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This post was updated on .
So, I've heard leakdown testers are easy to make. I am in need of one, and feel that I'd rather have one made by someone that knows how rather than doing it myself. I am also a little short on time and want to spend it on the bike as opposed to making tools.
I already have a compressor, it is a very small one, and couldn't be used to run an impact drill but I believe it will be sufficient for a leakdown test (I need to get a better one I can, I've been meaning to do that anyways).
Buying these tools new costs $140 or more (at least ones that I can get shipped to Canada or pick up locally).
I imagine someone here could make me one and ship it to me for MUCH less than that.
Any takers?
1981 CB750K with 900 cams
90K KM's, rebuilt head, rebuilt carbs, upgraded valve stem seals
My wife's recipe website that I'm trying to help promote: Strawberries for supper. Yes, I am a lucky man.
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Administrator
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If I have a spark plug that'll fit your head I'm game. What plug do you run?
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This post was updated on .
I believe the ngk d8ea is the factory spec. I run the iridiums but don't think that is relevant. Pretty sure they're the same as the sohc's.
Edit: Confirmed - its the d8ea (dr8eix iridium)
I believe that the following is correct as well
Thread diameter - 12mm (5/8)
Thread reach - 19mm
1981 CB750K with 900 cams
90K KM's, rebuilt head, rebuilt carbs, upgraded valve stem seals
My wife's recipe website that I'm trying to help promote: Strawberries for supper. Yes, I am a lucky man.
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You could probly buy some kind of adaptor that fits the cyl. head at a auto parts store.Just attach your air line to it.
You will also need a regulator on your compressor.
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I know you said you don't want to spend your time making one, but it's not difficult. You can have one in the amount of time it'd take to wait for one to arrive in the mail. But, if you're set on buying one, this is more for future folks who are searching old threads. :)
These instructions are from the XS11 site. I made one in an afternoon and most of it was going to different stores to get the parts. http://www.xs11.com/forum/showthread.php?t=190
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That's part of my main issue. I don't have an afternoon to go to different stores to get parts.
The time that I can spend working on my bike is usually after 9pm when most stores are closed. I mail order parts as much as possible. If I need to pick up common tools I can just drop in somewhere quick (e.g. if I need a drill press).
Right now I have more money than time, but I just don't feel that spending $140+ on something someone here can make for much cheaper and mail to me. I figure this way it works out better for both of us, I get what I need and Shiney makes a little money  .
1981 CB750K with 900 cams
90K KM's, rebuilt head, rebuilt carbs, upgraded valve stem seals
My wife's recipe website that I'm trying to help promote: Strawberries for supper. Yes, I am a lucky man.
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Administrator
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OK. I have a d8ea so all good there. What do you want on the other end?
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According to the site posted by bosco it looks like it needs a 1/4 - 1/8 inch reducer, then a grease gun hose, then a 1/4 - 1/8 inch reducer and a quick disconnect.
From the site it also says that I'll need a pressure gauge/pressure regulator assembly as well, as the regulator that on my compressor is "the wrong kind" (I don't really know what that means).
Maybe TOOLS, bosco or someone else can chime that has made one in the past?
1981 CB750K with 900 cams
90K KM's, rebuilt head, rebuilt carbs, upgraded valve stem seals
My wife's recipe website that I'm trying to help promote: Strawberries for supper. Yes, I am a lucky man.
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Administrator
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Making a leakdown with a gauge is one thing. What we used to do on the race cars is just apply air and listen for .
Side note. Do you have Harbor Freight in your area? Item #95187- universal comp gauge set-includes a M12 hose in the kit and is $25. Also, item number 66216-$20- a little more basic of a kit. Not sure it has the proper size adapters. 'Bout to open 'er up...
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If a gauge isn't required then I don't need one. I'm not a race mechanic :-). No harbour freight in my area :-(. I'm in Canada. Harbour freight doesn't even ship up here. Sent from my BlackBerry device on the Rogers Wireless Network
Date: Wed, 12 Dec 2012 10:44:04 -0800 (PST) Subject: Re: WTB: homemade leakdown tester
Making a leakdown with a gauge is one thing. What we used to do on the race cars is just apply air and listen for .
Side note. Do you have Harbor Freight in your area? Item #95187- universal comp gauge set-includes a M12 hose in the kit and is $25. Also, item number 66216-$20- a little more basic of a kit. Not sure it has the proper size adapters. 'Bout to open 'er up...
Montvale,Virginia
Piute said it best: "wheres my 10mm?"
Hellbilly-"that is a great way to tell if you have come to your senses, when you start drilling random holes in things... "
LukeM-"Scooters rock, especially when they're in posse formation. "
Those who are too smart to engage in politics are punished by being governed by those who are dumber. ~Plato
History teaches us that men and nations behave wisely once they have exhausted all other alternatives. ~ Abba Eban
1981 CB750K with 900 cams
90K KM's, rebuilt head, rebuilt carbs, upgraded valve stem seals
My wife's recipe website that I'm trying to help promote: Strawberries for supper. Yes, I am a lucky man.
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Administrator
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Do you have a Harbor Freight in your area?
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Unfortunately there isn't a harbour freight in Canada, and they don't ship up here.
For some reason I have deja vue.... 
1981 CB750K with 900 cams
90K KM's, rebuilt head, rebuilt carbs, upgraded valve stem seals
My wife's recipe website that I'm trying to help promote: Strawberries for supper. Yes, I am a lucky man.
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Administrator
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Sorry. My phone is going bat shit crazy right now. Tappatalk???
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Administrator
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Oh cool. So you already have a means to connect a hose to your spark plug hole. So you're good on adapters. All you need is the leakdown head for your kit to convert it. The hose end on your kit is not a standard 1/4"" air hose quick connect fitting - they never are :(. If you can adapt from your current hose your golden. The leakdown heads (my name for them -don't Google that) would be super expensive to construct vs buying a massproduced unit.
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Is a "leakdown head" needed if I just want to push compressed air in and listen?
If all I want to do is that, then shouldn't a sparkplug attached to a hose attached to a standard quick connect give me what I need?
I'm assuming that if I need to get a leakdown head, then I'm looking at a whole tool, which will run me $140.
1981 CB750K with 900 cams
90K KM's, rebuilt head, rebuilt carbs, upgraded valve stem seals
My wife's recipe website that I'm trying to help promote: Strawberries for supper. Yes, I am a lucky man.
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Administrator
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Exactly. Screw the hose in the head and apply air pressure. That's all you need dude.
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Cool, so are you able to make that and mail it to me? I'm very happy to pay you for your time  .
1981 CB750K with 900 cams
90K KM's, rebuilt head, rebuilt carbs, upgraded valve stem seals
My wife's recipe website that I'm trying to help promote: Strawberries for supper. Yes, I am a lucky man.
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Administrator
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This post was updated on .
Your compression tester already had the plug hole adapter. Your tester hose end just wont fit your air compressor line,right?Actually,you can't use your existing hose at all-the check valve in it wont allow for air to enter from that direction.Nevermind  Unless it has a removeable Shcrader valve.
I imagine the plug adapter in your kit uses 14mm thread(on the female side). Super common in autos. I'd try Advance,Autozone or O'riellys and see if they have a hose. Chances are a standard auto hose will be 14mm ( will thread into your adapter) and will fit a standard 1/4 air compressor quick connect fitting.
I may have enough spare parts in the barn.I'm going to go check right now....Dude,why you gotta be so far away? It complicates things  stumbled across this: http://www.650motorcycles.com/LeakDownTester.html
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