Hi David;
The oil flows out to the fitting on the cap to the remote oil filter bracket (IN) side and then (out) side of the filter to the (in) fitting on the oil thermostat labeled (E in) and out to the cooler (C out) through the cooler back to the Oil thermostat (C in) and out at (E out) to the Center bolt of the original oil filter to the engine. Place (T) fittings on the remote oil filter so you can plumb the oil Temp and Pressure gauges.
I use the Water temp gauge to give Oil Temp and a mechanical oil pressure gauge and to fill the space I added a Volts gauge (not the amps).
The only things you have to modify is the Original Oil Filter cap and center bolt. Put about one and a half 1/4 in pipe thread into the angled edge of the cap. This elbow will have to be brazed in place, having a thread and a half will keep the fitting in place while it's brazed. Remove the spring and check valve ball out of the center pipe (keep the split pin). Drill the through the center of the 17 mm hex end and tap to 1/4 in pipe threads so you can thread in a 1/4 in brass elbow with a 1/2 in hose barb on the other end. (this will keep the hose as close to the engine as possible). Then Drill through the seat of the center bolt's check valve about 1/4 inch or so using a drill bit the same diameter as the existing ID of the center bolt open end. I use a 8 inch steel pipe nipple (cut off the threads and find one that fits snug
enough to be tapped in place, once it is tapped in place cut it off flush with the end of the center bolt and drill to replace the split pin where it was originally. Now you have modified the original oil filter cap and center bolt and you can use the O rings to keep everything tight.
Don't worry about the check valve, the PH8A filter has one as do most oil filters. Also, remember to always fill the spin on filter before putting it on. And when looking for the correct hose to connect every thing up, look for PCV hose, it is made for oil and will hold up longer than vacuum hose and not as expensive as fuel line hose.
Bill
Re: [2cylinderhondas] RE: RE: Oil cooler to fit Honda coupe
Re: [2cylinderhondas] RE: RE: Oil cooler to fit Honda coupe
Yes, the remote filter is a great addition, but if you use a street elbow that has both the � in. threads for the cap and the � in. barbs for the hose without threading in another fitting you will have a tighter fit on both the cap and the center bolt.
Brass is good and I have used it well but finding someone to braze the fitting onto the cap is a chore.
I tapped the hole in the cap with about 1.5 of � in. pipe thread, which made it easier for the welds to be more exact.
The center bolt which originally had the check valve in it has to be drilled after removing the check valve ball, spring and split pin.
Save the split pin as you will need it to secure the sleeve you put into the center bolt.
Find a drill bit the same inside diameter of the center bolt and drill pass the ball seat about a quarter inch.
Find a 6 in. length of pipe nipple (steel is good to use here) find one that will fit tightly into the end of the center pipe.
The local Home Depot should have a bunch of them.
Take it home and cut the threads off one end and grind to make flat.
Before sleeving the center bolt turn it over and drill the end through and tap � in.
pipe threads for the brass fitting you will be threading into it.
Now go back to placing the steel nipple into the center bolt and tap it all the way down so that it seats.
Then drill the hole for the split pin you removed and cut the end off the steel nipple so it is flush with the end of the center bolt.
The same O rings are used for the cap and center bolt as before.
Remember that the oil moves out of the cap and back in by way of the center bolt.
The local VW shop should have all the remote filter parts including the Oilstat, an thermostat that allows the oil to go into the cooling coils when it gets to about 160 degrees and fully open at 165 degrees.
This allows the oil to travel into the motor before reaching running temperature and cools it when it goes over.
And if you use T fittings on the oil filter holder an oil pressure and temp gages can be attached.
Remember to keep all the hoses as close to the engine as possible, which will keep them away from road damage.
I have been running oil coolers since 1990 and none have had a broken hose or fitting on my cars, however others have but most were due to poor maintenance.
Bill
Brass is good and I have used it well but finding someone to braze the fitting onto the cap is a chore.
I tapped the hole in the cap with about 1.5 of � in. pipe thread, which made it easier for the welds to be more exact.
The center bolt which originally had the check valve in it has to be drilled after removing the check valve ball, spring and split pin.
Save the split pin as you will need it to secure the sleeve you put into the center bolt.
Find a drill bit the same inside diameter of the center bolt and drill pass the ball seat about a quarter inch.
Find a 6 in. length of pipe nipple (steel is good to use here) find one that will fit tightly into the end of the center pipe.
The local Home Depot should have a bunch of them.
Take it home and cut the threads off one end and grind to make flat.
Before sleeving the center bolt turn it over and drill the end through and tap � in.
pipe threads for the brass fitting you will be threading into it.
Now go back to placing the steel nipple into the center bolt and tap it all the way down so that it seats.
Then drill the hole for the split pin you removed and cut the end off the steel nipple so it is flush with the end of the center bolt.
The same O rings are used for the cap and center bolt as before.
Remember that the oil moves out of the cap and back in by way of the center bolt.
The local VW shop should have all the remote filter parts including the Oilstat, an thermostat that allows the oil to go into the cooling coils when it gets to about 160 degrees and fully open at 165 degrees.
This allows the oil to travel into the motor before reaching running temperature and cools it when it goes over.
And if you use T fittings on the oil filter holder an oil pressure and temp gages can be attached.
Remember to keep all the hoses as close to the engine as possible, which will keep them away from road damage.
I have been running oil coolers since 1990 and none have had a broken hose or fitting on my cars, however others have but most were due to poor maintenance.
Bill