C3 General General C3 Corvette Discussion not covered in Tech
Sponsored by:
Sponsored by:

1971 ls5

Thread Tools
 
Search this Thread
 
Old Feb 16, 2021 | 11:51 PM
  #1  
thelal1's Avatar
thelal1
Thread Starter
Pro
Liked
 
Joined: Jan 2016
Posts: 534
Likes: 12
From: Ohio
Default 1971 ls5

After car is restored frame up, when driving it you pick up dirt and grime on chassis. What's the best way to clean the undercarriage.
Ted
Reply
Old Feb 17, 2021 | 10:47 AM
  #2  
barkingrats's Avatar
barkingrats
1967 Pedal Car Champion
Supporting Gold
 
Joined: Mar 2020
Posts: 9,135
Likes: 4,244
From: US-PNW
Default

Are you having the car judged or a tendency towards being super-****? If so, toothbrushes, lots of towels, etc. If not, hose it off when grimy or to remove loose debris from horizontal surfaces and avoid water, mud, and dirt roads.
Reply
Old Feb 17, 2021 | 12:33 PM
  #3  
OldCarBum's Avatar
OldCarBum
Race Director
10 Year Member
Liked
Loved
Community Favorite
 
Joined: Mar 2016
Posts: 14,399
Likes: 8,204
From: Napa Valley California
Default

Buy a quick jack, lift or make a set of 20 foot long wood ramps you can drive it up on in your garage.
Spray the undercarriage with simple green then hose it or pressure wash the undercarriage.
If you are really ****, you can use an electric leaf blower to blow off any water that might spot .
While you are under there, check everything and grease any fittings.
Don’t ask how I know.
Reply
Old Feb 17, 2021 | 04:26 PM
  #4  
thelal1's Avatar
thelal1
Thread Starter
Pro
Liked
 
Joined: Jan 2016
Posts: 534
Likes: 12
From: Ohio
Default 71 ls5

Will Simple green do any thing to frame paint on already, no dulling???
Ted
Reply
Old Feb 17, 2021 | 10:56 PM
  #5  
barkingrats's Avatar
barkingrats
1967 Pedal Car Champion
Supporting Gold
 
Joined: Mar 2020
Posts: 9,135
Likes: 4,244
From: US-PNW
Default

Originally Posted by thelal1
Will Simple green do any thing to frame paint on already, no dulling???
Ted
Simple Green is pretty mild as far as degreasers go, especially when diluted to instructions, so I'd think it's safe. You'd want to test though to make sure that whatever finishes were used on your car are unaffected. I think a better solution (no pun intended) is to use a garden sprayer with Dawn dish soap and water. More cost effective too.
Reply
Old Feb 18, 2021 | 04:13 AM
  #6  
cv67's Avatar
cv67
Team Owner
15 Year Member
 
Joined: Oct 2004
Posts: 81,241
Likes: 3,063
From: altered state
St. Jude Donor '05
Default

Once a yr I put it on jackstands, use some hot soapy water (dawn), big car wash sponge and give it a quick wipe/rinse. Drive it to dry
Unless you have a had leak it will stay cleaner than you think. Lots of hosing..not a fan of getting more water inside the frame than I have to.
Reply
Old Feb 18, 2021 | 09:11 AM
  #7  
thelal1's Avatar
thelal1
Thread Starter
Pro
Liked
 
Joined: Jan 2016
Posts: 534
Likes: 12
From: Ohio
Default Ls5

Dawn liquid with warm water probably be the mildest.
Reply
Old Feb 18, 2021 | 11:54 AM
  #8  
OldCarBum's Avatar
OldCarBum
Race Director
10 Year Member
Liked
Loved
Community Favorite
 
Joined: Mar 2016
Posts: 14,399
Likes: 8,204
From: Napa Valley California
Default

I've never had any issues with Simple Green dulling anything.
I've also used a mild dish soap with great results.
If you have hard water spots to remove, add a little white vinegar into your mix.
The whole idea behind using a pressure washer is that you do apply a lot less water.
If you have a clothes washing machine in your garage, hook your water line up to the hot water side and use hot water which cuts grease the best.
If you don't have a pressure washer, hook your garden hose to the hot water and use a good nozzle.
Just don't get caught running a hose through the house into the laundry room.
Reply
Corvette Stories

