TheSamba.com :: View topic

Sun Jul 27, 2014 9:27 am

Well the Colonel sure could use your help. I have a 1970 VW Bus. I believe the fuel pump is failing. I have fuel in the engine oil. I have a light fuel leak around the two gaskets on the fuel pump flange/base. I ordered the parts from Wolfsburg West. Here is what I have. The pump. New flange. Two gaskets. Long push rod. I noticed the original fuel pump has the VW stamp on it. The new one is a Brosol. The orginial has a screw inlet for the metal fuel line and the outlet is a rubber hose to the carb. The new pump will not accept the metal line screw. I was wondering if there are any thoughts on how to proceed. How do you bridge from metal screw inlet on the pump to the metal line? I was thinking now maybe I should get the rebuild kit instead of the new pump? I thought this was going to be very easy. I am sure it still is. Appreciate any suggestions! Code: [img]http://www.thesamba.com/vw/gallery/pix/1236479.jpg[/img]

Sun Jul 27, 2014 9:31 am

Cut the metal line and use a piece of fuel hose for the bridge.

Sun Jul 27, 2014 9:34 am

It'd be a shame to cut the end off the threaded fuel line, you may be able to push the nut back a few inches on the line and put a hose on the end. The VW pump is the best you will get but the quality of the rebuild kits lately has been really dissapointing, if you do go the rebuild route try to find an older NOS one.

Sun Jul 27, 2014 9:35 am

Just behind the distributor I have a brass fitting. You can't see it in the picture. Should I just disconnect the metal line from the pump, disconnect the brass fitting, get a fuel hose, cut, clamp, done? Do you know what size of hose might work. Thank you for the reply.

Sun Jul 27, 2014 9:37 am

busdaddy wrote: It'd be a shame to cut the end off the threaded fuel line, you may be able to push the nut back a few inches on the line and put a hose on the end. The VW pump is the best you will get but the quality of the rebuild kits lately has been really dissapointing, if you do go the rebuild route try to find an older NOS one.

I like your suggestion. Perhaps I could do this until I get the VW pump rebuilt with a NOS.

Sun Jul 27, 2014 9:39 am

I think its either 1/4" or 5/16" for the hose

I'll take that pump off your hands though.

Sun Jul 27, 2014 9:47 am

5.5mm is what VW used but German braided fuel line is dangerous when combined with modern fuels, 1/4" is a little loose but will work, don't skimp on clamps, the worm ones cut into the line, spend a couple bucks more and get the good ones:

When shopping for line get one with a J30R9 rating or higher preferrably with a barrier liner, most FLAPS have it, ask for fuel injection hose.

Sun Jul 27, 2014 9:59 am

That is what the guys at WW said. I did not pay enough attention to that threaded part and was not expecting that. I think I can do this though with no trouble. Heading down to the flaps to see what they got.

Sun Jul 27, 2014 10:01 am

I PM'd you, busdaddy says you should be good with that.

Sun Jul 27, 2014 10:08 am

http://www.airheadparts.com/vintage-vw-parts/new-l...-111198555

I'd take this over that Brazilian

Sun Jul 27, 2014 10:33 am

Beware, I was recently told of a new rebuild kit failing in only a couple hundred miles, the end of the pull rod apparently wore away, China strikes again :cry:
I don't know where he got the kit but he's not a cheapskate so it would have been a supposedly good quality one, it's likely all the kits come from the same supplier anyways.

Sun Jul 27, 2014 10:37 am

lustig69 wrote: http://www.airheadparts.com/vintage-vw-parts/new-l...-111198555

I'd take this over that Brazilian

That's not the right rebuild kit for the OP's pump. Some of the parts
might work. If the main diaphragm, which is probably all he needs, works in the VW/Pierburg round-top
pump he has, that would be my choice also

Quality of rebuild kit parts seems to be all over the place. It may be impossible to get the correct fuel pressure with kit parts.
Using the old diaphragm spring with the new diafram might work.

