lorenzookc

i have a d15b non vtec i got ahold of a vtec head and a p28 my question is can i just swap the head or would i need to buy new water pump and timing belt (cause i know you have to for a mini me swap)

accord2civic2prelude

it ia highly recommended that you go ahead and replace the water pump and timing while you are swapping heads. which head do you have btw?

Corksil

the non-vtec motor has a waterpump with 19 teeth. the vtec waterpump has 22 teeth. this is simple, it means - when the 19 tooth pump starts spinning faster than it should be (above 5600 rpm) then it will simply churn the water/coolant in the cooling system and start creating bubbles. this will create air in the cooling system and cause the cooling system to suck ***. it won't cool right.

when you get the 22 tooth vtec waterpump, and you hit high rpm (vtec) the pump will circulate the water the way honda designed, without bubbles, without air, and your vehicle will cool properly.

the timing belt, i dunno specifics. don't get the wrong waterpump, or your car will overheat and suffer.

Anon51

timing belt should go with whatever head you end up using. unless you change cam gears.

lorenzookc

thanks btw i have the jdm d15b head so then i would go with the d16z6 pump and timing belt right