Posted: Thu Aug 04, 2016 1:19 am Post subject: Rocker shaft alignment
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 _________________ I come from Taiwan, I hope to meet some new friends here，but my English is not good歌林服務站聲寶服務站
DynoMike Barcelona
Joined: 25 May 2012 Posts: 1381 Location: The Cotswolds
MODS; Please put in the correct forum in the vain hope someone can help this chap out.
Many thanks, Mike. _________________ 2003 996 Turbo
Previous toy 1974 Mini 1000
T8 General
Joined: 29 Jun 2010 Posts: 13743 Location: Kent
Posted: Tue Aug 09, 2016 9:39 am Post subject:
I think Cloris has a 1979 SC from his earlier posts so I've moved it to here.
_________________ 2007 Guards Red 997 Turbo Tiptronic
ex 2004 Polar Silver 996T Tiptronic
ex 2002 Seal Grey 996.2 C4 Tiptronic
ex 1978 Silver 924 Manual
deMort Reims
Joined: 21 Mar 2015 Posts: 4316 Location: Brighton
Posted: Tue Aug 09, 2016 7:16 pm Post subject:
Not sure but ive uploaded a manual that may help , air cooled is not my area of expertise im afraid ...
I think Cloris has a 1979 SC from his earlier posts so I've moved it to here.
Initially it was in the 991 forum!! Cheers T8 _________________ 2003 996 Turbo
Previous toy 1974 Mini 1000
AVI_8 Trainee
Joined: 19 Jan 2014 Posts: 83 Location: Prestwick
Posted: Thu Aug 11, 2016 11:04 am Post subject: Re: Rocker shaft alignment
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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