Reply
 
Thread Tools Display Modes
 
Old 01-02-2006, 09:12 PM   #31
Bus Geek
 
lapeer20m's Avatar
 
Join Date: Nov 2003
Location: near flint michigan
Posts: 2,653
the fuel goes into the lifter pump (12volt or mechanical) then heads off to the fuel filter. From there it goes to the injector pump The fuel is not under much pressure until after it goes through the injector pump. Sometiems the lifter pump is connected physically to the injector pump.

There are two methods that i've seen commonly for tapping into the steel fuel lines....

the most proffessional looking method is to use a threaded "T" where the fuel line connects to the fuel filter, usualy 3/8" npt.

the other option is to just cut the steel fuel line and attach the "t" using rubber fuel line over top of the steel and held in place with hose clamps. I have a Mercedes Benz from 1977, and it came from the factory with this setup.

the steel fuel lines themselves use some sort of compression fitting, but i never had a convienent sorce for them.
__________________
Quis custodiet ipsos custodes (who will watch the watchmen?)
lapeer20m is offline   Reply With Quote
Old 01-02-2006, 10:19 PM   #32
Bus Nut
 
Eric von Kleist's Avatar
 
Join Date: Feb 2004
Location: Grundy, Virginia
Posts: 632
Year: 1985
Coachwork: ThomasBuilt
Chassis: International Harvester S-1700
Engine: 9L IHC V-8 Diesel 180HP
Rated Cap: 60
Thanks! That's a MAJOR help!

That's exactly what I had decided to do. I'm going to TEE into the fuel line where it comes out of the final oil filter (in the set of two). I'll use a close nipple and a TEE. The fuel line has the kind of fittings you mentioned. It is covered with some kind of braided fabric, and is flexible, but I'm not sure what is inside, so I don't want to go cutting and splicing it.

I soldered some on my heat exchanger this evening. After all my worries, I'm going with a copper heat exchanger. I just don't have the capabilitie$ or time right now to have a SS one made up. It's a 2' long piece of 1" copper pipe that will have a 1/2" pipe running through it. All the fittings are copper. It's soldering together very easily (which makes me worry -- anything easy is usually the prelude to a major disaster). It consists of a 1/2" to 1" reducing coupling on each end that the 1/2" pipe will fit through for the coolant to flow through on its way to the tank mounted heat exchanger; and three 1" copper TEEs, two at the ends and one in the middle. The two end TEE will be for the WVO to enter and exit through, and the middle TEE is for mounting a temperature gauge sending unit in. The process of making this is too messy for taking pictures (read, I was in a hurry), so I'll only have a photo of the finished unit. I'm going to mount it to the firewall somewhere under the hood.

I bought an electric temperature gage (Sunpro model) because I can get another sending unit for it, and put one in the heat exchanger under the hood, and one in the drain plug in the tank. Then I can use a switch (TRACTOR BEAM/PHOTON TORPEDO) to check the temperature in each location with one gauge. The mechanical temperature gauges have a 6' tubing linkage, and that limits the distance from the gauge to the heat source (plus, only one unit can be hooked to a gauge). The electric ones work "with any length wire", so that way I can monitor the tank, which is farther than 6' from the dashboard where the gauge will be mounted.

Thanks, again, Lapeer! That information is extremely helpful!
Eric von Kleist is offline   Reply With Quote
Old 01-03-2006, 07:41 AM   #33
Bus Geek
 
lapeer20m's Avatar
 
Join Date: Nov 2003
Location: near flint michigan
Posts: 2,653
Quote:
Originally Posted by Eric von Kleist
The fuel line has the kind of fittings you mentioned. It is covered with some kind of braided fabric, and is flexible, but I'm not sure what is inside, so I don't want to go cutting and splicing it.
My international dt360 motor has fuel lines like the ones you mention. Inside the braided fabric are plastic fuel lines. Mine are rather stiff, but still somewhat flexible. I spliced into mine and was able to put tight fitting rubber fuel line over top of the plastic fuel line and hose clamp it in place.

just thought i'd share

I still think the preferred method is the one you are planning on utilizing the npt fittings on the fuel filter.
__________________
Quis custodiet ipsos custodes (who will watch the watchmen?)
lapeer20m is offline   Reply With Quote
Old 01-05-2006, 12:03 AM   #34
Bus Nut
 
