GS Footpeg Swap Details & Results

[macx]

http://www.mediafire.com/?t2mzy1mncxw

That document also contains links to all the pictures, etc,
to do with the swap

[bikermeow]

Thanks, Macx, for contributing the knowledge. Mind if I put it as a complete post so that it is searcheable with pics?

cheers

[macx]

By all means! I didn't go thru all that JUST to hog it all to myself!

EDIT: I also did a write-up on the external filter, minus the long loop,
if you'd by any chance want to do likewise with it.

http://www.mediafire.com/?dj2jjdyjlm0

But those are just minor warm-ups to what I hope I'll have time to do this winter.
Trans swap, plus - but the plus is a secret for now! :-))

[duegi]

So you 1st removed the internal fuel pump and filter. Are you then working from a gravity only perspective on getting fuel to the TB's? Or is the fuel pump either moved to an external local or replaced with something else? What is pushing the fuel into at high pressure. I'm coming at this from the airhead perspective but will pick up any info quickly. Nor have I dug into this line of thought regarding fuel systems on the oilhead TB set up. I've heard a couple of stories about vapor lock, plugged up charcoal canisters, and collapsing gas tanks on R-RT-GS motos. Who has a thread, publication, though on this. With the miles I'll be riding this seems like a logical set up to me.

[macx]

No, the pump, pickup & sock and everything stays mounted as per the original setup inside the tank.
All that really happens inside the tank is the permanent removal of the stock filter and replacement
with a length of efi fuel hose.

You have to remove the whole assembly to get at the original filter - something you'd have to do
every time you change the filter if you continue to work with the original filter in the original location.

Be sure to get a new large O ring that seals the pump mounting plate to the tank, and be very careful
tightening the small nuts that hold it in place - I've read those little studs can come loose. Probly a
good idea to put a little dab of blue loctite on each one as you shouldn't have to remove it again unless
you have to replace the pump itself or strainer, or something in the fuel gauge float / sender assembly.

[Dr. Strangelove]

Hey, Macx

Thanks for that write up. As a veteran of changing the fuel filter, I am very interested in another approach and yours looks very neat.

1-You say the " line with the filter is 12" long and the other one is 8 1/4" ( I think)

This suggests you changed out the EFI hoses from the original tubing, correct? And by "the other one," you mean the one without the filter, correct?

2-so you did go into the tank and removed the old filter and just replaced it with a length of efi hose, correct?

3-and perhaps a stupid, but a very basic, question...those two lines--the ones with the QDs on them, where does the fuel that passes through each of them go?

In other words what path would a drop of gasoline follow from inside of the tank to the cylinder for firing? I suppose the line with the filter--that's the line going to the fuel pump?

Thanks
John

[macx]

Hey, Macx

Thanks for that write up. As a veteran of changing the fuel filter, I am very interested in another approach and yours looks very neat. Thank you very kindly! My wife says I'm fussy, I like to think I'm "precise"
At least when it comes to things "mechanical".

1-You say the " line with the filter is 12" long and the other one is 8 1/4" ( I think)

This suggests you changed out the EFI hoses from the original tubing, correct? And by "the other one," you mean the one without the filter, correct? Correcto! I like good, sturdy, rubber efi hose, and I sure don't
like those crimp type clamps. I just read a post recently where a rider in cold weather had them seep
because of cold shrink. They're a PITA to get off, and very difficult to put on correctly, even difficult
with the proper tool. Yes, the line going from the tank connection to the filter is 12". The "other" one
is, as you surmise, the line without the filter.

2-so you did go into the tank and removed the old filter and just replaced it with a length of efi hose, correct? You're battin' 1,000! But I found in mine, as I mentioned, that I needed a little more length -
as I specified - to avoid a kink which would restrict flow. Had to be kind of careful to get it all tucked
back into the tank without getting tangled up in the sender mechanism which I undertand is quite delicate,
and tucked into the tank without bending it just from stuffing it in and maybe getting it crooked or whatever.

3-and perhaps a stupid, but a very basic, question...those two lines--the ones with the QDs on them, where does the fuel that passes through each of them go? Not at all, esp if you haven't "been there and done that" -
one is the fuel pressure line from the pump inside the tank. It goes thru the QD and then to the fuel
pressure regulator and distribution manifold. The fuel goes thru the regulator then into a simple manifold
from where the hoses to the injectors go. The other line (without the filter) is the return line where the
excess fuel / pressure returns to the tank from the pressure regulator.

In other words what path would a drop of gasoline follow from inside of the tank to the cylinder for firing? I suppose the line with the filter--that's the line going to the fuel pump? That comes from the electric fuel pump which remains inside the tank, mounted on the inside of that round plate.

Thanks
John

It's always possible to be more clear in a write up, not? I tried but see now I didn't include everything I could have. And I should have taken some pics of the fuel pump assembly inside the tank, that's mounted on the inside of that round plate. But that's NOT gonna happen, now, unless my fuel pump fails or I have to take
that darn plate out for some other reason. Now I believe there is an earlier similar write-up about the guy
that probly invented this system, or at least was the first to write it up, on an 1100 bike. I think there are
some pics of the pump setup in that write-up. I forget exactly where it is, I had a hard time finding it, but
think I could find it again if you'd like to read it. Let me know.

[Dr. Strangelove]

Thanks for the explanation and precise is good, especially on mechanical things that need to be dependable. I concur completely

And, I have seen the inside of the tanks, having replaced the filter about 20k miles ago. Yours looks like a simple mod. The 12" line---does that include the filter's length?
When the need arises to change the filter, obviously the engine off, there is no pressure there, right? The question I am really asking is, Do you need a hose clamp to pinch off that line when changing the filter, or just a rag to soak up the gas in that short length of hose?

Where did you get the filter? Is this a Pep Boys item?

Big thanks again

John

[hotzuk]

Hey there,

What was the big advantage gained by the GS footpeg swap?

[macx]

It got the footpegs about 2" lower and 2" farther forward.

I'm an old man with bad knees and the semi-crotch rocket position
for my legs got very uncomfortable in a very short time.

I'd tried some hiway pegs, but hadn't found any that got the feet
down low enuf so I wasn't sitting on the point of my butt, worse
than nothing. And also found out I didn't like having my feet
THAT far forward, didn't feel like I had good balance or control
or whatever you'd call it.

I wouldn't mind if they were still a little more forward, but they're
pretty close to optimum for me and now I can ride as long as my
butt will take it without any serious leg / knee discomfort.

[macx]

And, I have seen the inside of the tanks, having replaced the filter about 20k miles ago. Yours looks like a simple mod. The 12" line---does that include the filter's length? No, that's just the hose length.
When the need arises to change the filter, obviously the engine off, there is no pressure there, right? The question I am really asking is, Do you need a hose clamp to pinch off that line when changing the filter, or just a rag to soak up the gas in that short length of hose? Best is to avoid changing it like for overnite or something and then some
of the pressure bleeds down, but you still need a rag cuz you'll still have some internal pressure.

Where did you get the filter? Is this a Pep Boys item? Any auto parts store - they usually have cross references
between different brands. Definitely use a metal can, not a plastic one, to avoid the possibility of it bursting.
I put a couple brand and part numbers in that write-up - the Wix # is 33095.

Big thanks again

John