1994 Zr-1 true barn find
#1
Racer
Thread Starter
1994 Zr-1 true barn find
just got this 94, parked 15 years. Going to clean the tank and change the oil and try to fire it up. I've restored and parted at least 100 C4s but never even touched a ZR-1. Any tips I need to know before trying to start this car?
thanks
thanks
#3
Instructor
1994 ZR1 true barn find
Hello,
Their are Texas folks I'm sure be glad to help out. Change the oil, Tranny fluid, rear end fluid, brake fluid, anti-freeze not the 20/20 mix or the pink stuff, flush with Di-water. As per the last post, go over to ZR1.net you'LL get lots of help.Manfred E..
91 #906
Their are Texas folks I'm sure be glad to help out. Change the oil, Tranny fluid, rear end fluid, brake fluid, anti-freeze not the 20/20 mix or the pink stuff, flush with Di-water. As per the last post, go over to ZR1.net you'LL get lots of help.Manfred E..
91 #906
#4
Drifting
Barn Find
Change the fuel filter
Drain, Flush & replace the coolant, use only the cheap, green stuff.
I have customers who found the fuel rails & injectors so gummed up from old fuel that replacement was necessary. You may be ahead of the game to go ahead & pull the plenum, for 2 reasons; (1) Very common to find mice have taken up residence under the plenum & have damaged the wiring & secondary port throttle vacuum system, and (2) you should remove all 16 of the fuel injectors & have them cleaned & flush the fuel rails.
All you will need for the plenum R&R is a set of plenum gaskets & a new set of O-rings for the injectors & the fuel feed & return block (located Rt-Rear of the plenum).
Remove all plugs squirt some Marvel Mystery Oil or diesel in each cylinder & turn the engine over completely a few times.
Do this & you will be less likely to have problems or damage the engine.
Google LT5 Gaskets to find everything you need.
The following users liked this post:
scarabexc (04-15-2018)
#5
Drifting
Very cool... how many miles on it?
Here’s a Haibeck article on exactly what your getting into. Starting a Z that’s been sitting a long time.
http://www.zr1specialist.com/HAT%20W...0Awakening.pdf
If you need gaskets and parts you will find everything here...
http://www.jerrysgaskets.com
Good luck.
H
Here’s a Haibeck article on exactly what your getting into. Starting a Z that’s been sitting a long time.
http://www.zr1specialist.com/HAT%20W...0Awakening.pdf
If you need gaskets and parts you will find everything here...
http://www.jerrysgaskets.com
Good luck.
H
Last edited by ccmano; 04-13-2018 at 06:29 PM.
The following users liked this post:
scarabexc (04-15-2018)
#7
Burning Brakes
#10
Tech Contributor
Barn Find
Like Jerry (A26B) suggests......the fuel rails will most likely be completely dried out and gummed up along with the Fuel Pressure Regulator ccmano has a Fuel Rail with Fuel Pressure Regulator for sale on the Registry. I would also assume the Fuel Injectors will need to be replaced as well as spark plugs.
When plugs are out I would inspect the cylinders and "squirt" something in (WD40 or oil of some sort) to coat the cylinder walls and rings before you attempt to start the engine. Oh ya....and new battery. The Preparation cited will require you to remove the Plenum and do a top end before you start the engine.
When you are ready....I would first crank the engine with plugs removed to get oil slowly pumped into the camshaft area. As Marc describes (see ccmano post above) I would pressurize the oil system to 30 psi before I crank the engine.
