From:John Yushkevich
Subject:RE: spin on filter grief Date:Mon May 23 08:56:50 2016
Response to:6227

My apologies for not being fluent on Indian oil system design.
What type of pressure relief valve does it have?
Is it a orifice or a spring loaded poppet valve?
If it's an orifice, it will not modulate to compensate for changes in viscosity, therefore developing excessive pressure during cold starts.
I am running an "old iron" spin on remote on my Deluxe and it has never given me any problems however on my Indian 4 the same setup has been trouble from the getgo when starting from cold it often blows the gasket. There is so much pressure build up it has bent filters internally. I am working on a solution but am not keen to lower the engine pressure as it seems to be spot on running at 50 pounds ay highway speed. Has anyone else had this problem?