, he is the best!
This post was last modified: 05-24-2014, 05:18 PM by swampmonkey.

---------------------------------
daily driver
w115 240d 72hp 3.07 rearend
w123 om602 turbo 200whp 7.5mm pump fivespeed 3.07 rearend
+ a few more.
mbturbo.com
swampmonkey
05-24-2014, 05:17 PM #4

(05-24-2014, 03:43 PM)Purplecomputer
(05-24-2014, 01:48 PM)swampmonkey i have a 3.07 on my non turbo 240d om616 with 72hp. works good... isnt that much of a difference between 2.88 and 3.06, go for whatever is cheapest/best.

3.06 probably has the large yoke/flange, while some 3.07 have the smaller one, the one from300sd w116/w126 and 300dt w123

is it an original 240d you should have 3.69 today, if its an 220d it should be 3.92.

Its an original 240D. Sorry im a little dyslexic. Swap my numbers all the time.

I've seen plenty of 3.07's on eBay but been having a hard time with the 2.88

no problem with the number-dyslexic, aslong as i can guess what you mean i wont mind, ill leave the angerissues to others Smile

if the 3.07 is easy to find id go for that, i gain about 100rpm doing 65mph on the car with the 2.88 vs the other with 3.07, althou that is with fivespeed gearboxes....


running the Gearspeed calculator app it gave me 62mph vs 58mph with the fourth gear (1:1) and 2.88 vs 3.07

so with a 2.88 your car will do 62mph when reving 2500rpm
and with a 3.07 your car will do 58mph when reving 2500rpm

the 2.88 is like only the last year of w123turbodiesel and the w126 from the same year, 1985 or perhaps 1984 also. but id bet my money on a 1985 turbodiesel... not exactly common,

But you can be happy you live in the US and not over here in Europe, we never got that 2.88 at al, i have imported mine throu a guy named Garret in Sacramento, he is the best!


---------------------------------
daily driver
w115 240d 72hp 3.07 rearend
w123 om602 turbo 200whp 7.5mm pump fivespeed 3.07 rearend
+ a few more.
mbturbo.com

capflya
Dreaming of a VNT

309
05-27-2014, 11:49 PM #5
I think I have a 3.07 from an '84 300SD that should bolt up to your car. Shipping a diff isn't too bad, I've done it with a 2.88 before. If you're interested shoot me a PM.



'98 E300 Turbo "Juliette" - Brabus wheels and almost all the options a w210 could have
'87 300D Turbo "Roxanne" - #22 head - 400E brakes - EGR Delete - 17" Staggered AMG 5 spoke rims from CLK500 - 5 Spd manual
2007 Chevy 2500HD CCSB Duramax with about 400-500 rwhp depending on the tune I use Big Grin
1983 300D Silver Exterior/Black inside - Sold and will be missed, may we never meet in a PnP.
capflya
05-27-2014, 11:49 PM #5

I think I have a 3.07 from an '84 300SD that should bolt up to your car. Shipping a diff isn't too bad, I've done it with a 2.88 before. If you're interested shoot me a PM.




'98 E300 Turbo "Juliette" - Brabus wheels and almost all the options a w210 could have
'87 300D Turbo "Roxanne" - #22 head - 400E brakes - EGR Delete - 17" Staggered AMG 5 spoke rims from CLK500 - 5 Spd manual
2007 Chevy 2500HD CCSB Duramax with about 400-500 rwhp depending on the tune I use Big Grin
1983 300D Silver Exterior/Black inside - Sold and will be missed, may we never meet in a PnP.

winmutt
bitbanger

3,468
05-30-2014, 03:21 PM #6
I vote for 3.07. You wont have enough torque to get out of the hole on a 2.88. I had to struggle with my 617 2.88 getting out of the parking garage. (this is assuming you have 4spd manual)

