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.

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

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?

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

Sorry, no info on that one.

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.

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

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?

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