schwim wrote: So instead of supplementing the stock oil cooler, you used it's ports to run only a remote cooler. Did that work well for you? Did you have a fan to force air through it or was it passive?...
An attempt to describe how the "Riechert" full flow oil cooling system works...
The stock oil cooler is replaced by a thermostat (the rectangular thingy in the first two pics above) which controls the oil flow to the front oil cooler.
To enable the thermostat to do so it's necessary to use a second spring with the original oil pressure relief valve (#1 in the stock lubrication diagram above).
This will force the relief valve to stay closed even with cold engine oil (high oil pressure).
Hence the oil has to pass the thermostat at every given operating temperature or pressure.
If the oil temperature is below approx. 85°C (185°F) the thermostat will bypass the front oil cooler.
The oil will return directly from the thermostat back into the engine case.
Once the oil warms up above 85°C (185°F) the thermostat starts to open the full flow circuit.
The oil now flows through the in line filter under the right front fender and then on through the front oil cooler and finally back into the engine case via the thermostat.
- The system works with the stock oil pump.
- No need to use a fan with the front oil cooler.
- It's relatively easy to install without major modifications.
- No need to alter the engine case.
- The fan housing's original doghouse duct is closed with a bolt on tin - more air is available for head and cylinder cooling.
- The engine oil volume is increased.
The highest oil temperatures I ever experienced were about 100°C (212°F) at protracted bumper to bumper city traffic
and approx. 115°C (239°F) during excessive full throttle "Autobahn" speeding.
Ambient temperatures were about 30°C (86°F) in both cases.
The maximum oil temp while cruising normal (country) roads with occasional speeds up to 130 kph (80 mph) is about 90°C (194°F).
Note: my engine is only mildly tuned and I'm trying to avoid long haul high revs.
So oil temperature depends on the engine set up, the size of the front oil cooler and your foot on the gas pedal.
Talking about public street use here of course. Road Racing, Rally, Baja, Dune etc. may require different set ups...
Super_Randy wrote: ...are those kadron carbs? if so, what manifolds/throttle linkage is that? looks like a clean set up.
These are Solex 34 PCI carbs. Back in the day they were used on NSU Prinz
and BMW 700
The manifolds and throttle linkage are made by "Riechert".
You are right it's a super clean, simple and smart set up. I love it!
I have no idea if the manifolds will fit Kardons.
Should I take the measurements of the manifold's?
Super_Randy wrote: ...also you look like my friend Jeff. no joke dude you could pass for at least his older brother. maybe even for him 10 years in the future
Well... Back in the 1850s some of my ancestors left Germany for America...