 What does this leak sound like (video) |
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| VaccaRabite |
 May 24 2008, 08:49 PM
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En Garde!  Group: Admin Posts: 13,456 Joined: 15-December 03 From: Dallastown, PA Member No.: 1,435 Region Association: MidAtlantic Region  |
Okay, a while back I had the #2 exhaust rocker back off while breaking in the engine.
I fixed that, and rebuilt the carbs. Tonight I reset the valve gap and, ran it for the first time. It runs, but I heard a noise I did not like. There is a leak somewhere on the 1/2 head bank. Watch this video I made. it is me cranking the engine on my test stand. No fuel or spark, only cranking. The spark plugs are in to force compression. You can hear a "fffffffft, fffffffft, ffffffffft" sound, that I don't think is supposed to be there. Link to the video on Flickr Zach |
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| VaccaRabite |
May 25 2008, 05:25 PM
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En Garde! Group: Admin Posts: 13,456 Joined: 15-December 03 From: Dallastown, PA Member No.: 1,435 Region Association: MidAtlantic Region |
Vid of the first few moments of break in...
There. The smoke when away somewhere around 10 minutes in. How does it sound? Other vid or on my build thread What the World needs now.... Let me know how it sounds. Zach |
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| bottomend |
May 25 2008, 10:38 PM
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Member Group: Members Posts: 180 Joined: 27-August 05 From: LA,Ca Member No.: 4,683 |
QUOTE(Vacca Rabite @ May 25 2008, 04:25 PM)  Vid of the first few moments of break in... There. The smoke when away somewhere around 10 minutes in. How does it sound? Other vid or on my build thread What the World needs now.... Let me know how it sounds. Zach Unrelated but... running your engine for the first time at 2000-2500 does not break the rings in. Thats the cam break in time only. Rings are broken in after the engine is installed and load is applied during acceleration/deceleration. The engine sounds pretty good as is. Are you trying to pinpoint the higher pitched you're hearing? Anything super out of the ordinary should be pretty evident, otherwise just go through everything again and make sure stuff is tightened down to spec. At this point, if nothing is clanking and trying to destroy itself, then theres not a whole lot it could be. Just check all the normal stuff i.e. valve adjstment, intakes, exhaust, spinning things rubbing against stuff ect. |
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Posts in this topic
Vacca Rabite What does this leak sound like (video) May 24 2008, 08:49 PM
Vacca Rabite Also, and I am frusterated by this, but I am going... May 24 2008, 09:01 PM Vacca Rabite Bump to the top.
Zach May 25 2008, 05:47 AM vsg914 Zach, its hard to tell in the vid as sound quality... May 25 2008, 07:16 AM toon1 I can sorta hear what you are talking about, hard ... May 25 2008, 08:52 AM Vacca Rabite Yeah. I fired it. It runs on all 4. Each carb i... May 25 2008, 09:00 AM toon1 An EX leak would have to be pretty large to be abl... May 25 2008, 09:26 AM rhodyguy use a section of garden hose to pin point the nois... May 25 2008, 09:48 AM LowGT Maybe a silly question, but are the spark plugs to... May 25 2008, 05:08 PM purple why are you doing this with the tranny in gear? I ... May 28 2008, 04:08 PM
Vacca Rabite
why are you doing this with the tranny in gear? I... May 28 2008, 08:26 PM r_towle grab the ball and go forward and back with it...yo... May 28 2008, 09:04 PM Gint BTW - With the engine running the trans will turn ... May 28 2008, 10:42 PM Vacca Rabite
BTW - With the engine running the trans will turn... May 29 2008, 07:14 AM |
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