[ROVERNET - UK] Clickety Clat

[Steve Lawrence]

I will do a thorough check next week some time using all this input.  I have
done this job many times with no problem.  One suspect difference between
this motor and all the others is that the pistons do not seem to be Rover
pistons.  They have combustion chambers in the crowns, but very shallow
ones.  They are 90mm in dia. (standard Rover pistons are 85mm or so).  These
pistons do not have the recess at "noon and 6 o'clock" (so to speak).  I
would imagine if the pistons are even lightly touching the valves, there
would be immediate valve stem damage.  This engine was in a parts car I
purchased.  There was a bill for over $4,000.00 for an engine rebuild.  The
car does have good power, just need to figure out the valve ticking.
Ron, I checked the upper tensioner today as I thought of that as well.  It 
was properly released, so I can rule that out!
Thank you for all you help.

Steve Lawrence


----- Original Message ----- 
From: <rogerdm at iprimus.com.au>
To: <rovernet at lyris.ccdata.com>
Sent: Sunday, March 27, 2005 8:07 PM
Subject: RE: [ROVERNET - UK] Clickety Clat


> Another conundrum. I had a TC with valve clearences more than 2 thou and
> it didn't make any noise. I think you would be doing well to get a 
> combination
> of shims through the engine at less than 2 thou and I think the manual 
> specifies
> a tolerance greater than that. I feel you might be doing damage driving
> with an unusual noise as it does sound like a lubrication problem. Did you
> put the buckets back in the same place when you re assembled the head?
> Are they worn? Are the valve guides OK? Did you put new "O" rings in the
> guides? Have you ajusted the cam chain corretly when you re fitted the
> head? Presumably you had the head planed which means that the head bolts
> have to progress further down the threads of the block. If you didn't 
> remove
> gunk in the threads with a tap then the bolts may come up to the 
> obstruction
> and may reach torque without properly tightening the head and in turn the
> cam assembly. It may be fractionally loose which may disturb lubrication,
> clearences and alignment. It may not be noticeable with the engine stopped
> so try runing the engine at idle with the cover removed (briefly) to check
> lubrication and perhaps the origin of the noise. Use a long screwdiver
> like a stethescope by pressing the blade end on various suspect places 
> (like
> the cam bearings) and the handle against your ear. You might be able to
> locate where the noise is originating from (loudest) Do not change ends
> of the screwdriver as injury may result.
>
> Let us know how you went
> cheers roger
>
>>-- Original Message --
>>From: "Nottingham Road Giftware" <sales at nottinghamroad.com>
>>To: <rovernet at lyris.ccdata.com>
>>Date: Sun, 27 Mar 2005 02:02:29 -0800
>>Subject: [ROVERNET - UK] Clickety Clat
>>Reply-To: rovernet at lyris.ccdata.com
>>
>>
>>Hello All.
>>
>>I just replaced the head on my TC -- Ground valves/new seats etc. and 
>>there
>>
>>is too much valve clatter.  The tappet clearances are very close to spec,
>>
>>with most right-on (within .002 off-spec worst case).  Valve springs are
>>
>>good. Oil ways are clear to all cam bearings etc. The car runs great, but
>>
>>the noise is getting on my nerves.  I have had valve clearances way off
> in
>>
>>the past and they did not make much noise.  It does not seem like one 
>>valve,
>>
>>but it is equal amongst all of them.  Anybody have the same problem? 
>>Should
>>
>>I ignore it and keep on motoring?
>>
>>Steve Lawrence
>>
>>
>>_______________________________________________
>>rovernet mailing list
>>rovernet at lyris.ccdata.com
>>To unsubscribe, go to this web page, look near the bottom and follow 
>>instructions:
>>http://mailman.nipltd.com/mailman/listinfo/rovernet
>
>
> _______________________________________________
> rovernet mailing list
> rovernet at lyris.ccdata.com
> To unsubscribe, go to this web page, look near the bottom and follow 
> instructions:
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>

----- Original Message ----- 
From: "Ron Morey" <morey814 at hotmail.com>
To: <rovernet at lyris.ccdata.com>
Sent: Monday, March 28, 2005 7:33 PM
Subject: RE: [ROVERNET - UK] Clickety Clat


