Mrmerlin

I got some time to fit my new 4 hole injectors to my 1985 Euro 16V 5 speed.

It took a little bit more time than I expected .

I got one of the first sets or Greg Browns injector adapters and clips.
These little parts are like jewelry, sorry for not posting a better picture of them.

I got the injectors from Roger, these are 24lb hi impedance 4 hole injectors.

NOTE Before you take this job on you should have on hand a new set of injector body hold down rubbers,
these fit to the body of the injector and permit the metal bracket to press the injector into the manifold.

Your old ones will probably crack if you try to remove them from your old injectors.

The next thing you will need is new fuel line.

I used a FI clamp to secure the line to the Greg Brown adapter caps and went with the simple push on for the rails,
it takes a bit of doing to press that line onto the rails.

There is also a modification that must be done to the pintle caps prior to installing the injectors.
The rim of the hats must be removed so the lower O ring seal fully seats into the manifold.

I used a soldering gun with a cutting flange it takes two revolutions around to melt the plastic ,
then bend it, it comes off pretty easy.
Then with a fresh razor blade carefully cut the plastic off the caps ,
be very careful not to damage the O ring while trimming as you can cut the O ring.

Once the pintle caps are trimmed test fit the injector into your manifold and make sure the bracket fits properly.

I also used Dow Corning 111 on the O rings,
this makes it easy to press the injectors into the caps and the manifold.

I added some Deoxit to all of the injector leads.

Throttle response is quicker,
the miss I was chasing has left,
the engine sounds more potent via the exhaust at idle.

I now have to be more careful to not break the rear end loose as its quite easy to start the rear drifting easily,
I can also spin the tires with aggressive pedal,
it didnt have this kind of power before.

All in all I give this a two thumbs up.
Well worth the price of admission, now for an X pipe.

Thanks Greg and Roger for the nice performance upgrade.

John Speake

Thanks Stan, that's very helpful. I have all the parts to do this change. I had forgotten about the mod to the pintle cap !

Mrmerlin

John I think that you may be able to source different style pintle caps without the rim,
but the 4 hole caps may have a different inner mating surface to the tip.
This was the easiest way to mod the part so it could be installed
I would not recommend that the 4 hole injectors be installed without a pintle cap, as the 4 hole cover may come loose

EMan 928

Thanks for posting this, Stan. I was thinking of getting this for my 85 Euro. I wonder if the kit Greg is selling for $575 takes care of the extra steps you had to do to complete the conversion.

SMTCapeCod

Interesting, this is the first I recall reading about the pintle cap mod. Is that specific to the non-H ljet configuration?

Bummer, I had been running the blue injectors for about 2 yrs- unmodded caps!

I looked at some of the online measured ratings for flow, and found some for the blue injectors were higher +/- 265lbs at 3 bar. I just swapped them out after sourcing some of the Holden units. Car feels more responsive-- but that could be do to other affects of addressing some vacuum leaks and questionable plug wires done at the same time.

So, now wondering whether you recommend R&R to check/modify/remove pintle caps on the red injectors in 86.5?
http://www.fiveomotorsport.com/catal...nozzle_600.jpg
http://www.fiveomotorsport.com/catal...550-4d_600.jpg

John Speake

Thanks Stan, I think I will do the modification you did. I hope to do the changeover to the new injectors this winter.

Mrmerlin

SMT these injectors are being used for the 16V engines so the pintle caps as they are supplied must be cut down to allow full seating of the lower O rings.
Your car is a 32V so they will not need modding

SMTCapeCod

Thanks, Stan!

Looks like I still loose a few mm projection just comparing between the unmodded blue injectors and the reds.

Ah well, working fine, leave well enough alone for the time being!

BRB-83-911SC

Stan, can you describe the miss you were experiencing in more detail (idle, low rpm, high rpm, under load, no load, random intervals or rhythmic, etc.)?

Wondering if similar to the random misfire at idle and low rpm I have been chasing on my 84 Euro.

TIA.

Mrmerlin

my miss was at idle and low RPM it went away or I didnt feel it after about 1000 RPM and higher.
I can now turn the idle down to 400 RPM and its a smooth as silk.

From what i found,
the original Euro injectors have a box shaped sealing ring and one injector on either bank had an edge that wasn't sealed properly, as evidenced by some dirt in the bottom of the injector seat.

The new injectors have O rings and seal perfectly.
if you do the swap make sure to get the injector body rubbers as you will need them on your new set to hold the injectors to the manifold

Wisconsin Joe

Can you please clarify "Injector Body Rubbers"?

Do you mean the o-rings? It doesn't sound like it.

Or do you mean the bigger ring that goes under the tear-drop shaped retainer?

BRB-83-911SC

Thanks.

John Speake

The bigger one under the holding bracket.

My car also had an intermittent misfire when I bought it 16 years ago. I replaced most of the ignition system which didn't fix the problem.
In desperation had the injectors ultrasonically cleaned. This cured the problem and the car much better.

Over the last few years the car is tending to flood on some cylinders after standing hot. So the injectors have started to leak.

Thanks to Greg's kit I'll be able to ditch these worn out, NLA injectors !

soontobered84

Stan,
IIRC, the length of hose required originally between fuel rail and injector is 50 mm. Is that length shortened with the kit? Or does the fuel rail just sit higher?

Mrmerlin

the fuel hose length will be reduced with the installation of Gregs adapter caps and the new injectors
It is approximately 13 to15 MM less but measure as some rail lines may sit higher, the rails are held by the dampers and FPR

Wisconsin Joe I am talking about the larger diameter rubbers that are put onto the injector body then the snap ring is installed these allow the metal hold down clamps to apply pressure to the injector to hold it into the manifold.

The original lower sealing O rings on the Euro injectors are box shaped,
if they dont fit perfectly then you can get an intake leak.

The new injectors have round O rings these seal better than the older style box shaped seals