Should I send off my fuel injectors for cleaning?

[zbph10]

I'm in the process of a complete rebuild on my 87 3.2 and have taken apart the intake to clean and paint it.

Since the injectors are already out should I send them in to have them cleaned and checked out? Probably a no brainer but I'm curious what folks think.

Also who do I send them to and ~ cost?

Thanks
Brian

[dfink]

May I be the first to say yes if nothing else to make sure they aren't leaking. Mine started to leak after being dry during a rebuild. Also may I suggest WitchHunter since he gave some free advice that mine were shot so I will try to send him business.

edit witchhunter

[LakeCleElum]

Cost: I was quoted $15 each for my 73.5 Injectors....

[DUK]

Just had mine cleaned and flow checked and it cost $115 and included o-rings and pintle caps. BTW I had one with a bad pattern.

[Walter_Middie]

+1 for WitchHunter - quick turn around and fast shipping.

[SP2]

John Walker checked mine. He has a Bosch tester. I don't think it is quantitative. You just look for good spray pattern and fortunately mine were all ok. ps For all you locals, he does it super quick.

[88-diamondblue]

Had mine done at Cruizin Performance . Prices are $14.00 for flow testing, o-ring and pintle cap replacement. Mine came back looking like new and you get web access to the flow info.

[zbph10]

Thanks guys

[hcoles]

+1 Witchhunter - they figured out that the seal kits I bought were wrong and gave me the correct ones...

[kepperly]

just got mine back from Witch Hunter and they did a nice job.
Made it easy to balance the flow and end up with an even smoother running 911. As per Witch Hunter put the one with the most flow in cyl. #5 as it flow more air and get the hottest.

Keith Epperly
87 slant nose turbo look carrera cabriolet

[zbph10]

Thanks for the info, sent the injectors off this morning.

[Bearded Viking]

Please keep us posted on the results and turn around time.

[Determined]

Do it, cheap insurance. I just got my 3.2L Carrera injectors back from Florida, I had them completely reconditioned and balanced.

Regards,

Alex

[zbph10]

Injectors are shipping back to me tomorrow, 1 week turn around from Cruzin Performance. They were good guys to deal with.

Here are the results for my injectors from their website, looks like they were OK before the cleaning but much better after. Not sure how to quantify the numbers?

Date: 02-17-2007
Vehicle: 1987 Porsche 911
Model: 280 150 158
Injector serial #: 702171-702176
Preliminary Test Results
Test pressure = 43.5 psi Injector No.
1 2 3 4 5 6 7 8
Test 1. Injector Resistance 2.4 2.5 2.4 2.5 2.5 2.5 0 0
Test 2. Leak Down Test (Pass / Fail) P P P P P P
Test 3. Spray Pattern (Good / Fair / Poor) G G G G G G
Test 4. 60 Second Pulsed Flow Delivery (mL) 67 68 68 70 69 69 0 0
Test 5. 100mL Pulsed Volume 97 98 98 100 99 99 0 0
Test 6. 20 Second Static Flow (mL) 93 93 93 94 93 94 0 0
Test 7. 100mL Static Flow 99 99 99 100 99 100 0 0
Approximate pound-per-hour flow 23.86 23.86 23.86 24.12 23.86 24.12 0 0

Test Results After Service
Test pressure = 43.5 psi Injector No.
1 2 3 4 5 6 7 8
Test 1. Leak Down Test (Pass / Fail) P P P P P P
Test 2. Spray Pattern (Good / Fair / Poor) G G G G G G
Test 3. 60 Second Pulsed Flow Delivery (mL) 70 70 70 71 71 71 0 0
Test 4. 100mL Pulsed Volume 99 99 99 100 100 100 0 0
Test 5. 20 Second Static Flow (mL) 94 94 94 95 94 95 0 0
Test 6. 100mL Static Flow 99 99 99 100 99 100 0 0
Approximate pound-per-hour flow 24.12 24.12 24.12 24.37 24.12 24.37 0 0
Parts Replaced
Pintle Caps Seals O-Rings Screens Hoses Clips
6 0 12 6 0 0
Comments
Tests performed at 0.700 specific gravity.

[glenncof]

What is "pintle cap replacement" ? I thought they were serviced as a unit ?