Buick Fuel Injectors in 3.2

[DRACO A5OG]

Concours Guys, Close your Eyes

Yes, I pulled the trigger and purchased the Refurbed Bosch Fuel Injectors OEM Buick (0280 150 364). Sal was absolutely correct they fit perfectly and for extra measure the company double checked the flow on each before sending them out to me. I told them I am the Guinee Pig for your guys

Reason I changed them, I placed a DVM to the O2 Sensor, pulled the connectors off each one and #2 caused the idle to go richer then the rest so I suspected a bad injector.

It took only 1 hour and no engine drop. Started with driver side, you must disconnect the fuel line at the regulator and Y. Passenger side, I took Sal's advise and just loosened the modulator and rail harnesses, the rail lifted right up, Thanks Sal. (To control the fuel spilage, relieve pressure at the Test Port, don't lose the ball bearing seal)

The old ones were a PITA to remove and I had to use a screw driver to pry them out. Use the screw driver, take my word for it or my cracked knuckles on the first one I tried.

Once removed, the old ones were clean at the tips probably because of the SeaFoam I used, but the plastic tips were reddish brown in color and appeared to be varnished. (pics to follow) There were bunch of carbon deposit surrounding it.

The Buick Injectors are a PERFECT FIT. One must make certain the injectors sit up on the rails so the retaining clips will go on and snap in place.

While I was in there, I swapped out the piece of crap Bosch Platinum +4's with NGK Iridiums. This also allowed time for the spilled fuel to dry out.

Once I was convinced the spilled fuel was dry, I started her with only half of the NGK plugs installed the other bank had the old plugs. She did not turn over right away. It took three tries then Varoom. Nice and Steady. I had a big grin on my face

Checked for Fuel Leaks. GOOD TO GO

Installed the remaining NGKs. To my amazement, she started right up. I am not imagining this, the starter barely made a full revolution before she kicked in and with never before vigor. I was taken back by this because she used to take 3 revolutions before the starter would start the car.

It has been 3 days, and no leak, instant start ups, fantastic runs via throttle response, smooth idle. She even sounds better.

I do have on occassion trickle down on the RPM's where the O2 Sensor at stop would lean her out due to richness. But I suspect a fuel pressure issue. But the Fuel Injector with maybe help from the NGKs is keeping the trickle down to a minimum and only to 800RPMs . Prior to the swap out she would trickle down to 750 RPMs, a forced lean due to rich Air Fuel mixture at idle.

I will post pics of the old injectors but Sal has posted the Buick Injectors.

I am super pleased, Two Thumbs Up on the Buick Injectors aka BOSCH 364's.

Thanks again Sal!

[ischmitz]

cool - so is there a big fat price differential between the Porsche and the Buik injectors?

I know there was another thread about compatible injectors for the 3.2 - was is BMW. Not sure but I think that's what was tried and confirmed working.

Ingo

[rsscotty]

I don't understand how you can use a 270cc injector in a 3.2 engine????????????
It should be running very rich.
This is much larger than a stock 3.2 injector. I could not find a reference to see if is a low or high impedance injector.

[DRACO A5OG]

Refurbed 911 Injectors are $5.00 more if available but the company stated they are un-reliable and leak and stopped selling them.

On ly the tip is longer made of metal inverted cone, 24lbs., 2.4 ohms Low impedance per Sal. Sal actually found it to be 1/10th leaner compared to the 911 Fuel Injectors

Here is his research: http://forums.rennlist.com/rennforums/911-forum/448548-alternative-fuel-injectors-3-2l-carrera.html

[rsscotty]

OK Just basing my thoughts on the size difference between the injectors.
The 0280150364 is rated at 270cc the 0280150158 original 3.2 injector is 230.

I did a injector swap on a 964 engine to see if I could use 993 injectors. They were 45cc larger than the 964 injectors. The fuel mixture went 3 full A/F ratio points richer....so that is results from that test on the dyno. Ended up using 20cc larger injectors and a Split Second MAF system with laptop programable fuel curve.

[DRACO A5OG]

Sal did all the work and posted his findings and I confirmed that she ran leaner.

I read the specs as well and asked allot of questions but the flow test confirmed 24lb low impedance and 2.4 Ohms.

The physical outer appearance was identical except the metal tip.

[stlrj]

Thought the Buick injectors were high impedance?

[DRACO A5OG]

Nope, 24lb Low Impedance per Sal and company no relation

[Zeke]

I know you've been on this for some time. Thanks for being the Guinea pig.

[DRACO A5OG]

My Pleasure Milt, you and others before me have suffered, succeeded and contributed much more than me. This is my little contribution to a great community. But Sal aka Scarcellar gets all the credit for posting his detailed findings.

[SCWDP911]

Got to be that RI water... that Sal has always proven to be one smart cookie!

[DRACO A5OG]

Originally Posted by Shane Van Wey

Got to be that RI water... that Sal has always proved to be one smart cookie!

+1

[scarceller]

Guys,

Don't get to wrapped up in the flow rates posted! Here's why: many times you see a flow rate like 270cc for 364 injectors but here's the rub: you MUST know at what pressure they where tested. For instance that 270cc/min was at 3bar but at 2.5bar they would flow 230cc/min or so.

The bottom line is that the 364 injector was put on a test bench with the 158 stock one and they flowed within 2cc of each other, now note that even a set of 6 brand new 158s can differ by 2cc!

I then installed the 364 injectors and compared the AirFuelRatio of the 364s at WOT to the 158s at WOT and actually the 364s ran about 0.1 AFR leaner, no big deal a simple re-adust of the CO screw on the AFM and they where spot on. I have been running these in my car for about a year and they run Great!

I have tons of details on the work in another thread on this board, see here:
Alternative Fuel Injectors
then see post #206 for side by side WOT run results.

[Joe Bob]

And the price difference is?

[scarceller]

New 158 stock injectors are in the $120.00 each range.

The 364s can be had for about $25.00 each re-manufactured. With warranty. Sure they are not new but they are a fraction of the cost.

[MotoSook]

I tried looking for the 364's as a Buick part but only came up with the 360 as a Buick part.


The 364 is a BMW part from what I can tell.

Edit:

Found more info for the 364:

BMW 2.3l, 6-3.2l, 6-3.4l, Plymouth 4-2.2l, 4-2.5l, Pontiac 1.8l, Porsche 2.5l

[DRACO A5OG]

360's and 364's are the same except the tips

[scarceller]

I'm not sure what car the 364s are from but the part # is 0280 150 364 and those work just fine in the 84-89 3.2L Carrera.

Just do a google on 0280 150 364 and you'll find them for about $25.00 each.

[scarceller]

Originally Posted by DRACO A5OG

360's and 364's are the same except the tips

Correct, the 360 has plastic tip and 364 metal. I prefer the metal 364 tips.

[scarceller]

In total I have heard from about 5 folks (6 with me) using the 364s and they work great. Compared at $150/set for 364 to $720/set for 158s - you decide but for me the 364s are running just fine.