300td fuel injection pump good enough for veg?

For discussing the modifications needed for diesel vehicles to run with 2 tank veggie oil conversions.

Moderators: SunWizard, coachgeo

300td fuel injection pump good enough for veg?

Postby zaca33 » Fri Jun 18, 2010 8:30 am

Do y'all think that the stock 300td fuel injection pump on my 1980 w123 is strong enough to run veg, or do i need to boost it with another pump? Do i need to worry at all about degrading and blowing any seals, etc.? I'm almost ready to start running wires and splicing lines. =]

Thanks
1979 W123 Mercedes 300D body and 300TD engine
zaca33
 
Posts: 12
Joined: Tue Jun 01, 2010 5:21 am

Re: 300td fuel injection pump good enough for veg?

Postby SunWizard » Fri Jun 18, 2010 10:16 am

zaca33 wrote:Do y'all think that the stock 300td fuel injection pump on my 1980 w123 is strong enough to run veg, or do i need to boost it with another pump?

Yes its the best IP you can find for VO. Its your lift pump that sometimes people add another one, but your stock lift pump is also the strongest you can get for VO so I use it for both fuels.
Do i need to worry at all about degrading and blowing any seals, etc.?

No. You need to worry about plumbing it correctly if you are doing a 2 tank conversion, see examples in the converted vehicles section here. There are many ways to do it. I did my mercedes like my truck shown here.
YVORMV - Your veg. oil results may vary.
95 Dodge Cummins 4x4 SVO WVO conversion.
81 Mercedes 300D- stock and happy on V80/D20 blend.
Low fossil net zero house- 100% solar power and heat.
SunWizard
Site Admin
 
Posts: 1723
Joined: Mon Dec 11, 2006 2:53 pm
Location: N. Colorado

Postby zaca33 » Fri Jun 18, 2010 4:16 pm

This may sounds stupid, but...I have a lift pump as well as an injection pump? I've been doing a lot of reading and realize that most people have both, but looking through my haynes manual I found no reference to it. Do lift pumps go by other names? Where is it exactly? I thought that i had identified most everything in my engine compartment, but maybe not.

I believe my system was designed to run like this one: http://worcester.indymedia.org/images/Greater%20Diagram%20Fuel.jpg. But I was looking at yours as a possible alternative. I realize that the first one puts the filters under vacuum; which I know you don't like Sun. Forgetting the potential for increased air leakage, could I simply switch the fuel filters to those made to work under vacuum? Or is it more complicated that that?

I don't have a FPHE or any sort of insulation. I was hoping to get the system up and running and then install those later this summer. I've got to get them in before the cold Minnesota winter comes.
1979 W123 Mercedes 300D body and 300TD engine
zaca33
 
Posts: 12
Joined: Tue Jun 01, 2010 5:21 am

Postby SunWizard » Sat Jun 19, 2010 8:36 am

zaca33 wrote:This may sounds stupid, but...I have a lift pump as well as an injection pump? Where is it exactly?

On the side of the IP.
could I simply switch the fuel filters to those made to work under vacuum? Or is it more complicated that that?

And make sure the filters in and out ports are installed the right direction.
I don't have a FPHE or any sort of insulation. I was hoping to get the system up and running and then install those later this summer.

Its much easier to install the FPHE while you have the fuel and coolant lines already cut and drained, and it helps even in the summer to get the best performance.
YVORMV - Your veg. oil results may vary.
95 Dodge Cummins 4x4 SVO WVO conversion.
81 Mercedes 300D- stock and happy on V80/D20 blend.
Low fossil net zero house- 100% solar power and heat.
SunWizard
Site Admin
 
Posts: 1723
Joined: Mon Dec 11, 2006 2:53 pm
Location: N. Colorado

Postby zaca33 » Sun Jun 20, 2010 7:43 am

Thanks sun.

I was going to head over to junk/salvage yard later this week to get a few parts. I hadn't thought about it before, but maybe I'll see if I can pull a fphe while I'm there. Any thought on we're I might find one?
1979 W123 Mercedes 300D body and 300TD engine
zaca33
 
Posts: 12
Joined: Tue Jun 01, 2010 5:21 am

Postby SunWizard » Sun Jun 20, 2010 9:57 am

zaca33 wrote:I'll see if I can pull a fphe while I'm there. Any thought on we're I might find one?

None, they don't use them on cars/trucks stock. See ebay.
YVORMV - Your veg. oil results may vary.
95 Dodge Cummins 4x4 SVO WVO conversion.
81 Mercedes 300D- stock and happy on V80/D20 blend.
Low fossil net zero house- 100% solar power and heat.
SunWizard
Site Admin
 
Posts: 1723
Joined: Mon Dec 11, 2006 2:53 pm
Location: N. Colorado

Postby zaca33 » Sun Jun 20, 2010 12:24 pm

they don't use them on cars/trucks stock


No, I know, but they're used in refrigerant applications, water heaters(?) and radiant flooring. I was wondering if there was something i wasn't thinking of.
1979 W123 Mercedes 300D body and 300TD engine
zaca33
 
Posts: 12
Joined: Tue Jun 01, 2010 5:21 am


Return to 2 Tank veggie oil conversion and General discussion

Who is online

Users browsing this forum: No registered users and 0 guests

cron