Uncle Arthur

Just wanted to check the 1.8 (tantop) injector capacity.

The DIY FAQ states two different values - 254cc and 265 cc.

Further, I've done numerous searches online and also have a (saturated) value of 240cc.

Which is correct???

I'm looking to know exactly so I can input the correct injector correction factor into the EMB.

Cheers.

magnamx-5

iTrader: (7)

EMB correction isnt enough to register people use them stock with no mods, so just put in 240 and call it a day.

steelrat

Tan top injectors in a M1, will run 235/240 cc.... The reason they flow up to 260 in a M2, is because of the 60psi fuel system....

So if you are running the stock return system, in an M1, 240 will be fine for a correction factor. <G>

The M2.5's have different injectors IIRC though, which might flow a little more... different colour top too....

dave,

Uncle Arthur

Thanks heaps guys.

y8s

iTrader: (8)

injectors are usually spec'd at 43 psi.

boostinsteve

I used 240 and it came out real close to perfect.

Braineack

iTrader: (62)

I have two specs because I havent seen a consitant flow yet. I've seen some reports of around 255cc or so (Witchhunter's) @ 43.5psi, and some at 265cc or so (Bruce's, Ben's and Flyin' Miata) @ 43.5psi, but it gets you in the ballpark.

But from my dyno results, they worked out to be 265cc, and what I consider them to be.

It's just like the 305cc supra injectors that all flows I've seen flow them at around 315cc.

Ben

iTrader: (33)

Really the difference between those values isn't great enough to matter. There's quite a bit of fudge factor here as closed loop the car will figure out fuel delivery on its own and open loop is programmable via the emb.