My '90 ZR-1 project update thread - ZR-1 Net Registry Forums

bdw18_123 · 09-10-2009

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 · 09-10-2009

Plenum, throttle body & airhorn before

Plenum after

bdw18_123 · 09-10-2009

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 · 09-10-2009

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 · 09-10-2009

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

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

tccrab · 09-10-2009

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 · 09-10-2009

Quote:

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 · 09-10-2009

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 · 09-17-2009

Couple more before & after cleanup pics.

Before:

After:

bdw18_123 · 09-17-2009

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

After:

09-10-2009	#1
bdw18_123 Join Date: Apr 2009 Location: Prather, CA Posts: 809	My '90 ZR-1 project update thread 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 __________________ [IMG]http://i13.photobucket.com/albums/a292/bdw18_123/_zr1netforumsigphoto.jpg[/IMG][B] 1990 Corvette ZR-1 [/B][I] White/Flame Red, #2299, mostly stock, 144K miles.[/I] -Cams timed to the '93-'95 405HP LT5 stock timing. -IAT sensor relocated to below front bumper. -Haibeck hoops installed in airduct. -OBX cat-back exhaust. [COLOR=DarkRed][B](SOLD - December 2012 [/B][/COLOR][COLOR=DarkRed][B]:hello:)[/B][/COLOR] 1993 Corvette Coupe Black/Black, 6-speed (SOLD - October 2009 :hello:) Last edited by bdw18_123; 04-23-2010 at 10:13 PM.

09-10-2009	#2
bdw18_123 Join Date: Apr 2009 Location: Prather, CA Posts: 809	Re: My '90 ZR-1 project update thread Plenum, throttle body & airhorn before Plenum after __________________ [IMG]http://i13.photobucket.com/albums/a292/bdw18_123/_zr1netforumsigphoto.jpg[/IMG][B] 1990 Corvette ZR-1 [/B][I] White/Flame Red, #2299, mostly stock, 144K miles.[/I] -Cams timed to the '93-'95 405HP LT5 stock timing. -IAT sensor relocated to below front bumper. -Haibeck hoops installed in airduct. -OBX cat-back exhaust. [COLOR=DarkRed][B](SOLD - December 2012 [/B][/COLOR][COLOR=DarkRed][B]:hello:)[/B][/COLOR] 1993 Corvette Coupe Black/Black, 6-speed (SOLD - October 2009 :hello:) Last edited by bdw18_123; 04-24-2010 at 11:58 PM.

09-10-2009	#3
bdw18_123 Join Date: Apr 2009 Location: Prather, CA Posts: 809	Re: My '90 ZR-1 project update thread 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. __________________ [IMG]http://i13.photobucket.com/albums/a292/bdw18_123/_zr1netforumsigphoto.jpg[/IMG][B] 1990 Corvette ZR-1 [/B][I] White/Flame Red, #2299, mostly stock, 144K miles.[/I] -Cams timed to the '93-'95 405HP LT5 stock timing. -IAT sensor relocated to below front bumper. -Haibeck hoops installed in airduct. -OBX cat-back exhaust. [COLOR=DarkRed][B](SOLD - December 2012 [/B][/COLOR][COLOR=DarkRed][B]:hello:)[/B][/COLOR] 1993 Corvette Coupe Black/Black, 6-speed (SOLD - October 2009 :hello:) Last edited by bdw18_123; 09-10-2009 at 02:09 AM.

09-10-2009	#4
jonszr1 Join Date: Sep 2006 Location: lone pine and mammoth lakes Posts: 1,407	Re: My '90 ZR-1 project update thread nice work . did you have to put the heads back on it ? wasnt sure of the shape it was in when you got her ???

09-10-2009	#5
bdw18_123 Join Date: Apr 2009 Location: Prather, CA Posts: 809	Re: My '90 ZR-1 project update thread Jon, go to this link for the whole story from the beginning: http://www.zr1.net/forum/showthread....ight=bdw18_123 __________________ [IMG]http://i13.photobucket.com/albums/a292/bdw18_123/_zr1netforumsigphoto.jpg[/IMG][B] 1990 Corvette ZR-1 [/B][I] White/Flame Red, #2299, mostly stock, 144K miles.[/I] -Cams timed to the '93-'95 405HP LT5 stock timing. -IAT sensor relocated to below front bumper. -Haibeck hoops installed in airduct. -OBX cat-back exhaust. [COLOR=DarkRed][B](SOLD - December 2012 [/B][/COLOR][COLOR=DarkRed][B]:hello:)[/B][/COLOR] 1993 Corvette Coupe Black/Black, 6-speed (SOLD - October 2009 :hello:) Last edited by bdw18_123; 04-23-2010 at 09:51 PM.

09-10-2009	#6
tccrab Join Date: Oct 2004 Location: Folsom CA Posts: 1,643	Re: My '90 ZR-1 project update thread 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" __________________ TomC '90ZR1 #792 Honorary Pirate [B]If it ain't FUN, you're doing something terribly WRONG. [/B]

09-17-2009	#9
bdw18_123 Join Date: Apr 2009 Location: Prather, CA Posts: 809	Re: My '90 ZR-1 project update thread Couple more before & after cleanup pics. Before: After: __________________ [IMG]http://i13.photobucket.com/albums/a292/bdw18_123/_zr1netforumsigphoto.jpg[/IMG][B] 1990 Corvette ZR-1 [/B][I] White/Flame Red, #2299, mostly stock, 144K miles.[/I] -Cams timed to the '93-'95 405HP LT5 stock timing. -IAT sensor relocated to below front bumper. -Haibeck hoops installed in airduct. -OBX cat-back exhaust. [COLOR=DarkRed][B](SOLD - December 2012 [/B][/COLOR][COLOR=DarkRed][B]:hello:)[/B][/COLOR] 1993 Corvette Coupe Black/Black, 6-speed (SOLD - October 2009 :hello:)