TC Cold Oil Pressure 95PSI all of a sudden

[Darryl Mitchell]

Hi All

Quick question

Had my TC out for a run last week and all good with Oil pressure.  80PSI cold and 30PSI hot at idle after a 50 mile run at 60-70mph

Have just started the car and pressure cold at idle is 95PSI.

Anyone have ideas on what the issue might be?

Cheers

Darryl

TC1518

[Eric Worpe]

Hi Darryl, Could be either the pressure relief valve in the oil pump or the gauge is playing up. Oil pressure should be limited to 60 psi to reduce stress on the oil pump and reduce leaks. Suggest you unscrew the large brass nut on the bottom of the oil pump and withdraw the oil pressure relief valve assembly and clean. Regards, Eric. ________________________________________ From: mg-tabc@yahoogroups.com [mg-tabc@yahoogroups.com] on behalf of Darryl Mitchell darrylm@vox.co.za [mg-tabc] [mg-tabc-noreply@yahoogroups.com] Sent: 26 July 2019 12:57 To: mg-tabc@yahoogroups.com Subject: [mg-tabc] TC Cold Oil Pressure 95PSI all of a sudden Hi All Quick question Had my TC out for a run last week and all good with Oil pressure. 80PSI cold and 30PSI hot at idle after a 50 mile run at 60-70mph Have just started the car and pressure cold at idle is 95PSI. Anyone have ideas on what the issue might be? Cheers Darryl TC1518

[Darryl Mitchell]

Thanks Eric My dad and I restored the car 25 years ago, and I seem to remember something similar happening, but can remember what the fix was. Car had been standing for the last 2 years, have got it running again and have done 100 plus miles over the last month with no hassles.  Car has just ticked over 4000 miles since so still nice and fresh.  Car has probably done no more than 500 miles over the last 10 years. Car has a spin on filter, could it not be the filter that has deteriorated over 2 (or 10, don t know when it was last changed as my dad passed away last year, so can t ask him)years of standing and is now being bypassed? Kind Regards Darryl MitchellMobile: 0823303300DarrylM@vox.co.za

On 26 Jul 2019, at 14:05, Eric Worpe E.Worpe@surrey.ac.uk [mg-tabc] mg-tabc-noreply@yahoogroups.com> wrote:

Hi Darryl, Could be either the pressure relief valve in the oil pump or the gauge is playing up. Oil pressure should be limited to 60 psi to reduce stress on the oil pump and reduce leaks. Suggest you unscrew the large brass nut on the bottom of the oil pump and withdraw the oil pressure relief valve assembly and clean. Regards, Eric. ________________________________________ From: mg-tabc@yahoogroups.com [mg-tabc@yahoogroups.com] on behalf of Darryl Mitchell darrylm@vox.co.za [mg-tabc] [mg-tabc-noreply@yahoogroups.com] Sent: 26 July 2019 12:57 To: mg-tabc@yahoogroups.com Subject: [mg-tabc] TC Cold Oil Pressure 95PSI all of a sudden Hi All Quick question Had my TC out for a run last week and all good with Oil pressure.  80PSI cold and 30PSI hot at idle after a 50 mile run at 60-70mph Have just started the car and pressure cold at idle is 95PSI. Anyone have ideas on what the issue might be? Cheers Darryl TC1518 ------------------------------------ ------------------------------------ ------------------------------------ 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/

[Tweed]

Good sound advice as usual ... how you doing Eric!  Tweed. 

On Friday, 26 July 2019, 13:06:09 BST, Eric Worpe E.Worpe@surrey.ac.uk [mg-tabc] mg-tabc-noreply@yahoogroups.com> wrote:

Hi Darryl, Could be either the pressure relief valve in the oil pump or the gauge is playing up. Oil pressure should be limited to 60 psi to reduce stress on the oil pump and reduce leaks. Suggest you unscrew the large brass nut on the bottom of the oil pump and withdraw the oil pressure relief valve assembly and clean. Regards, Eric. ________________________________________ From: mg-tabc@yahoogroups.com [mg-tabc@yahoogroups.com] on behalf of Darryl Mitchell darrylm@vox.co.za [mg-tabc] [mg-tabc-noreply@yahoogroups.com] Sent: 26 July 2019 12:57 To: mg-tabc@yahoogroups.com Subject: [mg-tabc] TC Cold Oil Pressure 95PSI all of a sudden Hi All Quick question Had my TC out for a run last week and all good with Oil pressure.  80PSI cold and 30PSI hot at idle after a 50 mile run at 60-70mph Have just started the car and pressure cold at idle is 95PSI. Anyone have ideas on what the issue might be? Cheers Darryl TC1518 ------------------------------------ ------------------------------------ ------------------------------------ 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/

