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MG TD TF 1500 - Exhaust Pipe Goop

When assembling the exhaust system Ed China always uses his favourite blue goop to join the various elements, not only to ensure a leak proof joint but also presumably to make assembly a little easier. Seems like the way to go but I wondered how difficult it is to remove the components once this stuff has set. As it seems I'm destined to do most things two or three times before I'm satisfied, I didn't want to make a rod for my back. I'd appreciates some advice on the various sealers available, their limitations & especially the ease of disassembly should it become necessary. Cheers
Peter TD 5801
P Hehir

Blue Goop ???? IS there a name that we can Google???
Do you mean EDD CHINA from commfybanana.com ???
https://www.youtube.com/watch?v=aWfCczHfYSQ


Steve
Steve Wincze

I prefer to weld the system together. No leaks ever, no rattles, no squeaks, no loose clamps, etc. When you want the system removed it's no different than when it's in multiple pieces. You just undo the front flange and the two mounting brackets and the whole system drops off the bottom. It's a little more awkward to re-mount, but takes no more time than individual pieces that have to be attached to one another.
Steve Simmons

I don't know the name Steve or I would have used it. Yes Edd China from Wheeler Dealers. I could weld the exhaust system together but that would make separating the individual components even more difficult, if not impossible. It would also mean the tail pipe, muffler & engine pipe would not be able to be reused. At least not without a ton of refabricating. Interested in hearing from anyone who HAS used this "blue goop" or something similar. Cheers
Peter TD 5801
P Hehir

About a month ago I had occasion to relocate the O2 sensor bung on my exhaust pipe. To remove the exhaust pipe it was necessary to pull the pipe out of the muffler. Oh, how I wished that I had used some sort of non-hardening sealant when I assembled the system a couple of years ago. Please tell me more about this "Blue Goop". BTW, I now get reasonable O2 readings. Thanks Mort. Bud
Bud Krueger

Why would you need to separate them again? In 20 years the muffler will need to be replaced, at which point you simply cut it off and weld a new one on. Very common, very simple procedure. And in my experience, a clamped system that has been together for 20+ years will have to be cut apart anyway! I've had three different welded systems on my original T-Series downpipe.
Steve Simmons

Peter I use "Neverseize", the oil burns of however the nickel film remains intact which facilitates dis assembly. A good exhaust system should not require goop to seal it, adequate penetrations and the use of good clamps should give a leak free result.

Be aware some of the clamps out of China are rubbish and wont provide sufficient clamping pressure.
G Evans

My reasoning is if I have to replace either the tail pipe, muffler or engine pipe I'd like to just replace the defective or damaged item & not the lot. The ability to separate the exhaust components makes access working on the drive train so much easier. Also as I said above I seem to do things more than once on this car. Thanks Graeme. I'll check it out. Cheers
Peter TD 5801
P Hehir

Not what your looking for Peter, but just a little info. I put a new stainless system on the car, 3 pieces and was fortune enough to have zero leaks just by using clamps. Just replacing one item on your car might give you a problem trying to seal the mating surfaces from old to new. I've used an exhaust pipe expander tool that kinda straightens the used surface, such as on a muffler female end to help get a better fit to the tail pipe. But I have also used something like this as a sealer. PJ


Paul161

Thanks PJ. Does it set hard or is it possible to subsequently separate the joined components? Edd uses the blue stuff on every exhaust system I've seen him install, including new stainless systems. He does seem to know what he's doing so I figure if it's good enough for him... I may have to flare the end of the engine pipe to fit over my 45 year old unused Lukey muffler so I'll probably need to use the tool you mention. Cheers
Peter TD 5801
P Hehir

Just checked the Hylomar out on the net & it seems this is what Edd uses as it's described as a blue paste in the TDS. It sets under exhaust temperature but doesn't tell me how difficult it is to remove once cured. Cheers
Peter TD 5801
P Hehir

Peter, Hylomar doesn't usually doesn't set real hard, but it does grab what your putting it on. Kinda messy to work with, but it's a top brand product. Been a while since 've used it and I don't remember how hard it gets. If you could check with Edd, I'm sure you can get an answer. PJ
Paul161

Just for the record, you don't have to replace the entire system just because it's welded. You just cut the weld off, and weld the new piece on. I've had to cut most old mufflers off even when they were clamped anyway! Rust.
Steve Simmons

This thread was discussed between 28/09/2015 and 30/09/2015

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