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Pinto oil breather
Mikef - 20/7/14 at 11:46 AM

Hi All.

I recently acquired a Pinto Engine 2L with breather on the side of the block , under the inlet manifold, and another on the rocker cover. This has obviously been put in by somebody. Both of these pipes go to a catch can. The first time we have used it on a track day the oil coming out of these breathers was really excessive. Virtually a litre in 5 laps. Someone has suggested that the breather from the crank case should go to the pipe on the rocker cover and just let the oil filler cap do the breathing? Any help or suggestions gratefully received as always.

snapper - 20/7/14 at 01:55 PM

This is certainly 1 way to stop excessive oil in the catch tank
Another is to use the other hole on the right side of the 205 block as a drain back from the tank

snapper - 20/7/14 at 02:14 PM

Another option was to run the block and rocker breather together with a T connector and run that to the catch tank
A baffled tank with wire wool separator also helps with the oily mist
My block has a cover over the block oil breather inside, if it doesn't oil is thrown up the pipe
Caterham do an oil separator that plugs in

FuryRebuild - 20/7/14 at 05:08 PM

My rocker cover had a decent breather hole cut and welded in - pintos need to breathe a lot. My rocker cap was machined off and sealed as well to get it into a fury. I found the best way was to use the lower breather valve as supplied by Burtons (who basically stated ... yeah, there's a one way no pressure valve in there - let it breathe), and that was T'd into a single catch tank which had little air filters on it to allow the pressure to equalise.

I found that it would kick a reasonable amount of oil out until it settled down to a sane level.

johnemms - 20/7/14 at 08:20 PM

If the little filters get wet with oil vapour they will 'not' let the engine vent properly & cause back pressure..
Happened to me.. I now have a pipe from the catch tank leading to the floor for venting.

Mikef - 21/7/14 at 06:47 AM

Thanks for the answers. Still not sure what to do? Its the volume of oil that is being vented that is the issue. Over a litre in just a few laps ? This seems very excessive to me. What thoughts about blocking off one of the breathers, say t he crankcase one and then just using the top one from the rocker cover. What would the results be if it was not breathing enough?

Andy D - 21/7/14 at 09:19 AM

quote:
Originally posted by Mikef
Thanks for the answers. Still not sure what to do? Its the volume of oil that is being vented that is the issue. Over a litre in just a few laps ? This seems very excessive to me. What thoughts about blocking off one of the breathers, say t he crankcase one and then just using the top one from the rocker cover. What would the results be if it was not breathing enough?


Are you sure you aren't over filling it? If I over fill mine it soon dumps the excess into the catch tank, then it's OK.

Mikef - 21/7/14 at 10:20 AM

half way up the dipstick and a winged sump.

Andy D - 21/7/14 at 12:06 PM

quote:
Originally posted by Mikef
half way up the dipstick and a winged sump.


Are there any marks on the dipstick, and is it the correct one for the engine? I run an accusump with mine, and fill it slightly over the top mark, but I presume when it's running, and the accusump is filled, the level will be more down towards the bottom mark on the dipstick.

Mikef - 21/7/14 at 12:18 PM

good point . As far as I know it is , I have another pinto engine here and I will check it that. I reckon I filled it with about 4l? that was with a new filter , so even with the reduced sump , I don't think that is a lot.