01-17-2010, 04:52 PM #1
Pressure Testing Evaluation (Pictures Attached)
I just built my pressure test kit yesterday and there are a few things I would like to go over.
1. Does my inlet barb fitting seem to be posititioned correctly? I used gasket material with plexi glass to seal the intake.
2. What do you use to plug the oil plug on the intake manifold?
3. Do I have to take off my exhaust manifold to seal up the ports or can I just seal the end of it?
4. What kind of pressure am I looking to go to? Is anything higher than 6lbs dangerous?
01-17-2010, 05:13 PM #2
You kinda went a different route...but it can work. What I would recommend is, take the pulse line coming from the case and make that your "filling" point of the air. Put your carb back on over the plexi glass "solid" piece with the gasket to keep that tight. Take a piece of paper and trace your exhaust side section and cut that with plexiglass also and then install that section of the exhuast to keep it sealed up.
Pressure....it should hold 10 psi for 10 minutes. I would not have got that large of a gauge because it's easier to see losses with a 0-20 lb gague...but yours will work also.
01-17-2010, 05:29 PM #3
01-25-2010, 07:59 PM #4
Yeah, I put the pressure line to the two pulse fittings with a tee in the middle. I jacked mine to 13 psi, and held it for 45 minutes. Wheeee!
01-25-2010, 10:19 PM #5
10 PSI is the max I will go on a motor, have to be careful not to blow a crank seal. I have a 0-15 psi gauge for motor testing. I use a 0-30, 0-60 and a 0-100 for carbs depending on which style I am testing.
01-26-2010, 12:49 AM #6
How about pulling 10psi vacuum instead of positive pressure?
01-26-2010, 03:07 AM #7
01-26-2010, 06:17 AM #8
01-26-2010, 11:10 AM #9
01-28-2010, 01:18 PM #10
I take rubber sheet and block off the intake by installing the manifold over the rubber sheet.I do the same on the exhaust side I sandwich the rubber between the manifold and the cases.
Then I take 2 of the pulse lines and connect them together.I take the 3rd pulse line and install a shreader valve in it to fill with air.
Using this method you can use your tire pressure gage and check pressure.
Or you can add a gauge on the pulse line your filling it with or in line on the 2 pulse line's you joined together.
I have a shreader valve thats turned down to fit in the pulse line .
Users Browsing this Thread
There are currently 1 users browsing this thread. (0 members and 1 guests)
By allcool in forum Yamaha How To & FAQsReplies: 14Last Post: 01-02-2013, 06:08 PM
By james k in forum Yamaha PWC Performance (2-stroke)Replies: 0Last Post: 12-21-2007, 08:18 PM
By Vern in forum 4-Tec PerformanceReplies: 6Last Post: 10-31-2007, 10:46 PM
By salty in forum Yamaha PWC Performance (2-stroke)Replies: 5Last Post: 06-13-2007, 04:30 PM
By MikeB in forum Sea Doo Open DiscussionReplies: 7Last Post: 02-16-2007, 11:31 PM