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Yes another injector question.
Hi all.
Happy New Year. Here goes. I just took all my injectors apart and soaked them in cleaner. Yes, I did one at a time. Now, I need to torque the injector nozzles on the bodies and I don't know what the torque spec is. Can you guys help? Louis. PS: What happens when the nozzle ends are cupped? |
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70-80 Nm
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The Golden Rule 1984 300SD (bought new, sold it in 1988, bought it back 13 yrs. later) |
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It may be a golden rule, but like Larry, I don't always use a torque wrench and I have never torqued an injector body back together, nor have I ever torqued an injector into a head!
Why? I've always been in too big of a hurry, and just took a guess on how tight it should be, based on how hard it was comming off! Sound dumb? May be, but I have been successful without a glitch on many items with exception to head bolts, rod and main bearings! Those I wouldn't think doing without a torque wrench! I'm not sure what you mean by "cupped nozzle ends" maybe someone here can answer that question as there is nothing on a 603, or 617 injector I'm familiar with that resemble anything cupped, unless yours have become deformed some how! BB Last edited by BusyBenz; 01-09-2005 at 09:54 PM. |
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Quote:
Since I've had them leak at 50-60 ftlb, I normally torque the bodies to 80ftlb and no leaks.
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1984 300D Turbo - 4-speed manual conversion, mid-level resto 1983 300D - parts car 1979 300TD Auto - Parts car. 1985 300D Auto - Wrecked/Parts. ========================= "If you don't know where you are going, any road will get you there". Lewis Carrol |
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[QUOTE=I'm not sure what you mean by "cupped nozzle ends" maybe someone here can answer that question as there is nothing on a 603, or 617 injector I'm familiar with that resemble anything cupped, unless yours have become deformed some how! BB[/QUOTE]
First of all I have to thank you guys for the responses. I had some problems trying to log in after moving and changing internet providers. And forgetting my password didn't help!! BB: As to "cupping"- from what I understand is that the area where the needle is located the nozzle has a small depression in it. Looks like someone took their tumb and put a small dent in the nozzle. Louis. |
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[QUOTE=mb123mercedes]
Quote:
That is "etching" from wear, it's usually in a circle the size of the hole in the heat shield. A new nozzle face is surface ground flat, there is no "cupping".
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1984 300D Turbo - 4-speed manual conversion, mid-level resto 1983 300D - parts car 1979 300TD Auto - Parts car. 1985 300D Auto - Wrecked/Parts. ========================= "If you don't know where you are going, any road will get you there". Lewis Carrol |
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Thanks Tom.
Well, one learns something new everyday. Someone once told me it was called cupping but I know you have lotsa experience with this stuff so, you know what your talking about. But I still have no clear answer to my question. What is the effect to the daily operation of the engine? Also, if I have to change the nozzles, can I use some good used ones from a set of refurbished ones? They are from a non turbo 617 but someone rebuild and converterd them and put them in my 84 300td. The had little rubber bands around the injector body. Louis. |
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