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#1 |
![]() Join Date: Dec 2019
Location: st louis mo
Posts: 747
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going to remove my plenum for some secondairy repairs, if I cleen the drain hole well, put the car back together, can I then spray the engine and clean it without shorting the starter?
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#2 |
![]() Join Date: Dec 2014
Location: Long Island, NY
Posts: 295
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Many caution against this.
I wash once every spring, taking precautions... to cover the computer (ECM), both horns, take off the airbox, seal off the throttle body, make sure cowl drain ducts are clear, hood latch pockets have tiny drains that easily clog, wrap or remove secondary vaccum pump, airbag frame sensors can be taped off, disconnect battery, keep water away from alternator, starter etc. I spray Platinum Dawn soap or PurplePower dilute solution, then gently agitate with a wheel wooley or brush. The spray down is a gentle quick shot across the plenum, I mean like 1 second max on each side. I prefer using pressurized paint sprayer filled with water, but a garden hose fine mist works too. Spray down the rest of the engine, suspension with the wheels off. Important to blow off all excess standing water with compressed air nozzle, or leaf blower. $12 stylist sprayer, mist on Meguires HyperDressing or 303 protectant. Using a paintbrush, blend it all in till it looks nicey nice. I do not rush this cleaning procedure. It's my zen period, and I make sure to enjoy it, taking breaks, thinking it through, taking everybody's advice not to make any costly mistakes. Results are like showroom new, keeping in mind my cars are driven regularly. I wrap items in terrycloth towel, then plastic bag, use tape to hold... that way the towel will absorb any water that may penetrate.
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1990 ZR-1 #1587 1990 ZR-1 #1727 |
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#3 |
![]() Join Date: Jun 2006
Location: Sparks, NV
Posts: 2,852
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There is actually a factory bulletin from back in the day that had dealers drill a second larger drain hole at the back of the valley. The drain tube got clogged most of the time anyway.
That said, I still wouldn’t do it. Even with the larger hole it can’t drain fast enough to keep the starter electricals from getting soaked. And we know what a pain it is to have starter issues and have to pull the plenum to fix it. H ![]()
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90'ZR-1 #1461 Red/Black Ported Intake, Degreed Cams, OBX Headers & Exhaust, Fidanza FW, Secondary Delete, Custom tune, C6 GS Wheels. Sold 08 C6 Z51 Crystal Red Metallic Sold Vararam Intake, Tune, Sold 05 C6 Z51 Red/Black Sold 90'ZR-1 #1723 Black/Gray Sold but not forgotten 91' Z51 L98 White Vert. My First, you always remember your first. Sold. Last edited by Ccmano; 03-01-2020 at 11:54 AM. |
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#4 |
![]() Join Date: Dec 2014
Location: Long Island, NY
Posts: 295
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#1727 modified ...put another 13,000 miles on this ZR-1, great car.
'96 CE LT-1 it's a low mileage, bone stock, auto ...1100 miles past year. 20180531_151332.jpg20180531_151349.jpg20180528_202102.jpg Sent from my SM-N920V using ZR-1 Net Registry mobile app
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1990 ZR-1 #1587 1990 ZR-1 #1727 |
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#5 |
![]() Join Date: Dec 2014
Location: Long Island, NY
Posts: 295
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Not sure if these posted in high-quality or not. Oh well.20180531_151349.jpeg20180531_151332.jpg
Sent from my SM-N920V using ZR-1 Net Registry mobile app
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1990 ZR-1 #1587 1990 ZR-1 #1727 |
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#6 |
![]() Join Date: Dec 2019
Location: st louis mo
Posts: 747
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Thanks guys
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#7 |
![]() Join Date: Sep 2008
Location: Mullica Hill, New Jersey
Posts: 2,574
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Not recommended.
Just wipe it. repeatedly. That starter will drown. Marty |
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#8 |
![]() Join Date: Dec 2003
Location: Arcadia,OK
Posts: 3,384
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Apart from the starter, the other concern associated with washing the engine, especially power washing, is the engine harness is loaded with a myriad of connectors. The weatherseals are now 30+ years old. Electrical problems are the problems I despise the most, probably because it's not my strong suit.
Whenever you have an electrical connector apart, I recommend taking the opportunity to remove the weatherseal, clean it & apply di-electric grease, rubbing it on between thumb & forefinger. Keeps the rubber healthy & makes a better seal. I even q-tip some on the pins to help prevent corrosion.
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Jerry Downey JERRYS LT5 GASKETS & PARTS http://www.jerrysgaskets.com 1994 ZR-1, Black/Black, Lingenfelter Aerobody, 416cu in, 3.91 gears, coil-over susp, Brembo brakes, etc. 2016 Black-Red, 3LT-Z51 Auto 8-speed. |
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#9 | |
![]() ![]() Join Date: Nov 2007
Location: Squires (near Ava MO in the Mark Twain N'tl Forest) - Missouri
Posts: 6,493
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Good carz, good food, good friendz = the best of timez! 90 #1202 "FBI" top end ported & relieved Cam timing by "Pete the Greek" Sans secondaries Chip & dyno tuning by Haibeck Automotive SW headers, X-pipe, MF muffs Former Secretary, ZR-1 Net Registry |
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