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Oil pump question


SpitFire6
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The oil pumps are slightly different early are iron later aluminium. Also the pickups are different, the early 1147 didn't have a strainer then they went to a straight pipe with a strainer and the later 1500 had an angled pickup and I believe a slightly larger pump. They will all fit though as I have the late angled type in my 1147. I can't see why the herald and spitfire would have different oil pressure as it's the same block crank and oil pump (for cars of the same period) 

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Most suppliers these days are selling the same spring for all 4 cylinder cars; 131535 or 131535UR. Early Heralds were 100420; I don't have the Spitfire manual to confirm but I'd guess that newer version is what's on offer these days for all 4-cylinder cars. It would be interesting to know the spec of the uprated version compared to the standard. Some suppliers are also selling the same spring for the 6-cylinder cars too. 

 

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so  Ian   where does the 60 come from  its not in any of the OE manuals i have ...  be it 4  IV or four  it seems a book typo problem or miss quote

all 4 cyl have the same spec whatever they are fitted to    some pump tolerances evolve but the base spec 40-60  x2000  is common for all time 

pete

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