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michaeldavis39

Tr6 brake servo improvement?

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Would it be beneficial to fit a non return valve to the TR6 brake servo - I ask as I have seen one fitted to a TR6 for sale and looking at the ebay linked advert below it mentions Pi model cars - what do you guys think? 

 

https://rover.ebay.com/rover/0/0/0?mpre=https%3A%2F%2Fwww.ebay.co.uk%2Fulk%2Fitm%2F254353398274

 

Thanks in advance

 

Michael

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Hi Michael,

I thought they were standard fitment? The valve in your link is what I have fitted having given up on the type that screws into the throttle body (Land Rover part I believe), this gave a loud "tapping ticking" noise though the induction tract due to a weak spring.

I have an aftermarket brake servo and couldn't find a non return valve of the correct size to fit directly into the servo body, so the inline version in your link is/was the perfect solution.

Richard.

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The TR6 servo has a NRV as standard fitted.  The servo should hold vacuum after the engine is switched off.

Regards,

Waldi

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Yes--the stock hose connector has an internal check valve.  I verified it's operation when I did my servo.

Ed

IMG_0003a.JPG

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4 minutes ago, michaeldavis39 said:

Thank you so no point in adding another nrv to the servo, perhaps the TR6 I saw for sale had a failed servo and had an extra nrv fitted to compensate?? 

 

Michael

Maybe the seller just had the same problem I had?

Richard.

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Hi Michael,

adding an additional NRV will reduce the efficiency of the servo, as each NRV restricts the flow and reduces the vacuum since it has a spring load that results in a pressure drop (well, rise in the case of a servo).

Waldi

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