1987 300D Sturmmachine
1991 300D Nearly Perfect
1985 300D Weekend/Camping/Dog car
1974 L508D Motoroam Monarch "NightMare"
OBK #42
winmutt
05-30-2014, 03:21 PM #6

I vote for 3.07. You wont have enough torque to get out of the hole on a 2.88. I had to struggle with my 617 2.88 getting out of the parking garage. (this is assuming you have 4spd manual)


1987 300D Sturmmachine
1991 300D Nearly Perfect
1985 300D Weekend/Camping/Dog car
1974 L508D Motoroam Monarch "NightMare"
OBK #42

Purplecomputer
Slowness 220D

897
05-30-2014, 05:43 PM #7
(05-30-2014, 03:21 PM)winmutt I vote for 3.07. You wont have enough torque to get out of the hole on a 2.88. I had to struggle with my 617 2.88 getting out of the parking garage. (this is assuming you have 4spd manual)

Good to know. I really dont have a clue about this stuff.

You couldnt go up hills is what you're saying?
Purplecomputer
05-30-2014, 05:43 PM #7

(05-30-2014, 03:21 PM)winmutt I vote for 3.07. You wont have enough torque to get out of the hole on a 2.88. I had to struggle with my 617 2.88 getting out of the parking garage. (this is assuming you have 4spd manual)

Good to know. I really dont have a clue about this stuff.

You couldnt go up hills is what you're saying?

swampmonkey
hx40 super

280
05-30-2014, 06:50 PM #8
you can go up hills without a problem, if doing about 55mph, i can do any hill that we have on the highway in sweden, without loosing any speed, on a non turbo om616...
althou, that depends on where you live, i often look for the fifth gear on my 240d, the same with the turboed om617 w115 fourspeed with 2.65, where the frack is my fifth gear. has about 90hp.

https://www.youtube.com/watch?v=ZHSqgpQUTdc
240d 3.07 fourspeed

the only difference is that you will have to drive with a gear lower compared to stock 3.69 if it is realy steep, like, someplaces i use 2nd instead of third, third only worked with high speed earlier and aggresive driving 3.69, and doesnt work at al now with 3.07, nothing that matters at al realy. not that hard to downshift.

the acctual difference in a 2.88 vs 3.07 is realy freaking smal, like, you are doing 2000rpm the car will do 21km/h instead of 19km/h... not realy that much..

have a w126sec with the 2.47 om605 fivespeed, and yes, you have to be a tad more careful with the clutch,

the first gear is painfully slow stock with the 3.69 differential, as long as it is flat or a little downhill you can start in second gear Tongue


the 3.07 is probably easier to find, and came in more years, but Greazzer is driving his heavy car with a 2.65LSD and a fivespeed paired to a om617NA.. and doesnt seem to troubled.
This post was last modified: 05-30-2014, 07:10 PM by swampmonkey.

---------------------------------
daily driver
w115 240d 72hp 3.07 rearend
w123 om602 turbo 200whp 7.5mm pump fivespeed 3.07 rearend
+ a few more.
mbturbo.com
swampmonkey
05-30-2014, 06:50 PM #8

you can go up hills without a problem, if doing about 55mph, i can do any hill that we have on the highway in sweden, without loosing any speed, on a non turbo om616...
althou, that depends on where you live, i often look for the fifth gear on my 240d, the same with the turboed om617 w115 fourspeed with 2.65, where the frack is my fifth gear. has about 90hp.

https://www.youtube.com/watch?v=ZHSqgpQUTdc
240d 3.07 fourspeed

the only difference is that you will have to drive with a gear lower compared to stock 3.69 if it is realy steep, like, someplaces i use 2nd instead of third, third only worked with high speed earlier and aggresive driving 3.69, and doesnt work at al now with 3.07, nothing that matters at al realy. not that hard to downshift.

the acctual difference in a 2.88 vs 3.07 is realy freaking smal, like, you are doing 2000rpm the car will do 21km/h instead of 19km/h... not realy that much..

have a w126sec with the 2.47 om605 fivespeed, and yes, you have to be a tad more careful with the clutch,

the first gear is painfully slow stock with the 3.69 differential, as long as it is flat or a little downhill you can start in second gear Tongue


the 3.07 is probably easier to find, and came in more years, but Greazzer is driving his heavy car with a 2.65LSD and a fivespeed paired to a om617NA.. and doesnt seem to troubled.


