3.2 injector flow rate needed

does anyone know the flow rating on stock 3.2 injectors?

Thanks

flow rate of 84-86 injector is 22# per hour. 87-89 may be the same..or very close.

[stlrj]

Do you know if the flow rate was based on a standard fuel pressure of 3.0 bar(43.5 psi) or Carrera fuel pressure which is much lower?


Joe

[Bill Verburg]

Bosch #0 280 150 951 346cc/min 33.9lbs/hr 69.2est hp ea 300kpa test pressure

Bosch #0 280 150 201 236cc/min 23.1lbs/hr 47.2est hp ea 300kpa test pressure

I do have some others

How'd you access that post?

[stlrj]

Bill,

Do you have the flow rates for Bosch # 0 280 150 158 @ 300kPa?

I did a search on injector flow that took me to this post. A great tool for researching technical data that cannot be found anywhere else.

Joe

[Bill Verburg]

Sorry, no info on that one.

[CamB]

I had Carrera injectors measured at ~230cc at 300kpa. Not certain which ones they were, but I am reasonably confident they were 158s. They were having trouble supporting 250hp on my engine without excessive fuel pressure, so I stumped up for 803 (944 Turbo) injectors.

I gave the part number you list a quick search and came up with this (extensive) list. Note that there is some variance in the test pressure and that some (eg the 158s) don't have a test pressure.

http://www.telusplanet.net/~chichm/tech/injectors.pdf

My 803s tested around 330cc at 300 kpa, for reference.

[Bill Verburg]

My listing for the 944t is
Bosch 0 280 150 811 298cc/min 29.2lbs/hr 59.6est hp ea 350kpa test pressure

don't know what year

this one might be of interest to someone
Bosch R Sport
Bosch R 280 410 144 434cc/min 42.5lbs/hr 86.8est hp ea 300kpa test pressure

[stlrj]

I found that LT1 Multec injectors PN 1709004 with a flow rate of 24 lbs @ 3 bar (43.5 psi) work very will on my 86 3.2 in case anyone is interested.

They seem to enhance performance all around particularly, low end and result in a very smooth idle too.

Cheers,

Joe

[Rot 911]

Originally posted by stlrj
I found that LT1 Multec injectors PN 1709004 with a flow rate of 24 lbs @ 3 bar (43.5 psi) work very will on my 86 3.2 in case anyone is interested.

They seem to enhance performance all around particularly, low end and result in a very smooth idle too.

Cheers,

Joe

Are you talking like Corvette LT1???? If so how does the cost compare to the Bosch injectors?

[stlrj]

These Corvette injectors are the ones I'm using:

http://cgi.ebay.com/ebaymotors/ws/eBayISAPI.dll?ViewItem&item=1854761238

I suspect the 28 lb injectors would be even better. The reason I feel this way is because our stock 3.2 injectors which are rated at 22lbs are most likely rated at stock Carrera fuel pressure of 36psi which is quite a bit lower than the standard 43.5psi that the LT1 injectors are rated, so as soon as I can get a hold of some I'll let you know.

Here's a set that I've been considering:


http://cgi.ebay.com/ebaymotors/ws/eBayISAPI.dll?ViewItem&item=1853581359

or

http://cgi.ebay.com/ebaymotors/ws/eBayISAPI.dll?ViewItem&item=1853829366

Here's a picture of a Bosch and Multec injector side by side:

http://chevythunder.com/fuel%20injection%20mech.%20pg%20B1.htm



Cheers,

Joe