I'm planning on upgrading my jrsc kit with a 9lb pulley. and tuning it with hondata and 440's, is that ok on a stock block that has 70000 miles on it

 

o hyeah man should be fine , just make sure you get it plenty of fuel and timing!! because from what i know those jrsc's push out some pretty hot air , anyway though i think it will be ok as long as you have the timing and fuel to it , i would also suggest you get an msd btm

 

i know of 2 civic si's running 12 psi with the jrsc on stock motors.....

hondata, 440's, and add a in-take fuel pump u will be more than safe... as long as u tune it decent.

 

should i also consider upgrading my fuel rail with the 440's i'm getting

 

bump this

 

Stock fuel rail will be fine. I reccomend getting a true 1:1 fuel pressure regulator. Anyone tuning your Hondata will tell you the same thing. Other than that those injectors will be perfectly fine for this application.

 

what pulley setup are you looking to use?

i'm using motorvations motorsport stepper pulley. (205) 661-3600
give them a call