Vacuum line replacement
11-04-2006, 04:54 PM
#16
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Well i finally got back with the spec's on the silicon hose for those of you that are intrested in something that will last rather than justt look good. Yes I know that this type of hose dosn't look good- about the same color of red rtv- but hold up extreamly well under high heat conditions. This is not the same type used on R.C. cars and planes> That type is inteded to be used under preasure, not vac and could colapse. This is intended for vac use only- I was wrong, it comes in 6' lengths not 18". Here is a list of Gates part#s and sizes.
27075 7/64
27076 5/32
27077 7/73
27078 1/4
Price runs between 6.50 to 12.00 depending on size. Hope this helps someone.
27075 7/64
27076 5/32
27077 7/73
27078 1/4
Price runs between 6.50 to 12.00 depending on size. Hope this helps someone.
11-04-2006, 11:21 PM
#17
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Does anybody care to write about the importance of the inside diameter of a hose to its function? If it doesn't matter much, it'd be easier to use the same id everywhere.
That's a fairly small range of ID's up there, at least until you remember the way pi and r squared affect the volume that's being operated on, especially over distance.
That's a fairly small range of ID's up there, at least until you remember the way pi and r squared affect the volume that's being operated on, especially over distance.
11-05-2006, 09:46 AM
#18
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Originally Posted by Fogey1
Does anybody care to write about the importance of the inside diameter of a hose to its function? If it doesn't matter much, it'd be easier to use the same id everywhere.
That's a fairly small range of ID's up there, at least until you remember the way pi and r squared affect the volume that's being operated on, especially over distance.
That's a fairly small range of ID's up there, at least until you remember the way pi and r squared affect the volume that's being operated on, especially over distance.
For vacuum service in our cars, the most important diameter to remember is the size that goes snugly on to the fitting. Vacuum actuators, including distributor advance, have small volumes of air moving them. It's not continuous flow, so flow as a function of diameter is not so important. Theory is that larger hoses/larger volumes might be slower to respond, and that may just cancel out any benefits one might anticipate from using larger hoses anyway.
My two cents...
11-05-2006, 10:43 AM
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Replacement of vac lines
I just did this two weeks ago.
On some of the connections I used a spark plug puller and twisted the lines very slowly. Take gentle care while doing this. If this did not work. I used a knife to split the hose. I did break a $50 Thermo Valve. I pulled the vac hose.
The passenger side under the intake tubes was a challange. I stood in front of the car and I was able to get my arm into that tiny space.
It was worth all the effort to get the vac lines replaced.
On some of the connections I used a spark plug puller and twisted the lines very slowly. Take gentle care while doing this. If this did not work. I used a knife to split the hose. I did break a $50 Thermo Valve. I pulled the vac hose.
The passenger side under the intake tubes was a challange. I stood in front of the car and I was able to get my arm into that tiny space.
It was worth all the effort to get the vac lines replaced.
11-06-2006, 01:03 PM
#21
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Originally Posted by Hacker-Pschorr
I think 2V4V is pointing towards the type of line I use - looks like a fabric braid. What the MBZ dealer stocks is most likely made by WURTH anyway.
81 Shark - I'm not sure what you man by vacuum connectors. If you mean the plastic T's, yes I replaced them all - again WURTH products (my mechanic stocks a boat load of WURTH products, easy access). The lines I use connect directly to every vacuum port.
81 Shark - I'm not sure what you man by vacuum connectors. If you mean the plastic T's, yes I replaced them all - again WURTH products (my mechanic stocks a boat load of WURTH products, easy access). The lines I use connect directly to every vacuum port.
I do not know about the lines from MB, but I can tell you that all three of the Atlanta MB dealers have huge amounts of Wurth "For Stock" hoses and other products.
We stock it here at our shop to use on the cars we repair.
There hose clamps (Zebra clamps) are also very good.
