My '90 ZR-1 project update thread

[bdw18_123]

Thought I'd start a new thread and post updates and pictures as I progress. Go to this link to for the beginnings of this project:

http://www.zr1.net/forum/showthread....ight=bdw18_123


I'm still in the 'cleaning everything real good' stage, which is turning out to be a very large project just by itself. I just can't stand putting something back together dirty, even if it takes a lot of work to get it clean.

The previous owner replaced the fuel injectors, but I didn't know where he got them from. Then I happened to look in the bag of the old, original injectors and I found these:



Which was a pleasant surprise as I have heard nothing but glowing reviews about FIC, so I know the injectors are good quality.


Here are a few before and after clean-up pics:

Fuel injector rails & IH's before


Fuel injectors & rails after (also installed the new fuel pressure regulator, which came with the car)


IH assemblies after

[bdw18_123]

Plenum, throttle body & airhorn before


Plenum after

[bdw18_123]

Throttle body & airhorn after




Alternator before


Alternator after (I painted the aluminum case halves with paint that imitates new cast aluminum look, cleaned interior of alternator also)




The plenum, IH's & airhorn/throttle body cleaned up pretty good. There are some stains I can't get out and the top of the throttle body has an area where the coating is missing, but they look much better than before.

That's it for now.

[jonszr1]

nice work . did you have to put the heads back on it ? wasnt sure of the shape it was in when you got her ???

[bdw18_123]

Jon, go to this link for the whole story from the beginning:

http://www.zr1.net/forum/showthread....ight=bdw18_123

[tccrab]

Ben:

Looks like she's cleaning up really nice.


One small thing though...
There is a ring of special sealant called "DAG" around the blades of the throttle body that seals the blades and helps with the idle.
Hopefully, you accidentally didn't clean it off too...
http://www.zr1netregistry.com/forum/...32&postcount=9


TomC
"Crabs"

[bdw18_123]

Originally Posted by tccrab

Ben:

Looks like she's cleaning up really nice.


One small thing though...
There is a ring of special sealant called "DAG" around the blades of the throttle body that seals the blades and helps with the idle.
Hopefully, you accidentally didn't clean it off too...
http://www.zr1netregistry.com/forum/...32&postcount=9


TomC
"Crabs"

Hmmm... Thanks for the heads up on that, I had no idea about that stuff. There was a line of blackish stuff at the edges where the rod goes through the throttle body, but there wasn't much there. Is it supposed to go on all 3 throttle blades, or just the 2 big ones? Does it go on the blade itself or on the throttle bore walls? Can you still buy this "DAG" stuff somewhere or its equivalent?

[tccrab]

Ben:

I don't think it's something that you can buy at the local parts store, I've never needed it so I've never looked.
If you've cleaned the bores 'till they shine, then it's gone.
My thoughts would be to put it back together and if your idle is *way* high, then think about finding some or have the throttle body serviced by a pro.
I know that Marc Haibec offers a rebuild service, here's a write-up over on his website.
http://www.zr1specialist.com/HAT%20W...tle%20body.htm

TomC
"Crabs"

[bdw18_123]

Couple more before & after cleanup pics.

Before:


After:

[bdw18_123]

Before (it was actually much more oily/dirty, I wiped the worst off before this pic):




After: