Sportfire/Trailfire oil pump line

Post by **Matt** » Thu Dec 10, 2009 9:11 pm

OK, stupid question: The inlet on the oil pump on my Sportfire seems to be made for larger line then 1/4", but the tank outlet is 1/4". Is the line suppose to be larger after the oil filter?

johnnycyclone · Post by **johnnycyclone** » Thu Dec 10, 2009 11:05 pm

Matt, the only stupid question, is the one that is not asked. Anyways, I can't answer your question based on any written knowledge only what I have seen. My 82 Sportfire is the same, 1/4" outlet at the tank, slightly larger inlet at the pump, but the line was all 1/4" from tank to inlet. Not sure if it was the original line or not. So I went ahead and replaced it with 1/4" line from tank to pump. It's a tight fit on the pump, but you should be able to get it on. Not sure if this helps a lot, but it's one point of data.

Terre

427cobra · Post by **427cobra** » Thu Dec 10, 2009 11:40 pm

Matt,

1/4" all the way. I use the yellow Tygon line or yellow Oregon line. It will fit over the oil pump inlet.

It is a tight fit but will stretch over the inlet.

:letitsnow:

Post by **Matt** » Fri Dec 11, 2009 8:20 am

OK, thanks.

Post by **guitardude081** » Fri Dec 11, 2009 12:51 pm

Matt, a little trick to make your sporty pump bleeding go faster is to bleed the pump using the bleed screw. Then remove the pump from the recoil. Chuck up the drive key in your favorite drill and spin the pump with the lever at wide open until you get oil coming out your lines. It's a lot better than running the sled and having to hold the pump open with a coat hanger while you make adjustments. The Sport/Trail is the only oil pump that I've seen that is driven the way it is.
~Jack

Post by **ICCSF 108** » Sat Dec 12, 2009 1:09 am

When replacing fuel/oil lines I chew on the end for about 30 seconds this softens it up & also warms it up so it slides on easier.
better & safer than using a lighter on a fuel line to heat it up,

Kenny

JDT · Post by **JDT** » Sat Dec 12, 2009 6:27 pm

Kenny I think I know what is the root cause of your IBS.

Post by **guitardude081** » Sun Dec 13, 2009 7:00 pm

Kenny,
I suppose you use fuel line to drink your "Klotz and Coke" cocktails too.

~Jack

A1 SLEDER JIM · Post by **A1 SLEDER JIM** » Tue Dec 15, 2009 7:54 am

After working on these since the 70's I found to fill the lines before you start is the best way. I do it with a bottle that has a squirt top as used in chem labs (water bottle). The top fits into the oil line you must only remove the other end untill it fills. It will not fill if attached. I use the squirt bottle for engine assemby and keep it filled with two stroke oil. Works great, simple and quick.

JDT · Post by **JDT** » Tue Dec 15, 2009 8:34 am

I too do what Jim does. I dribble and squirt oil all over as I put an engine back together.

Sprailfire340 · Post by **Sprailfire340** » Sat Dec 19, 2009 11:17 am

Thanks for the tip Jim - I replaced all gas and oil lines on my sportfire Thurs night. Priming oil line took about a minute with the squirt bottle. I left a small air bubble in the line and took my first spin of the year. What a great feeling...got back in garage and confirmed the pump was pulling oil as bubble had moved toward pump end.

On another note check your fan when you pull it out of storage. Mice had infiltrated the fan and packed the engine shroud plum full of fibers. I pulled enough packing out to fill a gallon pail.

Post by **Matt** » Sun Dec 20, 2009 8:20 am

I opened the bleeder screw until the line filled, then closed it and used the drill trick to spin the pump, but I didn't get any oil moving. It must be a bad pump, unless I missed something.

lwb140 · Post by **lwb140** » Sun Dec 20, 2009 7:58 pm

im working on an 81 liquifire this evening, with the oil pump in a drill and the throttle control on it WOT how much oil should come out of the outlets it just kind of dribbles out a little once in awhile ,should i prime it better before i call it bad or is this about right ?? wade

jdsnowfire · Post by **jdsnowfire** » Sat Jan 02, 2010 4:37 pm

http://www.jdsleds.com/community/viewto ... +injection
instructions for installing oil injection on a sportfire.

guitardude081 wrote:Re: Sportfire/Trailfire oil pump line
by guitardude081 on 11 Dec 2009 10:51
The Sport/Trail is the only oil pump that I've seen that is driven the way it is.
~Jack

i found these similar pumps- anyone know if anyone still makes a pump that will work for a sportfire/trailfire? or
http://www.aerocontrols.net/OIL_INJECTI ... CTIONS.pdf
http://www.sportpilot.org/magazine/feat ... r%20ON.pdf
http://images.google.com/imgres?imgurl= ... 0%26um%3D1

Post by **Matt** » Sat Jan 02, 2010 9:22 pm

jdsnowfire wrote:http://www.jdsleds.com/community/viewto ... +injection
instructions for installing oil injection on a sportfire.

guitardude081 wrote:Re: Sportfire/Trailfire oil pump line
by guitardude081 on 11 Dec 2009 10:51
The Sport/Trail is the only oil pump that I've seen that is driven the way it is.
~Jack
i found these similar pumps- anyone know if anyone still makes a pump that will work for a sportfire/trailfire? or
http://www.aerocontrols.net/OIL_INJECTI ... CTIONS.pdf
http://www.sportpilot.org/magazine/feat ... r%20ON.pdf
http://images.google.com/imgres?imgurl= ... 0%26um%3D1

As Jack says, they look the same, but they may not be driven the same way the Deere one is with the flexible drive key.