OK, So, got a b18c1 with 12:5 compression, and A set of BIG cams. The car has been running 93 octane, but where I live I can no longer get it. So, I want to convert to E85, however, I dont know what size injectors I need. I believe you need 30% bigger than stock, but I dont know what stock are?

Any help, or opinions are apppreciated!

 

Some 440cc injectors should work just fine.
We stock precision 440cc injectors which seem to be the most bang for the buck.

 

You may be able to use DSM Blue top (450cc) injectors provided they can withstand the E85 (check on this).

 

i really liked the precision injectors. But if i had the money, i would run injector dynamics.
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Z4

 

ID 725's for N/A E85.

Your pump will most likely need something that can support 250+ Lph.

 

I personally would run something in the 625cc range. The new Fuel injector clinics work great!

https://honda-tech.com/forums/performance-45/dyno-street-proven-new-high-impedance-fuel-injector-clinic-injectors-2609903/