removing plenem for first time. - ZR-1 Net Registry Forums

1720 · 07-27-2007

im changing all my injectors,coil packs and wires,is there anything else i should do while the things apart?pcv valves are ordered aswell.
1991 zr1.
the car has no real drivability problems,aside from a few bad injector.
any advice would be great!!im getting her ready for aug 24
Adam

tf95ZR1 · 07-27-2007

Hey Adam!
Good luck and take your time. Sucks to have to backtrack if you forgot something.
These sites are very helpful:

http://www.pnwzr1.net/PNWZR1.htm

and

http://www.bcvettes.org/

look up LT5 teardown and how to.

You might want to consider replacing the vacuum hoses under the plenum.
Kurt White sells a kit- not cheap but all there.

http://www.whiteracingproducts.com/

The service manual is also a must.

Good luck,
Ted Feder

jonszr1 · 07-27-2007

just to give you options on the vaccume /pvc valves. the one kurt sell go for 25 ea for atotal of 50$ 2 elbows . i went down to napa and found 1 water hose with 2 bends THE right size for 12 for both as i used 1 hose and cut the 2 bend out of it. curt hoses are factory correct but i dont have 40 extra bucks to through away. just to give you the choice / you should also retorq the inj housings and the breather box(the thing that the vaccume hoses are connected.. id yank the starter and clean the drain for the valley .Ill bet its plugged. main thing is take your time its really not very hard at all .if ya get6 stuck i know we will help

8upZR1 · 07-28-2007

While your under there you should check for loose bolts. You may be very surprised, I know I was. For some reason I have found dozens of loose or missing bolts on my LT5. Mostly in the oil pan and crank breather assembly under the plenum.

Aurora40 · 07-28-2007

I'd say drain the coolant and change it. Easier and more preventative than sopping coolant out of the injector housing air passages.

07-27-2007	#1
1720 Join Date: Jul 2007 Location: toronto Posts: 12	removing plenem for first time. im changing all my injectors,coil packs and wires,is there anything else i should do while the things apart?pcv valves are ordered aswell. 1991 zr1. the car has no real drivability problems,aside from a few bad injector. any advice would be great!!im getting her ready for aug 24 Adam __________________ 1991 #1720 white on black,4:10,headers,b&b tri-flow,fidanza flywheel,haibeck chip, 1972 rag,ontario orange,4spd.in the process of a full body off resto.

07-27-2007	#2
tf95ZR1 Join Date: Aug 2005 Location: Northridge, CA Posts: 1,445	Re: removing plenem for first time. Hey Adam! Good luck and take your time. Sucks to have to backtrack if you forgot something. These sites are very helpful: http://www.pnwzr1.net/PNWZR1.htm and http://www.bcvettes.org/ look up LT5 teardown and how to. You might want to consider replacing the vacuum hoses under the plenum. Kurt White sells a kit- not cheap but all there. http://www.whiteracingproducts.com/ The service manual is also a must. Good luck, Ted Feder Last edited by tf95ZR1; 07-27-2007 at 04:18 PM.

07-27-2007	#3
jonszr1 Join Date: Sep 2006 Location: lone pine and mammoth lakes Posts: 1,407	Re: removing plenem for first time. just to give you options on the vaccume /pvc valves. the one kurt sell go for 25 ea for atotal of 50$ 2 elbows . i went down to napa and found 1 water hose with 2 bends THE right size for 12 for both as i used 1 hose and cut the 2 bend out of it. curt hoses are factory correct but i dont have 40 extra bucks to through away. just to give you the choice / you should also retorq the inj housings and the breather box(the thing that the vaccume hoses are connected.. id yank the starter and clean the drain for the valley .Ill bet its plugged. main thing is take your time its really not very hard at all .if ya get6 stuck i know we will help

07-28-2007	#4
8upZR1 Join Date: Jun 2006 Location: Thunderbolt, Ga. Posts: 253	Re: removing plenem for first time. While your under there you should check for loose bolts. You may be very surprised, I know I was. For some reason I have found dozens of loose or missing bolts on my LT5. Mostly in the oil pan and crank breather assembly under the plenum. __________________ IT IS THE FATE OF THE INNOCENT TO MEET WITH DEATH!!!

07-28-2007	#5
Aurora40 Join Date: May 2005 Location: Leesburg, VA Posts: 2,713	Re: removing plenem for first time. I'd say drain the coolant and change it. Easier and more preventative than sopping coolant out of the injector housing air passages. __________________ Bob Saveland Former owner of #2517 [IMG]http://a.random-image.net/aurora40/vette.jpg[/img]