Eric von Kleist's Avatar
 
Join Date: Feb 2004
Location: Grundy, Virginia
Posts: 632
Year: 1985
Coachwork: ThomasBuilt
Chassis: International Harvester S-1700
Engine: 9L IHC V-8 Diesel 180HP
Rated Cap: 60
Gods, will it never end?!?! I spent the past two days under the bus doing various things (when I wasn't running to Lowes to give them all my $$). The tank is hung. Talk about a tight squeeze! It just barely nudges the skirting out ever so slightly. I used to jacks to lift it and push it into place.

The fuel and coolant lines are run from the tank up to the engine compartment. I used pipe hanger clamps to hold them in place along their run, the galvanized kind that screws down on either side. I used #10 x 5/8" self-drilling screws, and MAN, was that a lifesaver. Well worth the expense. The fuel supply line and the coolant line to the tank are both insulated. The return lines (coolant from tank and fuel return) are not.

The big bear right now is mounting my final heat exchanger under the hood. It's going to take a bit of fabrication to get it mounted, that and relocating the horns. I want it mounted to the body instead of anything attached to the engine itself. I also still need to mount the fuel selector valve. Then i need to splice the lines.

Oh, yeah, I have to cut some kind of fuel filler access in the sheetmetal of the bus, as right now there is no access to the fill tube on the tank!

Oh, yeah, I also have to actually find some WVO somewhere...otherwise, this is an awfully expensive and complicated spare diesel tank...

(I do plan to put diesel in it to test the system out.)

Here's what it looks like with the tank installed



Bigger picture of it here.
Eric von Kleist is offline   Reply With Quote
Old 01-05-2006, 05:41 AM   #35
Bus Nut
 
Griff's Avatar
 
Join Date: Jan 2005
Location: Off-Grid
Posts: 740
Year: 1982
Coachwork: Thomas
Chassis: IH S1723
Engine: IH V345 Gas V8
Rated Cap: 66
Hang in there with it, Eric! It will all be worth the time, $$$, and effort further down the road where you'll be rewarded with lower fuel costs, plus, look at what you've LEARNED!

Learning is living & vice versa. I think what you've done with your bus so far is great! I know I have learned from it. And while I don't have a diesel NOW, my next bus may, and it'll be easier for me because of all the bus growing pains I've watched you and others go through!
__________________
~(G)Q Arduously Avoiding Assimilation
Griff is offline   Reply With Quote
Old 01-06-2006, 03:57 PM   #36
Bus Nut
 
Eric von Kleist's Avatar
 
Join Date: Feb 2004
Location: Grundy, Virginia
Posts: 632
Year: 1985
Coachwork: ThomasBuilt
Chassis: International Harvester S-1700
Engine: 9L IHC V-8 Diesel 180HP
Rated Cap: 60
Yippee! Incremental progress!!

I got all the plumbing (fuel lines, coolant lines) run finally! The lines run from the tank to the engine compartment, where they dead end for now. I was going to try to hook them up, but since I'm moving today, I decided not to cut any Important Parts on a day when I intend on driving the bus. You know how that kind of thing goes....

I got the heat exchanger installed, but not in the engine compartment. It's located roughly beneath the driver's seat. There will only be about 5 feet from that location to the injector pump, so the fuel shouldn't cool too much in that distance, especially since the line is insulated. The exchanger is mounted to the frame with three pieces of 1/8" steel for brackets, and connected to those by 1" pipe hanging clamps on 3/8" all-thread. It shouldn't vibrate much at all.



At least the major part of the work is done (I hope). Still have to mount the fuel selector valve, and plumb the final connections under the hood. Also have to wire up the fuel pump (wire is run) and the fuel selector and the sending unit for the WVO tank. I'm moving to the park this evening, and that kind of minor work I can do there without disturbing people.

Oh, gotta cut a fuel filler hole in the side of the bus!



