Oversized water pump pulley??

[Purestock240]

Is there any junkyard pulley that is good for an s13 underdrive on the water pump?

[supersayianjim]

probably a ka single cam truck engine??

[Purestock240]

probably a ka single cam truck engine??

nah they're v-belts

[codyace]

Which engine?

[UNITEDMASTER]

i been wondering the same thing.For SR, as a cheap underdrive upgrade....???

[Purestock240]

for those who are asking, the sr20 water pump pulley is bigger than the s13 KA water pump pulley and will hopefully fix cooling issues