Side Feed Injector Data Chart...

**JZA70 R** · 26-03-2007, 03:35 PM

While trying to find 1JZ & 2JZ standard injector capacity and lag time i came across this link...

http://www.williams.co.tt/s15/inj_side-en.htm

I'm wondering how accurate the information is? (2JZ injector = 430cc??)

What do you think?

**VeeP** · 26-03-2007, 03:49 PM

hey now that uv brought it up. . .
is there any difference between a side feed and top feed injector apart from the obvious?

**chris davey** · 26-03-2007, 04:27 PM

That is saying that the 1jz and JDM 2jz injectors outflow their rating but the US 2jz ones underflow assuming 3 bar fuel pressure even though it is actually 42psi.

That could be why some people believe some big power figures can be obtained with the 440's and others believe 550's aren't enough?

**Mazman** · 26-03-2007, 09:07 PM

Originally Posted by VeeP

hey now that uv brought it up. . .
is there any difference between a side feed and top feed injector apart from the obvious?

side feed injectors are also cooled by being inside the rail/in the fuel

**JZA70 R** · 26-03-2007, 10:04 PM

so are JDM 2JZ injectors 430 or 440cc?

**DX20VT** · 27-03-2007, 05:08 PM

Originally Posted by JZA70 R

so are JDM 2JZ injectors 430 or 440cc?

dont know, but at 45 psi they flowed 500cc,

and the supposed 550's we replaced them with from USA spec one's flowed 600cc at 45psi.

**lojik** · 28-03-2007, 03:24 PM

Are side feed injectors more likely to introduce pressure pulses in the rail?

**DX20VT** · 28-03-2007, 10:35 PM

Originally Posted by lojik

Are side feed injectors more likely to introduce pressure pulses in the rail?

Not too sure, but have heard that with high flow pumps and injectors that you can get pressure drop across the rail,

but never seen it or tested for it so cannot say.
Maybe internet rumours.