41 replies to this topic

[fishy]

I think the fact that stainless responds worse to wrapping is proof of hydrogen embrittlement, which is more aggressive on high alloy steels.

Ceramic coating can be both internal and external, but you will still have the problem of moving the heat further down the system, if that is a problem for you.

[Strontium Dog]

Here's a discussion on ceramic coating you may find interesting from another forum I frequent!

http://www.gt4oc.net...hp?f=24&t=82078

[ash]

From some photos we had posted on here a while ago, stainless manifolds don't last anywhere near as long as mild ones when wrapped. The warping is much more pronounced and happens really fast. I wrapped my first freeflow (mild steel) years ago and it also warped pretty quickly and developed pinholes. I had the wrap on for less than 6 months before I gave up on it. Another side effect I noticed was that becasue the heat is released further down the system, the interior of the car and in particular the whole tunnel becomes very, very hot. The rubber block mounting was actually starting to melt and without carpets the front section of the tunnel was too hot to touch at times. The engine was in proper tune, not lean and still there was tremendous heat. I'll never fit this stuff again. I'll make custom heat shields for areas that need it from flexible two-ply heat barrier. I do use the Thermotec clips for my CV gaiters though!

The main reason for wanting it is to keep the heat away from the feed from petrol pump to carb

That section of pipe should always be solid metal, preferably steel as original. You haven't replaced it with rubber have you?

I think it the original engine was rubber, or at least when I bought it. I will definitely have to do something about it.

Hmm some mixed views there. I'm a little bit worried about it 'corroding' and 'distorting' my manifold. The main reason for wanting it is to keep the heat away from the feed from petrol pump to carb and also because I thought it was good for performance to keep the heat it.

Did you consider moving the fuel pipe, you can rotate the pump outlet, then take the pipe almost straight up, onto the bulkhead, accross behind the carb, and into the carb?

Dave

I thought the pump was fixed. I was give it a go though as this will cure one of my problems.

[ash]

Here's a discussion on ceramic coating you may find interesting from another forum I frequent!

http://www.gt4oc.net...hp?f=24&t=82078

Thanks Strontium. I've clicked on the link, I think you have to be a member to view it.

[Strontium Dog]

Here's a discussion on ceramic coating you may find interesting from another forum I frequent!

http://www.gt4oc.net...hp?f=24&t=82078

Thanks Strontium. I've clicked on the link, I think you have to be a member to view it.

Ah OK try this link, it's good stuff!

http://www.demon-twe...p;pcode=NIM1706

[megabob]

same here the Thermotec heat wrap was for my saxo but i soon abandoned that and used it on my mini, if anything it keeps the heat out of the engine bay. i dont think there is a real diference between brands its all fiberglass weave, the only thing different is that the Thermotec heat wrap come with a sticker

Edited by megabob, 08 January 2009 - 10:33 AM.

[Dan]

Err, have you actually read this thread? Same as what?

[Strontium Dog]

Err, have you actually read this thread? Same as what?

Yes, the link I posted is for an aluminium/ceramic coating that you paint on and bake in the oven. I do know folk who have used it without baking and it seems just fine. It works very well and lasts even on turbo cars. You can even do the inside just like my Aussie dp too if you want! And you can polish it up to a near chrome finish using a stainless brush on a drill if blings your thing!!!

Edited by Strontium Dog, 08 January 2009 - 10:59 AM.

[Dan]

Sorry Strontium, I was refrring to Megabob writing this:

same here the Thermotec heat wrap was for my saxo but i soon abandoned that and used it on my mini

[Strontium Dog]

Sorry Strontium, I was refrring to Megabob writing this:

same here the Thermotec heat wrap was for my saxo but i soon abandoned that and used it on my mini

No worries Bud, mine was meant for Bob too!

Cheers, Si.

[fatmini]

the heat wrap wasnt used to avoid corrosion just reduce temp of engine compartment and sarrounding area of exhaust where it runs close to the body ,as mine is fiberglass

but ultimatly made it worse by setting it on fire ,lol are well u live and learn !!

every days a school day !

[1275 SPRITE]

Hi,

Talking of manifolds, I currently have the mild steel LCB setup on my 1293. I bought a 3into1, not sure if its mild or stainless off someone who used to race a 1293 at 120+ bhp. He used the 3into1 on his mini, which is wrapped. He said he used to have to run the heat wrap because if he didn't then it used to melt something on the twin HIF44 setup he used to run. I bought it off him, but have heard it might be too big for my engine setup. Its basically a 1293, HIF 44 and a few other mods producing 90bhp. Would people in their experience reccomend fitting this manifold to my car?

My LCB is blowing at the top under the carb, and I think its split, so would like to fit the 3into1. The only problem is that the 3into1 is the same size diameter as the 2" link pipe, so I would need to buy a sleeve to join them.

Any thoughts??

Thanks.