Pro Design vs., Modquad Head

[spurdy]

I have a Pro Design Cool Head and just picked up a Modquad Cool Head off of ebay. Does anyone know if one or the other offers better cooling properties? I am building a 4 mil stroker and a stock stroke motor and would put the better head on the 4 mil if there is a difference.

 

I am also running an oversized radiator with engine ice and a couple of cooling fins on the lines. I figured with the oversized radiator and the engine ice either head would do just fine.

 

I also picked up a temperature probe from CRJ Performance. I built the last one I had, and I must say this new one is pretty cool. The thermocouple is housed in an inline aluminum body to splice into the return line and is connected to a 3/4" digital read out that clamps onto the handle bar. Pretty slick looking unit and easy to read while riding (unlike the thermometer style I have seen). What is a typical operating temperture range? More importantly, where would the redline be?

 

Thanks guys!

[FireHead]

I have a Pro Design Cool Head and just picked up a Modquad Cool Head off of ebay. Does anyone know if one or the other offers better cooling properties? I am building a 4 mil stroker and a stock stroke motor and would put the better head on the 4 mil if there is a difference.

 

I am also running an oversized radiator with engine ice and a couple of cooling fins on the lines. I figured with the oversized radiator and the engine ice either head would do just fine.

 

I also picked up a temperature probe from CRJ Performance. I built the last one I had, and I must say this new one is pretty cool. The thermocouple is housed in an inline aluminum body to splice into the return line and is connected to a 3/4" digital read out that clamps onto the handle bar. Pretty slick looking unit and easy to read while riding (unlike the thermometer style I have seen). What is a typical operating temperture range? More importantly, where would the redline be?

 

Thanks guys!

Neither cools any better than the other. I like the Mod Quad head because you don't have to use loinger head studs on your cylinders. However, the Mod Head is a rip off of the Noss head design.......... :geek: