E30 Zone

Sorry if this has been asked a hundred times.

would it benefit me by getting my injectors cleaned or changed for new ones, and if so what would the Gaines be would it make a 325i sport a faction better on fuel.

i will be very grateful for your input on this.


thanks

If the injectors are untouched since the car was built, then they are almost certainly long overdue for a recon.
As with most things on an E30, much more gains per £ are to be had by getting the thing running as BMW intended, than by fitting aftermarket 'tuning' parts!

Thanks Brian, again your info will most definitely be taken on board i will be getting this done now has i have no clue off ever been done.


i`m now looking for a good place to get them serviced so if anyone knows of a company please let me know.

I'd expect new injectors will cost a lot more than having the existing ones cleaned too.

I have read many times that the newer type of injectors are the best way to go.... Apparently they are less clicky and they now spray out of 4 small holes which atomise the fuel better then one larger hole.... The benefit of this is better economy..

Can anyone confirm this?

I too would really like to know this as its been something I have been thinking about.

Mike

The newer Bosch design 3 injectors are a good way to go. See here for details:

http://www.fiveomotorsport.com/Injector_SetsBMW.asp

But, as Brian said, getting your standard 20 year old units refurbished will make a great difference. ANd if you are going to mod your car, again as Brian said, get it running tip-top first!

As anyone done an upgrade...there is a guy on ebay who says he got 12hp out of 19lb ford munstag injectors which work really well with the m20, he says they have been cleaned with new o`rings.

Is this a good upgrade or shell i just stay with oem.

The injectors look reasonably priced - but what do they mean by "no core"?
http://injectortune.co.uk/Injector_Cleaning.html
These guys will strip clean and test for £15 per injector. Has anyone used them?

To be honest, he probably got an improvement simply by replacing shagged units with nicely rebuilt/refurbished ones. You would really want mapping done to take advantage of larger injectors. And on a standard motor 19 pounders are a bit of overkill. You just don't need them. Get your OEM units refurbed. It's the best bang for buck option. Unless you want to spring for new OEM replacements of a newer design.

The injectors look reasonably priced - but what do they mean by "no core"?
http://injectortune.co.uk/Injector_Cleaning.html
These guys will strip clean and test for £15 per injector. Has anyone used them?

had a pm from a guy thats used them, said he could get them done for £12.50 per injector so i`ll go through him, i`m going to buy another set so i can still run my car while they are being cleaned

i`m going to stay with the OEM ones.

Good choice, mate!

It'll make a great difference.

Thanks AlpinaAde

have you had this done yourself ???

Nope. Not in the strictest sense. My car goes in on the 23rd of this month for a top end "tweaking" and I'll be running rebuilt Bosch 714 injectors, though I will get my OEMs cleaned up to keep spare. Mind you, the engine will end up being relatively well worked and the ECU mapped to make the best of all the work done.

what are the stardard oem injectors for a m20b25, you say your going to put in 714`s what are they from ?? also is that an upgrade for yeah.

Standard E30 325i injectors are part number 0-280-150-715 running at 14.5 lbs/hr; "714s" are part number 0-280-150-714 and were used on the M42B18 and M30B35. They are rated at nigh on 19lb/hr. So, a bit of an upgrade...and if I chose to do a fresh bottom end next year (I love the thought of a 2.9-3.1 litre 325i) then I'll be set!

Ade whats your car fella.....? 318is or a 325 the reason i ask is that you talk as you have a 325 but in your last comment your talking about m42 engines ^^^ or are you saying the m42 injectors are an upgrade for the m20.

am i confusing myself fella

there are the M50 2.5 injectors as well which flw at about 17lb and have 4 hole pintles

My injectors have be squirting away untouched for the past 21 years and they are quite noisy now - easily the noisiest bit of the engine. I accidentally acquired another set a short while ago so I think I'll send them off to be reconned and fit those. I can then send my original ones off so I've got a spare set in gwo.

Dave welcome to the party, do you have the m50 injectors in a m20 or is it just something you know.

Baz666 wrote:Ade whats your car fella.....? 318is or a 325 the reason i ask is that you talk as you have a 325 but in your last comment your talking about m42 engines ^^^ or are you saying the m42 injectors are an upgrade for the m20.

am i confusing myself fella

325i is what I've got but the injectors I speak of were used in both the M42 1.8 and M30 3.5. The 325i stockies were used in even more different engines!

ok then i`m back on line now so you are going to run the 714`s in your m20 yeah. or when you do your engine change.

DaveD wrote:there are the M50 2.5 injectors as well which flw at about 17lb and have 4 hole pintles

Indeed, yes. A lot of people like 'em. Different resistance to the stockies ~ but it's no real bother ~ but sizing is cool. I chose the 714s because size and resistance (15.9ohms) are spot on.

so which ever i choose to use the m50 or the m42 ones will the ecu still have to be remapped.

Baz666 wrote:ok then i`m back on line now so you are going to run the 714`s in your m20 yeah. or when you do your engine change.

Oh, I'll bung in 'em now and organize some dyno time in the near future. The thing is, all I have to do is plug a laptop in and the dyno guy can simply play with the numbers. I don't run a standard ECU setup.

Baz666 wrote:so which ever i choose to use the m50 or the m42 ones will the ecu still have to be remapped.

Not necessarily ~ but if you want to see the best out of uprated injectors you do have to tell the car exactly what it is seeing.

That's why I reckon stick with OEMs all nice and fresh. You will see a benefit.

Great that's fine Oem for me then just got a set of 6 from Spadge so should be here tomorrow or Wednesday

Baz666 wrote:Dave welcome to the party, do you have the m50 injectors in a m20 or is it just something you know.

yes ...but I have a lambda sensor so the flow is regulated...and have no problems

there have been lots of threads before

Jut had a quick look on ebay, Would something like this be suitable?

http://cgi.ebay.co.uk/BMW-328i-325i-525 ... 19b75a28b2

get the part no and check using this site

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

JasonR wrote:Jut had a quick look on ebay, Would something like this be suitable?

http://cgi.ebay.co.uk/BMW-328i-325i-525 ... 19b75a28b2

From the ad: " PART:0280150715"

That's the part number for the standard OEM injector for the E30 325i.

JasonR wrote:Jut had a quick look on ebay, Would something like this be suitable?

http://cgi.ebay.co.uk/BMW-328i-325i-525 ... 19b75a28b2

May be wrong, but I'm not entirely convinced by this advert!
No mention of any new parts - just selected second hand bits, and no mention of balancing.

He was no help either when i emailed him to ask the same thing Brain.

http://stores.ebay.co.uk/The-Engine-Tuning-Shop

try these they have a video of their system, he quoted me £82 for 6 injectors,

Morat wrote:but what do they mean by "no core"?

Is this some type of exchange charge?
Further down in the ad you see comments like "BRAND New Set
No core charge" and "plus $60 refundable core chg. "

Also, from the five-o site, this could be a cause for concern.
"This page was last updated: September 27, 2008".
Hmm.

Brianmoooore wrote:and no mention of balancing.

Question for you, Mr. Moooore.
Will the injectors need balancing if they've been reconditioned/overhauled, or am I mistaken in thinking that once the work has been done they're effectively identical?