Click on Marc's Link (cited by ccmano above)..... The Great Awakening
But first......change ALL fluids LT5/ZR-1 Fluids
TOP END RESTORATIONS SUMMARY
Post 62 - 1990 (#2067) LT5 Top End Rebuild (C5 Z06./Wilwood Brakes, SW Headers, Aluminum Radiator)
Post 76 - 1991 (#1427) LT5 Rebuild (C5 Z06/Wilwood Brakes, SW Headers, Ron Davis Radiator)
Post 119 - 1990 (#3032) LT5 Top End Rebuild (Fluidyne Radiator)
Post 133 - 1990 (#0072) LT5 Top End Rebuild (Ron Davis Radiator)
Post 230 - 1995 (#0186) LT5 Specific Top End Rebuild (C5 Z06/Wilwood Brakes, Fluidyne Radiator)
Post 261 - 90’ (#8550) Corvette (L98) Modifications (SW Headers, Ron Davis Radiator)
Last edited by Dynomite; 04-14-2018 at 10:50 PM.
#11
Race Director
Member Since: Feb 2002
Location: Compound in the Grove, Ga.
Posts: 11,329
Received 910 Likes
on
583 Posts
2020 C3 of the Year Finalist - Unmodified
2019 C4 of Year Finalist (performance mods)
2018 C4 of Year Finalist
2015 C4 of the Year Finalist
St. Jude Donor '16
2020 C3 of the Year Finalist - Unmodified
Nice find. All I can add is Clean Clean Clean. Put it on stands remove all the inner wheel panels and spare tire carrier, cover the motor with a tarp and pressure wash with low presser.
Motor as you can see covered with a water proof tarp
Motor as you can see covered with a water proof tarp
Last edited by FASTAZU; 04-14-2018 at 05:58 PM.
#12
Melting Slicks
DO NOT
I Repeat
DO NOT
PRESSURE WASH THE LT5 ENGINE
Underneath the car, yes, suspension bits, yes, but if you pressure wash the engine, you might as well pressure wash the interior cabin of the car while you are at it.
It won't run afterward.
'Crabs
I Repeat
DO NOT
PRESSURE WASH THE LT5 ENGINE
Underneath the car, yes, suspension bits, yes, but if you pressure wash the engine, you might as well pressure wash the interior cabin of the car while you are at it.
It won't run afterward.
'Crabs
The following users liked this post:
scarabexc (04-15-2018)
#13
Race Director
Member Since: Feb 2002
Location: Compound in the Grove, Ga.
Posts: 11,329
Received 910 Likes
on
583 Posts
2020 C3 of the Year Finalist - Unmodified
2019 C4 of Year Finalist (performance mods)
2018 C4 of Year Finalist
2015 C4 of the Year Finalist
St. Jude Donor '16
2020 C3 of the Year Finalist - Unmodified
And stated so in my post!!
Last edited by FASTAZU; 04-14-2018 at 05:59 PM.
The following users liked this post:
jay1055 (04-15-2018)
#16
Tech Contributor
However.......after you have removed the Plenum leaving the Injectors in place before you replace them (Remove the Fuel Rail from the Injectors) and after you have removed Coils, Starter, and Vacuum System etc., you can pressure wash the valley especially before you remove the Injectors as this gets all the grime from around the Injectors before you remove them. Also, this can help get the Valley Drain cleared especially if you use a bit of air pressure from in front of Bell housing from underneath blowing upward the valley drain.
You can set aside the AC compressor without disconnecting. You can remove the Alternator.
I would not pressure wash the interior unless you have had a serious coolant leak inside on the carpet on the passenger side
Like Ted (Demps) suggests.......this could be fun
Last edited by Dynomite; 04-15-2018 at 12:25 AM.
The following users liked this post:
scarabexc (04-15-2018)
#19
Racer
Thread Starter
#20
Race Director
Member Since: Feb 2002
Location: Compound in the Grove, Ga.
Posts: 11,329
Received 910 Likes
on
583 Posts
2020 C3 of the Year Finalist - Unmodified
2019 C4 of Year Finalist (performance mods)
2018 C4 of Year Finalist
2015 C4 of the Year Finalist
St. Jude Donor '16
2020 C3 of the Year Finalist - Unmodified
Saw the pics of the clean up on FB looking good.