Ceramic coated exhaust

al mackenzie · Post by **al mackenzie** » Wed Oct 28, 2009 9:15 pm

Hello Richard. Do you also frequent the Rover P6 Owners Club Forum? I would like to know more about the design of your custom exhaust for your P6. Is it a manual or an automatic? Are you using original iron manifolds or headers? Is it a twin exhaust with two exits at the back of the car? Or is it a 2into1? Do you have a connecting pipe between the two sides if is a twin? I am still rebuilding my P6, will start with a standard mild steel exhaust at first but am also thinking about designing a custom exhaust with two back boxes either side of the rear valance. Photos of your set-up would be welcome.

Richard P6 · Post by **Richard P6** » Wed Oct 28, 2009 11:52 pm

gelmonkey wrote:Richard
Do you have a company website?I sometimes have need for specialist adhesives but struggle sometimes to find a company, let alone someone who has more than an ameobic knowledge of the products they are selling to answer questions or give advice.
Cheers
Cheeky monkey aka Gelmonkey aka Paul

We do indeed but you are probably better off PMing me at the moment as it is out of date and being refurbed. I have been in industrial adhesives since 1981, so don't know everything, but I am getting the hang of it

al mackenzie wrote:Hello Richard. Do you also frequent the Rover P6 Owners Club Forum?

Yes - I am 'quattro' over there - silly name for a P6 Forum - it's a long story. Well not so long as boring.

al mackenzie wrote:I would like to know more about the design of your custom exhaust for your P6. Is it a manual or an automatic?

Originally auto, but now a 5 speed manual LT77

Are you using original iron manifolds or headers?

Stainless 4 into 1 JP Tubular headers 1 3/4"

Is it a twin exhaust with two exits at the back of the car? Or is it a 2into1?

2 into 1 to emulate the original as closely as possible

I am still rebuilding my P6, will start with a standard mild steel exhaust at first but am also thinking about designing a custom exhaust with two back boxes either side of the rear valance. Photos of your set-up would be welcome.

Headers and front section are coming off soon to be coated

Richard P6 · Post by **Richard P6** » Sat Nov 28, 2009 4:37 pm

They're back and they're on.

Funny shade of Satin Black though, looks more like chocolate brown?

Took it for a run, quick blast down the motorway then back to the garage, about 15 miles covered. You can put your hand within half an inch of them and although they do feel hot, I would have lost skin before they were coated. I really should have measured the temperature beforehand, but after the run they were at 310C. After ten minutes with the engine off they were down to 50C.

I thought this was quite hot, but they are certainly a lot lot better than before.

Tail pipe whilst running, directly after the run was 32C and the rear resonator was 23C

gelmonkey · Post by **gelmonkey** » Sat Nov 28, 2009 7:12 pm

Looking good Rich

sidecar · Post by **sidecar** » Sat Nov 28, 2009 8:43 pm

My exhaust have been coated with the silver stuff, it is holding up well. BTW you might want to think about mounting your coil vertically, it's got something to do with the oil in them.

Richard P6 · Post by **Richard P6** » Sat Nov 28, 2009 8:52 pm

gelmonkey wrote:Looking good Rich

Cheers Paul

I was going to drive it around until the tax ran out (Monday

) then strip it down to sort some small tin worm deposits and give it a respray.

Unfortunately the pressure guage is now reading 3 PSI instead of its normal 5.5Psi. Resetting it to 5.5 meant adjusting the regulator so far that the lock nut won't go on, and it then slowly drops to 3 psi. After 10 minutes or so it dropped to zero.

So it seems I have a blockage, dirty filter, crap in the tank, pump failing, or whatever. Oh well SORN it now and take it to bits

al mackenzie · Post by **al mackenzie** » Sat Nov 28, 2009 9:12 pm

Looks great Richard. I'm mrtask on the p6roc forum. Thanks for the photos. Can you tell me what you paid for the headers, and how much to have them ceramic coated? Who are JP? Do you have their contact details for me please?

gelmonkey · Post by **gelmonkey** » Sat Nov 28, 2009 10:06 pm

Hey Rich
Just think that by the new season you will be well sorted and back on the road.With the amount of rain coming down at the moment the last place you want to be is out on the road.
Check the diaphram in the in the regulator this could be the problem with the pressure drop.
We put the bonnet back on my Baby last night and now we are just a few short hours away from being completely rebuilt.What a long haul but what a feeling

Are you still going to get the full system coated and have you noticed a difference in the performance?
Talk soon
Cheers
P

Richard P6 · Post by **Richard P6** » Sun Nov 29, 2009 12:24 pm

Hell Al

Thought that might be you over on the P6 forum.

http://www.jpexhausts.co.uk/ - Jp made a batch of these manifolds for RPI http://www.v8engines.com/ and they sell them. They were on the car when I bought it, but according to the spread sheet I got with it, they were £450 plus vat and carriage. That was a few years ago now though.

Please bear in mind that I had some problems with the manifolds touching the O/S (N/S to you) engine mount and creating so much heat that it melted and the engine dropped on one side. I had to modify the engine mount, (the original owner had already carved a chunk out of the bodywork,) to get them to clear. They also give off so much heat that parts in the engine bay melted, including some of the rubbers. The heat was so bad that I wrapped the manifolds to try and get the engine to run well. It was breathing very hot air and this really doesn't help with power. That worked but the best way of sorting it was either to revert to the old manifolds, or get the SS ones ceramic coated.

The ceramic coating was £320.00 plus vat for the manifolds, Inside and out, and the front section outside only.

They still don't look black to me

Hi Paul

The performance is difficult to tell as I have only driven it 15 miles, now have a fuel starvation problem, and the tax runs out tomorrow

I was going to take it off the road and completely strip it down, have the bodyshell (Base Unit) dipped and rebuild from the ground up, but as Al (above) will tell you, that takes an age.

So I will probably just remove the panels and paint them, sort out any tim worm deposits (have a welder

) remove engine and clean/paint/polish it, paint engine bay, rebuild gearbox, clean out all of the fuel lines, relocate facet pump in the boot (too noisy where it is), fit new carpets/sound deadening, treat and fit leather seats, etc etc.

Hopefully finished by about the end of April.

gelmonkey · Post by **gelmonkey** » Sun Nov 29, 2009 1:15 pm

Hi Rich
Just a small amount of work over the winter then!
I agree with you that the headers don't look black black.
Maybe they will darken down with use.
Good luck with all your planned work,at least it will give you something to do.
Cheers
P