Pressure Test
- Thread starter ski4
- Start date
Proformance1
Liquid Insanity
- Location
- New York Crew
Agreed, but i dont know how much, has anyone put a digital or analog pressure gauge on the cases and looked at a high reading?
swapmeet
Brotastic
- Location
- Arlington TX
I put a gauge on the carb hole last night, got it up to 10psi with no leaks. Gonna run the gauge inline with my pump tonight and plug the carb port.
swapmeet
Brotastic
- Location
- Arlington TX
Ok, I ran a more accurate gauge inline with my pump. Blocked off everything as discussed before, I removed the aftermarket cap on the flywheel (vs. removing the entire flywheel).
Pumped up to 10psi on the pulse port, no pressure loss at all over 15min. So does this mean I have no leaks?
Pumped up to 10psi on the pulse port, no pressure loss at all over 15min. So does this mean I have no leaks?
DAG
Yes, my balls tickled from that landing
- Location
- Charlotte, NC
Yes it will work, but will take forever. Go get a large mountainbike tire and cut out the valve steam and attached to 1/4 fule line and the pulse line. Now you have a way to attach a larger pump. You now filet the tire cut to lenght and use as a rubber gasket. Just cut bolts hole anout mount the ruber between exhause mani and cylinder and between intake mani and carbs. Rock Solid.
Bought two 1 1/2 test plugs for the intake mani and a 2 inch for the exhaust mani from lowes. I took the dremel to the bottom base on the plug for the exhaust mani, about 1mm all around without touching the rubber expanding part. And a $10 foot pedal pump at walmart and a tire tube. Cut the valve out of the tire tube and wedged it into the pulse line and pumped to 10psi.
Attachments
Proformance1
Liquid Insanity
- Location
- New York Crew
IMO, you can damage the reeds doing this so i recomend against, especially at 10 psi. if your reeds leak its fine, if not...
Yeah sorry I feel the same way. I forgot to add that I removed my reeds
Proformance1
Liquid Insanity
- Location
- New York Crew
:biggrin:
DAG
Yes, my balls tickled from that landing
- Location
- Charlotte, NC
tooth pick in each reed set to slightly open them up. You dont want to take those reed screws out to many times considering they tap into plastic. Loctite does not work properly unless there is pressure between internal and external threads...
- Location
- Missouri
How many minutes must the pressure hold at 7-8 psi before you can rule out a pressure leak?
5, 10, 15, etc.
5, 10, 15, etc.
- Location
- Windsor ON
Thread revival because I used the search function!
At the start of the thread I see it suggested to pump air into one pulse fitting and measure case pressure via the second - maybe I’m crazy here but I was under the impression each side of the case should be sealed off from the other???
At the start of the thread I see it suggested to pump air into one pulse fitting and measure case pressure via the second - maybe I’m crazy here but I was under the impression each side of the case should be sealed off from the other???
- Location
- Windsor ON
Thanks for the clarification - I actually used some vapor barrier plastic sheeting sandwiched between the exhaust ports and the exhaust manifold (to prevent communication) and the same sandwiched between the carbs and the intake manifold. This worked well and was very simple but I was surprised to hear and feel air escaping from the other pulse fitting, sounds like it’s normal.
- Location
- California
@Big Kahuna I don't think this thread is supposed to be in the Riding section?