Like many, I use a Baldwin B9 filter with the RJC Biggie filter adapter, instead of a PF24 filter. The Baldwin B9 has consistently excellent build quality, plus is about 20% larger. Many are already familar with the B9, but here is a comparison pic: http://community.webshots.com/album/36060495QXkyhh
I also use Baldwin equivalents on my daily driver vehicle.
I have researched the possibility of another filter for the TR/GN cars ... the Baldwin B253. The B253's original application is in certain Ferrari & Porsche cars, and Baldwin notes "Can be used in racing applications."
The B253 has some nice improved features over the B9.
1) B253 has a built-in 20 psi bypass valve, B9 does not.
The measly, stock 4-6 psi bypass in the stock oil pump is probably always leaking some oil, bad news if there is a cam or bearing wipe.
So some run a plugged bypass in the stock oil pump. But a plugged bypass in the oil pump risks catastrophic filter element collapse and engine damage if the engine oil is very cold.
2) Both B9 and B253 have anti-drainback valve.
3) Pressure ratings
B9- 100 psi operating pressure with a burst pressure of 200 psi.
B253- 300 psi operating pressure with a burst pressure of 600 psi.
No one is operating this high, but it's an indication of even sturdier build quality on the B253.
4) Size and shape of B9 and B253 are nearly identical, to within a few millimeters.
Critically, same sealing gasket ID and OD is used. B253's gasket is 1/16" thicker, probably not a concern.
5) Thread sizes are a key difference, and prevent a direct substitution.
B9 is 13/16-16.
B253 is 3/4-16. (1/16" smaller ID).
6) As an incidental bonus, the B253 fits the Permacool # 5021 remote transmission filter mount (1/4" NPT inlet and outlet ports, and 1/8" NPT port for oil temperature). One could use the same filter for both engine oil and as an external tranny filter.
I have contacted RJC racing (Biggie adapter manufacturer), and time permitting, Jason may attempt fabricating a B253 adapter as a trial, in the near future.
I also use Baldwin equivalents on my daily driver vehicle.
I have researched the possibility of another filter for the TR/GN cars ... the Baldwin B253. The B253's original application is in certain Ferrari & Porsche cars, and Baldwin notes "Can be used in racing applications."
The B253 has some nice improved features over the B9.
1) B253 has a built-in 20 psi bypass valve, B9 does not.
The measly, stock 4-6 psi bypass in the stock oil pump is probably always leaking some oil, bad news if there is a cam or bearing wipe.
So some run a plugged bypass in the stock oil pump. But a plugged bypass in the oil pump risks catastrophic filter element collapse and engine damage if the engine oil is very cold.
2) Both B9 and B253 have anti-drainback valve.
3) Pressure ratings
B9- 100 psi operating pressure with a burst pressure of 200 psi.
B253- 300 psi operating pressure with a burst pressure of 600 psi.
No one is operating this high, but it's an indication of even sturdier build quality on the B253.
4) Size and shape of B9 and B253 are nearly identical, to within a few millimeters.
Critically, same sealing gasket ID and OD is used. B253's gasket is 1/16" thicker, probably not a concern.
5) Thread sizes are a key difference, and prevent a direct substitution.
B9 is 13/16-16.
B253 is 3/4-16. (1/16" smaller ID).
6) As an incidental bonus, the B253 fits the Permacool # 5021 remote transmission filter mount (1/4" NPT inlet and outlet ports, and 1/8" NPT port for oil temperature). One could use the same filter for both engine oil and as an external tranny filter.
I have contacted RJC racing (Biggie adapter manufacturer), and time permitting, Jason may attempt fabricating a B253 adapter as a trial, in the near future.
