 Money shift., Help me figure this out. |
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| ottox914 |
 Jun 4 2014, 10:09 PM
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The glory that once was.  Group: Members Posts: 1,302 Joined: 15-December 03 From: Mahtomedi, MN Member No.: 1,438 Region Association: Upper MidWest   |
A friend of mine, whom I would trust with my life or my wife, was taking the 914 for a little test beating with me the other day. At about 7k rpm and 15 psi he money shifted me from 3rd to 2nd. He WAS very quick to throw the clutch back in, but...
I now need a new fan belt, as the OEM one was thrown and is slightly mangled at present. More concerning, is the noise it makes now. It isn't the 1 in 4 cycle "thump, thump" of a rod bearing. I can pull plug wires and rev it up and the sound remains. Its more of a tic-tic-tic-tic-tic thing. Due to the speed of the tic tic tic and that it goes up and down with rpm, I'm thinking valves. Not that i really want to think that. Any other thoughts or trouble shooting to be tried that anyone else can think of? I'm thinking to start with compression test, move to leakdown, and submit some of the oil for testing of metallic ick. I can do the compression test and send in the oil, but I don't have the tools for the leakdow. |
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| r_towle |
Jun 4 2014, 11:17 PM
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Custom Member Group: Members Posts: 24,663 Joined: 9-January 03 From: Taxachusetts Member No.: 124 Region Association: North East States 
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QUOTE(ottox914 @ Jun 5 2014, 12:09 AM)  A friend of mine, whom I would trust with my life or my wife, was taking the 914 for a little test beating with me the other day. At about 7k rpm and 15 psi he money shifted me from 3rd to 2nd. He WAS very quick to throw the clutch back in, but... I now need a new fan belt, as the OEM one was thrown and is slightly mangled at present. More concerning, is the noise it makes now. It isn't the 1 in 4 cycle "thump, thump" of a rod bearing. I can pull plug wires and rev it up and the sound remains. Its more of a tic-tic-tic-tic-tic thing. Due to the speed of the tic tic tic and that it goes up and down with rpm, I'm thinking valves. Not that i really want to think that. Any other thoughts or trouble shooting to be tried that anyone else can think of? I'm thinking to start with compression test, move to leakdown, and submit some of the oil for testing of metallic ick. I can do the compression test and send in the oil, but I don't have the tools for the leakdow. Use a compression tester threaded hose hooked up to a 125 psi compressor in each cylinder. Listen with a hose to your ear and the intake, exhaust and oil filler holes for sound.....you can hear it right through a muffler pipe if it's leaking and you can hear well enough... |
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Posts in this topic
ottox914 Money shift. Jun 4 2014, 10:09 PM
Mike Bellis Never let anyone drive a turbo 914. :( Jun 4 2014, 10:16 PM rick 918-S Wow! Sorry to here. Maybe it dropped a seat. U... Jun 4 2014, 10:55 PM
ottox914
Wow! Sorry to here. Maybe it dropped a seat. ... Jun 5 2014, 06:47 AM '73-914kid
:stromberg:
I'm sorry to hear that someone ... Jun 4 2014, 11:14 PM messix bent valve Jun 4 2014, 11:14 PM ottox914
I can probably rig something up. I thought the ... Jun 5 2014, 06:41 AM 76-914
I can probably rig something up. I thought the... Jun 5 2014, 08:09 AM Jake Raby There's nothing good about "zinging... Jun 5 2014, 09:19 AM horizontally-opposed
If it was zinged at 7K that hard it HAS to come ... Sep 18 2014, 03:42 PM SirAndy Money shift
I added a constant reminder to my cu... Jun 5 2014, 11:38 AM Mike Bellis
Money shift
I added a constant reminder to my c... Jun 6 2014, 09:25 AM SirAndy I think you're missing a couple $$..... Jun 6 2014, 11:08 AM horizontally-opposed
I think you're missing a couple $$.... Sep 18 2014, 03:40 PM gms
Money shift
I added a constant reminder to my c... Sep 14 2014, 07:16 PM infraredcalvin My buddy has several race cars with a crude versio... Jun 5 2014, 08:16 PM ottox914 Going to check out the car tomorrow. Still don... Jun 7 2014, 02:33 PM messix for some reason I thought you had a six.... if it... Jun 7 2014, 03:14 PM '73-914kid Figure out which valves are loose by pulling the v... Jun 7 2014, 03:32 PM ottox914 Onward with the auto-topsy. Heads will be on the ... Sep 14 2014, 07:06 PM Cuda911 ^^^ Me too! Would love that tach face. Sep 14 2014, 10:25 PM ottox914 Heads are headed to the Head Master, Len. We... Sep 17 2014, 01:50 PM Jake Raby I expect you'll find that all the bearings are... Sep 18 2014, 01:34 PM |
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