Trans Upgrades for an 85 300d?
Trans Upgrades for an 85 300d?
05-24-2013, 11:57 AM
#2
W123 Mods: 4 speed ** manual climate control ** '85 Kalitucky intake ** manual windows & full tint ** Euro headlights retrofit w/bixenon projectors ** 4 brake light mod ** Vogtland 50mm drop front & Lesjofors S600 drop rear springs ** 16" rims ** late w126 brake spindles, rotors & calipers ** full suspension rehab ** Bilstein HDs ** AL129X alternator & 1/0 starter and charging cables ** 300GD clutch/flywheel ** AFCO 80103N radiator & Earl's 41610 oil cooler ** custom block-off plate, remote oil filter & t-stat ** MW IP w/ tomnik's 6.5mm 'Holly' elements **
S124 Mods: 400E Rear subframe ** SL600 Brakes ** Late 300E 210mm diff ** SLK230 6 speed ** 17" CLK rims ** Vented RF Fender ** Facelift Hood, Headlights, and Lower Cladding **
OBK# 62
SurfRodder
05-24-2013, 11:57 AM #2lots of upgrades... the same basic trans is used in higher HP cars... but you are unlikely to need anything special for a stock OM617 and even a fairly upgraded 617 likley wouldn't overpower a fresh rebuilt trans done by a competent shop...but while theyre in there... I understand the urge to overdo it!
W123 Mods: 4 speed ** manual climate control ** '85 Kalitucky intake ** manual windows & full tint ** Euro headlights retrofit w/bixenon projectors ** 4 brake light mod ** Vogtland 50mm drop front & Lesjofors S600 drop rear springs ** 16" rims ** late w126 brake spindles, rotors & calipers ** full suspension rehab ** Bilstein HDs ** AL129X alternator & 1/0 starter and charging cables ** 300GD clutch/flywheel ** AFCO 80103N radiator & Earl's 41610 oil cooler ** custom block-off plate, remote oil filter & t-stat ** MW IP w/ tomnik's 6.5mm 'Holly' elements **
S124 Mods: 400E Rear subframe ** SL600 Brakes ** Late 300E 210mm diff ** SLK230 6 speed ** 17" CLK rims ** Vented RF Fender ** Facelift Hood, Headlights, and Lower Cladding **
OBK# 62
05-24-2013, 12:37 PM
#3
Thanks for the reply. I am thinking of trying to squeeze some power out of the 617 - just not sure how crazy I want to get yet. The past two diesel trucks I have owned have been 609hp, and 670hp, at the wheels. Where is a good source for the good trans parts?
05-24-2013, 01:03 PM
#4
For manuals, there is the 240D 4spd, the impossible euro 5spd, or swap in a BMW getrag, toyota supra, gm whatever, etc. box with an adapter plate.
Newbie-read this: Cheap Tricks
617.952-220k-Getting built up
larsalan I guess I need to look at this stupid ass drip shit. What you have to like mess with those elements on the pump? What a fucking hassle. then use some wire to hold the throttle open or some shit?
Simpler=Better
05-24-2013, 01:03 PM #4You can get a shift kit, there is info over on PP.
For manuals, there is the 240D 4spd, the impossible euro 5spd, or swap in a BMW getrag, toyota supra, gm whatever, etc. box with an adapter plate.
Newbie-read this: Cheap Tricks
617.952-220k-Getting built up
larsalan I guess I need to look at this stupid ass drip shit. What you have to like mess with those elements on the pump? What a fucking hassle. then use some wire to hold the throttle open or some shit?
05-24-2013, 01:10 PM
#5
raysorenson
05-24-2013, 01:10 PM #5The '85 already has a higher stall T.C. than the other w123's. I think the shift kit is called "superior". There are adapter plates out there for the 617 that open up a lot of other options.
05-24-2013, 04:37 PM
#7
Or take your chances. But, we've all seen them rubber discs blow out and a driveshaft whipping up into the chassis.
cue the flex disc upgrade linkz...
Rusted out beat down 300d turbo 82' -- RIP
Nice body, tons of ridiculous mechanical issues - 300d turbo 82' /motor 85'
Nice body, tons of ridiculous mechanical issues - 300d turbo 82' /motor 85'
I think at that point you'll also be talking about converting the driveshaft's flex disks to some beefier metal part or change to a u-joint setup.
