displaying posts 1 to 6 of 6

Author Subject: Mocal thermostatic sandwich plate
cully

Seasoned Pro

Location: Cullompton

Registered: 12 Jun 2013

Posts: 1,093

Status: Offline

Post #1
has anyone had experience of these sticking open and not passing to the cooler

i think this has been one of the contributing factors in killing my engine Sad

just stripped the plate down to clean it and the shuttle part was stuck in the bypass tube

thus only letting oil bypass the cooler not flowing to cooler
Posted 20th Aug 2015 at 14:33
aaron6

Seasoned Pro

Location: On the sofa in maidstone

Registered: 16 May 2006

Posts: 5,840

Status: Offline

Post #2
So you must have seen the engine temps rise to a dangerous level?

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Posted 20th Aug 2015 at 20:31
cully

Seasoned Pro

Location: Cullompton

Registered: 12 Jun 2013

Posts: 1,093

Status: Offline

Post #3
I saw 130 on the oil water temp was good though....anyway this was i think one of two or three factors to my engines rattle

I have been experimenting in the kitchen!
boiling and cooling the mocal plate



i was right! the shuttle is sticking in the plate and not closing

after taking it apart you could see high points and marks where the shuttle was sticking









i have now cleaned up the rough castings around the port hole and have also slightly shrunk the diameter on the shuttle
it is now moving more free to the full stroke
Posted 20th Aug 2015 at 20:44
Day666

Seasoned Pro

Location: Bristol

Registered: 20 Apr 2013

Posts: 5,214

Status: Offline

Post #4
Got the same sandwich plate on mine...Big grin

Just feel the 19row cooler when on track days just to make sure it's very warm / Hot & flowing & working ?
Always wonder it it's working 100%?
Good work Paul Thumbs up
Posted 1st Sep 2015 at 23:04
Chr1sch

Seasoned Pro

Location: Worcester

Registered: 02 Aug 2014

Posts: 1,025

Status: Offline

Post #5
Yeah I'm running that one too, if anything mine runs a bit cool until it's on track for a good few laps
Posted 2nd Sep 2015 at 14:32
bigbadbowen

Seasoned Pro

Location: Winchester

Registered: 21 Nov 2003

Posts: 13,753

Status: Offline

Post #6
I don't even run a thermostat on the cooler in the 205 ! But seeing as it gets driven hard every time I'm not to bothered 😏
Posted 2nd Sep 2015 at 15:23

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