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flosho
Joined: 01 Jul 2004
Posts: 3160
Location: Eau Claire, Wisconsin
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 Posted: Tue Mar 23, 2010 5:09 am Post subject: A noisy tappet is a happy tappet |
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But how much noise is too much noise?
*will upload video soon*
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Rasta Monsta
Joined: 12 Jul 2006
Posts: 11733
Location: PacNW
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| Posted: Tue Mar 23, 2010 7:54 am Post subject: |
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When one or two sound happier than the others.
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Toofah King Bad
- WeiBe (1987 924S 2.5t) - 931 S3
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flosho
Joined: 01 Jul 2004
Posts: 3160
Location: Eau Claire, Wisconsin
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| Posted: Tue Mar 23, 2010 8:25 am Post subject: |
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Hmm.. mech steth the beth meth for that? 
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Min
Joined: 04 Nov 2002
Posts: 2368
Location: Vernon, British Columbia, Canada
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| Posted: Wed Mar 24, 2010 11:27 pm Post subject: |
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If you think they are getting noisier.... open the cover and check them, I didn't and I mushroomed one/seized my motor.
Min
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Custom means it didn't come from a box.
1980 n/a with EDIS and Megasquirt II Injection. 7 different colors and counting. |
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ic932
Joined: 11 Feb 2005
Posts: 1104
Location: UK
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| Posted: Mon Mar 29, 2010 8:28 am Post subject: |
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| I've got a same situation but worse lol. Never had a 931 with a bad lifter so... been reading about 928 lifters (944). Never took any interest into how they actually function... I presume they have the same/similar concept? Nobody wants to remove the cam...or cams. Any update? |
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ideola
Joined: 01 Oct 2004
Posts: 15550
Location: Spring Lake MI
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| Posted: Mon Mar 29, 2010 8:43 am Post subject: |
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944/928 lifters are not nearly the same as 924 lifters.
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erstwhile owner of just about every 924 variant ever made |
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ic932
Joined: 11 Feb 2005
Posts: 1104
Location: UK
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| Posted: Mon Mar 29, 2010 8:50 am Post subject: |
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| OK, what mechanism (if any) do 924 lifters use? Is entirely hydraulic? |
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ideola
Joined: 01 Oct 2004
Posts: 15550
Location: Spring Lake MI
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| Posted: Mon Mar 29, 2010 10:14 am Post subject: |
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924 lifters are purely mechanical, the tip of the valve stem makes direct mechanical contact with the lifter adjust screw, which is used to adjust the clearance.
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erstwhile owner of just about every 924 variant ever made |
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ic932
Joined: 11 Feb 2005
Posts: 1104
Location: UK
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| Posted: Mon Mar 29, 2010 2:39 pm Post subject: |
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Of course they are 
Who can forget those grub screws?
I've got hyraulic lifter woes on my brain, excuse my stupidity. |
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Rasta Monsta
Joined: 12 Jul 2006
Posts: 11733
Location: PacNW
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| Posted: Mon Mar 29, 2010 3:11 pm Post subject: |
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| ic932 wrote: | | Is entirely hydraulic? |
Why not pop off your valve cover and take a look? Roll up the sleeves, get your hands dirty, and report back? Better than sponging others' R&D!
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Toofah King Bad
- WeiBe (1987 924S 2.5t) - 931 S3
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ic932
Joined: 11 Feb 2005
Posts: 1104
Location: UK
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| Posted: Tue Mar 30, 2010 6:24 am Post subject: |
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| Rasta Monsta wrote: | | ic932 wrote: | | Is entirely hydraulic? |
Why not pop off your valve cover and take a look? Roll up the sleeves, get your hands dirty, and report back? Better than sponging others' R&D!
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Hehehe...Ok Rasta I derserved that. 
Besides, my my tappet issue(s) are for hyraulic lifters and thier relationship to oil supply/pressure. OT so no need to report back here. |
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