---------------------------------
daily driver
w115 240d 72hp 3.07 rearend
w123 om602 turbo 200whp 7.5mm pump fivespeed 3.07 rearend
+ a few more.
mbturbo.com

Purplecomputer
Slowness 220D

897
05-30-2014, 08:37 PM #9
(05-30-2014, 06:50 PM)swampmonkey you can go up hills without a problem, if doing about 55mph, i can do any hill that we have on the highway in sweden, without loosing any speed, on a non turbo om616...
althou, that depends on where you live, i often look for the fifth gear on my 240d, the same with the turboed om617 w115 fourspeed with 2.65, where the frack is my fifth gear. has about 90hp.

https://www.youtube.com/watch?v=ZHSqgpQUTdc
240d 3.07 fourspeed

the only difference is that you will have to drive with a gear lower compared to stock 3.69 if it is realy steep, like, someplaces i use 2nd instead of third, third only worked with high speed earlier and aggresive driving 3.69, and doesnt work at al now with 3.07, nothing that matters at al realy. not that hard to downshift.

the acctual difference in a 2.88 vs 3.07 is realy freaking smal, like, you are doing 2000rpm the car will do 21km/h instead of 19km/h... not realy that much..

have a w126sec with the 2.47 om605 fivespeed, and yes, you have to be a tad more careful with the clutch,

the first gear is painfully slow stock with the 3.69 differential, as long as it is flat or a little downhill you can start in second gear Tongue


the 3.07 is probably easier to find, and came in more years, but Greazzer is driving his heavy car with a 2.65LSD and a fivespeed paired to a om617NA.. and doesnt seem to troubled.

Sounds good. Ill save up for a 3.07 and new speedo. Quick question. Am i able to swap the mile counter thing-a-majig (whats that called?) into the new one. I wanna keep track of the miles.
Purplecomputer
05-30-2014, 08:37 PM #9

(05-30-2014, 06:50 PM)swampmonkey you can go up hills without a problem, if doing about 55mph, i can do any hill that we have on the highway in sweden, without loosing any speed, on a non turbo om616...
althou, that depends on where you live, i often look for the fifth gear on my 240d, the same with the turboed om617 w115 fourspeed with 2.65, where the frack is my fifth gear. has about 90hp.

https://www.youtube.com/watch?v=ZHSqgpQUTdc
240d 3.07 fourspeed

the only difference is that you will have to drive with a gear lower compared to stock 3.69 if it is realy steep, like, someplaces i use 2nd instead of third, third only worked with high speed earlier and aggresive driving 3.69, and doesnt work at al now with 3.07, nothing that matters at al realy. not that hard to downshift.

the acctual difference in a 2.88 vs 3.07 is realy freaking smal, like, you are doing 2000rpm the car will do 21km/h instead of 19km/h... not realy that much..

have a w126sec with the 2.47 om605 fivespeed, and yes, you have to be a tad more careful with the clutch,

the first gear is painfully slow stock with the 3.69 differential, as long as it is flat or a little downhill you can start in second gear Tongue


the 3.07 is probably easier to find, and came in more years, but Greazzer is driving his heavy car with a 2.65LSD and a fivespeed paired to a om617NA.. and doesnt seem to troubled.

Sounds good. Ill save up for a 3.07 and new speedo. Quick question. Am i able to swap the mile counter thing-a-majig (whats that called?) into the new one. I wanna keep track of the miles.

CRD4x4
CompoundSuperTurboDiesel4x4!

