1st Generation Specific (1979-1985) 1979-1985 Discussion including performance modifications and technical support sections

Rust under battery....worry point?

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Old 02-21-06, 12:29 PM
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Rust under battery....worry point?

Been having too much fun with my M3 and neglected the RX7 for a few months. Dug in a little last night to clean up the engine bay a bit and strip out non-func cruise, useless sub-zero, and the washer bottle I never use. Poking around and trying to locate some removable wires, I pulled the battery. Underneath the plastic tray was rusted as all hell. The bolt nearest the headlight pulled a 1"x1" piece of former metal out with it. Is this an area I need to worry about? Not really structural is it?

I wanted to turbo this car, but I'm now wondering if I shouldn't even bother? I'll try to get pics later today.
Old 02-21-06, 12:40 PM
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That is a very normal spot for rust.

I would hose it down with something to kill it and then just not worry.
Old 02-21-06, 01:02 PM
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What should i hose it down with? Should I have someone weld in a panel or something?

I see you're in Snellville. Who around here is good with rotaries? Anyone I can get a good factory compression test run off of?

Thanks!!
Old 02-21-06, 01:45 PM
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Water to Kill the battery acid and then Por15 to kill the rust.

David Girod has a tester. He did post here some. Address is limitededitionrx7@joimail.com <- if it is still a good address.

I cant afford to pay some one to work on my cars so I do it all myself with the help of my dad.
Old 02-21-06, 03:29 PM
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Here's the spot:



Old 02-21-06, 03:54 PM
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http://www.mazcare.com/index.html

i have heard that they are good with rotaries, although i do not personally know if they have a factory compression tester though
Old 02-22-06, 12:21 AM
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Cool...thanks! They're on the right side of town too!
Old 02-22-06, 08:05 AM
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yes my battery spot has a a ton of rust there.. i just soak it with wd-40 is that effective?
Old 02-22-06, 08:15 AM
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Sure. if you want to oil your rust.
Old 02-22-06, 08:18 AM
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well it says on the can it stops rust so i figured it would help. if that doesnt what does?
Old 02-22-06, 08:22 AM
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it displaces water (hence Water Displacement - (formula) 40)

it wont stop rust. go to autozone or similiar. they sell a spray that chemically stops rust.
Old 02-22-06, 08:25 AM
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POR-15 is THE rust killer.

But I painted mine with some rustoleum to match my engine bay.

Another good idea I picked up last week is using brake rotor paint. Its very good with heat, lots of color options, and very protective. I'm actually planning on using it to detail the dirty misc, parts. Like my Alternator.
Old 02-22-06, 08:26 AM
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lol.. ironically, im going to repaint the entire engine bay of the TII with first Por15, then primer, then a ton of VHT paint.
Old 02-22-06, 08:26 AM
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well the roads are covered in snow right now i have some RUST STOP paint spray up stairs would that actually help stop it or does it just cover it up?
i also have rustoleum
Old 02-22-06, 08:28 AM
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yea mazcare has a rotor comp. tester. charlie has the bling bling digital unit. A while back i bought a (backup) old school tester from him.
Old 02-22-06, 12:26 PM
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Originally Posted by BadAssRX-7
yea mazcare has a rotor comp. tester. charlie has the bling bling digital unit. A while back i bought a (backup) old school tester from him.
So Is the address I posted for you still good. You still working on Cars?
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