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Cloris
Newbie


Joined: 13 Jul 2016
Posts: 18



PostPosted: Thu Aug 04, 2016 2:19 am    Post subject: Rocker shaft alignment Reply with quote

Looking for a little help I have a couple rocker shafts that appear to have moved a bit.
To put them back in place do you just loosen the centre bolt tap them back in and torque to 20lbs. Just thought I would do this to address a rattling that sounds like a noisy rocker before I search any deeper.

Thanks 聲寶服務站 歌林服務站 聲寶歌林服務站
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DynoMike
Barcelona


Joined: 25 May 2012
Posts: 1257
Location: The Cotswolds

2003 Porsche 996 Turbo

PostPosted: Fri Aug 05, 2016 7:21 pm    Post subject: Reply with quote

MODS; Please put in the correct forum in the vain hope someone can help this chap out.

Many thanks, Mike.
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2003 996 Turbo
Previous toy 1974 Mini 1000
 
  
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T8
General
General


Joined: 29 Jun 2010
Posts: 12583
Location: Kent


PostPosted: Tue Aug 09, 2016 10:39 am    Post subject: Reply with quote

I think Cloris has a 1979 SC from his earlier posts so I've moved it to here.

Dont know
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Demort
Paul Ricard


Joined: 21 Mar 2015
Posts: 3115
Location: Sussex


PostPosted: Tue Aug 09, 2016 8:16 pm    Post subject: Reply with quote

Not sure but ive uploaded a manual that may help , air cooled is not my area of expertise im afraid ...


https://drive.google.com/open?id=0Bz-WSQUdRZyXdTJQbU9md3F4NUE


https://drive.google.com/open?id=0Bz-WSQUdRZyXLXA1RFR1dTRkWW8

Last edited by Demort on Tue Aug 09, 2016 8:24 pm; edited 1 time in total
 
  
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DynoMike
Barcelona


Joined: 25 May 2012
Posts: 1257
Location: The Cotswolds

2003 Porsche 996 Turbo

PostPosted: Tue Aug 09, 2016 8:21 pm    Post subject: Reply with quote

T8 wrote:
I think Cloris has a 1979 SC from his earlier posts so I've moved it to here.

Dont know



Initially it was in the 991 forum!! Cheers T8 Thumb
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2003 996 Turbo
Previous toy 1974 Mini 1000
 
  
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AVI_8
Trainee


Joined: 19 Jan 2014
Posts: 74
Location: Prestwick


PostPosted: Thu Aug 11, 2016 12:04 pm    Post subject: Re: Rocker shaft alignment Reply with quote

Cloris wrote:
Looking for a little help I have a couple rocker shafts that appear to have moved a bit.
To put them back in place do you just loosen the centre bolt tap them back in and torque to 20lbs. Just thought I would do this to address a rattling that sounds like a noisy rocker before I search any deeper.

Hi I believe the standard spec is 13 ft/lbs, though I've heard a lot of folk are going to 18 as this locks the shafts in a bit tighter.
Remember to centre the rocker shaft on the rocker arm and not the housing on the shaft, that's important.
Turbocraft in the US make a kit which properly locates the shafts though it costs around 365 dollars, you'll have to keep checking these once you've moved it back as they can have a tendency to slide especially if there's any wear on the shaft/cam housing. Hence the slightly higher torque people use to prevent them "walking"
A good sign that all's not well with regards to rocker shafts is an oil leak onto the heat exchanger, when the shaft moves it causes oil to migrate past the shaft into the "dry" part of the rocker covers.In my case also on my 964 I had an unusual tappet sound.




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