Thread: Exhaust heat shield removal

Hi Ron, have you tried the Loctite Freeze & Release ? Did the trick when I removed them for the head gasket job a couple of yrs ago. WD40 wouldn't budge them.

No, I haven't. I'll see if I can get some. Thanks Allan.

Hogan, you're a hero!

If you hadn't mentioned it I wouldn't have looked it up on the 'net. Then I wouldn't have found CRC Freeze Off.

So I went to my local go to place, Metropolitan Industrial Supplies to get some as I knew he stocked CRC. He hadn't heard of the CRC product but he did know of the Loctite. He didn't have either.

However, he went out the back and came back with a small aerosol pack of PB Blaster - a sample pack - and gave it to me to try.

The Yanks really like PB which I didn't know was available here, so I came home and tried it. It's not a freeze spray but a penetrant and it works.

Most of the bolts came out, one broke.

Whether it is as good as/better than the freeze sprays I have no idea - but it was free. As promised, I'll let the shop-owner know that it worked.

Better than that is stuff called BOLT-OFF. made in Mackay sold by Blackwoods. Comes in a spray can @ about $10

I hadn't heard of it. Thanks for that. I'll look it up.

I wish I'd read this before taking the head off. I ended up bending the heat shield to get to the exhaust manifold bolts...crude but effective

Gary

we used some anti seize when we put them back on, hopefully that will help if we ever need to remove them again

Hi Ron, re exhaust heat shields, I posted this note on RR.net>>>

The exhaust manifold heat shields were left off when we put a new engine in about 8 years ago.
JUST HAD A FIRE IN THE ENGINE BAY A FEW WEEKENDS AGO.
We were working it pretty hard up the beach in soft sand, as I have done numerous times before, and smelt something. Got out and checked and there were two small fires on the firewall - the larger one with flames licking up to bonnet height from down behind the engine! Put them out with sand and can't see any damage!! The fire was licking up around the coil packs, plug leads, wiring harnesses, etc.
Checked it over, changed my boxers, started her up and kept going. Needless to say I've cleaned the 18+ years of accumulated oil & dirt off the firewall and now looking for a set of heat shields!! (anyone got a source?)

<<< It's more likely my cruddy firewall contributed to the fire rather than not having heat shields..? I'm also considering wrapping the extractors in lagging instead.

Jason