Shims

Roger Furneaux
Posts: 292
Joined: Mon Dec 13, 1999 4:38 pm

Re: Shims

Post by Roger Furneaux » Tue Feb 09, 2016 3:42 pm

hi Bob - no I cannot, but they are NOT NECESSARY!!! This must have been thrashed many times over the years, but the short answer is that putting shims in upsets the geometry of the valve gear. If the head is skimmed, the whole assembly simply moves down a little, and that can probably be taken up with the rocker adjuster screws. If you took a lot off, shorter pushrods might be required, but NEVER shims under the pedestals. So why Moss still sells them is anybody's guess... oc[b]T[/b]agonally Roger
On 09 February 2016 at 23:06 "Boballey747 BobAlley747@aol.com [mg-tabc]" mg-tabc-noreply@yahoogroups.com> wrote: Can someone tell the thickness of the shims that go under the rocker towers? The ones sold by Moss. Thanks Sent from my iPad ------------------------------------ Posted by: Boballey747 boballey747@aol.com> ------------------------------------ ------------------------------------ Yahoo Groups Links To visit your group on the web, go to: http://groups.yahoo.com/group/mg-tabc/ Your email settings: Individual Email | Traditional To change settings online go to: http://groups.yahoo.com/group/mg-tabc/join (Yahoo! ID required) To change settings via email: mg-tabc-digest@yahoogroups.com mg-tabc-fullfeatured@yahoogroups.com To unsubscribe from this group, send an email to: mg-tabc-unsubscribe@yahoogroups.com Your use of Yahoo Groups is subject to: https://info.yahoo.com/legal/us/yahoo/utos/terms/
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Norman Verona
Posts: 107
Joined: Sun May 17, 2015 4:21 am

Re: Shims

Post by Norman Verona » Tue Feb 09, 2016 11:00 pm

Roger,

 

It's called business, or making money. :)

 

[b]Norman Verona[/b]

[u]La Foie, 49520, Noellet, France[/u]

Tel: 0033 (0)2 41 92 73 44

Mob: 0033 (0)7 70 70 23 79

Web: www.frenchblat.com

MG Midget TC 10178

 

[b]From:[/b] mg-tabc@yahoogroups.com [mailto:mg-tabc@yahoogroups.com] [b]On Behalf Of [/b]ROGER FURNEAUX roger.46tc@virgin.net [mg-tabc] [b]Sent:[/b] 10 February 2016 00:42 [b]To:[/b] Boballey747 BobAlley747@aol.com [mg-tabc] mg-tabc-noreply@yahoogroups.com>; Boballey747 boballey747@aol.com>; mg-tabc@yahoogroups.com> mg-tabc@yahoogroups.com> [b]Subject:[/b] Re: [mg-tabc] Shims

 

 

hi Bob - no I cannot, but they are NOT NECESSARY!!! This must have been thrashed many times over the years, but the short answer is that putting shims in upsets the geometry of the valve gear. If the head is skimmed, the whole assembly simply moves down a little, and that can probably be taken up with the rocker adjuster screws. If you took a lot off, shorter pushrods might be required, but NEVER shims under the pedestals. So why Moss still sells them is anybody's guess...

oc[b]T[/b]agonally

Roger

On 09 February 2016 at 23:06 "Boballey747 BobAlley747@aol.com [mg-tabc]" mg-tabc-noreply@yahoogroups.com> wrote: Can someone tell the thickness of the shims that go under the rocker towers? The ones sold by Moss. Thanks Sent from my iPad ------------------------------------ Posted by: Boballey747 boballey747@aol.com> ------------------------------------ ------------------------------------ Yahoo Groups Links To visit your group on the web, go to: http://groups.yahoo.com/group/mg-tabc/ Your email settings: Individual Email | Traditional To change settings online go to: http://groups.yahoo.com/group/mg-tabc/join (Yahoo! ID required) To change settings via email: mg-tabc-digest@yahoogroups.com mg-tabc-fullfeatured@yahoogroups.com To unsubscribe from this group, send an email to: mg-tabc-unsubscribe@yahoogroups.com Your use of Yahoo Groups is subject to: https://info.yahoo.com/legal/us/yahoo/utos/terms/

>  


crankjournal
Posts: 3
Joined: Sun Nov 28, 2010 8:31 am

Re: Shims

Post by crankjournal » Wed Feb 10, 2016 8:16 am

I have 3 sets in stock, used, 2 are not Moss, the 3rd looks like it would have come from Moss. The ones that may have come from Moss  measure about .060", the other 2 sets about .050". If the valve is recessed into the head, or the rockers are replacement ones with pads on the tip, shims will correct the geometry. Also the shims may, or may not increase the valve lift ( correct the geometry) by about .010" in a otherwise original valve train. -----Original Message----- From: Boballey747 BobAlley747@aol.com [mg-tabc] mg-tabc-noreply@yahoogroups.com> To: mg-tabc@yahoogroups.com> mg-tabc@yahoogroups.com> Sent: Tue, Feb 9, 2016 6:06 pm Subject: [mg-tabc] Shims Can someone tell the thickness of the shims that go under the rocker towers? The ones sold by Moss. Thanks Sent from my iPad ------------------------------------ Posted by: Boballey747 boballey747@aol.com> ------------------------------------ ------------------------------------ Yahoo Groups Links To visit your group on the web, go to: http://groups.yahoo.com/group/mg-tabc/ Your email settings: Individual Email | Traditional To change settings online go to: http://groups.yahoo.com/group/mg-tabc/join (Yahoo! ID required) To change settings via email: mg-tabc-digest@yahoogroups.com mg-tabc-fullfeatured@yahoogroups.com To unsubscribe from this group, send an email to: mg-tabc-unsubscribe@yahoogroups.com Your use of Yahoo Groups is subject to: https://info.yahoo.com/legal/us/yahoo/utos/terms/

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