What´s the size of the oil drain plug?

[491810]

Hi guys,

I bought a Koso dual temp gauge to meassure the oil in the engine as well as in the swing arm.

The 1/8" NFT - which came with the kit - fits perfectly in the engine. But can please anyone tell
me what´s the size of the oil drain plug/screw in the swing arm to order the right koso adapter??

 

[Negative]

There's a parts cross reference thread somewhere on here that has the drain plug dimensions... Do a quick search for "parts cross reference thread"... I'm on my Droid right now or I'd post ya a link to it...

 

[therealou]

It's sticky'd under general motorcycle chat if you haven't found it yet.

 

[491810]

The thread didn´t helped regarding the oil drain plug. I now just order a sensor and a direct adapter in M16x1,5.
Hopefully one of both fits without problems. I just measured my oil drain plug and it seems to be a M16. Let´s see.

 

[fox8701]

Where is the engine oil drain plug?

 

[user_deleted]

the oil drain plug and the primary drain plug are the same...same O-ring...same required 5/8th inch socket or wrench for removal. the size is 1/2X20 sae.
the oil drain plug is located at rear frontal area left side of swingarm. the primary drain plug is located bottom center of primary housing cover.

 

[fox8701]

I know all of that, but as to my question: http://www.buellxb.com/Buell-XB-For.../Xb12-is-this-an-engine-drain-plug-Pic-inside

Then what is that plug for?? ^^ if the so called drain plug for the oil is In the swing arm, and the primary fluid drain plug is on the underside of the primary, then what is the plug on my topic above; there must be a way to drain the engine somehow is my point..

 

[stellio78]

There is another plug to drain more of the engine oil but requires removal of the muffler.
This is a flush allen key plug on the R/H side of the engine at the lowest point a few inches aft of the oil filter

 

[user_deleted]

there must be a way to drain the engine somehow is my point..

negative. read up on "dry-sump" motors. no "drain" provision.

 

[fox8701]

lunatic, I have read up on them before, it just makes me wonder why their wouldn't be some type of drain on it, I understand that very little oil stays in the area of the crank but I'd imagine there would be some oil that stays with the crank..

stelio, do you know where that plug is?

 

[WIGGLE2]

IF you're even thinking about using that for a temp sensor port....forget about it. There isn't enough oil there consistently to provide an even halfway accurate reading.

 

[user_deleted]

lunatic, I have read up on them before, it just makes me wonder why their wouldn't be some type of drain on it, I understand that very little oil stays in the area of the crank but I'd imagine there would be some oil that stays with the crank..

stelio, do you know where that plug is?

let's back up a minute here so you don't start removing blind plugs from either your engine case an/or cam cover. your first question is draining a dry-sump motor. completely unnecessary. therefore a cycle engine manufacturer would not and does not go to the expense and effort to machine a threaded hole, sealing surface, and drain plug in an application not requiring same. secondly you keep asking about a large hex-drive threaded plug on the right side of your motor......08 and later motors....etc. this is NOT a drain. it is the threaded cover containing the spring/ring/valve inside the motor....otherwise known as a by-pass valve.

 

[WIGGLE2]

John. Absolutely correct on the engine drain issue.....NOT necessary. He is looking for a port to install his temp sender for oil temp gauge I believe. Someone told him about another port besides the one he posted up a pic on, but when the engine is running, there won't be enough oil there at that one to give his sender any kind of a solid signal. IF he's that set on an oil temp gauge, I'd either put it in where the drain plug on the swingarm is, or get creative and set up in the mill and fab a small aluminum block up. Cut the return line to the swingarm, shorten as required to fit the block, and put AN ends on them. Run the oil thru the block, and intercept a temp reading from the side of the block. Without having my bike in front of me, I don't know how much room there is to do this. But...I had to do this on a race application one time. We tapped into the one supply line to the dry sump pump though. Seems to me like on this it's more of PIA vs. gain, but....whatever. I actually believe there is an AN fitting by Aeroquip that gives you an 1/8" NPT female port that would probably work without using a block. Cut a line, shorten, install AN ends, and put this in there.

 

[fox8701]

okay, well thank you for that. Cause I didn't know of any of that, which is what I've been trying to find out! Lol anywho I guess I'll use the drain plug on the Swingarm.. I'll have to find out the size of that? Also, where is the engine plug that the starter of this forum post is talking about...?

 

[WIGGLE2]

http://www.jegs.com/images/photos/500/555/555-100532.jpg

 

[sparky300]

The thread didn´t helped regarding the oil drain plug. I now just order a sensor and a direct adapter in M16x1,5.
Hopefully one of both fits without problems. I just measured my oil drain plug and it seems to be a M16. Let´s see.

AFAIK there are no metric threads, fasteners or otherwise, on any of the XB's. They're all SAE

1125's (i.e. the Rotax engine) may be an exception but IDK, I don't own one

 

[fox8701]

Wiggle, what would that be used in conjunction with as in which line/where, sized to for what?

 

[WIGGLE2]

It would take some modification to your line either TO the engine or FROM the engine. One will show cooler, (The one TO the engine), but I THINK it would be more consistent. You would have to cut and shorten your line as required to allow the length of the fitting and hose ends required to fit into the same space. You would need to have the matching ends put onto your lines which are also available from Jegs or other race shops. Then your lines screw fast to that blue adapter fitting I posted. Those fittings have an 1/8" NPT female hole. Get the appropriate adapter for your gauge for use with an 1/8" NPT hole, and you would be good to go. I think if there's enough room under there, (and I THINK there is....I am not near my bike to look), you will be good to go! Any guy who has experience in fabbing Areoquip hoses and lines could help you! (Many drag racers and circle track guys run Aeroquip).

 

[nicholas900]

Why not just use a 1/2"-20 male to 1/8" female npt adapter instead of the oil drain plug?

In the end IMO oil temp in an air/oil cooled motor will drive you nuts.

 

[WIGGLE2]

Its just a pain dealing with it every oil change. And like I said earlier....its seems like a PIA vs. Gain. But.....whatever. I had cosidered it, thought about it, then talked some people. I don't know WHAT you'd have to do to one of these with a properly functioning system to get the oil temp into a dangerous 'engine life threatening' temp zone.