Central heating boilers often have a SS heat exchanger these days.unstable load wrote:Depending on exactly what that is, you should keep it far away from the shiny bits as it will corrode stainless steel if it is this stuff.....
http://www.tergo.co.nz/Tech%20Data/HTML ... salts.html
My V8 Sierra project ..... maybe I will finish this one !
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Dave
London SW
Rover SD1 VDP EFI
MegaSquirt2 V3
EDIS8
Tech Edge 2Y
London SW
Rover SD1 VDP EFI
MegaSquirt2 V3
EDIS8
Tech Edge 2Y
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Aaah, Houston, we could have a problem, over......DaveEFI wrote:Central heating boilers often have a SS heat exchanger these days.unstable load wrote:Depending on exactly what that is, you should keep it far away from the shiny bits as it will corrode stainless steel if it is this stuff.....
http://www.tergo.co.nz/Tech%20Data/HTML ... salts.html
Get hold of some Phosphoric acid and mix it to ratio with hot water, dip the parts in and watch it foam away. Smells bad and is pretty nasty stuff, but works a treat.
Cheers,
John
John
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And there I was thinking you were giving out yout patented fuel recipe for the slingshot!kiwicar wrote:Phosphoric acid and hot water nice! ! ! !![]()
Best regards
Mike
PS tell me do you me do you mix equal parts sulphuric, hydrochloric and nitric acids, add glycerine, boil off the water and drink the resulting liquid to relieve high blood pressure? ? ? ? ?
Ian
Owner of an "On the Road" GT40 Replica by DAX powered by 3.9Hotwre Efi, worked over by DJ Motors. EFi Working but still does some kangaroo at low revs (Damn the speed limits) In to paint shop 18/03/08.
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http://en.wikipedia.org/wiki/Phosphoric_acid
Rust removal
Phosphoric acid may be used as a "rust converter", by direct application to rusted iron, steel tools, or surfaces. The phosphoric acid converts reddish-brown iron(III) oxide, Fe2O3 (rust) to black ferric phosphate, FePO4.
"Rust converter" is sometimes a greenish liquid suitable for dipping (in the same sort of acid bath as is used for pickling metal), but it is more often formulated as a gel, commonly called naval jelly. It is sometimes sold under other names, such as "rust remover" or "rust killer". As a thick gel, it may be applied to sloping, vertical, or even overhead surfaces.
After treatment, the black ferric-phosphate coating can be scrubbed off, leaving a fresh metal surface. Multiple applications of phosphoric acid may be required to remove all rust. The black phosphate coating can also be left in place, where it will provide moderate further corrosion resistance (such protection is also provided by the superficially similar Parkerizing and blued electrochemical conversion coating processes).
Cheers,
John
John
I had to get the car back on the dolly's so I could turn it around outside and then get it back in the garage the other way round so I could start on the rot on the passenger side which is worse than the drivers side for rust...
Before it was moved I sprayed the parts that are now good with 2 part epoxy primer to keep the surface rust at bay.

Considering taking a week off work to try and get it a bit further along as the odd day here and there does not seem to make much of an impact !
Before it was moved I sprayed the parts that are now good with 2 part epoxy primer to keep the surface rust at bay.

Considering taking a week off work to try and get it a bit further along as the odd day here and there does not seem to make much of an impact !
302 V8 Sierra 5 door sleeper under way
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Well I took a week off work, managed to muller the back of my hand with a wire wheel in an electric drill whilst cleaning up the near side seat mounting plate
no pics of the gore



Fixing the rust on the tunnel, cut out the bad bit ground out the rot and zinc primed.

Welded up and ground down.

Cut out the floor to replace ARB captive nuts and repair the bit 'tards use to jack Sierra's up with along the the damaged original jacking point.




Near side rear chassis rail rot

After loads of cutting, welding, wire wheeling and grinding it's nearly fixed

Skanky bodged sill repair is next on the to do list


This is as far as I got in a week





Fixing the rust on the tunnel, cut out the bad bit ground out the rot and zinc primed.

Welded up and ground down.

Cut out the floor to replace ARB captive nuts and repair the bit 'tards use to jack Sierra's up with along the the damaged original jacking point.




Near side rear chassis rail rot

After loads of cutting, welding, wire wheeling and grinding it's nearly fixed

Skanky bodged sill repair is next on the to do list


This is as far as I got in a week

302 V8 Sierra 5 door sleeper under way
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Looking good.
Those wire wheels can cause some serious damage. Ive been lucky a few times using them. I almost always wear gloves of some sort. Even light gloves will take the hit before your skin does and they have saved me a few times.
I just buy packs of 10 pairs of gloves so Ive always some lying about the garage somewhere, so no excuse not to put them on when using a grinder etc. Even if some of them almost go on fire from the sparks lol
Those wire wheels can cause some serious damage. Ive been lucky a few times using them. I almost always wear gloves of some sort. Even light gloves will take the hit before your skin does and they have saved me a few times.
I just buy packs of 10 pairs of gloves so Ive always some lying about the garage somewhere, so no excuse not to put them on when using a grinder etc. Even if some of them almost go on fire from the sparks lol
9.85 @ 144.75mph
202mph standing mile
http://www.youtube.com/watch?v=XgWRCDtiTQ0
202mph standing mile
http://www.youtube.com/watch?v=XgWRCDtiTQ0
It was gloves that caused the damagestevieturbo wrote:Looking good.
Those wire wheels can cause some serious damage. Ive been lucky a few times using them. I almost always wear gloves of some sort. Even light gloves will take the hit before your skin does and they have saved me a few times.
I just buy packs of 10 pairs of gloves so Ive always some lying about the garage somewhere, so no excuse not to put them on when using a grinder etc. Even if some of them almost go on fire from the sparks lol

The drill slipped and the wire wheel caught the back of the glove and then wound itself into the back of my hand finally stalling the drill

302 V8 Sierra 5 door sleeper under way
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