399
05-31-2014, 10:04 AM #10
Yo Purp!
My '81 300TD will be crushed soon and the 3.07 rear isn't spoken for. If you pull it you can have it super cheap. It has 195k on the "odometer".
The gauge cluster uses an electronic speedo which I don't want to seperate from the trans. They happen to be available too though, so...

'05 Jeep Liberty CRD - 160k
'06.5 VW Jetta TDI - 230k
'82 MB 300TD - 116k (motor going to raysorenson)
'81 MB 300TD - 195k (parting out)
'71 Jeep DJ5 - diesel conversion project
CRD4x4
05-31-2014, 10:04 AM #10

Yo Purp!
My '81 300TD will be crushed soon and the 3.07 rear isn't spoken for. If you pull it you can have it super cheap. It has 195k on the "odometer".
The gauge cluster uses an electronic speedo which I don't want to seperate from the trans. They happen to be available too though, so...


'05 Jeep Liberty CRD - 160k
'06.5 VW Jetta TDI - 230k
'82 MB 300TD - 116k (motor going to raysorenson)
'81 MB 300TD - 195k (parting out)
'71 Jeep DJ5 - diesel conversion project

Purplecomputer
Slowness 220D

897
05-31-2014, 12:59 PM #11
(05-31-2014, 10:04 AM)CRD4x4 Yo Purp!
My '81 300TD will be crushed soon and the 3.07 rear isn't spoken for. If you pull it you can have it super cheap. It has 195k on the "odometer".
The gauge cluster uses an electronic speedo which I don't want to seperate from the trans. They happen to be available too though, so...

sent you a pm
Purplecomputer
05-31-2014, 12:59 PM #11

(05-31-2014, 10:04 AM)CRD4x4 Yo Purp!
My '81 300TD will be crushed soon and the 3.07 rear isn't spoken for. If you pull it you can have it super cheap. It has 195k on the "odometer".
The gauge cluster uses an electronic speedo which I don't want to seperate from the trans. They happen to be available too though, so...

sent you a pm

bricktron
'77 240D

174
06-01-2014, 08:57 PM #12
i have 2.88 and a manual with 617 and it took getting the ALDA and boost sorted out before i could go up hills. after that it was easy and i appreciate the extra top end.


english red rat rod 1977 240D, OM617.952 burning B99.9, iron 4-speed & 2.88 diff, 195/60/R14 on alloys, 5mph bumpers, battery in the trunk, 25mm swaybar, 4x ECE H4 lamps, double brake lamps, deleted sunroof, export zoll & california blue plates




bricktron
06-01-2014, 08:57 PM #12

i have 2.88 and a manual with 617 and it took getting the ALDA and boost sorted out before i could go up hills. after that it was easy and i appreciate the extra top end.



english red rat rod 1977 240D, OM617.952 burning B99.9, iron 4-speed & 2.88 diff, 195/60/R14 on alloys, 5mph bumpers, battery in the trunk, 25mm swaybar, 4x ECE H4 lamps, double brake lamps, deleted sunroof, export zoll & california blue plates




MFSuper90
Budget Builder

1,533
06-03-2014, 02:38 PM #13
Speaking of 2.88, my buddy just bought a super clean '85 w126. That should be a 2.88, right?

'82 300D -3" straight pipe, ALDA deleted, 3in1 glowshift gauge, HX30, egr-less manifold, A/W intercooler Big Grin
'14 Ram 6.7l cummins -G56 handshaker, wishing it was deleted         
MFSuper90
06-03-2014, 02:38 PM #13

Speaking of 2.88, my buddy just bought a super clean '85 w126. That should be a 2.88, right?


'82 300D -3" straight pipe, ALDA deleted, 3in1 glowshift gauge, HX30, egr-less manifold, A/W intercooler Big Grin
'14 Ram 6.7l cummins -G56 handshaker, wishing it was deleted         

 
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