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dehbowwez

Ireland
34 Posts
Posted - 02 Nov 2012 :  18:30:16  Show Profile  Reply with Quote
Hi lads. I'm getting a very low oil pressure reading on my Roots 1725. Idle is just above zero. Running its about 20. Is this normal? I,m running 20w/50, should I go more 15w/40. Ideas please. Cheers Sam.

1922

United Kingdom
549 Posts
Posted - 06 Nov 2012 :  13:45:26  Show Profile  Visit 1922's Homepage  Reply with Quote
20w/50 is the correct stuff.
Oil pressure should be up around 50 cold, 30 - 40 when warm.
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Fastback Thomas

Belgium
423 Posts
Posted - 06 Nov 2012 :  18:27:44  Show Profile  Reply with Quote
Think it would be worth checking to pressure relief valve, maybe refurbishing if that's possible otherwise replacing it...

'68 sunbeam rapier fastback {B341006846 OD/LHO}
I like a car that looks normal but really knocks your socks off!!
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bigt80

United Kingdom
1051 Posts
Posted - 06 Nov 2012 :  20:33:55  Show Profile  Reply with Quote
Yes, that's most likely and possible that gauge isn't registering properly: they don't usually give trouble, but it could be that. ~unfortunately with no warning light it is not easy to evaluate.
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dehbowwez

Ireland
34 Posts
Posted - 08 Nov 2012 :  19:23:24  Show Profile  Reply with Quote
Thanks lads. Think the carb floats sticking and flooding into the bores.
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dehbowwez

Ireland
34 Posts
Posted - 11 Nov 2012 :  19:46:39  Show Profile  Reply with Quote
Thomas. Wheres the pressure release valve?
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1922

United Kingdom
549 Posts
Posted - 11 Nov 2012 :  20:31:28  Show Profile  Visit 1922's Homepage  Reply with Quote
Oil pressure relief valve is in the aluminium block that the oil filter screws onto.

It's the large bolt just below the filter, the complete valve can be removed and cleaned.
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dehbowwez

Ireland
34 Posts
Posted - 11 Nov 2012 :  21:46:14  Show Profile  Reply with Quote
Cheers boss.
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