The Best of Corvette for Corvette Enthusiasts

story-0

10 Ugly Corvettes That We Still Kinda Love

 Joe Kucinski
story-1

Top 10 Most Expensive Corvettes Ever Sold on Bring A Trailer

 Brett Foote
story-2

10 Things Every Corvette Owner Needs (2026 Edition)

 Michael S. Palmer
story-3

8 Most "Only Corvette Owners Understand" Quirks and Problems

 Pouria Savadkouei
story-4

10 Reasons the C6 Z06 is Still A Performance Benchmark After 20 Years

 Joe Kucinski
story-5

How Much Horsepower Every Corvette Engine "LOST" in 1972

 Joe Kucinski
story-6

Top 10 DOs and DON'Ts for Protecting Your Convertible Top!

 Michael S. Palmer
story-7

Top 10 Most Explosive Corvettes Ever Made: Power-to-Weight Ratio Ranked!

 Joe Kucinski
story-8

150 hp to 1,250 hp: Every Corvette Generation Compared by the Specs That Matter

 Joe Kucinski
story-9

8 Coolest Corvette Pace Cars (and Replicas) of All Time

 Verdad Gallardo
Old Feb 21, 2021 | 08:21 PM
  #9  
cv67's Avatar
cv67
Team Owner
15 Year Member
 
Joined: Oct 2004
Posts: 81,241
Likes: 3,063
From: altered state
St. Jude Donor '05
Default

Simple green on polished aluminum can leave dark stains. Only did it on one set but was bummed..i was warned-\
Damn good cleaner though
Reply

Get notified of new replies

To 1971 ls5





All times are GMT -4. The time now is 04:05 AM.

story-0
10 Ugly Corvettes That We Still Kinda Love

Slideshow: 10 ugly Corvettes that we still kinda love.

By Joe Kucinski | 2026-06-03 10:34:17


VIEW MORE
story-1
Top 10 Most Expensive Corvettes Ever Sold on Bring A Trailer

A lot of money has changed hands at the online auction house over the years.

By Brett Foote | 2026-06-03 10:21:50


VIEW MORE
story-2
10 Things Every Corvette Owner Needs (2026 Edition)

Slideshow: 10 great gifts Corvette enthusiasts actually want for Father's Day!

By Michael S. Palmer | 2026-06-03 15:43:40


VIEW MORE
story-3
8 Most "Only Corvette Owners Understand" Quirks and Problems

Slideshow: These are the quirks, annoyances, and oddly lovable problems that every Corvette owner eventually learns to live with.

By Pouria Savadkouei | 2026-05-28 09:31:39


VIEW MORE
story-4
10 Reasons the C6 Z06 is Still A Performance Benchmark After 20 Years

Slideshow: 10 reasons why the C6 Z06 is still a performance benchmark after 20 years.

By Joe Kucinski | 2026-05-27 17:20:09


VIEW MORE
story-5
How Much Horsepower Every Corvette Engine "LOST" in 1972

Slideshow: How much horsepower every Corvette engine lost in 1972.

By Joe Kucinski | 2026-05-27 16:54:53


VIEW MORE
story-6
Top 10 DOs and DON'Ts for Protecting Your Convertible Top!

Slideshow: How to Protect A Convertible Top: 10 DOs & DON'Ts

By Michael S. Palmer | 2026-04-03 00:00:00


VIEW MORE
story-7
Top 10 Most Explosive Corvettes Ever Made: Power-to-Weight Ratio Ranked!

Slideshow: The 10 most explosive Corvettes ever built based on power-to-weight ratio.

By Joe Kucinski | 2026-05-20 07:23:03


VIEW MORE
story-8
150 hp to 1,250 hp: Every Corvette Generation Compared by the Specs That Matter

Slideshow: From C1 to C8 we compare every Corvette generation by the numbers.

By Joe Kucinski | 2026-05-12 16:54:12


VIEW MORE
story-9
8 Coolest Corvette Pace Cars (and Replicas) of All Time

Slideshow: Some Corvette pace cars became collectible legends, while others perfectly captured the look and attitude of their era.

By Verdad Gallardo | 2026-05-11 09:50:51


VIEW MORE