2nd topic, sorry again....Oil Filters

I've been told by a reputable VW guy....that if you have a full bypass system, the initial start up oil pressure can be enough to "Blow-out" a standard off the shelf oil filter. His recommendation was to make certain that I used a HP1 heavy duty Hi-Po oil filter to avoid that scenario. Watcha think?????
Also I intend to flow the oil first to a small cooling radiator, then to the remote filter, then back to the motor.....Goiod setup??????, bad idea???? why, and what has been your experiences with a set-up like this?

Thanks for your responses

Gary Clarke

This would probably only happen on a single-bypass engine case with a large capacity aftermarket oil pump, and it could also blow the oil cooler.

Dual bypass cases have a second relief valve in the oiling system at the flywheel side to specifically limit maximum oil pressure.

Also note that Fram filters, including the once good HP-1, are nowhere near the quality they used to be. If you're shopping discount auto parts stores buy a Purolator oil filter - they are still pretty good quality.

Hi Guys,

George, interesting to read your comments on Fram filters. A few years ago I belonged to the Volvo club and the tech guys there said the same think about the Frams. They had a tendency to blow. I never had that happen but I switched to the Volvo brand, a little more money but felt safer. The same comment about the Fram being very good some years ago but a cost study probably resulted in them cheaping the filter up. My JPS looks like delivery about the same time as your IM George, can't wait with the warm weather on the horizen.
Bruce Williams

Same here for Fram. Have a friend who races some kinda turn left on Saturday night car - small block Chevy. New engine this spring - fires it and oil press is good, w/revs pressure drops... a lot. Checks oil and finds billions of bubbles. Turns out the filter element came unglued from the can, moved up and blocked the oil passages. Engine builder sez "do not use Fram filters they have changed"

No vested interest in anything just FWIW
Bill

Standard after-market oil filters (most well known brands) have a typical rated burst pressure of 250 psi. The heavy duty type (HP-1 Fram, Mobil-1, K&N, etc burst at 500 to 600 psi. We haven't tested the Frams' for awhile, but I can confirm that Mobil and K&N will meet the 500-600 psi range. You need this extra beef if your oil pump pressure regulating valve is sluggish, sticks or fails. I have ran standard duty filters on my 1835 engine without any signs of over-pressure, but I now run K&N just for the security, plus they have a nice hex nut on the dome of the shell for easy installation/removal.

A Vw Rabbit or Golf desiel filter is a good filter to use, it is a full size, heavy case unit.

A Vw Rabbit or Golf desiel filter is a good filter to use, it is a full size, heavy case unit.