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Wildthings Samba Member
Joined: March 13, 2005 Posts: 50351
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Posted: Mon Aug 24, 2015 12:53 am Post subject: Type 4 Dipstick Tube Modification |
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I have had continual seepage for the boot on my Type 4 dipstick tube for a while and decided to do something about it. I drilled the original funnel shaped pipe out of the oil filler pipe and installed in its place a piece of steel pipe. I also had to JB Weld a thin piece of tubing over the original tube coming down out of the shroud to get the diameters to match. The pieces don't line up 100% perfect but the dipstick slides in smoothly.
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Clatter Samba Member
Joined: September 24, 2003 Posts: 7544 Location: Santa Cruz
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Posted: Mon Aug 24, 2015 11:58 am Post subject: |
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Yay!!
Not only do those drip oil, but they also seem like a great place to suck air, too.. _________________ Bus Motor Build
What’s That Noise?!? |
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aeromech Samba Member
Joined: January 24, 2006 Posts: 16971 Location: San Diego, California
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Posted: Mon Aug 24, 2015 12:21 pm Post subject: |
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So was it a problem with the rubber boots you tried? I understand that some are better quality than others (Viton?). Did they last a short while and then leak, or right away? I usually install tie wraps on each end.
Looks like a good fix there WT _________________ Lead Mechanic: San Diego Air and Space Museum
Licensed Airframe and Powerplant Mechanic
Licensed Pilot (Single engine Land)
Boeing 727,737-200-300-400,757,767
Airbus A319,320,321
DC9/MD80
BAe146
Fokker F28/F100
VW type 1 1962,63,65,69,72
VW Type 2 1971 (3 ea.) 1978, 1969
VW Jetta
VW Passat
Capable of leaping tall buildings in a single bound |
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Wildthings Samba Member
Joined: March 13, 2005 Posts: 50351
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Posted: Mon Aug 24, 2015 12:29 pm Post subject: |
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The last one I had was supposed to be a viton one and seemed to fit well enough but did leak. I added clamps around the ends which slowed down the leak but didn't stop it. |
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aeromech Samba Member
Joined: January 24, 2006 Posts: 16971 Location: San Diego, California
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Posted: Mon Aug 24, 2015 1:04 pm Post subject: |
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Nice job. Looking at the way VW designed this it just seems to me that they could have used one tube with a thread end that would slide all the way through the shroud and screw into the oil filler tube. _________________ Lead Mechanic: San Diego Air and Space Museum
Licensed Airframe and Powerplant Mechanic
Licensed Pilot (Single engine Land)
Boeing 727,737-200-300-400,757,767
Airbus A319,320,321
DC9/MD80
BAe146
Fokker F28/F100
VW type 1 1962,63,65,69,72
VW Type 2 1971 (3 ea.) 1978, 1969
VW Jetta
VW Passat
Capable of leaping tall buildings in a single bound |
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levi20AE Samba Member
Joined: June 24, 2005 Posts: 485 Location: Las Vegas, NV
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Posted: Mon Aug 24, 2015 2:19 pm Post subject: |
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Great solution! I just got my motor back and the builder managed to poke a hole in that tube resulting a pretty serious leak. So 3/8" fuel rated hose will work as well... Seems like a better solution than the thin rubber anyways. _________________ 1973 Campmobile http://www.thesamba.com/vw/forum/viewtopic.php?t=524511&postdays=0&postorder=asc&start=0
20th AE VW GTI - 369hp 340tq @ 26 PSI
1982 Rabbit Pickup - German AAZ 1.9TD - daily with lots of MPGs |
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kaiisons Samba Member
Joined: January 07, 2012 Posts: 77 Location: Sydney, Australia
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Posted: Mon Aug 24, 2015 4:11 pm Post subject: |
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i've had a viton one from air head parts on mine for over 4 years without a single drop.
you should have just got one of these. |
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Lil Lulu Samba Member
Joined: December 08, 2007 Posts: 1745 Location: Mouth of the Columbia
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Posted: Fri Aug 11, 2017 5:05 pm Post subject: Re: Type 4 Dipstick Tube Modification |
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Just want to confirm that this mod is the nazzz. I'm not equipped to braze so had to weld. Just a little extra pain but doable. You have to place your clamps just right to be able to tighten them. Only the one that's on the case side is accessible to tighten with the HX on but you have to aim the screw just right.