Sun Jul 27, 2014 10:37 am

To link to this post
Code: [url=https://www.thesamba.com/vw/forum/viewtopic.php?p=7302183#7302183]Fuel Pumps[/url]

1968-70 T2 fuel pump VW prt#?
Pierburg VW 3 8289
40 HP fuel pump rebuild kit 111-198-553.

Replacement Airtex 1070

Hello, note there are two styles of pumps out there.
One has a recessed plunger arm. Generator style = 107.5mm (4.25) pushrod.
One has a protruding plunger arm. Alternator style = 100mm (4") pushrod.

There was also a angled pump with a Generator style base produced.

One has a recessed plunger arm. Generator style = 107.5mm (4.25) pushrod.
One has a protruding plunger arm. Alternator style = 100mm (4") pushrod.

Thanks sxuxrxf.

You will also need to adjust the pushrod height and pressure per your repair manual. Good Luck

http://vwparts.aircooled.net/Mechanical-Fuel-Pump-Upright-Engine-w-Alternator-p/113-127-025g.htm
http://vwparts.aircooled.net/Mechanical-Fuel-Pump-1961-65-Type-1-1960-65-T2-p/211-127-025.htm

Sun Jul 27, 2014 10:40 am

http://www.hotvws.com/content.php?contentID=45

Sun Jul 27, 2014 10:50 am

http://www.wolfsburgwest.com/wired/wired_12_99/wired_12_99.htm

1. Early 25hp pump
2. 36hp, 1954-1957
3. Late 36hp

1. 40hp with threaded inlet pipe
2. 1300-1600cc
3. Alternator style fuel pump

Sun Jul 27, 2014 11:18 am

I faced a similar fuel line situation. I started at the tank with new hose, used a double barb brass nipple to go through the fire wall. That hose can go to a filter or directly to the carburetor. After an OG fuel pump failure I bought a "made in Brazil" fuel pump at a FLAPS. The instructions were in Portuguese and the inlet and outlet were reversed from the OG pump. Entrada and salida. Keep your hoses out of alignment with the fan belt and away from the distributor and high tension wires. Many Sambans recommend keeping filters out of the engine bay.

Aloha
tp

Sun Jul 27, 2014 1:04 pm

busdaddy wrote: 5.5mm is what VW used but German braided fuel line is dangerous when combined with modern fuels

Another bus regular posted that you can buy the 5.5 MM braided hose now at the VW dealers. He posted a pic of the hose with the VW/Audi logo on it. You'd wonder if it's a new rubber compound in it for todays fuels? I'm going to go by my VW dealer tomorrow and check it out.

Sun Jul 27, 2014 1:11 pm

wcfvw69 wrote: I'm going to go by my VW dealer tomorrow and check it out.
Please do, perhaps you can soak a section in known ethanol gas to see how it looks in a few weeks.

Sun Jul 27, 2014 1:18 pm

busdaddy wrote: wcfvw69 wrote: I'm going to go by my VW dealer tomorrow and check it out.
Please do, perhaps you can soak a section in known ethanol gas to see how it looks in a few weeks.

subscribed

Wed Jul 30, 2014 11:23 am

lustig69 wrote: busdaddy wrote: wcfvw69 wrote: I'm going to go by my VW dealer tomorrow and check it out.
Please do, perhaps you can soak a section in known ethanol gas to see how it looks in a few weeks.

subscribed

So.. I went to my local VW dealer and asked if they had the 5.5MM braided fuel hose w/the Audi/VW logo on it. He said VW discontinued it 6-8 months ago. He stated there was no demand for it since none of their new cars use it. I'm not this parts guy was the brightest bulb in the light strand but he stated Wolfsburg West sells the same thing. I said, no they don't. The fuel line I saw had the Audi logo on it and WW does not. He then looked puzzled.

I may call a couple of other VW dealers parts departments in the next couple of days just in case this guy was FOS.