Has anyone ever split an oil filter after plugging the oil filter bypass in the block? I see a lot of people warn against it, but Iwant to know if anyone has actually done it.

I am planning to plug the bypass in the all new ITS engine I am building since the previous owner didn't plug it and neglected to clean the engine internals properly so the engine ate itself from the inside out.

Note to all the engine builders, make sure every square millimeter of the engine is spotless before putting anything together.

boltmans,

I used to build L-28 GT-2 engines. The by-pass was removed, and the by-pass port pluged. Dry sump systems were used, which produce more pressure and volume than a stock pump. Different types of remote filters were used. None had a problem with blown seals. However, many had tank heaters, and all ran synthetic oil which is thinner and easy to pump when cold.

Its been a while, but I think ITS rules don't allow dry sump sustems. So if you plug the by-pass on a stock system, that stops the oil from completing its circut. The way I see it, you would have to enlarge, and tap the by-pass port for a fitting to run to a remote, non by-pass type filter. Then run the return line back to the center pressure in port of the block filter boss. Would that be ITS legal? Theres a few ITS racers on this site who will hopefully enlighten us. I havn't built one of those in few years, but oil still has to flow out of the block, through the filter & back in again.

Phred

Remote filter housings and plumbing associated with either it, or an oil cooler is allowed in IT, no dry sumps though.

I ran a remote filter, and an oil cooler on my 280 in IT, but didn't plug the by-pass, as I used the screw on type adapter for the remote filter.

Removing the bypass valve and plugging the passage, without otherwise changing the lubrication system, seems to be quite common. I have never heard of a resulting problem, in a semi-tropical climate.