Don't think I'd trust quicksqueeze clamps. Very pleased that I exchanged the shroud studs for bolts.
Went through 3 boots. Trouble is; the boots always crack on the top, where you can't see it.
Thank you wildthings. _________________ '65 Beetle "Lil' Lulu"- Ruby Red
1600 stock from '71 bus
'72 Deluxe - Niagara Blue w/pastelwiess Camper Special 2L dual 40 Webers 002
'74 Hightop Weekender "Dixie" 1800 34 Del singles |
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airschooled Air-Schooled
Joined: April 04, 2012 Posts: 12727 Location: on a bike ride somewhere
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Posted: Sat Aug 12, 2017 3:18 am Post subject: |
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kaiisons wrote: |
i've had a viton one from air head parts on mine for over 4 years without a single drop.
you should have just got one of these. |
Rubber fails people in different ways, depending on the life of the part. If Airhead found an extra box in the back room, they would likely sell them. Then if the end user parks their bus in an area with more ozone gas, like near power transformers/lines, the rubber will degrade right in front of your eyes. Add daily driving heat cycles in all temperatures, and splash from a rainy climate, and you will get literally decades of difference out of the same rubber part that someone else needs to replace once a year.
I used to work in an industrial plastic industry where we would see a screwup in coloring dyes take one piece and make it completely brittle to the touch, while other dyed pieces could take a beating with a sledge hammer as designed. They came from the same mold and base stock, and the dyes between the two ends of the spectrum were identical to the human eye. There are multiple compounds in the "viton" family too, so one might work perfectly and the other might shit the bed. Who knows..
Robbie _________________ Learn how your vintage VW works. And why it doesn't!
One-on-one tech help for your Volkswagen:
www.airschooled.com |
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Alan Brase Samba Member
Joined: March 28, 2004 Posts: 4532 Location: Cedar Falls, Iowa
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Posted: Sat Aug 12, 2017 5:54 am Post subject: Re: Type 4 Dipstick Tube Modification |
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Been many years since I had a driving bay, but i was also plagued with failing boots and in desperation I once just put in a short length of rubber hose. Musta been FI hose size, what is that? 8mm? It was a battle gettin it over the funnel but I did it and and no clamps either side. It worked for years. Near 0 pressure there, not PSI, but rather inches of water measurement. but no leaks after that. I'm sure it is still on the engine, still sitting in my shop waiting for a CEII or Wild Westerner for its new home. More than 20 years now.
Al _________________ Al Brase
Projects: 67 sunroof bug, 67 Porsche 912 Targa, 70 Westy
Dec 1955 Single Cab pickup WANT 15" BUS RIMS dated 8/55, thru 12/55
To New owners: 1969 doublecab, 1971 Dormobile
Vanagons:
80 P27 Westy JUL 1979, 3rd oldest known US
83 1.6TD Vanagon, 87 Wolfie Westy daily driver, swap meet home |
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busman78 Samba Member
Joined: August 17, 2004 Posts: 4524 Location: Oklahoma City, OK
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Posted: Sat Aug 12, 2017 7:02 am Post subject: Re: Type 4 Dipstick Tube Modification |
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Twenty plus years ago fed up with leaky dip stick tubes I did away with the bay style, converted the case to 411/412/914 logical dip stick location. The picture bellow shows a GE case drilled with a dip stick tube installed. Drilling is easy since the tower has the boss for the hole and the indent where the tube lays into. The tube is slightly shorter than what would be on a original Type 4 engine, this made checking the oil easier, you can either lift the hatch or just pull it, dip sticks are flexible enough. At first I had plenty of original T4 sticks, finally had to buy aftermarket early American iron style and chop them down.
This conversion can be done with the engine assembled, really, drain the oil, remove that round cover plate, coat the bit with grease, pack that cavity with a rag, drill the hole, clean out the cuttings, the tube I used is semi tight going in, I used a little JB to permanently set the tube, fit the stick, mark it for full and add, make a cover plate for the old filler tube, have a leak free dip stick day.
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