m20 turbo injectors

[mattyb]

hello all, im currently building an m20 turbo and im wondering what size injectors your using and what horsepower your running with your injectors. thanks

[ross2009]

for anything up to 400bhp use 440cc or 42lbs some thing like these
http://cgi.ebay.co.uk/NEW-440cc-FUEL-IN ... 5887ee80b1

what ecu you going to be running as im nearly at the end of my turbo build

[mattyb]

ill be using a megasquirt three, iv got 440s in now but if you use on of the many injector calculator knocking about on the net it tells me i ned 550s for 400 bhp.

ill stick with the 440s until its mapped and see how they get on i supose i can always upgrade in the future if the turbo has more to give.

cheers dude

[ross2009]

I dont know what mines gonna make mines a brand new build with turbo cat cam just got it running last weekend for over a year hope fully some where between 300 - 400 would be nice
I've got ms2 v3 but not wired in yet

[mattyb]

mines had the water jackets welded on head cat cam turbo cam some other shit that doesnt increase horse power so its pointless metioning and a holset hx35 with a 16cm exhaust housing.

[eta]

400hp (298 KW) will require 0.2988 kg/s of air. This will require 0.0249 kg/s of fuel assuming a 12:1 AFR at WOT @400 hp

Assuming this and that you have 6 injectors each injector will need to flow 0.00415 kg/s at 400 hp.

1cc of petrol roughly weighs 0.7g so that 5.9 cc's of fuel per second or with a 80% duty cycle then that equates to 444 cc/min. So your injectors should just do.

[ross2009]

I had a feeling eta would be along soon with the info lol

my heads been welded too only cost me 50 quid bet that lol
I've gone with a big t34 as I'm not going for out and out power but a nice torque curve would be nice

[mattyb]

nice info cheers eta. and you too ross. my bottom end has been rebuilt but just standard, well apart from skimed pistons, so not really sure how its gona cope with the power. id be well happy with 400 hp though especially since the standard car is only 185. so it should be interesting. lol

thanks again boys

[ross2009]

m20 is 171 bhp standard
I'm looking forward to how well it pulls and stopping it from going sideways lol

[mattyb]

so it is, where did i get 185 from. lol

its going to be a laugh, where are you getting yours mapped.

i live next to newcastle so theres no where up here to get stuff like that done.

[ross2009]

i think im gonna give it to ant and let him do it and just pay for it all that stuff is above me dont really know what im doing when it comes to that
i aint a clue to who you could see up your way and its a long trip down here