More recent pics here.
Eric von Kleist is offline   Reply With Quote
Old 01-09-2006, 01:57 PM   #37
Bus Geek
 
lapeer20m's Avatar
 
Join Date: Nov 2003
Location: near flint michigan
Posts: 2,653
looks like it's really comming together nicely!
__________________
Quis custodiet ipsos custodes (who will watch the watchmen?)
lapeer20m is offline   Reply With Quote
Old 01-09-2006, 02:53 PM   #38
Bus Nut
 
Eric von Kleist's Avatar
 
Join Date: Feb 2004
Location: Grundy, Virginia
Posts: 632
Year: 1985
Coachwork: ThomasBuilt
Chassis: International Harvester S-1700
Engine: 9L IHC V-8 Diesel 180HP
Rated Cap: 60
Thanks! I'm at a tiny bit of a slowing point, since school just started, but I hope to make "incremental progress"... I have yet to hook up the lines and mount the fuel selector and wire the gauges and wire the 120VAC heater element in the tank. But at least I got all the noisy stuff done before I moved on Friday (the parts that required loud swearing and throwing of power tools). I'm living at the state park where I work now. It's nice to hear owls at night...instead of crackheads!
Eric von Kleist is offline   Reply With Quote
Old 01-10-2006, 02:31 PM   #39
Skoolie
 
Join Date: Mar 2005
Location: Plymouth MA
Posts: 186
I recommend you install insulation on the fuel return lines anyway, this will dump pre-warmed fuel back into the tank at somewhat higher temps.
And if you can, insulate the tank where possible.

The advantage to this is to use a little more of that "free" heat to prewarm the tank.

Y'see, the oil temp will rise 'x' amount of degrees during it's run to the injectors. If it's a 80 degree temp rise, then if the tank's ambient veg temp is 50 degrees you can expect a 130 degree fuel temp at the injectors. The hotter, the thinner.
BUT if it's only 25 out, the veg temp will only rise to 105 degrees, probably still too cold to use. Am I right here?

Anyway, something to consider....I'm curious as to WVO conversion, as I plan on doing something like it someday, and will lurk until I have drained everyone here of all knowledge.
__________________
The tool storage is nice, but where do I put the bed?
Ryan Grimm is offline   Reply With Quote
Old 01-11-2006, 08:32 AM   #40
Bus Nut
 
Eric von Kleist's Avatar
 
Join Date: Feb 2004
Location: Grundy, Virginia
Posts: 632
Year: 1985
Coachwork: ThomasBuilt
Chassis: International Harvester S-1700
Engine: 9L IHC V-8 Diesel 180HP
Rated Cap: 60
I have been thinking about going back and insulating the return lines. When I installed the lines, I insulated them with polyethelyene pipe insulation, the kind that is pre-slit almost all the way through. I slid the insulation over the lines without slitting it, so that I wouldn't have to go back and tape it up to seal it. I wish I had done that with the return lines. I can go back and insulate them, but I either have to unfasten them and slide the insulation over the lines (probable course of action) or slit the foam and seal it shut after I insulate the lines (I really don't like that idea).

I am planning on insulating the tank, although it will cover up that pretty red paint. There is a self-adhesive insulation material that is used in the HVAC industry that I would like to use, but I don't have a source for it yet. It is a foam-rubber material that has a metal foil on one side and adhesive on the rubber face. I think it has about an R2 factor in 1/4" thickness, which is better than nothing. I can find it as pipe insulation sold in 2" wide strips at the hardware store, but I know it comes in sheets, as well, and that's what I want.
Eric von Kleist is offline   Reply With Quote
Reply

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
Newbie here with a request rcarr72 Skoolie Conversion Projects 1 11-08-2013 01:55 PM
Iowa Registration process iowacamper Titles, Insurance, Registration and Money Matters 1 07-02-2013 05:03 AM
picture request somewhereinusa Conversion General Discussions 6 04-17-2013 02:42 PM
Lost title process? Griff Everything Else | General Skoolie Discussions 2 06-17-2005 03:29 PM
Page 6 added.... Vern1 Skoolie Conversion Projects 5 04-22-2004 09:38 AM

» Virginia Campgrounds

Reviews provided by

Powered by vBadvanced CMPS v3.2.3

All times are GMT -5. The time now is 01:48 AM.


Powered by vBulletin® Version 3.8.8 Beta 4
Copyright ©2000 - 2017, vBulletin Solutions, Inc.