Oil leak from Side-valve oil filter mounting

for those with Series MM sidevalve cars produced between September 1948 and February 1953

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gtt1951
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Re: Oil leak from Side-valve oil filter mounting

Postby gtt1951 » Thu May 16, 2019 3:39 pm

Hello Phil,
I have gasket paper in the gasket sheet pack that I got the cork one out of - I've got 2 thicknesses 0.35mm and 1.2mm.
The gasket that came in the "tractor" screw-in filter adapter is 0.8mm. Guess I should use the thicker paper.

George.

'51 Hi-light with Sidevalve 918 engine,
'55 4-dr with 803 engine,
'56 Traveller with 1098 engine.

philthehill
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Re: Oil leak from Side-valve oil filter mounting

Postby philthehill » Thu May 16, 2019 6:03 pm

Why not use the gasket that came with the adapter filter head?
You can use either thickness of gasket but my preference of the two would be to use the thinner 0.035mm provided you have good gasket faces.
The BMC filter head gasket is 0.825mm thick.


gtt1951
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Re: Oil leak from Side-valve oil filter mounting

Postby gtt1951 » Thu May 16, 2019 8:16 pm

Phil, the tractor gasket is a different shape and size and I was going to use that when I got the 90mm M10 bolts (which arrived today, but I had to move the car yesterday).

'51 Hi-light with Sidevalve 918 engine,
'55 4-dr with 803 engine,
'56 Traveller with 1098 engine.

gtt1951
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Re: Oil leak from Side-valve oil filter mounting

Postby gtt1951 » Sun Jun 02, 2019 7:08 pm

Phil,
I have now replaced the cork gasket with the thin paper one.
Won't know if this will seal better until I fire up the engine, but the car is on axle stands and engine is in gear whilst I work on the pedals and master cylinder (another thread).

'51 Hi-light with Sidevalve 918 engine,
'55 4-dr with 803 engine,
'56 Traveller with 1098 engine.

RobThomas
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Re: Oil leak from Side-valve oil filter mounting

Postby RobThomas » Sun Jun 02, 2019 7:35 pm

I changed the filter and oil yesterday on mine. Unscrewed easily enough with a leather strop with just a couple of drips. The HOF250 filter has a bypass and a drain-back valve so works well. No leaks. I'm going to order 2 more for the other cars.
Strangely, I had to use almost an entire 5 litre can of Penrite 20W60 when the manual suggests 6.5 pints (3.7 litres). Might be for the USHM2 engine?
Cardiff, UK

gtt1951
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Re: Oil leak from Side-valve oil filter mounting

Postby gtt1951 » Wed Jun 05, 2019 5:54 pm

Hello Rob, I still haven't found a suitable sized spin-on filter (length), but will go look at the HOF250 one that you mention.
At the moment, I'm using the original Purulator unit. George.

'51 Hi-light with Sidevalve 918 engine,
'55 4-dr with 803 engine,
'56 Traveller with 1098 engine.

gtt1951
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Re: Oil leak from Side-valve oil filter mounting

Postby gtt1951 » Thu Jun 20, 2019 8:49 am

Got the engine fired up again, but the thin paper oil gasket is leaking. I will try the next thickness up.
I still haven't had a chance to look at the HOF250 filters.
G.

'51 Hi-light with Sidevalve 918 engine,
'55 4-dr with 803 engine,
'56 Traveller with 1098 engine.

gtt1951
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Re: Oil leak from Side-valve oil filter mounting

Postby gtt1951 » Fri Jun 21, 2019 10:30 am

Thicker paper gasket hasn't stopped the dribble leak - I even used a scraper on the mounting point surface to make sure that there were no leftover bits of previous gaskets.
Interestingly, there is a small hole in the mounting surface, that doesn't have a corresponding hole in the Purolator head fitting.
I hadn't noticed this before, until I removed the thin paper gasket which showed a slightly raised circular mark.
George.

'51 Hi-light with Sidevalve 918 engine,
'55 4-dr with 803 engine,
'56 Traveller with 1098 engine.


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