I found a cool low psi gauge at a local welding shop for 11bucks,gout the brass fitting hook uo a hose for 7 bucks,and got 4 ft of about 3 bucks.
there was also a schrader valve and the t fitting i got for about 8 bucks so hopefully i can find a way to hook it up and fill my cases to check for leaks after my rebuild.
i cant find the right size freeze plug the cap off the exhaust and i need ideas for how you guys hooked up the pump and or what you used.
worst case senario im going to have to cut out a special block off plate that bolts up to the intake and exhaust.hopeing to find a cheap/easier way.
also ideas for a cheap/effective compression tester.ive read that the harbor freight stuff tend to be inaccurate,and cause the gauge hose is bigger on the harbor gauge its better suited for v8's and not small displacement motorcycle engines.
whats you opinion and experience with this?
i used a patch of rubber and screwed my pipe flange on to seal the exhaust.
you can pick up a valve stem at lowes to hook a basketball/foot pump too.
Got the rubber plugs from Mcmaster carr
http://www.mcmaster.com/#expansion-test-plugs/=jng2lsHole saw a metal or plastic plug at least 1/2" thick (my LT500 was 46mm or 1.812" 1- 13/16)")
Drill and tap Pipe Size 1/8", NPTF use a 1/8" fitting
Spark Plug Seals The Head
that is dont nicely,guess i need to look up mc mastercarr!!
any one have an idea what freeze plug may work for a lt 250??
Ok, so what exactly does the readings tell you? Ring issues, crank sealing issues?
Nice DIY tester Mitch!
Ok, so what exactly does the readings tell you? Ring issues, crank sealing issues?
Nice DIY tester Mitch!
On engines that have power valves, it usually tells you that you need to figure out a way to keep the power valve from leaking air into the crankcase so that you get an accurate pressure and or vacuum test.
Once you solve the power valve sealing issue, a pressure test will help indicate leaking gaskets, cracks in the cases or cylinder and if the pressure lips on the crank seals are leaking. IT WILL NOT REVEAL IF THE CRANK SEAL SUCTION LIP IS LEAKING. Crank seals have two lips. One lip holds pressure and the other suction. The suction lip is the most important lip and the lip that is most apt to leak causing a lean condition at partial throttle. A vacuum test is also necessary to accurately test for leaking crank seals.
Never seen the vacuum test procedure. I have a mighty vac, what's involved in the vacuum test?
Yeah Mitch I'll be doing that double oring trick for sure...
Great tip
double o-ring trick huh???
would you mind letting me in on this tidbit of info??
lol.... this is tough one to explain let me see if I can ........ put two little green orings on powervalve shaft ......... between the bearing and pv under the limit plate.
interesting,the green o-rings you are referring to are the ones commonly used in a/c systems?
ok i cant ever remember how much air and how long does it have to hold air for.
interesting,the green o-rings you are referring to are the ones commonly used in a/c systems?
Just OEM O-Rings, using 2 O-Rings is added insurance of not having any leaks around the power valve is all.
5lbs
and if you still have 5lbs after 10 mins you're good.
ok thanks, i just found it again
4lbs for 4 to 5 min, and you can lose 1/2lb in that time and it still ok.
does this sound right.
and who has the o-rings for sale. beside mmcar
Suzuki. I think I have some extras.
cool lmk Matt, and what do you have to do pull that bearing out of the power valve, is it behind it.
i just took mine apart and i didnt see it.
Did it come on on the valve? If not, should be easily visible
yeah i didnt see it, i really cant see it being behind that bearing tho
ok thanks, i just found it again
4lbs for 4 to 5 min, and you can lose 1/2lb in that time and it still ok.
does this sound right.
and who has the o-rings for sale. beside mmcar
Personally, i'd never run a bike that has any kind of an air leak.
Here is a pic with the 2 O Rings, almost room for a 3rd one
AWESOME!!! im still waiting on finances to get mine together -_-
thanks for the info!!! this
**** is priceless!!!errr well THIS
**** SAVES ME MONEY!! lol
JH, what Do you do to prevent the exhaust valve from leaking? Recommendations on how long a motor should hold air pressure?
Optimistic x 1
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