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AC oil filter for 918cc engine

Posted: Thu Nov 01, 2018 8:04 pm
by manlyvaleaussie
This is Paul again in Yuma, my 918cc engine has the AC brand oil filter, does anyone know were I can find the sump to head gasket, the original fitted over the bottom of the sump but I imagine one that would fit into the groove of the base would work. O.D. of the sump is 3.470", I.D. of the base is 3.275", groove in the base is correspondingly different to allow for the gasket with an O.D. of 3.50", I.D. of 3.270". Any help would be greatly appreciated, photos attached. manlyvaleaussie

Re: AC oil filter for 918cc engine

Posted: Fri Nov 02, 2018 8:38 am
by RobThomas
In the UK the paper filter usually comes with the new seal, even for old filters. This filter is common to many UK cars and Farm Tractors. Fordson and Dexta come to mind. I replace them with screw-on filters elements for about £25 US Dollars.



https://www.ebay.co.uk/itm/Fordson-Dext ... :rk:9:pf:0

Re: AC oil filter for 918cc engine

Posted: Sat Nov 03, 2018 10:42 am
by RobThomas
purol3.png
purol3.png (775.21 KiB) Viewed 328 times
Here it is.

Re: AC oil filter for 918cc engine

Posted: Sat Nov 03, 2018 6:28 pm
by RobThomas
filterhead1.png
filterhead1.png (739.4 KiB) Viewed 319 times
purol1.png
purol1.png (1013.88 KiB) Viewed 319 times
2 different types originally fitted, AC and Purolator. New one is a bit smaller and takes a filter with pressure relief built in and needs an anti-drain valve, ideally.

Re: AC oil filter for 918cc engine

Posted: Sat Nov 03, 2018 6:33 pm
by RobThomas
Halfords Oil Filter HOF250 Extra Info
79MM Width
72MM Outer Seal Diameter
62.5MM Inner Seal Diameter