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#1
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An Underestimated Performance Element...
courtesy of Winmutt @ super turbo diesel .com I replaced the seals on this item yesterday and the improvements are quite noticeable. The relation of Bowden cable to power output is primarily responsible and continuous power / response from throttle are markedly increased. ... just a heads up / reminder. Last edited by jt20; 11-23-2009 at 10:07 AM. Reason: clarity |
#2
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Very nice. What is it and what kind of car does it go on?
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"Buster" in the '95 Our all-Diesel family 1996 E300D (W210) . .338,000 miles Wife's car 2005 E320 CDI . . 113,000 miles My car Santa Rosa population 176,762 (2022) Total. . . . . . . . . . . . 627,762 "Oh lord won't you buy me a Mercedes Benz." -- Janis Joplin, October 1, 1970 |
#3
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Is it at the trans?
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1981 300SD 512k OM603 |
#4
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Quite a cryptic post- what is it, where is it located, what engine models, part number? Is it a DIY? Can you describe the job description? Best place to find/buy new seals? Most folks will need this info in order to get this job completed.
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#5
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I believe that is the connection flange piece between the turbo and intake on a 617. Replacing the seals would prevent air pressure leaks.
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-diesel is not just a fuel, its a way of life- '15 GLK250 Bluetec 118k - mine - (OC-123,800) '17 Metris(VITO!) - 37k - wifes (OC-41k) '09 Sprinter 3500 Winnebago View - 62k (OC - 67k) '13 ML350 Bluetec - 95k - dad's (OC-98k) '01 SL500 - 103k(km) - dad's (OC-110,000km) '16 E400 4matic Sedan - 148k - Brothers (OC-155k) |
#6
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Quote:
Sorry about that. It is the the turbo to intake coupling for the 61x turbo engines. Almost identical to the turbo 60x engines as well. There are a few ways to DIY: ---easiest and least invasive is to remove the compressor housing without destroying the inlet blades. ---most annoying is to remove the whole turbo as a unit... ugh. 2 large O-rings are replaced, and boost leaks are resolved (for that area) |
#7
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I look forward to hearing your explanation of how the turbo coupling seals relate to the Bowden cable.
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#8
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your sincere curiosity is appreciated.
Turbodiesels from '85 and up may be much more sensitive to related changes in shifting characteristics because of the Vacuum Amplifier (blue saucer). --------------- Rough outline--------- If you have a great enough boost leak, you are not making 'the expected power' at the flywheel with regards to your throttle position. Similar to ALDA over/under adjustments If you, like many, adjust your Bowden cable in relation to throttle position, you have have not made an accurate adjustment unless you have accounted for your under / over performance. A boost leak is not a linear phenomenon; the Bowden cable is. As boost builds, more air finds its way out. The Vac Amp mixes the signal of boost pressure and vacuum and relays it to the trans. The Bowden cable is moved further as throttle is demanded, but boost does not respond at the expected rate assumed by the trans and vacuum signals. |
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If you have to ask what it is, you haven`t experienced the joy of pulling the manifolds off a 617 Turbo engine.
It`s near impossible to remove the Turbo w/o removing the manifolds. from my experience. then you would need a new manifold gasket, turbo oil gasket etc... after the manifolds are loosened and pulled back, the coupler slips out with a little twisting and pulling. John, your TD is a Cali model as I remember, maybe the turbo can be removed easier with the manifold sitting up higher. I just removed a set of manifolds off a 78 300SD 2 days ago, it`s one of those PITA jobs Charlie
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there were three HP ratings on the OM616... 1) Not much power 2) Even less power 3) Not nearly enough power!! 240D w/auto Anyone that thinks a 240D is slow drives too fast. 80 240D Naturally Exasperated, 4-Spd 388k DD 150mph spedo 3:58 Diff We are advised to NOT judge ALL Muslims by the actions of a few lunatics, but we are encouraged to judge ALL gun owners by the actions of a few lunatics. Funny how that works |
#10
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As Charlie surmised, it's easy to remove the turbo from the '85 California version of the OM617 engine. I had mine off when I replaced the trap cat with a test pipe and didn't have to touch the manifolds. The Federal version is another question; removal of the manifolds and turbo as a unit is the recommended method, or so I have read here.
Jeremy
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"Buster" in the '95 Our all-Diesel family 1996 E300D (W210) . .338,000 miles Wife's car 2005 E320 CDI . . 113,000 miles My car Santa Rosa population 176,762 (2022) Total. . . . . . . . . . . . 627,762 "Oh lord won't you buy me a Mercedes Benz." -- Janis Joplin, October 1, 1970 |
#11
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Quote:
Why? |
#12
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Parts identification assists everyone from the beginner to the expert- I asked so that others could understand clearly, not for myself. I have a underhood IC with a modified intake manifold.
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