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Warm your engine faster with this thermostatic bypass system. At temperatures below 180 degrees, an inner valve opens, allowing 90 percent of the oil to bypass the cooler, thus heating faster. Great for cold climates!
Features:
Specs:
When fluid temperatures exceed 180 degrees, the thermostat's interior valve closes so that 95 percent of the oil will be directed to the cooler. When the temperature falls below 180 degrees, however, the valve opens, allowing 90 percent of the oil to bypass the cooler and head back into either your engine or transmission. Preventing that fluid from entering the cooler will help to raise its temperature faster so your vehicle will be ready to go sooner - no more long waits, no more cold-oil shock. When valve is in bypass mode, 10 percent of the oil is still allowed through to the cooler to maintain constant system pressure.
Mount with Mounting Bracket Kit for Derale Fluid Control Thermostats (D25793).
Average Customer Rating: 4.0 out of 5 stars (4 Customer Reviews)
Warm your engine faster with this thermostatic bypass system. At temperatures below 180 degrees, an inner valve opens, allowing 90 percent of the oil to bypass the cooler, thus heating faster. Great for cold climates!
Moved oil filter because the old cast aluminum (zinc) part had cracked. Replacement couldn't be found so I had a machine shop cut some 1/2-in. aluminum plate to cover the old mounting location on the engine, drilling & tapping it for the remote filter fittings. Bolted the relocated oil filter piece to the firewall and woo hoo! Much easier to change filters now!
Had 3 incidents--stock filter, metric, blew off driving down the road. Hafta use the Fram filter that the instructions call for, not the one your engine manufacturer recommended.
Months later the pressure hose, one carrying oil from engine to the filter, blew off. Had to double-clamp it to get it to stay on.
Finally, noticing an oil leak a few months later, I found a 3mm long slice or break in the pressure line, parallel to the flow and located 2 or so inches back from the engine-side fitting. Replaced line and, so far, OK
Don't confuse this 1/2" NPT model with the smaller 3/8" NPT ported Derale or clones. This is a full-sized thermostat with enough flow for a racing engine.
Purpose of this device is to block oil to your oil cooler until the engine gets to and above operating temp. The smaller 3/8" device is better suited to transmission coolers or stock to mild air-cooled VW engines.
We bought this 1/2" device for a 2.2 litre air cooled VW road racing engine, which needs the flow.
Price and service great. Same product I saw on other websites but much cheaper.
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