How do u guys degrease / hot wash under your c4?
Thread Starter
Oil Producer
Joined: Apr 2014
Posts: 9,367
Likes: 2,735
How do u guys degrease / hot wash under your c4?
OMG i thought my 85 red z51 was bad.....
I just put my 87 z52 up on jacks and it has 1/4 inch of crap glued to the entire underside.
I have a gravel driveway (black gravel) and i put it up on stands in my driveway, attached a hose to my hot water tank, and drained 4 hot water tanks under the car. Its got the 85 nice and clean. Allowed me to dial in directly to where all my leaks were on the 85 (which by the way, you guys have been amazing helping me sort it all out, and I am finally done!).
I am thinking of getting my brother in laws pressure washer and hooking hot water up to it. Not sure if I can hurt anything with the pressure washer. I used just a regular spray gun nozzle when i did the 85.
So...
1, What do you guys do for the underside? Does anybody use de-greaser first?
2, While we are at it...what do you guys do for getting years of gunk and grime out of the engine bay? L98 specific as we don't have an opti. Anything we can't spray with hot water?
I just put my 87 z52 up on jacks and it has 1/4 inch of crap glued to the entire underside.
I have a gravel driveway (black gravel) and i put it up on stands in my driveway, attached a hose to my hot water tank, and drained 4 hot water tanks under the car. Its got the 85 nice and clean. Allowed me to dial in directly to where all my leaks were on the 85 (which by the way, you guys have been amazing helping me sort it all out, and I am finally done!).
I am thinking of getting my brother in laws pressure washer and hooking hot water up to it. Not sure if I can hurt anything with the pressure washer. I used just a regular spray gun nozzle when i did the 85.
So...
1, What do you guys do for the underside? Does anybody use de-greaser first?
2, While we are at it...what do you guys do for getting years of gunk and grime out of the engine bay? L98 specific as we don't have an opti. Anything we can't spray with hot water?
Team Owner
Joined: Feb 2006
Posts: 23,144
Likes: 117
From: San Antonio Texas
A lot of guys use that Simple Green stuff, but I just can't stand the smell. I've used that Purple spray cleaner & brushed it in with an old paint brush or old wheel brush. Pressure spray won't hurt anything except electrical connectors. Be careful not to spray directly on them or you could pressure fill them with water. I've also heard that some solvents shouldn't be left on the fiberglass springs. Not sure what it is supposed to do but I keep them rinsed off when degreasing.
Safety Car
Joined: Aug 2009
Posts: 3,751
Likes: 275
From: Melbourne, Victoria, Australia
Hi
I usually use the high pressure car wash and spray the underside clean every six months or so, when i had the transmission out waiting for the heavy duty one i cleaned the underside with a brush.
Then i decided to rebuild the rear end, took the whole diff assembly off the car and took it to be pressure cleaned.
Replaced the uni joints, bushes and fixed the leaking diff.
New hub bearings and she looks like new under there.
Now the front end, i cant wait to rebuild that and clean her up real nice.
Is it bad when the underside looks better than the top?
Do i go all out and repaint
new old car lol
I usually use the high pressure car wash and spray the underside clean every six months or so, when i had the transmission out waiting for the heavy duty one i cleaned the underside with a brush.
Then i decided to rebuild the rear end, took the whole diff assembly off the car and took it to be pressure cleaned.
Replaced the uni joints, bushes and fixed the leaking diff.
New hub bearings and she looks like new under there.
Now the front end, i cant wait to rebuild that and clean her up real nice.
Is it bad when the underside looks better than the top?
Do i go all out and repaint
new old car lol
Thread Starter
Oil Producer
Joined: Apr 2014
Posts: 9,367
Likes: 2,735
Hey Garard,
have you ever looked up under the car above the tranny and on the cbeam? Mine is covered in a quarter inch of dust/grime/grease/oil. i think if you had one of those hook shaped nozzles you might be able to get under there without raising the car up but i am thinking that a guy has to raise it up.
My car leaks as bad or worse than my 85 did but the good news is that I have fixed it all before and it should take me 1/4 of the time to do my 87. Not only that but I will be able to order everything online and do it all at once instead of doing one job then ordering the next part...
have you ever looked up under the car above the tranny and on the cbeam? Mine is covered in a quarter inch of dust/grime/grease/oil. i think if you had one of those hook shaped nozzles you might be able to get under there without raising the car up but i am thinking that a guy has to raise it up.
My car leaks as bad or worse than my 85 did but the good news is that I have fixed it all before and it should take me 1/4 of the time to do my 87. Not only that but I will be able to order everything online and do it all at once instead of doing one job then ordering the next part...
Hi
I usually use the high pressure car wash and spray the underside clean every six months or so, when i had the transmission out waiting for the heavy duty one i cleaned the underside with a brush.
Then i decided to rebuild the rear end, took the whole diff assembly off the car and took it to be pressure cleaned.
Replaced the uni joints, bushes and fixed the leaking diff.
New hub bearings and she looks like new under there.
Now the front end, i cant wait to rebuild that and clean her up real nice.
Is it bad when the underside looks better than the top?
Do i go all out and repaint
new old car lol
I usually use the high pressure car wash and spray the underside clean every six months or so, when i had the transmission out waiting for the heavy duty one i cleaned the underside with a brush.
Then i decided to rebuild the rear end, took the whole diff assembly off the car and took it to be pressure cleaned.
Replaced the uni joints, bushes and fixed the leaking diff.
New hub bearings and she looks like new under there.
Now the front end, i cant wait to rebuild that and clean her up real nice.
Is it bad when the underside looks better than the top?
Do i go all out and repaint
new old car lol
Le Mans Master
Joined: Oct 2004
Posts: 6,314
Likes: 508
From: South-central Missouri
I'm not a WAXER, so spotless isn't important to me. So, Simple Green or that purple spray cleaner (autoparts place) and a pressure washer seems to get it pretty clean.
I don't polish stuff under there, but it does get it very clean; ready to polish, if one wanted to, I recon.
I don't polish stuff under there, but it does get it very clean; ready to polish, if one wanted to, I recon.
Safety Car
Joined: Aug 2009
Posts: 3,751
Likes: 275
From: Melbourne, Victoria, Australia
Hey Garard,
have you ever looked up under the car above the tranny and on the cbeam? Mine is covered in a quarter inch of dust/grime/grease/oil. i think if you had one of those hook shaped nozzles you might be able to get under there without raising the car up but i am thinking that a guy has to raise it up.
My car leaks as bad or worse than my 85 did but the good news is that I have fixed it all before and it should take me 1/4 of the time to do my 87. Not only that but I will be able to order everything online and do it all at once instead of doing one job then ordering the next part...
have you ever looked up under the car above the tranny and on the cbeam? Mine is covered in a quarter inch of dust/grime/grease/oil. i think if you had one of those hook shaped nozzles you might be able to get under there without raising the car up but i am thinking that a guy has to raise it up.
My car leaks as bad or worse than my 85 did but the good news is that I have fixed it all before and it should take me 1/4 of the time to do my 87. Not only that but I will be able to order everything online and do it all at once instead of doing one job then ordering the next part...
I cleaned the C beam when the transmission was out, Diff C Beam the lot got high pressure cleaned. No leaks from my 85, engine is two years old and trans almost two months old.
Had not leaked a drop for many years until the power steering high pressure hose sprung a leak a couple of weeks ago, new hoses and she is good against .
(Had to get under and wipe things clean again of course. Spotless like new underneath).
