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| Leak down test results http://mudmotortalk.com/mmt_v2/viewtopic.php?f=3&t=68679 |
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| Author: | tyler_johnson [ Tue Oct 18, 2016 7:54 pm ] |
| Post subject: | Leak down test results |
so after getting my OTC tester in today, I could wait. followed directions and the eneed up with the following: Cylinder 1: 17% Cylinder 2: 5% With Cylinder 1 the leak are equal parts through intake and exhaust. With cylinder 2, I'm pretty sure all 5% is exhaust valve. Any solid opinions on leave alone or not is appreciated. Sent from my SM-G900V using Tapatalk |
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| Author: | cupped up [ Tue Oct 18, 2016 8:24 pm ] |
| Post subject: | Re: Leak down test results |
Performance tailing off some? |
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| Author: | tyler_johnson [ Tue Oct 18, 2016 8:32 pm ] |
| Post subject: | Re: Leak down test results |
not bad just wanted to see, give some sorta baseline, I have lost about 2-3 mph overall just by myself, with a load only a tad longer holeshot. Sent from my SM-G900V using Tapatalk |
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| Author: | cupped up [ Tue Oct 18, 2016 8:42 pm ] |
| Post subject: | Re: Leak down test results |
You can yank the heads off and have a valve job done, just remember that eventually they will start to leak again. So in my opinion it's a "bang for your buck" thing...once you're dissatisfied with performance have them taken care of. Unless it starts to show symptoms of other problems too. |
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| Author: | tyler_johnson [ Tue Oct 18, 2016 8:45 pm ] |
| Post subject: | Re: Leak down test results |
well a few mph in the 2.5 yrs after pulling it out of Daniels yard in Prairieville, I'm still happy, just wanted to know where it's at Sent from my SM-G900V using Tapatalk |
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| Author: | Muddslanger [ Tue Oct 18, 2016 9:10 pm ] |
| Post subject: | Re: Leak down test results |
I had to order one as well, should arrive tomorrow. I've never used one, I figured it should be pretty easy to use Sent from my iPhone using Tapatalk |
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| Author: | tyler_johnson [ Tue Oct 18, 2016 9:12 pm ] |
| Post subject: | Re: Leak down test results |
that hardest part with the motor completely together is getting the piston TDC Sent from my SM-G900V using Tapatalk |
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| Author: | Muddslanger [ Tue Oct 18, 2016 9:14 pm ] |
| Post subject: | Re: Leak down test results |
Did the piston try to stroke when you applied the pressure? Sent from my iPhone using Tapatalk |
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| Author: | tyler_johnson [ Tue Oct 18, 2016 9:24 pm ] |
| Post subject: | Re: Leak down test results |
yup lol Sent from my SM-G900V using Tapatalk |
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| Author: | Will C [ Tue Oct 18, 2016 10:03 pm ] |
| Post subject: | Re: Leak down test results |
I think yours might be reading a bit low. When I get a a tight bb Briggs .with no air leaking from valves I'm still in the 10-14 range. If I can hear a little air from valves it's usually north of 20%. My tester is snap on and I know that doesn't mean shit. This one has earned my trust. Maybe someone else will say what there getting |
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| Author: | Muddslanger [ Wed Oct 19, 2016 11:41 am ] |
| Post subject: | Re: Leak down test results |
Hey Tyler, probably a stupid question but when you did the test did you just take valve covers off? Sent from my iPhone using Tapatalk |
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| Author: | Muddslanger [ Wed Oct 19, 2016 11:46 am ] |
| Post subject: | Re: Leak down test results |
Or do you just listen through the exhaust carb and case? Sent from my iPhone using Tapatalk |
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| Author: | tyler_johnson [ Wed Oct 19, 2016 12:31 pm ] |
| Post subject: | Re: Leak down test results |
I left them on Sent from my SM-G900V using Tapatalk |
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| Author: | Will [ Thu Oct 20, 2016 5:21 am ] |
| Post subject: | Re: Leak down test results |
What condition is your prop in? Doesn't take much wear on the tips to loose a couple mph on top. |
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