Or take your chances. But, we've all seen them rubber discs blow out and a driveshaft whipping up into the chassis.
cue the flex disc upgrade linkz...
Rusted out beat down 300d turbo 82' -- RIP
Nice body, tons of ridiculous mechanical issues - 300d turbo 82' /motor 85'
Nice body, tons of ridiculous mechanical issues - 300d turbo 82' /motor 85'
05-29-2013, 12:53 AM
#9
(05-28-2013, 07:39 PM)85-300D What exact model of trans is this anyway?
pretty sure its a 722.3 someone else will either corroborate or correct that...
W123 Mods: 4 speed ** manual climate control ** '85 Kalitucky intake ** manual windows & full tint ** Euro headlights retrofit w/bixenon projectors ** 4 brake light mod ** Vogtland 50mm drop front & Lesjofors S600 drop rear springs ** 16" rims ** late w126 brake spindles, rotors & calipers ** full suspension rehab ** Bilstein HDs ** AL129X alternator & 1/0 starter and charging cables ** 300GD clutch/flywheel ** AFCO 80103N radiator & Earl's 41610 oil cooler ** custom block-off plate, remote oil filter & t-stat ** MW IP w/ tomnik's 6.5mm 'Holly' elements **
S124 Mods: 400E Rear subframe ** SL600 Brakes ** Late 300E 210mm diff ** SLK230 6 speed ** 17" CLK rims ** Vented RF Fender ** Facelift Hood, Headlights, and Lower Cladding **
OBK# 62
SurfRodder
05-29-2013, 12:53 AM #9(05-28-2013, 07:39 PM)85-300D What exact model of trans is this anyway?
pretty sure its a 722.3 someone else will either corroborate or correct that...
W123 Mods: 4 speed ** manual climate control ** '85 Kalitucky intake ** manual windows & full tint ** Euro headlights retrofit w/bixenon projectors ** 4 brake light mod ** Vogtland 50mm drop front & Lesjofors S600 drop rear springs ** 16" rims ** late w126 brake spindles, rotors & calipers ** full suspension rehab ** Bilstein HDs ** AL129X alternator & 1/0 starter and charging cables ** 300GD clutch/flywheel ** AFCO 80103N radiator & Earl's 41610 oil cooler ** custom block-off plate, remote oil filter & t-stat ** MW IP w/ tomnik's 6.5mm 'Holly' elements **
S124 Mods: 400E Rear subframe ** SL600 Brakes ** Late 300E 210mm diff ** SLK230 6 speed ** 17" CLK rims ** Vented RF Fender ** Facelift Hood, Headlights, and Lower Cladding **
OBK# 62
05-29-2013, 10:35 AM
#10
raysorenson
05-29-2013, 10:35 AM #10I think the Californica '85 cars had different transmissions than the '85 federal cars.
05-29-2013, 11:50 AM
#11
Gota love Mercedes Diesels!
.
DeliveryValve
05-29-2013, 11:50 AM #11'85 Cali has the 722.416 trans. '85 Feds got the 722.303 for the 300sd and 722.315 for the 300d.
Gota love Mercedes Diesels!
.
05-31-2013, 01:26 PM
#15
raysorenson
05-31-2013, 01:26 PM #15I take "firm" shifts to mean more pressure applying the friction bands/clutches, which means more torque capacity, so this will be a performance upgrade. I recommend against doing anything to soften 2nd gear on an '85 trans. MB already fixed the harsh 1-2 shift issues on the '85. If anything, you'll want to firm it up.
06-04-2013, 04:28 PM
#16
W123 Mods: 4 speed ** manual climate control ** '85 Kalitucky intake ** manual windows & full tint ** Euro headlights retrofit w/bixenon projectors ** 4 brake light mod ** Vogtland 50mm drop front & Lesjofors S600 drop rear springs ** 16" rims ** late w126 brake spindles, rotors & calipers ** full suspension rehab ** Bilstein HDs ** AL129X alternator & 1/0 starter and charging cables ** 300GD clutch/flywheel ** AFCO 80103N radiator & Earl's 41610 oil cooler ** custom block-off plate, remote oil filter & t-stat ** MW IP w/ tomnik's 6.5mm 'Holly' elements **
S124 Mods: 400E Rear subframe ** SL600 Brakes ** Late 300E 210mm diff ** SLK230 6 speed ** 17" CLK rims ** Vented RF Fender ** Facelift Hood, Headlights, and Lower Cladding **
OBK# 62
SurfRodder
06-04-2013, 04:28 PM #16generally the firmer the shift, the better it is on the trans as well...
