How to get a little heat with crossovers...?
#11
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I have a crossover with a bypass with a 140* thermostat with 2- 3/16 holes in it. I also have the back of the intake manifold taped for a #4 fitting and a hose run to the thermostat housing. AFR 315 heads with .00018 valve guides. All four corners of the engine stay very even. Works for me.
#15
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I have a crossover with a bypass with a 140* thermostat with 2- 3/16 holes in it. I also have the back of the intake manifold taped for a #4 fitting and a hose run to the thermostat housing. AFR 315 heads with .00018 valve guides. All four corners of the engine stay very even. Works for me.
#16
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Tim, first I would say that ideally Mike is correct in suggesting going back to the recirculating set up, with that said if you elect not to do that you might look into restrictors in place of the t-stat, they sell them in different sizes so you can adjust the out flow of water from the block, a few down sides to this is that you will have to watch your water pressures at WOT, and as the lake water gets warmer you may need to change to a larger size hole to reduce the heat, I'm not condoning this approach but it is another option that you can research.
#17
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Join Date: Sep 2002
Location: Lake St. Clair
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I used to run crossovers , but got tired of playing with different t stat set ups to keep it dialled in
#18
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I tried to run stats (with the cross over only no hose between) on an NA engine, drilled the holes ect ect I could never get the temp regulated, if I drilled the holes to keep the temp at 140 at WOT then at cruise the temp was super cold (wouldnt even read)
On the other side if I drilled the holes on the stat to be at 140 at cruise, then at WOT the engine would get super hot
Crossover with the thermostat hose
THen I tried the crossover with the tube between the cross over and the thermostat, that didnt seem to work well either, so the circ pumps went back on
Just my experience in Lake saint clair, now on the blower engines that I have the crossover seems to work just fine (but everything on this engine is cast iron)
On the other side if I drilled the holes on the stat to be at 140 at cruise, then at WOT the engine would get super hot
Crossover with the thermostat hose
THen I tried the crossover with the tube between the cross over and the thermostat, that didnt seem to work well either, so the circ pumps went back on
Just my experience in Lake saint clair, now on the blower engines that I have the crossover seems to work just fine (but everything on this engine is cast iron)
#20
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Join Date: Aug 2007
Location: Sandown, NH - Sebago Lake Region, ME
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Just curious why there is no talk of switching to a closed cooling setup? I run closed cooling on my scarab and love the stable consistent temperatures!
I am guessing it's a cost thing?
I am guessing it's a cost thing?