Exhaust Ideas

[partybarge_pilot]

All right, I got this header in the condition it's in. The PO thought it would be a good idea to silicone the tubes into the collector. Add a few years of rust and they don't want to come apart.

I have tried,
Soaking in penetrating oil for a few days
Heating
Beating
Some acid I have (unknown type)

Still stuck, Need to get coated.............. Any ideas?

http://i55.photobucket.com/albums/g122/bdkw1/100_0706.jpg

[DSRacing]

WD-40, Lacquer thinner, Acetone or 3M adhesive remover.

[Chase 2]

I ran across this, this morning regarding penetrating fluids:

Some of you might appreciate this. Machinist's Workshop magazine tested penetrants for break out torque on rusted nuts.

They are below, as forwarded by an ex-student and professional machinist, Bud Baker.


They arranged a subjective test of all the popular penetrants with the control being the torque required to remove the nut from a "scientifically rusted" environment.

*Penetrating oil ..... Average load*
None ...................... 516 pounds
WD-40 ................... 238 pounds
PB Blaster ............... 214 pounds
Liquid Wrench ......... 127 pounds
Kano Kroil .............. 106 pounds
ATF-Acetone mix.......53 pounds

The ATF-Acetone mix was a "home brew" mix of 50 - 50 automatic transmission fluid and acetone. Note the "home brew" was better than any commercial product in this one particular test. Our local machinist group mixed up a batch and we all now use it with equally good results. Note also that "Liquid Wrench" is about as good as "Kroil" for about 20% of the price.

[baja stu]

I have a spray bottle full of ATF in the shop and it works wonders.

[Chase 2]

You know, diesel seems to be able to weep though just about anything.

[dirtdudeaz]

Rifle Bore Cleaner? throw some in and let it sit. That stuff eats rust

[Travisfab]

How about a set of man hands and a vise.

[partybarge_pilot]

Well, I have acetone and ATF. I'll give that a try next.

PB blaster was the first one I used..........

[partybarge_pilot]

How about a set of man hands and a vise.

I'm trying to get them apart, not destroy them. I thought the 5# mallet would have done it with heat. I was wrong.........

[FABRICATOR]

You know, diesel seems to be able to weep though just about anything.

Diesel does break down silicone.

[JEFFRPM]

Wurth makes a spray bottle of something they call ROSTOFF its made in germany the stuff flat out WORKS.

[jeff]

How about a set of man hands and a vise.

Awesome. Simply awesome.

Aloha

[partybarge_pilot]

OK,

Acetone and ATF. Nada.
Picked up some naval Jelly, too thick.
Tried heat cycling it a few more times. Breathed in smoke from left over chemicals. No beuno.......
Currently soaking in CLR...

[TreyP]

If all else fails, there is always the Thermo Nuclear Warhead option. Or just go buy a new set.

[Dezertpilot]

Or just go buy a new set.

What I was thinking, I guess since Naval Jelly is too thick then Jasco would be out of the question, that stuff is NASTY!!!!

[matt_helton]

barge have you tried Jigaloo?

[California MiniTruck]

Worst comes to worst make stress relief cuts on each pipe and see if that helps? Then after you can weld it back.

[partybarge_pilot]

barge have you tried Jigaloo?

I was almost afraid to Google that, The name just brings up all kinds of interesting ideas................. But no, I haven't tried it. Being a dry lube I don't think it would penetrate down to where it's needed.

[partybarge_pilot]

Worst comes to worst make stress relief cuts on each pipe and see if that helps? Then after you can weld it back.


Just about there...... I'm going to weld a couple pieces of small tube to the pipes and put a piece of all thread through them with some nuts and try jacking them apart first.

[matt_helton]

I was almost afraid to Google that, The name just brings up all kinds of interesting ideas................. But no, I haven't tried it. Being a dry lube I don't think it would penetrate down to where it's needed.

i know, but i just love that name. lol

[NicksTrix]

i can look into what the ryr engine shop uses. back when i was there they had a tank that they soak oil pans and timing covers in to remove the silicone. it's super nasty stuff. not sure if it's an oakite or not. i can call next week for you if you don't get it off. i'm sure they still have it going.

if you try spreading it apart with your all thread, you can easily bend the tubes, be careful. i'd slice it before i did that. you can always weld them back up. just put a alum tube inside that's the right dia and hose clamp to the taughtness you need and weld em up. slight sand inside you'll be golden.

[bajaruner11]

Heat the outer tube of the slip with a torch until glowing red, then quench the smaller tube with water
while still heating the outer tube. The two will fall apart.

[partybarge_pilot]

Well, not one to let a freaking VW exhaust get the better of Me...... This is what I came up with. A couple of sleeves welded on with some all thread and nuts to wedge them apart.

http://i55.photobucket.com/albums/g122/bdkw1/Glass%20car/100_0707.jpg

Even with the nuts tightened as much as I could with open end wrench's 2 of them still needed to be sliced to break them loose. Even after slicing them it still took a large mallet to separate them. What a PITA!

All welded up and on the car to fit the new megaphone.

http://i55.photobucket.com/albums/g122/bdkw1/Glass%20car/100_0708.jpg

Time to get the rest of it coated...............

[partybarge_pilot]

Heat the outer tube of the slip with a torch until glowing red, then quench the smaller tube with water
while still heating the outer tube. The two will fall apart.

I tried that earlier repeatedly. No luck.

Anyhoo, are the splayed collectors always such a pain to assemble?

[Wild bill]

did you ever get that damn thing apart? I need pics of success or destruction.

[partybarge_pilot]

Last picture is the success pic, all fixed and installed. If you look at the collector you can see where I welded up one of the tubes I had to slice.

[J.JOHNSON]

Came in too late with this , but brake fluid eats rust.