Rust on the lower engine part

brainrain · 07-02-2021, 09:56 AM

Hello everybody,

I noticed when removing the engine cover from the badly rusted parts on the lower engine and the drive belt.
What do you think ? is that bad ?

Thank you for your help

SouthArk370Z · 07-02-2021, 10:20 AM

Looks like mostly surface rust (ie, not harmful) to me - but I'm no expert.

If it were my car, I'd clean all the rust off and put some sort of coating (eg, paint) on it. This will keep the rust from spreading and/or eating deeper into the metal. And it will help prevent rusting in the future.

1slow370 · 07-02-2021, 09:01 PM

Lol for rust on the lower engine part

Rusty · 07-02-2021, 09:30 PM

After cleaning the rust off. Spray this under the car.

CRC 06026 Heavy Duty Corrosion Inhibitor

brainrain · 07-03-2021, 06:03 AM

Thank you for your help

We don't have "CRC 06026 Heavy Duty Corrosion Inhibitor" in FRANCE but I found "Rustol Owatrol". Do you know this product? Is it OK for engine parts ?

On the picture, on the surrounded part 1, Can I clean this and apply an anti rust on this ? this part is very rusty

What about the drive belt or pulley ? Do I need to change ?

Thank you

SouthArk370Z · 07-03-2021, 09:56 AM

Quote:

Originally Posted by brainrain

We don't have "CRC 06026 Heavy Duty Corrosion Inhibitor" in FRANCE but I found "Rustol Owatrol". Do you know this product? Is it OK for engine parts ?

I've never used or even heard of Rustol. Did a web search and most of the pages were in French, which I cannot understand.
I've used a lot of different CRC products through the years and have always been very satisfied with their performance. If you can find CRC products in your area, it will be worth the effort. Another company that makes good rust-control coatings is Rustoleum.

Quote:

Originally Posted by brainrain

On the picture, on the surrounded part 1, Can I clean this and apply an anti rust on this ? this part is very rusty

I'm not sure what that part is. If it's solid bars, then it will be OK to sand, buff, blast, etc. If it is tubing, you run the risk of poking a hole in it when you clean it.

Quote:

Originally Posted by brainrain

What about the drive belt or pulley ? Do I need to change ?

Rust can be rather abrasive and may have caused some excess wear of the belt - a good inspection will tell you if you need to replace. It doesn't look like it needs to be replaced in the pictures.
The pulleys just need a good cleaning/coating. Do not paint where the belt rides - the belt will abrade any rust in that area.

ZoomZ · 07-03-2021, 01:24 PM

As an Aircraft technician who has dealt with corrosion, the only way to get rid of all that is either replacing with new, or removing all components and using media blast to get into the pores.

You can then effectively assess depth of damage.

If all is ok, then clean, prime, paint and add a protective wax coating like above CRC etc.

That is the best way to clean and protect. If the tubing carries any type of fluid, those images do not look like they are salvageable even after clean up.

1slow370 · 07-04-2021, 10:55 AM

Quote:

Originally Posted by ZoomZ

As an Aircraft technician who has dealt with corrosion, the only way to get rid of all that is either replacing with new, or removing all components and using media blast to get into the pores.

You can then effectively assess depth of damage.

If all is ok, then clean, prime, paint and add a protective wax coating like above CRC etc.

That is the best way to clean and protect. If the tubing carries any type of fluid, those images do not look like they are salvageable even after clean up.

Don't forget muriatic acid or caustic dipping and plating

ZoomZ · 07-04-2021, 03:37 PM

Those pipes in image are not hard to replace. Probably parts are inexpensive (DIY). If that was my car, I'd replace them.
They are your oil cooler water lines. Probably will have to drain coolant and refresh. So try to accomplish other things at same time.

https://www.nissanpartsdeal.com/part...;4=SPORT;5=6MT)

(***THIS PART NUMBER IS RANDOM MODEL*** SELECT YOUR VEHICLE MODEL TO GET EXACT PART****)

brainrain · 07-05-2021, 06:12 AM

Thank you all

So I will replace this part https://www.nissanpartsdeal.com/part...;4=SPORT;5=6MT

the hoses also need to be replaced with this part ?

