9 replies to this topic

[maieth]

When my engine finally goes back in this week I'll also finally be replacing the stock manifold with a maniflow LCB.
As the stock part has a heat shield fitted, will I need to shield the new manifold too? Is it worth me getting some exhaust wrap or is there no real danger to the electrics and/or fuel rail? (Which is what I'm presuming the original shield was fitted for).

[Fast Ivan]

Get some wrap

[brivinci]

Are you getting a SS or steal LCB? The story goes that a wrapped steal header will rust very quickly. Some dont recommend it. I have not experience with it but have read that time and time again. There are other options. Ceramic coating is one of them.

 

I had the exact same question as you did. I was actually going to retro fit the heat shield to the LCB. Will need little spacers added to mount. Was also thinking of adding a bit of heat deflectant to help further. Not really sure how affective it would be. Coating would be the best route but $$$

[maieth]

Standard steel, so I'm a bit concerned about the rot people have reported, particularly as its not a daily driver.

[Fossy313]

I spoke to maniflow about the lcb I ordered and they told me quite sternly not to wrap my manifold stall, how come??

[maieth]

I spoke to maniflow about the lcb I ordered and they told me quite sternly not to wrap my manifold stall, how come??

 

That's interesting, but pretty much falls in line with what I'v read on here now. 

I'm going to lave it and just keep an eye on things.  If it looks like the area's getting too hot I'll have to look at alternatives

[Fast Ivan]

well that is interesting because they certainly sell heat wrap and my maniflow has heat wrap on it....ummmm think I might look at taking it off

[Fossy313]

Hmmm I don't want to make you start taking it off because of what I have said, rob you would know a lot more than me I. Just an amateur at this sort of thing.. What happened was my manifold was heating up quite seriously after I had fitted the full system, so I contacted maniflow and they said to check the timing etc (which I can't alter anyway as its an mpi/ Ecu) the engine temp hasn't gone up over the normal temp mark, and I added the new temp sensor which has sorted it but I have t done much to it, anyway, The e mail they ent to me said DO NOT WRAP, in caps and everything....so I haven't.... I must admit I didn't know at the time what wrapping meant but my mate informed me.

Best thing may be to contact them. Be interested to why, being as though rally cars mainly wrap their manifolds and exhaust so what can't you with the maniflow...

Edited by Fossy313, 01 August 2013 - 06:53 PM.

[HARBER07]

 They are most probably just covering their asses. I've wrapped several steel headers and I've never had a hint of a problem with any of them. The issue is much less to do with the rust,  but more that its almost impossible to wrap a manifold evenly. Heat can build up in sections of the manifold with several layers, and as it heats/cools at different rates it can cause cracking. Much more of a problem on stainless manifolds. 

[maieth]

I agree with Harber. I think maniflow are probably covering themselves. I've been reading a bit more widely about wrapping manifolds and found plenty of horror stories of rot and rust, warped pipes, cracked welds, all sorts. I'm sure they're all issues that happen in a minority of cases, but it still raises concern