injectors

[tickle]

can anyone tell me if 1.6 m40 injectors are the same as 1.8 m10 items, i have a full m40 injection unit and a couple need replacing on the m10.

from what ive seen in parts catalogues they are the same, and they look the same, but i cant be sure.

i also heard that the 1.6's where the same as the 1.8's on m40's. surely if this is the case and they fit in i can make it work by adjusting at the airflow meter to compensate for fueling differences?

any help well appreciated

[Widge]

Ant will, know, he'll be along in a minute

[tickle]

cheers mate

[Widge]

Don't think ajusting the AFM would do that much, you'd have to ajust the FPR wouldn't you?

[tickle]

is that the fuel pressure regulator, i take you mean id have to resore the correct pressure for the m40 injectors?

[gcorky]

may look the same but if you can put up the numbers of the injectors 0280 150 *** for example.a lot of injectors look the same but are so very different!

need same impedance ,and op pressure etc

[gcorky]

http://users.erols.com/srweiss/tableifc.htm

check this table ,youll see what i mean

[Widge]

are they the same part number on the ETK?

[tickle]

the resistance ratings quoted by haynes are 14.5 - 17.5 ohms for all engines

same again for fuel pressure checks, pump pressure 0.1-0.3 bars. fuel system pressure m10 2.5-3.0 bars. m40 3.0 +/- 0.06 bars

surely if i change the reg aswell?

[Widge]

Yeah but the resistance could be the same and the pressure the same, but one may be slightly larger than the other, so the pressure would need dropping if the injector was going to be used in the smaller engine, or the duration changing, which is an ECU thing, so not easy.

[Widge]

13641734776 M40
13641706058 M10

Different part numbers I'm afraid, although thats not conclusive.

[tickle]

i take it there will be some kind of part number on the injectors, there is no part numbers in etk!

[gcorky]

thats what i beleive widge ,different flow rates,may well be high impedance and work at 3 bar but what is the flow -get the original bosch numbers and check,

[gcorky]

i take it there will be some kind of part number on the injectors, there is no part numbers in etk!

yup theres a number such as 0280 150 415 on the plastic body embossed onto injector

[tickle]

where can i get the bosch numbers from?

[Widge]

What monster injectors are you going to be using on your machine Graham?

[tickle]

im a step behind with the posts, ill go and check the numbers, ill have to phone my mate to get them of the m40 as they are in his garage,

back in 5

[gcorky]

stock m20 2.5 are 17 lbers i believe,im fitting the yanky ford race type 42lb ers ,

[gcorky]

bit off topic Widge,u thinkin of ms-shown a bit of interest ?

[Widge]

Yeah maybe in 6-12 months, Im thinking of eith er making a 2.7 over the summer. Or making a compound charged 2ltr M10 to go in my kit car, which I still haven't finished after 6 years. Either way I'd want MS.

Lets see if he comes back with the Bosch numbers off the injectors. Is there a bosch injector spec sheet on the net?

[gcorky]

spec sheet in my link above m8

[Widge]

Oh yeah, oops

[tickle]

0280 150 715- m40
0280 150 704 - m10

oh well!

don't suppose you could help me out with something else, im looking at modding the m10 once running well and could do wth some pointers, ive heard about conerting them to 2.2, and would like to try and work my way up to it, what hardware is needed for this? any other reccomendation welcome

[gcorky]

the m10 actually flow more than the m40 injectors so really no point putting them in.

[gcorky]

re upgrade check this guy out:
http://www.e30zone.co.uk/modules.php?na ... hlight=m10

[tickle]

nice one for that mate, well appreciated

[Widge]

Think you need a 2002 2ltr block and crank with oversize pistons to got 2.2 apart from that I don't know. Theres a guy on here with a 2.1 I think?

[tickle]

2ltr is easy is it? do you know anything of twin cam heads at all?

[gcorky]

2ltr is easy is it? do you know anything of twin cam heads at all?

ask me one on sport ,twin cam heads and m10-i know nothing

[Widge]

Well if yo do that you might as well start with a 318is engine, it'll no longer be an M10. 2 ltr is east, it's the engine in the 2002, you just need to convert it to electronic fuel injection, from carbs, 2002, or mech injection 2002tii.

[tickle]

thanks alot for the help im still new to bmw's so sorry if ive been a bit frustrating,

[Widge]

ask me one on sport ,twin cam heads and m10-i know nothing

Who won the south african Drands Prix in 1972?