For the oil pan, I should :

Clean with acetone

Paint with a rust converter, I will buy Würth rust converter : https://eshop.wurth.co.uk/Rust-conve...rust+converter

Apply a spray to protect against salt: Facom 006054 Protection Body (https://www.amazon.co.uk/Facom-00605...ct_top?ie=UTF8)

Facom spray :

Quote:

Spray rot-proof and – of quality, intended to protect the body against weather influences and other projections. Quick and easy to apply. A layer of black, heavy, perfectly and is water resistant. Smooth, even finish. Protects against rust and provides long-term resistance to a lot of gravillons, water, salt, etc always flexible even exposed to sub-zero temperatures. Improves the comfort thanks to its insonorisantes properties. Offers excellent protection against corrosion. Examples of applications: protection of chassis and body, metal and plastic. Interior of, RH side skirt and frame... This spray may be up to 3 M² depending on the thickness of the layer.

I think it should be ok for oil pan and the bar that crosses.

For the low engine and pulleys (except on the belt rides) can I do the same ?

Rusty · 07-05-2021, 09:00 AM

You do not want to get anything on where the belt rides. Also you don't want to get anything on the A/C clutch assembly.

ZoomZ · 07-05-2021, 12:14 PM

What Rusty said.

Also, you may want to rough sand the entire oil pan as well. Get rid of as much rust as possible and also prepare surface for chemical/paint retention.

After the rust conversion, you can just Primer and paint instead of Facom. I think painting the oil pan in original Gloss black is more appealing, but up to you.

Rusty · 07-05-2021, 12:35 PM

To kill the rust. Use POR 15. Spray it on. Leave sit. Then rinse off. Let dry. Then paint. I started doing the frame on my truck.

THE BULL · 07-05-2021, 02:52 PM

Quote:

Originally Posted by Rusty

To kill the rust. Use POR 15. Spray it on. Leave sit. Then rinse off. Let dry. Then paint. I started doing the frame on my truck.

I agree, this or vinegar in a bottle and spray as you go then rinse.
Make sure you try to dry these areas well once you rinse or they'll start oxidizing by the time you're done with the rest.

If this area looks like this then your suspension braces will probably look like this as well.
Good luck!

brainrain · 07-06-2021, 02:54 PM

So that I understand ( sorry I don’t understand English very well ) :

-I must not touch pulleys ( should I just clean up ? )
- clean with vinegar the oil pan
- use rust converter on just the oil pan like POR 15 ( but We haven’t this product, we have the product : wurth rust converter ) and paint after

What is the temperature of the oil pan please ? (When engine is hot ) Because temp max for Wurth rust converter is 120 degrees ( 248 F)

Should I use high temp paint?

07-02-2021, 09:56 AM	#1 (permalink)
brainrain Base Member Join Date: May 2019 Location: Paris Posts: 77 Drives: Nissan 370z Rep Power: 6	Rust on the lower engine part Hello everybody, I noticed when removing the engine cover from the badly rusted parts on the lower engine and the drive belt. What do you think ? is that bad ? Thank you for your help

07-02-2021, 10:20 AM	#2 (permalink)
SouthArk370Z Premium Member Join Date: Nov 2010 Location: South Arkansas Posts: 8,435 Drives: 2014 Challenger Rep Power: 324198	Looks like mostly surface rust (ie, not harmful) to me - but I'm no expert. If it were my car, I'd clean all the rust off and put some sort of coating (eg, paint) on it. This will keep the rust from spreading and/or eating deeper into the metal. And it will help prevent rusting in the future. Spartan 1771, JARblue, ZontheRocks and 1 others like this. __________________ Steering Lock Links - Search The370Z Bookmarklet - FSM @ NICOclub Mankind has progressed past the need for war but we haven't evolved that far. - NachoMahma

07-02-2021, 09:01 PM	#3 (permalink)
1slow370 A True Z Fanatic Join Date: Aug 2009 Location: In the D Posts: 3,732 Drives: v8 74 260z ;) Rep Power: 7251	Lol for rust on the lower engine part Chuck33079 and Memphis370Z like this. __________________ ANSWER PRICE LIST Answers - - - - - - - - - - - - - - - - $0.75 Answers (requiring thought) - - - - $1.25 Answers (correct) - - - - - - - - - - $12.50

07-02-2021, 09:30 PM	#4 (permalink)
Rusty Ronin Samurai - Assassin Join Date: Dec 2011 Location: Fayettenam,Pennsyltucky Age: 68 Posts: 35,180 Drives: 2011 Nismo GM 6M Rep Power: 2684437	After cleaning the rust off. Spray this under the car. CRC 06026 Heavy Duty Corrosion Inhibitor Spartan 1771, Optimiser and brainrain like this. __________________ 浪人 - 殺し屋 "The Difficult Anytime, The Impossible By Appointment Only" http://www.the370z.com/members-370z-...o-journal.html

