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post #1 of 16 (permalink) Old 12-21-2011, 03:01 PM Thread Starter
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how to remove exhaust manifold

Hello to you all.I have a silver shadow 2 1978 the exhaust gaskets need replacing on the drivers side.
My mechanic wont do the job as he says he needs a gas botle to heat up the bolts and too many things can go wrong he did start but soon gave up when he discovered he did not have any imperial spanners?

So im here for some advice as i plan to do it my self.

Are there any tips or guides anyone can tell me regarding the removal
also does anyone know what size are the bolts .

Thanks Alec
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post #2 of 16 (permalink) Old 12-21-2011, 06:08 PM
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Service manual

The service manual might help in this case. Relevant parts downloadable in pdf format here:


http://rrtechnical.info/SY/TSD4200/q/q1.pdf

http://rrtechnical.info/SY/TSD4200/q/q2.pdf

RR Silver Shadow SRH40222
Sydney, Australia
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post #3 of 16 (permalink) Old 12-24-2011, 10:46 AM Thread Starter
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how to remove exhaust manifold shadow 2

Thankyou very much for the pdf ,already have need info best way to remove exhaust manifold bolts .As they have been on for a long time told that they can break if not carefull also .Told that these are 5/16 unf but have tried nearest that fits is a 12mm 6 sided spanner .Is this correct

Thanks Alec
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post #4 of 16 (permalink) Old 12-24-2011, 03:49 PM
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Re: how to remove exhaust manifold shadow 2

Quote:
Originally Posted by Alexander Hoar
Thankyou very much for the pdf ,already have need info best way to remove exhaust manifold bolts .As they have been on for a long time told that they can break if not carefull also .Told that these are 5/16 unf but have tried nearest that fits is a 12mm 6 sided spanner .Is this correct

Thanks Alec
Need to use a 1/2 inch AF 6 sided spanner or the other way is to use a 1/2inch AF 6 sided 1/4 drive socket with an adapter upto 3/8 drive and then a long 3/8 drive ratchet with a nuckle joint in it. the bolts will generally come out, unusual for them to break off. If the head of bolt starts to round off then 12mm could be used but would need hammering on.
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post #5 of 16 (permalink) Old 12-24-2011, 04:55 PM
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Manifold.

Use crawling oil (this is the exact translation of the Dutch word "kruipolie") and the wright size of tool. If it is 5/16 than use 5/16. Make room to work and when you're working there i would change the cover gasket and the spark plugs as well.

I dont understand why you would burn the bolts off when you haven't tried this first. There should be no problem .


Could it be a little more perhaps......no, it MUST be more!
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post #6 of 16 (permalink) Old 12-28-2011, 07:41 AM Thread Starter
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how to remove exhaust manifold

Thanks for all the replies

I have some gt 80 penetrating oil .The main problem has been trying to identify the bolts size .I will try what you say rollmech.
The problem has been the spanner size I have been told to use dosnt fit the bolts ,they dont look rounded
Thanks Alec
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post #7 of 16 (permalink) Old 12-28-2011, 03:02 PM Thread Starter
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How to remove exhaust gasket from manifold

Thanks hemmo I do not want to burn them off .I have been
Told by my mechanic that they will need heating up with a gas bottle.But
I have since been told not to try this as it can cause more damage
With regards to using 5/16 spanner or 1/2 inch as said before they do not fit ,which has been the problem from the start

Thanks Alec
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post #8 of 16 (permalink) Old 12-29-2011, 04:28 AM
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Manifold.

Hello Alexander,

i hope for you it is the right side of the engine . Seems more space there...

I just tried and 1/2 inch comes on easy, can work, but i would try 7/16 first. If this fits the bolts must come out with plenty of penetrating oil on cold engine .

Good luck.


Could it be a little more perhaps......no, it MUST be more!
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post #9 of 16 (permalink) Old 12-29-2011, 07:15 PM
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Re: Manifold.

Quote:
Originally Posted by Hemmo
Hello Alexander,

i hope for you it is the right side of the engine . Seems more space there...

I just tried and 1/2 inch comes on easy, can work, but i would try 7/16 first. If this fits the bolts must come out with plenty of penetrating oil on cold engine .

Good luck.

What happens is that over time the corrosion that is qbviously causes them to become to loose a fit for a 1/2 inch AF spanner so that is why suggest using a 12mm if this is the case. You will need to use a 6 sided and hammer it on, It will be a tight fit but should ensure you can undo the bolts without rounding them. Wouldn't advise heating them up, have not had to ever remove them by heating in 20 years as a RR mechanic
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post #10 of 16 (permalink) Old 01-01-2012, 07:55 AM Thread Starter
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how to remove manifold gasket

Thankyou Rollmech

Im removing the drivers side manifold .

Can you tell me , if i need to remove the steering rack to gain access to the bottom left bolt ,before I start this job it would be nice to know what im in for .

Just bought some 6 sided AF spanners ,which was a hunt itself

Thanks and Happy New Year

Alec
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