• Required reading for all forum users!!!

    Welcome!
    Register to access the full functionality of the GSResources forum. Until you register and activate your account you will not have full forum access, nor will you be able to post or reply to messages.

    A note to new registrants...
    All new forum registrations must be activated via email before you have full access to the forum.

    A Special Note about Email accounts!
    DO NOT SIGN UP USING hotmail, outlook, gmx, sbcglobal, att, bellsouth or email.com. They delete our forum signup emails.

    A note to old forum members...
    I receive numerous requests from people who can no longer log in because their accounts were deleted. As mentioned in the forum FAQ, user accounts are deleted if you haven't logged in for the past 6 months. If you can't log in, then create a new forum account. If you don't get an error message, then check your email account for an activation message. If you get a message stating that the email address is already in use, then your account still exists so follow the instructions in the forum FAQ for resetting your password.

    Have you forgotten your password or have a new email address? Then read the forum FAQ for details on how to reset it.

    Any email requests for "can't log in anymore" problems or "lost my password" problems will be deleted. Read the forum FAQ and follow the instructions there - that's what we have one for...

  • Returning Visitors

    If you are a returning visitor who never received your confirmation email, then odds are your email provider is blockinig emails from our server. The only thing that can be done to get around this is you will have to try creating another forum account using an email address from another domain.

    If you are a returning visitor to the forum and can't log in using your old forum name and password but used to be able to then chances are your account is deleted. Purges of the databases are done regularly. You will have to create a new forum account and you should be all set.

Oil pressure guage

  • Thread starter Thread starter Craig
  • Start date Start date
C

Craig

Guest
1983 GS1100es. Where would be a good place to mount a oil pressure guage? More to the point, where would I tap into?
 
The chrome galley plug on the right side drill and tap for 1/4" pipe plug
check the diagram here You can mount the gauge there with a 90 deg fitting or run braided line to a remote gauge. NO plastic auto lines
http://www.gsx1100.com/motor/gtips.htm
 
Lynn, I'm thinking of mounting a gauge too, into that galley plug you mention. I've never removed one of these bolts. It's just a bolt that seals oil, right? Nothing to fear by removing it?
Also, can you or anyone recommend a good name in gauges? Because our engines use such low pressure (6-7 psi ?), is there anything important to look for in a gauge? What psi range would the gauge need to cover?
 
It's just a fancy pipe plug. One of my projects is to install a pressure gauge I was going to try a liquid filled fuel pressuer gauge available from places like Summit Racing. They go 0 to 20-25 lbs
 
You will normally see pressures between 0.5 and 5 psi...I use a 0-15 psi gauge. Get a liquid filled gauge or you will be replacing it often.


Hap
 
Ahhh, master Hap. What brand did you buy? Another thought...I've never had a pressure problem that I know of but if you were on a long trip and the oil was pretty hot, what would be the lowest psi reading acceptable before you had to worry?
You said 0.5 was still in the normal range? That's like, almost nothing 8O .
Did you also tap into the galley bolt as Lynn described? Please excuse all the questions. Trying to learn here. :)
 
Hap,
I would also like to know where you found a liquid filled, low pressure gauge. I bought a mini-gauge made by VDO when I installed the oil cooler, but it finally has developed a problem. It still measures, but will not return to zero when the bike is shut down. I am going to replace it, but if I can get a liquid filled gauge, that would be even better.
 
Hap: I put in the oil pump gears from APE Race Parts and they said that I should expect at least 30-50 psi depending on RPM.
 
I'm also curious as to where you found a liquid-filled gauge...

:)
Dm of mD
 
The GS motorcycles with ball bearing cranks rely on volume, not pressure. The plain bearing motors, such as the 16 valve GS750, required a high-pressure oil system and you could expect 30 to 60 PSI. Putting the different oil pump gears will not significantly increase oil pressure but will increase flow volume by about 25% as I recall.

It took me a while to find a 0-15 PSI oil filled gauge. I got it from an industrial supply house. I'm in Houston for the next few days in an instrumentation class but when I get back home I will check the brand name of the gauge. It's a 1-1/2" diameter gauge. Be forewarned...quality gauges are not cheap. It costs about $50 as I recall.


