The Stovebolt Site Forums The Shop Area Engine Shop installing a full flow oil filter on a 235

i was reading this web site http://speedprint.com/deves50/oilfilterinstall.php?page=1&itemsperpage=15
and found it interesting, my 235 already has a oil canister with the two oil lines going to the block, that webpage sais that only the 261's should have the 1/2 oil lines, that got me confused, another thing, why is he blocking the passage going to the main caps? would i have to do this?

Not sure abut your questions but my '54's 235 has an oil filter like you describe(I think) and it looks factory. Pictures in my signature.

what you are plugging in this modification is the channel coming from the oil pump going to the oil galley. this allows all the oil leaving the pump to go through the filter and then back into the galley to the bearings. without the plug the oil would short circuit and any filtering would be useless. i did one on the 270 in my gmc and uses a spin on filter bracket that mounts under the generator using the generator mounting bolts into the block hidden out of sight between the front crossmember and tierod for easy access. i plan on doing that on a later 235 when the time comes.

The link show the install of a full flow filter system. Your filter is a bypass system. The main galley from the pump to the mains is pluged and reroughted externaly through the full flow filter and back into the main galley through another external fitting to feed full flow filtered oil to the engine.

omar,

1/2 NPT pipe thread on 58-62 261 fittings (only those years; only on 261 engines).

Your lines are most likely 3/8" thread. The oil canister on a 235 was an option. I think that all 216 (37-53), 235 (41-62), and 261 (54-57) blocks came drilled from the factory to allow the addition of a by-pass oil filtration system.

Deve's very clearly described procedure pertains to all high pressure 235s (and 54-57 261s). What year is your block?

Tim

I think you mean 1/8 NPT on the lines, not 3/8.

Thanks for the correction, Bill. The original by-pass filter lines are 1/8" NPT; Deve's coversion uses 3/8" NPT; and, the 1958-62 261 lines are 1/2" NPT. Is this correct?

That sounds right.

my block is off of a 54 chevy pickup, that pretty much makes sense, thanks for all the info, later on when i rebuild my engine ill keep this in mind, its running real good right now and has very good compression, thanks