PB Blaster, nuts-off or Pen Penetrating fluid-where in the UK?

Nos4r2 · 27 April 2006, 22:31

I want to get hold of some of the above to get my lower unit off fastish so I can get out in a couple of weeks-anyone got any idea where I can get any in the UK?

codprawn · 27 April 2006, 23:01

Never heard of them - have you tried Plus Gas - it is thinner than WD40 so gets into gaps better.

To be honest though I reckon most of these products are all pretty much the same.

Nos4r2 · 27 April 2006, 23:09

I thought that until I saw our fitter using some Pen that he'd brought back from the USA and it was undoing stuff that soaking in WD40 wouldn't touch. It was actually going through the rust and down the threads of rusted on 18 tonner wheelnuts.

He can't get any more though.

Nasher · 27 April 2006, 23:19

Agree with Codders that they are all much of a muchness.

I presume the Bolts are not willing to come out. Being upside down is going to make it difficult to get enough of any fluid 'pooling' around the bolt heads to allow the capillary action to start. Might be worth getting some heat on the heads first and get the fluid on as they shrink back to size helped by the cold spray.

What have you tried already?

Nasher.

codprawn · 28 April 2006, 02:32

Quote:

Originally Posted by Nos4r2

I thought that until I saw our fitter using some Pen that he'd brought back from the USA and it was undoing stuff that soaking in WD40 wouldn't touch. It was actually going through the rust and down the threads of rusted on 18 tonner wheelnuts.

He can't get any more though.

Plus Gas does the same - give it a try - quite easy to find.

Nos4r2 · 28 April 2006, 17:59

Cheers Codders. Gonna try and find some Plus Gas then-I don't want to wait 2 weeks for diesel to penetrate.

Unfortunately it's not the bolts-they came out really easily. The driveshaft is refusing to come out of the powerhead.

Nate · 28 April 2006, 18:03

Hi Nos,

do you mean Pen 2000? If so it's made by the Maryn group: http://www.maryngroup.com/Product_In.../Trilubes.html

There's a dealer map on their site - no distributor for the UK, but it's easy enough to email a US stockist and buy on line.

Nos4r2 · 28 April 2006, 18:11

No, this stuff-but they aren't replying to emails.

http://www.polytronproducts.com/pen_lube.htm

slimtim · 28 April 2006, 18:54

plus gas is the way to go, but as nashers says you need to let a pool of it sit over the nut. I reckon if you tilt the engine right up, the fix some sort of "bowl" around each nut you could probably fill it enough to cover a bolt...you might need a lot of plus gas though.

Have you tried tightening the bolts very slightly? This often breaks the rust and you can then undo them. I would try tightening them too much though!

Nasher · 28 April 2006, 19:58

I spent half hour once wondering why the lower unit wouldn't come off an old Chrysler outboard.

Then I remembered to disconnect the gear change rod

How you going to get the fluid up to where the spline enters the crankshaft?

Nasher

Nos4r2 · 28 April 2006, 20:22

Quote:

Originally Posted by Nasher

How you going to get the fluid up to where the spline enters the crankshaft?

Nasher

That's the easy bit.Taking the engine off in the morning-I'll drill a 5.5mm hole in the side at the top of the leg alongside the driveshaft.
Then I'll turn the engine upside down and squirt a load of penetrating fluid straight onto the joint.

I'll tap the hole out to an M6 thread and screw a caphead into it to seal it up.