Heat issues (again)

Roots-type

+displacement
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Hope it works for you! An underdrive water pump pulley is an idiotic sounding idea. But then again so are all udp's.
 

Serfma

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My math was pretty wrong due to night time measurements with a phone flashlight, and having to eyeball with a measuring tape.

The two pullies were a 5.125" crank pulley and 6.3125" water pump pulley. Doing the math this time shows a ~61% reduction in water pump RPM. That's basing it off of being a stock oem crank pulley size of 6.7" which I have yet to confirm the actual size. Still substantial either way.

I have a guy that is actually running the same pulley system but rarely goes over 200F, but he is fully stock outside of the same UDPs, rear gears (4.30s) and an x pipe. Had him send me over OBD2 logs and sure enough.

Going to see how quickly I can get a stock crank pulley and see what things change for me.
 

Serfma

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I'm in for results.

I'm leaning towards faulty radiator,,
Hah I had an SR Performance radiator, saw the same things, then jumped up to a mishimoto radiator. Fan is shrouded + mounted to radiator, but I do not have the radiator boxed in at all because my lower core support is absolutely mangled. I have no lower air dam, but I have the top and sides.

Fan kicks in definitely. Lincoln Mark 8 fan, but not the 2 speed version that is apparently an absolute monster requiring running a relay and the likes. Lol
 

Serfma

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Crank and water pulley installed OEM. Temps are down by about 10-15* across the board. I sit around 195-200 at any speed any gear, haven't went uphill 5th gear 60+mph where I expect it to rise past 200.

An absolute massive increase in cooling efficiency.
 

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