Aurel`s engine rebuild thread

[Aurel]

Hi Mike,

I ran my shop vacuum in the exhaust manifolds to suck up any possible debris. It looked as clean as can be...But you`re right, point well taken.

Aurel

[Aurel]

I was looking for a used fan housing since mine is cracked. But I discovered that the 225 mm one that I have is a lot cheaper than a 245 mm. So I ordered a brand new one from our host ($246 versus $649 for a 245 mm). That and the larger intake ports are some of the sweet specificities of the 78 SC.

Aurel

[Aurel]

Damn, I am back to square one; it was too nice to be true:

Unfortunately, we recently discovered that one or more of the parts you ordered are No Longer Available (NLA). These are: OEM-93010600500 Fan housing Brand: Genuine Porsche***NLA

Still looking for a 225mm fan housing then...

Aurel

[OldTee]

Go used. Parts Heaven, DC Automotive, others.

[OldTee]

On ebay. Check here. http://cgi.ebay.com/ebaymotors/Porsche-911-Red-Engine-Fan-Shroud-Cover-911S-RS_W0QQitemZ200210231189QQcmdZViewItem?hash=item20 0210231189

[Aurel]

That I have. I put a bid on this housing, though:
http://cgi.ebay.com/ebaymotors/Porsche-911-cooling-fan-part-no-reserve_W0QQcmdZViewItemQQcategoryZ34201QQihZ019QQ itemZ290216711347QQrdZ1QQsspagenameZWDVW
It looks terrible, but if I get it for cheap, I will sandblast it.

Aurel

[OldTee]

Senior moment. Sorry.

[OldTee]

OK! look here. http://cgi.ebay.com/ebaymotors/Porsche-911-alternator-fan-housing-engine-motor_W0QQitemZ150229083975QQcmdZViewItem?hash=ite m150229083975

[Aurel]

I saw that one, but I already made a deal with this pelican member:

930 fan housing

I know the 930.106.102.0R can replace my 930.106.101.0R. It looks in very good shape,
I hope my problem is solved.

Aurel

[Aurel]

Okay, now that my fan problems are solved (details: 226 mm fan in 245 mm housing ), I can finally report some progress:



The CIS goes back on tomorrow, but I am wondering if I should replace hoses on it , and what other maintenance I could do on it while all is accessible?

One more thing, I can`t remember what the purpose of these two brackets was...any idea?



Aurel

[911 tweaks]

those brackets are to facilitate mounting the heater blower motor a/o its hoses in the engine bay.
If you do a parts schematic looking at the heater blower motor in the engine bay you'll see them.

Keep up the great work amd posting on your progress.

Bob

[Aurel]

Cleaning up the CIS system, the injectors and intake pipes are a bit dirty. Is it okay to spray them with brake cleaner?

Aurel

[efhughes3]

I'd send your injectors out for cleaning, testing. You'd be surprized how dirty they are.

[Aurel]

Originally Posted by efhughes3

I'd send your injectors out for cleaning, testing. You'd be surprized how dirty they are.

Yup, those look nasty! I am going to take them to my lab on monday and give them a good ultrasonic bath of propanol. One of the sleeves came out and is cracked. Gotta order a new one too.



Aurel

[Aurel]

Progress of the day:

Aurel

[MatthewBrum]

I cleaned my injectors by using a rubber hose about a foot long clamped to the threaded part of the injector. I then set my compressor to about 60 psig and used a rubber tip air nozzle to clean the injectors. You can fill the hose with what ever cleaner you want and view the spray pattern. I have used ultrasonic cleaners in the past and have not been happy with the results.

[Aurel]

Originally Posted by MatthewBrum

I cleaned my injectors by using a rubber hose about a foot long clamped to the threaded part of the injector. I then set my compressor to about 60 psig and used a rubber tip air nozzle to clean the injectors. You can fill the hose with what ever cleaner you want and view the spray pattern. I have used ultrasonic cleaners in the past and have not been happy with the results.

Sounds good, I can do that, but...
I am getting confused about these injectors: are they purely mechanical, or do they need electrical pulse to open? On the other hand, I don`t see where I would connect wires on them, so they look only mechanical to me. Someone please enlighten me on the 3.0 CIS injectors .

Aurel

[1982911SCTarga]

The CIS injectors are entirely mechanical. I used the same technique to clean mine as Matthew. I also figured out how to backflush them (but I question whether it's worthwhile).

Brian

[Aurel]

Here are my injectors after ultrasonic bath of propanol, then trichloroethylene, then methanol flush with compressed air. This was the highlight of my working day in the chemistry lab . All had a good spray. Thay can`t be worse now than they were before...

Aurel

[304065]

How nice of the university to give you that equipment to use! The injectors look great. How is the spray pattern?