injectors

Hi all,

does anyone know of a resource where the part number of bosch injectors can be compared to give the resistance and flow rates?

regards,

Rohan

Rohan,
PM sent
However the D-jet type injector only seems to of come in one "size" flow rate and is 2.2 ohms
Most modern Bosch injetctors come in the 14 - 16ohm range and will not work with a D-jet ECU without extensive electronic modifications.

2 physical configurations, Barb or clip connection to fuel rail

Fuelling rates (cc/min or lbs/hr) are colour coded by bosch:

Ranging from Grey through to Gold top bodies
However for a NA engine like a 3.0 or 3.5 6 cylinder BMW engine Yellow top injectors are fine.
For racing/modified engines you could use Green which is what a lot of the race rally crowd use. (typical example being Ford Sierra Cosworth)

Most Japanese injectors are Bosch clones but have different fittings and electrical characteristics / plugs

Porsche got Bosch to make bespoke injectors for them = expensive!

Malc

Hey Malc, thanks for the info, the reason I ask is that when the yellow csl was being restored the engine sat for a long time and the injectors were found to be defunct. The guy setting the engine up was a jaguar specialist as well as working for jaymic and he had six new bosch injectors that he thought would do. He said they were for a jag.

He checked the flow and resistance and said they would work.

They seem to be fine. The resistance is spot on though they are green top rather than blue.

Regards,

Rohan

In an attempt to improve the performance and hopefully the fuel economy i sent my injectors off for some refurbishment a couple of weeks ago - they came back 2 days later cleaned nicely and a report. at best i got an 8% increase in perfomance from 1 injecctor - at worst nil % - not bad after having stayed put for the last 30 years but not good enough to have felt i got value for money.

trouble is this week that after refitting 1 injector is leaking fuel from the crimped hose and another firing constantly - both requiring replacement.

i spoke to the firm that did it in nottingham uk and they couldn't care less - they took it from my credit card prior to sending them back to me and now won't refund. no big deal but it's left me with a bit of a sour taste.

so a costly excersise all around (especially as i had them removed and replaced at extra cost) with little benefit.

They seem to be fine. The resistance is spot on though they are green top rather than blue.

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Glad that was of some use - be interested to know which Jag they came out of. (XJ6 4.2 or Jag V12 at a guess going by the injector colour coding) Do they have D (small) or L type (large) connectors?
I suspect they could be Lucas injectors as I know they got into injection systems and many 1980's - 1990's UK cars have a mix and match of Lucas and Bosch EFI bits
Must of been a licence agreement in there somewhere. Kind of ruined the Lucas "Prince of Darkness" reputation being relatively reliable :wink:
Malc

injector flow rates / bosch / two documents

Rohan,

I spent a lot of time researching flow rates from Bosch when changing the cam and injectors for the 3.8CSi. As a result, I have two data tables (MS Word) that detail the popular Bosch injectors flow rates, part nos. and application(s). If you are interested (or anyone else) email me and I will send you both tables.
Best,
Paul Cain

Paul did send me the table referred to above but I have managed to mislay it!

It seem 043 are the correct injectors for the 3.0 but 036 work also. What about 016?

Many thanks,

Rohan

Hi Tochi,

many thanks. I hadn't seen those sites. Both of them have very scant info on the 016 injector however? Any ideas?

Regards,

Rohan

30csl said:

Paul did send me the table referred to above but I have managed to mislay it!

It seem 043 are the correct injectors for the 3.0 but 036 work also. What about 016?

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Try these: http://users.erols.com/srweiss/tableifc.htm#BOSCH
http://autospeed.com/cms/title_Injector-Flows/A_0102/article.html

Here is another that offers more detail about "016" (less than 036) 380cc/min vs. 454 cc/min: http://webcache.googleusercontent.c...016&cd=9&hl=en&ct=clnk&gl=us&client=firefox-a

Hi Tochi, thats a brilliant site, the last one.

My car currently has green topped injectors 0280150035

Perhaps I have found the reason why it is running out of power under heavy load?? These flow 380 vs 454cc/min that the 043 injector does??

Regards,

Rohan

Before condemning the injectors for your high rev woes, make sure to check the fuel pressure at the injectors and whether that pressure is consistent at the higher rev ranges. If not, check the regulator (they can go bad or out of adjustment) and then the fuel filter(s), lines and the pump. Although recommended pressure is normally in the 30 lb/in2 range, it is not uncommon for "tuners" to opt for other pressures by adjusting the fuel pressure regulator.

Hi Tochi,

I don't think they are totally to blame but the difference in flow rates seems big enough that it must have been hard to supply enough fuel?

I checked the pressure before having changed the filter etc and it stayed fairly constanrt at c 30 even when rough running.

I will change the injectors for 043/036ss with some spares I have anyway to try and make everything as it should be.

Thanks for your help,

Rohan