> Hello again. One thing I neglected to mention previously was the top chain 
> tensioner. It is easy to forget. It has to be retracted to remove the 
> chain. If this wasn't done then the tensioner head falls out of the 
> retainer and could make a lot of noise. The second part to this is that if 
> the tensioner was properly retracted then it must be released again after 
> the chain is connected. Not meaning to be insulting, it's one of those 
> things that is easy to overlook.
> All the best, Ron.
>
>>From: rogerdm at iprimus.com.au
>>Reply-To: rovernet at lyris.ccdata.com
>>To: rovernet at lyris.ccdata.com
>>Subject: RE: [ROVERNET - UK] Clickety Clat
>>Date: Mon, 28 Mar 2005 14:07:51 +1000
>>
>>Another conundrum. I had a TC with valve clearences more than 2 thou and
>>it didn't make any noise. I think you would be doing well to get a 
>>combination
>>of shims through the engine at less than 2 thou and I think the manual 
>>specifies
>>a tolerance greater than that. I feel you might be doing damage driving
>>with an unusual noise as it does sound like a lubrication problem. Did you
>>put the buckets back in the same place when you re assembled the head?
>>Are they worn? Are the valve guides OK? Did you put new "O" rings in the
>>guides? Have you ajusted the cam chain corretly when you re fitted the
>>head? Presumably you had the head planed which means that the head bolts
>>have to progress further down the threads of the block. If you didn't 
>>remove
>>gunk in the threads with a tap then the bolts may come up to the 
>>obstruction
>>and may reach torque without properly tightening the head and in turn the
>>cam assembly. It may be fractionally loose which may disturb lubrication,
>>clearences and alignment. It may not be noticeable with the engine stopped
>>so try runing the engine at idle with the cover removed (briefly) to check
>>lubrication and perhaps the origin of the noise. Use a long screwdiver
>>like a stethescope by pressing the blade end on various suspect places 
>>(like
>>the cam bearings) and the handle against your ear. You might be able to
>>locate where the noise is originating from (loudest) Do not change ends
>>of the screwdriver as injury may result.
>>
>>Let us know how you went
>>cheers roger
>>
>> >-- Original Message --
>> >From: "Nottingham Road Giftware" <sales at nottinghamroad.com>
>> >To: <rovernet at lyris.ccdata.com>
>> >Date: Sun, 27 Mar 2005 02:02:29 -0800
>> >Subject: [ROVERNET - UK] Clickety Clat
>> >Reply-To: rovernet at lyris.ccdata.com
>> >
>> >
>> >Hello All.
>> >
>> >I just replaced the head on my TC -- Ground valves/new seats etc. and
>>there
>> >
>> >is too much valve clatter.  The tappet clearances are very close to 
>> >spec,
>> >
>> >with most right-on (within .002 off-spec worst case).  Valve springs are
>> >
>> >good. Oil ways are clear to all cam bearings etc. The car runs great, 
>> >but
>> >
>> >the noise is getting on my nerves.  I have had valve clearances way off
>>in
>> >
>> >the past and they did not make much noise.  It does not seem like one
>>valve,
>> >
>> >but it is equal amongst all of them.  Anybody have the same problem?
>>Should
>> >
>> >I ignore it and keep on motoring?
>> >
>> >Steve Lawrence
>> >
>> >
>> >_______________________________________________
>> >rovernet mailing list
>> >rovernet at lyris.ccdata.com
>> >To unsubscribe, go to this web page, look near the bottom and follow
>>instructions:
>> >http://mailman.nipltd.com/mailman/listinfo/rovernet
>>
>>
>>_______________________________________________
>>rovernet mailing list
>>rovernet at lyris.ccdata.com
>>To unsubscribe, go to this web page, look near the bottom and follow 
>>instructions:
>>http://mailman.nipltd.com/mailman/listinfo/rovernet
>
>
>
> _______________________________________________
> rovernet mailing list
> rovernet at lyris.ccdata.com
> To unsubscribe, go to this web page, look near the bottom and follow 
> instructions:
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