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I am currently. Running a k24 Frank with k20a2 crank pulley running all accessories like AC, k20 water pump ect.my problem is that I am using a a3 serpentine belt and it feel loosen under heavy acceleration. My check engine light blink as the belt seem loose. When I put the a3 cp with stock belt its fine. So any idea what belt is needed? I've Google and wasnt able to find what I am looking for. I've seen a lot of people who running an a2 Cp are running with out AC.
I believe what you want is the k20 belt off the 06+ SI. Thats the belt i have on my k24 swap, also using the k20a2 CP and have perfect tension.
i never really thought about the 06 Si belt. Thank you so much =)
Success?
Fit perfectly,thank so much cyllrus.p the car respond so much faster and car pull amazing. For future build with K24 with k20 crank pulley use 06-09 civic si belt.Quote:
Originally Posted by cyllarus
Wow nice find. The only solution I have heard of is to put washers behind the alternator :msmile:
I'll have to get me one of those belts.
How did you feel it loosen under acceleration? How does is respond differently now?
Good work! Very good information.Quote:
Originally Posted by cyllarus
Glad to help!
To me the change between the stock A3 pulley and A2 pulley was not about it "pulling harder" but more about a crisper throttle tip in.
Either way it DOES make a noticeable difference...
While cheap, its not the easiest mod, Honda estimates you need between 600-700 ft-lbs to break loose a crank bolt that has been on the car for a while. not easy to do while the motor is in the car.
O ok... I thought he was sayin that a different serpentine belt causes the change in response.
The reason I went with the a2 pulley was to prevent overdriving accessories since my rev limit is higher than an a3.
I never thought that the pulley would make a difference at the top ive got a k24 pulley i believe with a k20 head so if i change it i will have better response?