07-03-2021, 01:24 PM	#7 (permalink)
ZoomZ Track Member Join Date: Jan 2017 Location: Vancouver, BC Posts: 760 Drives: 17' 370Z Nismo Rep Power: 40617	As an Aircraft technician who has dealt with corrosion, the only way to get rid of all that is either replacing with new, or removing all components and using media blast to get into the pores. You can then effectively assess depth of damage. If all is ok, then clean, prime, paint and add a protective wax coating like above CRC etc. That is the best way to clean and protect. If the tubing carries any type of fluid, those images do not look like they are salvageable even after clean up. gbrettin and brainrain like this.

07-04-2021, 03:37 PM	#9 (permalink)
ZoomZ Track Member Join Date: Jan 2017 Location: Vancouver, BC Posts: 760 Drives: 17' 370Z Nismo Rep Power: 40617	Those pipes in image are not hard to replace. Probably parts are inexpensive (DIY). If that was my car, I'd replace them. They are your oil cooler water lines. Probably will have to drain coolant and refresh. So try to accomplish other things at same time. https://www.nissanpartsdeal.com/part...;4=SPORT;5=6MT) (*THIS PART NUMBER IS RANDOM MODEL* SELECT YOUR VEHICLE MODEL TO GET EXACT PART****) brainrain likes this.

07-05-2021, 09:00 AM	#11 (permalink)
Rusty Ronin Samurai - Assassin Join Date: Dec 2011 Location: Fayettenam,Pennsyltucky Age: 68 Posts: 35,180 Drives: 2011 Nismo GM 6M Rep Power: 2684437	You do not want to get anything on where the belt rides. Also you don't want to get anything on the A/C clutch assembly. gbrettin, ZoomZ and brainrain like this. __________________ 浪人 - 殺し屋 "The Difficult Anytime, The Impossible By Appointment Only" http://www.the370z.com/members-370z-...o-journal.html

07-05-2021, 12:14 PM	#12 (permalink)
ZoomZ Track Member Join Date: Jan 2017 Location: Vancouver, BC Posts: 760 Drives: 17' 370Z Nismo Rep Power: 40617	What Rusty said. Also, you may want to rough sand the entire oil pan as well. Get rid of as much rust as possible and also prepare surface for chemical/paint retention. After the rust conversion, you can just Primer and paint instead of Facom. I think painting the oil pan in original Gloss black is more appealing, but up to you. Rusty and brainrain like this.

07-05-2021, 12:35 PM	#13 (permalink)
Rusty Ronin Samurai - Assassin Join Date: Dec 2011 Location: Fayettenam,Pennsyltucky Age: 68 Posts: 35,180 Drives: 2011 Nismo GM 6M Rep Power: 2684437	To kill the rust. Use POR 15. Spray it on. Leave sit. Then rinse off. Let dry. Then paint. I started doing the frame on my truck. gbrettin and brainrain like this. __________________ 浪人 - 殺し屋 "The Difficult Anytime, The Impossible By Appointment Only" http://www.the370z.com/members-370z-...o-journal.html

07-06-2021, 02:54 PM	#15 (permalink)
brainrain Base Member Join Date: May 2019 Location: Paris Posts: 77 Drives: Nissan 370z Rep Power: 6	Rust on the lower engine part So that I understand ( sorry I don’t understand English very well ) : -I must not touch pulleys ( should I just clean up ? ) - clean with vinegar the oil pan - use rust converter on just the oil pan like POR 15 ( but We haven’t this product, we have the product : wurth rust converter ) and paint after What is the temperature of the oil pan please ? (When engine is hot ) Because temp max for Wurth rust converter is 120 degrees ( 248 F) Should I use high temp paint? Last edited by brainrain; 07-06-2021 at 05:58 PM.

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
Rust in 2017 Engine Bay?	370zHawaii	Nissan 370Z General Discussions	6	02-13-2019 12:39 PM
lower engine splash guard	fairlady_z34	Exterior & Interior	5	12-12-2013 06:59 PM
[WTB] Lower engine cover shroud	RedNismoZ	Parts for sale (Private Classifieds)	18	10-25-2012 03:55 AM
Lower engine cover	bigrob126	Nissan 370Z General Discussions	6	04-29-2011 01:14 PM
underbody/engine block rust prevention?	ADmaster71690	Exterior & Interior	13	08-31-2009 06:34 PM