Intake horn corrosion

[flyin ryan]

Originally Posted by tomtom72

I would just offer up this suggestion concerning that corrosion on the T/B cover plate.

Upon dissassembly use some baking soda solution or white vinegar and a very stiff tooth brush on the bare metal gasket lands in that coolant cavity. I had to spend a good bit of time to remove all the white looking residue from those areas using even a brass bristle brush (gently) and a tooth brush, using the vinegar as a lube & cleaner. I even used some crocrous cloth wetted with paint thinner and eventually I got it all off of all the surfaces, the gasket lands, coolant cavity & plate, screw threads and screw holes clean. I wonder if CLR would be the best thing to use???

Anyway, after cleaning I then washed all the fromerly corroded surfaces w/steam distilled water & dish soap and then rinsed and used acetone as a final de-watering wipe. I used the LPE paint to refinish my stuff. I also didn't have any pock-marks than required any body work to make smooth.

I didn't paint the gasket lands, I masked them off on the T/B and the cover plate I only painted the top side. I used rtv to coat the gasket on both sides and reassembled. It's been since October of '05 and I haven't had the corrosion come back....but I do use steam distilled water to mix down my coolant and it gets done every two yrs without fail.


Tom

i think i recall you posting this some time ago? good tips for everyone.

[Chris_32212]

Originally Posted by GOLDCYLON

Well im not sure how to stop the corrosion however The old paint was not that durable on our motors from the factory. For PCing I recommend Jeffvete a forum member here who did the PCing on my car. He could have your plenum, Cam covers and Airhorn seen to in no time.

Heres a couple of Photos of Jeffvettes work. I took these about a year ago still need to snap a few with the Samcos upgrade.

what air intake box is this? does it help with power? is it still available? somone mentioned a reverse air cleaner but i have never seen one. does anyone know if they are still available?

Chris

[tomtom72]

Chris that's a "cut lid" type. I do believe over at the NetRegistry site in the vendor section you can find it. If I remember right Mark Copeland sells it, but don't quote me on that. Or you could go buy an air box at a salvage yard and cut the top out yourself and then paint it or do a powder coat job.

Thanks Ryan....if I was thinking I would have just posted a link to the thread where it was....

One of the keys with that bubbling I think is that tap water is the culprit. To cure it ya gotta get all the residue off of the metal before ya refinish it. Then ya gotta use steam distilled water going foreward to eliminate the disolved mineral in tap water. Reason for the SD water is so that the stray electric current does not make salts out of the disolved minerals. JMHO....

[Chris_32212]

Originally Posted by tomtom72

Chris that's a "cut lid" type. I do believe over at the NetRegistry site in the vendor section you can find it. If I remember right Mark Copeland sells it, but don't quote me on that. Or you could go buy an air box at a salvage yard and cut the top out yourself and then paint it or do a powder coat job.

Thanks Ryan....if I was thinking I would have just posted a link to the thread where it was....

One of the keys with that bubbling I think is that tap water is the culprit. To cure it ya gotta get all the residue off of the metal before ya refinish it. Then ya gotta use steam distilled water going foreward to eliminate the disolved mineral in tap water. Reason for the SD water is so that the stray electric current does not make salts out of the disolved minerals. JMHO....

i dont understand what you mean by "cut lid type" ....i have a modified air lid but thats just the part that surounds the filter. the air box on this car looks very different from the one i have on my 93.

Chris

[tomtom72]

sorry Chris, I should have been more specific.

I do believe that the one pictured is sold as a complete assembly by Mark Copeland(?).

My alternative to buying a Mark Copeland unit would be to cut the slatted portion (the top) of a stock lid out to expose the A/F element completely.

I believe that the "mod" to our air boxes is in the How To section at the NetReg site....the home made version will not look as good as Mark's unit, but it'll do the same thing.

I hope I'm being clearer now? Sorry.


Tom

[secondchance]

Well, thanks for all the info guys.
I have never removed the plate above the throttle body but from what i read it seems there is a coolant below the plate possibly acting as electrolyte.
Looks like this will be a perfect Christmas time project.

Thanks all!

[-=Jeff=-]

Originally Posted by Chris_32212

what air intake box is this? does it help with power? is it still available? somone mentioned a reverse air cleaner but i have never seen one. does anyone know if they are still available?

Chris

The one GC has is the the Copland air intake.. it is no longer being made or sold. so you need to find one used.

[GOLDCYLON]

Yep its a Marc Coplan Air blaster he only made about 20 or so and they are NLA. You can still find his inserts for the intake duct from time to time. Very smooth surfaces and indeed an open air element. As stated the closest to it would to be a cut top stock airbox.

[Jim Nolan]

FYI! I was not able to find the new gasket for that plate when I pulled mine. I wound up buying gasket material and making my own.

[Chris_32212]

thanks for the info about the copland unit being NLA. like i said, i already have a modified air lid which exposes the Air Filter element much better than stock so i guess im as good as im going to get there but does anybody know anything about the reverse flow air cleaner? TPIS used to make one but they no longer do, does anybody know if there are any still available anywhere? i was told a guy swaped out to the reverse flow cleaner inbetween runs and picked up 2 tenths in the 1/4. any help is appreciated. again, sorry for hijacking the thread. i really need to stop making a habbit of this. lol.

Chris