W123 Mods: 4 speed ** manual climate control ** '85 Kalitucky intake ** manual windows & full tint ** Euro headlights retrofit w/bixenon projectors ** 4 brake light mod ** Vogtland 50mm drop front & Lesjofors S600 drop rear springs ** 16" rims ** late w126 brake spindles, rotors & calipers ** full suspension rehab ** Bilstein HDs ** AL129X alternator & 1/0 starter and charging cables ** 300GD clutch/flywheel ** AFCO 80103N radiator & Earl's 41610 oil cooler ** custom block-off plate, remote oil filter & t-stat ** MW IP w/ tomnik's 6.5mm 'Holly' elements **
S124 Mods: 400E Rear subframe ** SL600 Brakes ** Late 300E 210mm diff ** SLK230 6 speed ** 17" CLK rims ** Vented RF Fender ** Facelift Hood, Headlights, and Lower Cladding **
OBK# 62
06-05-2013, 10:32 AM
#17
FWIW I always ran my transmission with 0" vacuum (various reasons). I always just let off as it started to shift. If I kept flooring it i would get the classic bangshift
This post was last modified: 06-05-2013, 10:39 AM by Simpler=Better.
Newbie-read this: Cheap Tricks
617.952-220k-Getting built up
larsalan I guess I need to look at this stupid ass drip shit. What you have to like mess with those elements on the pump? What a fucking hassle. then use some wire to hold the throttle open or some shit?
Simpler=Better
06-05-2013, 10:32 AM #17From what I've read, increase the modulator pressure if you're getting slippage. This is done from outside the transmission with a gauge pretty easily. I don't know what long term impacts this will have, but it should fix slippage.
FWIW I always ran my transmission with 0" vacuum (various reasons). I always just let off as it started to shift. If I kept flooring it i would get the classic bangshift
Newbie-read this: Cheap Tricks
617.952-220k-Getting built up
larsalan I guess I need to look at this stupid ass drip shit. What you have to like mess with those elements on the pump? What a fucking hassle. then use some wire to hold the throttle open or some shit?
06-05-2013, 10:39 AM
#18
Excessive heat = trans damage
W123 Mods: 4 speed ** manual climate control ** '85 Kalitucky intake ** manual windows & full tint ** Euro headlights retrofit w/bixenon projectors ** 4 brake light mod ** Vogtland 50mm drop front & Lesjofors S600 drop rear springs ** 16" rims ** late w126 brake spindles, rotors & calipers ** full suspension rehab ** Bilstein HDs ** AL129X alternator & 1/0 starter and charging cables ** 300GD clutch/flywheel ** AFCO 80103N radiator & Earl's 41610 oil cooler ** custom block-off plate, remote oil filter & t-stat ** MW IP w/ tomnik's 6.5mm 'Holly' elements **
S124 Mods: 400E Rear subframe ** SL600 Brakes ** Late 300E 210mm diff ** SLK230 6 speed ** 17" CLK rims ** Vented RF Fender ** Facelift Hood, Headlights, and Lower Cladding **
OBK# 62
SurfRodder
06-05-2013, 10:39 AM #18Slip = heat and sloppy shifts
Excessive heat = trans damage
W123 Mods: 4 speed ** manual climate control ** '85 Kalitucky intake ** manual windows & full tint ** Euro headlights retrofit w/bixenon projectors ** 4 brake light mod ** Vogtland 50mm drop front & Lesjofors S600 drop rear springs ** 16" rims ** late w126 brake spindles, rotors & calipers ** full suspension rehab ** Bilstein HDs ** AL129X alternator & 1/0 starter and charging cables ** 300GD clutch/flywheel ** AFCO 80103N radiator & Earl's 41610 oil cooler ** custom block-off plate, remote oil filter & t-stat ** MW IP w/ tomnik's 6.5mm 'Holly' elements **
S124 Mods: 400E Rear subframe ** SL600 Brakes ** Late 300E 210mm diff ** SLK230 6 speed ** 17" CLK rims ** Vented RF Fender ** Facelift Hood, Headlights, and Lower Cladding **
OBK# 62
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