240dt - Page 11 - PeachParts Mercedes-Benz Forum

panZZer · #**151** 04-20-2009, 05:33 PM

anything new happening on tranz adapters??

Graminal95 · #**152** 04-20-2009, 07:12 PM

Right now I'm trying to track down my engine vibration issue. I believe that the vibration that I am feeling with the 5 speed from the engine but is magnified because the transmission mount is so much further away from the front mounts.

Is anyone running a manual with a 617 but without engine shocks?

The book says that the engine shock are not to be used with a manual transmission, and instead to use a 3rd mount on the cross member. I think some of my vibration is coming from that mount, even though its relatively new. If I can eliminate it without adverse effects I will.

If I can get the engine vibration issue sorted this week, I'll put the 5 speed back in this weekend and see if its a go or no go.

Gurkha · #**153** 09-17-2009, 01:17 AM

Quote:

Originally Posted by kerry

It's my understanding that the 616 IP's installed on MB vans (207d, 307d, 407d) put out more fuel than the IP's on the cars. Might work if you can find one.

Actually that mod can be done by any IP service shop, I had it done to my older N/A OM616. Its just a matter of more fuel delivery at a given RPM. You also have to adjust the governor for a 1000 rpm more.

Gurkha · #**154** 09-17-2009, 01:20 AM

The ZF built MB 5 speed are second to none. They are purpose built to handle 160 diesel bhps and do severe overloaded commercial duty as well, day in day out. If proper lube is maintained, they last for more than 400,000 miles without any issues. They are used in many commercial apps like 307d as well as 407d trucks and Tempo Travelers.

Gurkha · #**155** 09-17-2009, 02:15 AM

Quote:

Originally Posted by 82-300TD

Anyone really. The full load and torque capsule can be turned up, or the full load limiter can be removed entirely.

Its an adjustment for the fuel delivery rod and the rear speed governor unit gets replaced with a another one.

OM616 · #**156** 01-02-2011, 02:54 PM

I am getting ready to get into my 240 and was wondering if you have had solved the vibration issue with the 5 speed.

Graminal95 · #**157** 01-02-2011, 11:05 PM

Its funny that you mention the vibration issue, as I have added a rack damper from a 300dt to the IP and turned up the coarse idle screw a bit and the vibration seems to be diminished, but not gone. I need to adjust the IP some more as the engine "hunts" at idle. I hope to be putting the 5 speed back in soon, and will be trying an auto tranny mount instead of the manual mount to see if it helps isolate the tranny from the body.

OM616 · #**158** 01-02-2011, 11:36 PM

Quote:

Originally Posted by Graminal95

Its funny that you mention the vibration issue, as I have added a rack damper from a 300dt to the IP and turned up the coarse idle screw a bit and the vibration seems to be diminished, but not gone. I need to adjust the IP some more as the engine "hunts" at idle. I hope to be putting the 5 speed back in soon, and will be trying an auto tranny mount instead of the manual mount to see if it helps isolate the tranny from the body.

Try backing out the rack damper and see if the hunting stops. It is normal for it to hunt a little when it is cold and warming up, (30 degrees F weather), but once warmed up it should hold a constant idle speed.

With the engine running, warmed up, and hunting, back out the damper and see what happens, (hunting reduces, engine starts shaking etc.). If the hunting stops, slowly turn it back in. You will feel it touch, then give it 1/8 to 1/4 turns at a time waiting 30sec in between to let things settle out after the adjustment. Keep going until the engine stops shaking, or it starts hunting.

If it starts hunting before it stops shaking, you will need to back off the Course Idle adjustment, ( Idle Governor Spring Tension), a touch, (try a 1/8 turn), and repeat the damper adjustment. The Rack Damper is putting additional force on the rack, which has the effect of increasing the Idle Governor Spring Tension.

In regards to the vibration, what condition is the anti vibration mount that is located under the engine, between the engine and bell housing? I was thinking of adding one to my 300D 4-speed before I sold it. Not sure if the extra connection would dampen it enough or not.

Graminal95 · #**159** 01-04-2011, 04:34 PM

I just swapped out the rack damper bolt for the newer gold one (found at the yard) upped the external idle screw a bit and bam, smoothish idle, no hunting, no dip in RPM with AC/400w Headlights/heater on high, and I can't feel the vibrations that was causing issues with the 5-speed. The idle is a little higher then before my guess is 800-850ish, which I'm ok with. I think its time to slap the 5-speed back in!!

I'm not sure what you mean about the mount between the engine and bell housing. But if its the funny limiter that MB used on the 240's behind the lower oil pan, then its gone. I took it off ages ago to see if it would make a difference with the vibration, but it did not.

panZZer · #**160** 01-04-2011, 04:59 PM

I really dig your cosworth intercooler--The ideal mod would be mounting a 240d oilcooler down front horizontal --or even an aftermarket one like earl's and then moving the benz radiator to the DS 4" and the cosworth intercooler- where you put it--But the benz radiator mounting system botches that plan----maybe a metal top tank/ pressure cap??--and moving the bottom mounting bungs to the ds 4".

ForcedInduction · #**161** 01-04-2011, 09:52 PM

Quote:

Originally Posted by Graminal95

I'm not sure what you mean about the mount between the engine and bell housing.

Probably the adapter plate that bolts to the engine block.

OM616 · #**162** 01-05-2011, 02:01 AM

Quote:

Originally Posted by Graminal95

I'm not sure what you mean about the mount between the engine and bell housing. But if its the funny limiter that MB used on the 240's behind the lower oil pan, then its gone. I took it off ages ago to see if it would make a difference with the vibration, but it did not.

yep thats it.

Hip001 · #**163** 05-31-2012, 10:13 PM

Quote:

Originally Posted by OM616

Thanks, I could not find a time speck in my owners manual. I remember seeing a post somewhere that showed a page from a MB book and it listed all the W123 cars times.

I seem to remember it reading :

240D Auto @ 32 sec
240D Man @ 31 sec
300D @ 18 sec
300TD @ 14 sec

I would think that going from 67 to close to 100Hp would account for more than 4 sec or am I overestimating the powers affect to actual performance? I would hope that it would be able to equal or beat a 300D @ 87Hp.

I can not find that thread where I saw the 0-60 times. dose anyone have any idea of what I saw or have I lost my mind?

Thank you for humoring me. I am looking forward to your times.....

Interesting, I timed my 1982 240d 4-speed 0-60 24sec. I will recheck my times tomorrow. For some reason I thought my car had 71hp??