[Eric Worpe]

Hi Darryl, You've made a good point. The oil filter could offer a high resistance due to the element degrading, but in that case the oil filter by-pass would allow unfiltered oil to flow into the engine at a slightly reduced oil pressure. As the gauge take-off is post filter another remote possibility is a restriction inside the engine that's so serious that the oil pressure relief valve cannot limit the presure; that's unlikely as the oil pressure drops to 30 psi when hot and the bearings would also have sounded a death rattle by now. You mentioned that the spin on oil filter is possibly 10 years old, worth changing anyway. Regards, Eric. ________________________________________ From: Darryl Mitchell [darrylm@vox.co.za] My dad and I restored the car 25 years ago, and I seem to remember something similar happening, but can remember what the fix was. Car had been standing for the last 2 years, have got it running again and have done 100 plus miles over the last month with no hassles. Car has just ticked over 4000 miles since so still nice and fresh. Car has probably done no more than 500 miles over the last 10 years. Car has a spin on filter, could it not be the filter that has deteriorated over 2 (or 10, don t know when it was last changed as my dad passed away last year, so can t ask him)years of standing and is now being bypassed? --------------------------------------------------------------------- On 26 Jul 2019, at 14:05, Eric Worpe E.Worpe@surrey.ac.uk Could be either the pressure relief valve in the oil pump or the gauge is playing up. Oil pressure should be limited to 60 psi to reduce stress on the oil pump and reduce leaks. Suggest you unscrew the large brass nut on the bottom of the oil pump and withdraw the oil pressure relief valve assembly and clean. ________________________________________ From: mg-tabc@yahoogroups.com Had my TC out for a run last week and all good with Oil pressure. 80PSI cold and 30PSI hot at idle after a 50 mile run at 60-70mph Have just started the car and pressure cold at idle is 95PSI.

[Clive Sherriff]

Darryl, The filter element might have collapsed in sone way. Some oil filters are quite weak and can collapse after a time. Others have a rubber non return seal that again can fail and block things up. Some were designed for a "Reverse" oil flow and that again will cause a collapse. Finally some early spin on units had the oilways wrongly drilled, so you got reversed flow into the filter and filter collapse even with the "right" filter So first off, repl;ace the filter and see if you still have the problem. [img]https://ec.yimg.com/ec?url=https%3A%2F%2Fipmcdn.avast.com%2Fimages%2Ficons%2Ficon-envelope-tick-round-orange-animated-no-repeat-v1.gif&t=1565903557&sig=2AVB_gJAFuVCZq07yc3LYA--~E[/img] Virus-free. www.avast.com

On Fri, 26 Jul 2019 at 13:24, Darryl Mitchell darrylm@vox.co.za [mg-tabc] mg-tabc-noreply@yahoogroups.com> wrote: [u][/u] Thanks Eric My dad and I restored the car 25 years ago, and I seem to remember something similar happening, but can remember what the fix was. Car had been standing for the last 2 years, have got it running again and have done 100 plus miles over the last month with no hassles. Car has just ticked over 4000 miles since so still nice and fresh. Car has probably done no more than 500 miles over the last 10 years. Car has a spin on filter, could it not be the filter that has deteriorated over 2 (or 10, don t know when it was last changed as my dad passed away last year, so can t ask him)years of standing and is now being bypassed? Kind Regards Darryl MitchellMobile: 0823303300DarrylM@vox.co.za On 26 Jul 2019, at 14:05, Eric Worpe E.Worpe@surrey.ac.uk [mg-tabc] mg-tabc-noreply@yahoogroups.com> wrote: Hi Darryl, Could be either the pressure relief valve in the oil pump or the gauge is playing up. Oil pressure should be limited to 60 psi to reduce stress on the oil pump and reduce leaks. Suggest you unscrew the large brass nut on the bottom of the oil pump and withdraw the oil pressure relief valve assembly and clean. Regards, Eric. ________________________________________ From: mg-tabc@yahoogroups.com [mg-tabc@yahoogroups.com] on behalf of Darryl Mitchell darrylm@vox.co..za [mg-tabc] [mg-tabc-noreply@yahoogroups.com] Sent: 26 July 2019 12:57 To: mg-tabc@yahoogroups.com Subject: [mg-tabc] TC Cold Oil Pressure 95PSI all of a sudden Hi All Quick question Had my TC out for a run last week and all good with Oil pressure. 80PSI cold and 30PSI hot at idle after a 50 mile run at 60-70mph Have just started the car and pressure cold at idle is 95PSI. Anyone have ideas on what the issue might be? Cheers Darryl TC1518 ------------------------------------ ------------------------------------ ------------------------------------ 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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[Darryl Mitchell]