Hap
 
This is what I have on my bike:

stainless.jpg



http://www.mcdanielcontrols.com/mod...&p_spec_CH=Options&UPDATE=MODEL&UPDATEVALUE=S

It is the 1 1/2" or 40mm diameter with a center back 1/8" NPT connection.


Hap
 
Thanks Hap! I'll check out their site.
I've never done this before so I have a few questions. I'll mount mine on the galley bolt as Lynn called it. What size pilot hole did you drill and what size tap? Do you get the connectors with the gauge or do you have to go to the hardware/auto store? Any thread sealant used?
I know you mentioned "1/8 NPT" but Lynn mentioned 1/4"? Is there an advantage to one or the other? I know nothing about this subject and don't want to screw things up.
 
KEITH KRAUSE said:
I'll mount mine on the galley bolt as Lynn called it. What size pilot hole did you drill and what size tap?
Click to expand...
The pilot hole size should be 11/32", as I recall, and the tap will be 1/8 NPT. Often the tap will have the pilot hole drill size you need stamped on the side of the tap.

KEITH KRAUSE said:
Do you get the connectors with the gauge or do you have to go to the hardware/auto store?
Click to expand...
I purchased the 90 degree brass connector (it was female on one end and male on the other) from the local Ace Hardware store.

KEITH KRAUSE said:
Any thread sealant used?
Click to expand...
Teflon pipe tape is all I used, never had a leaking problem.



KEITH KRAUSE said:
I know you mentioned "1/8 NPT" but Lynn mentioned 1/4"? Is there an advantage to one or the other? I know nothing about this subject and don't want to screw things up.
Click to expand...
You will see the difference when you buy the connector...1/8 NPT looks like 1/4" and 1/4" NPT looks like 3/8"...pipe thread is very deceptive in the way it looks. In my opinion, 1/4" is way too big for this application.

I suggest you take your galley plug to a local machine shop and tell them what you want. Bring the connector with you so they can see it. It needs to be centered drilled by a drill press. It should cost between $5 and $10 to get it done.

Hap
 
Thanks for all that info Hap! I'll be taking it into the machine shop for sure.
I'd like to find a SS elbow though for cosmetic reasons, if they can be found.
What's your opinion about ordering the gauge with either SS or brass internals? I think I want silicone filled instead of glycerine too. Any opinion?
 
KEITH KRAUSE said:
Thanks for all that info Hap! I'll be taking it into the machine shop for sure.
I'd like to find a SS elbow though for cosmetic reasons, if they can be found.
What's your opinion about ordering the gauge with either SS or brass internals? I think I want silicone filled instead of glycerine too. Any opinion?
Click to expand...

The internals for that gauge are 316 stainless. Silicon has a greater temperature range than glycerine but that is in the lower temperatures (-4 to -40 degrees F). I would go with what was cheaper and available.

Hap
 
Oil Pressure Gauge - Liquid-Filled

Oil Pressure Gauge - Liquid-Filled

I have just bought a quantity of silicone-filled, stainless, black face with white markings and indicator, shock-resistant, 0-15 psi gauges from Marshall;

http://www.marshallinstruments.com/products/M.cfm

M.jpg
[/img]

Only $24.00 US each plus shipping. These are perfect for GS or any low oil pressure Japanese bike. Email me for details.

Sincerely,
Vince
 
Just as a few notes. NPT is based on the ID of the pipe. 1/8" npt is more like 3/8" but the hole in the middle is about 1/8" 1/4" has a 1/4" hole down the middle, etc... 1/2"npt are HUGE. :-)

Stainless Steel fittings are not pressure rated. They are cosmetic. Of course at oil system pressures it isn;t a real issue, but I will not use any fitting that's not Brass, or nickel plated brass for that reason. Also you're screwing the fitting into aluminum.... So a softer material would be reccomended.

NPT taps are a pain in the butt to use, they are tapered so are cutting along the whole length of the tap. But it IS a project I would trust the average user to be able to do at home. Just use proper tapping technique and take your time.
 
The Marshall gauges above have a 1/8" NPT fitting (brass) on the back. They can be direct mounted or panel-mounted with a u-bracket and appropriate hose / tubing. They are silicone-filled to lessen the high/low temperature problem. The case is stainless and weather-sealed, the movement shock-proof.
 
You must log in or register to reply here.
Back
Top