550cc Injectors Max Power?

[VLT020]

approx how many rwkw before 550cc rx7 injectors will max out?

also is there a way to use top feed injectors in a rb25 runners? i had a rb20 but im converting to rb30det with 25 head, if there is a way to fit em and they will cope with power then il use em. if not get bigger

[saliya]

approx how many rwkw before 550cc rx7 injectors will max out?

also is there a way to use top feed injectors in a rb25 runners? i had a rb20 but im converting to rb30det with 25 head, if there is a way to fit em and they will cope with power then il use em. if not get bigger

A standard rule-of-thumb for a 6-banger seems to be 1 engine hp per cc of injector - thus, 550hp for a 6-cyl motor with these injectors with standard rail pressures.

Regards,

SW

[Adriano]

You could try fitting an r34 neo inlet manifold, as they are the same bolt pattern as the rb25, and have 11mm top feed injectors. Maybe just the r34 rail will fit? 550cc injectors are good for 350rwkw at standard rail pressure, or up to 400rwkw or so with a FPR

[cruzin33]

Say if you go 1000cc injectors will this be ok on 400kw

[sky30]

I made 380rwkw using 550cc injectors, not close to maxing out. but i have a malpasi FPR.

[grandmasterb]

approx how many rwkw before 550cc rx7 injectors will max out?

also is there a way to use top feed injectors in a rb25 runners? i had a rb20 but im converting to rb30det with 25 head, if there is a way to fit em and they will cope with power then il use em. if not get bigger

PM if you want to sell them

[Birnie]

A standard rule-of-thumb for a 6-banger seems to be 1 engine hp per cc of injector - thus, 550hp for a 6-cyl motor with these injectors with standard rail pressures.

Regards,

SW

I think it's a good approx rule of thumb but that calculates engine HP.

eg. standard 370's, 370HP = 275kws, now subtract about 50kws for drivetrainloss etc = 225rwkws

..which is about the most i would expect to see out of these little ones. Heaps of peeps get just over 200 before upgrading, so the 'rule' is close