Thanks Clive Took the old duck for a drive earlier this arvie and as oil warmed up, so pressure dropped, by the time I got home pressure was 75psi at 30mph... I ll mozie off to the shop in the morning and get a replacement and see what happens... Kind Regards Darryl MitchellMobile: 0823303300DarrylM@vox.co.za

On 26 Jul 2019, at 19:24, CLIVE SHERRIFF csherriff99@gmail.com> wrote:

Darryl, The filter element might have collapsed in sone way. Some oil filters are quite weak and can collapse after a time. Others have a rubber non return seal that again can fail and block things up. Some were designed for a "Reverse" oil flow and that again will cause a collapse.  Finally  some early spin on units had the oilways wrongly drilled, so you got reversed flow into the filter and filter collapse even with the "right" filter  So first off, repl;ace the filter and see if you still have the problem. [img]https://ec.yimg.com/ec?url=https%3A%2F%2Fipmcdn.avast.com%2Fimages%2Ficons%2Ficon-envelope-tick-round-orange-animated-no-repeat-v1.gif&t=1565903557&sig=2AVB_gJAFuVCZq07yc3LYA--~E[/img] Virus-free. www.avast.com On Fri, 26 Jul 2019 at 13:24, Darryl Mitchell darrylm@vox.co.za [mg-tabc] mg-tabc-noreply@yahoogroups.com> wrote: [u][/u]   Thanks Eric My dad and I restored the car 25 years ago, and I seem to remember something similar happening, but can remember what the fix was. Car had been standing for the last 2 years, have got it running again and have done 100 plus miles over the last month with no hassles.  Car has just ticked over 4000 miles since so still nice and fresh.  Car has probably done no more than 500 miles over the last 10 years. Car has a spin on filter, could it not be the filter that has deteriorated over 2 (or 10, don t know when it was last changed as my dad passed away last year, so can t ask him)years of standing and is now being bypassed? Kind Regards Darryl MitchellMobile: 0823303300DarrylM@vox.co.za On 26 Jul 2019, at 14:05, Eric Worpe E.Worpe@surrey.ac.uk [mg-tabc] mg-tabc-noreply@yahoogroups.com> wrote: Hi Darryl, Could be either the pressure relief valve in the oil pump or the gauge is playing up. Oil pressure should be limited to 60 psi to reduce stress on the oil pump and reduce leaks. Suggest you unscrew the large brass nut on the bottom of the oil pump and withdraw the oil pressure relief valve assembly and clean. Regards, Eric. ________________________________________ From: mg-tabc@yahoogroups.com [mg-tabc@yahoogroups.com] on behalf of Darryl Mitchell darrylm@vox.co..za [mg-tabc] [mg-tabc-noreply@yahoogroups.com] Sent: 26 July 2019 12:57 To: mg-tabc@yahoogroups.com Subject: [mg-tabc] TC Cold Oil Pressure 95PSI all of a sudden Hi All Quick question Had my TC out for a run last week and all good with Oil pressure.  80PSI cold and 30PSI hot at idle after a 50 mile run at 60-70mph Have just started the car and pressure cold at idle is 95PSI. Anyone have ideas on what the issue might be? Cheers Darryl TC1518 ------------------------------------ ------------------------------------ ------------------------------------ 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/ [img]https://ec.yimg.com/ec?url=https%3A%2F%2Fipmcdn.avast.com%2Fimages%2Ficons%2Ficon-envelope-tick-round-orange-animated-no-repeat-v1.gif&t=1565903557&sig=2AVB_gJAFuVCZq07yc3LYA--~E[/img] Virus-free. www.avast.com