Discussion
Twistygit said:
Sorry to hijack your thread, but was wondering if wrapping the manifolds is enough to stop damaging coating on chassis and melting poly bushes?
It's common these days to wrap the upper chassis rail with aluminium coated waterproof wrap. Make sure the coating is fully sealed first then wrap along the area exposed to manifold heat. Poly bushes are best protected by metal reflectors. Oh and yes, wrapping the manifolds will reduce heat damage to the chassis & bushes
bobfather said:
Twistygit said:
Sorry to hijack your thread, but was wondering if wrapping the manifolds is enough to stop damaging coating on chassis and melting poly bushes?
It's common these days to wrap the upper chassis rail with aluminium coated waterproof wrap. Make sure the coating is fully sealed first then wrap along the area exposed to manifold heat. Poly bushes are best protected by metal reflectors. Oh and yes, wrapping the manifolds will reduce heat damage to the chassis & bushes
N7GTX said:
As Bob says. I've wrapped the manifolds with exhaust wrap from Demon Tweaks - don't know how good it is but its still there after 2 years - and when I fitted poly bushes, a sheet of wrap was included to fit over the top front rear bush to help keep the heat off. That sheet is already showing signs of deterioration after just 10 months.
You dont happen to have a link do you...going to do mine over the winter too, just got no idea on how much I am going to need? 
Twistygit said:
Unfortunately I didn't get a shield with my poly bushes was thinking of making something or is there something I can buy?
These are the ones I made for mine. 
They cover most of the length of the top tube and are held in place by the Velcro along the edges. The ear with the cable tie goes over the suspension bush and ties around the wishbone. The ear is sewn on and gives double thickness insulation right at the bush.
Steve
Twistygit said:
Unfortunately I didn't get a shield with my poly bushes was thinking of making something or is there something I can buy?
I agree with Bobfather that a making a metal shield would be better. The cheap stuff in the kit has already lost its 'silver' coating despite exhaust wrap on the manifolds too.Under the bonnet and directly above the turbo I fitted a sheet of this stuff on top of the protection that TVR fitted just to protect the paintwork from any excess heat damage. Its not cheap but its peace of mind for me. It might work to protect the bushes but a metal shield I think would be better.
http://www.ebay.co.uk/itm/Self-Adhesive-Exhaust-En...
nick_mcuk said:
N7GTX said:
As Bob says. I've wrapped the manifolds with exhaust wrap from Demon Tweaks - don't know how good it is but its still there after 2 years - and when I fitted poly bushes, a sheet of wrap was included to fit over the top front rear bush to help keep the heat off. That sheet is already showing signs of deterioration after just 10 months.
You dont happen to have a link do you...going to do mine over the winter too, just got no idea on how much I am going to need? I used 1" around the tubes but with them in place it was impossible to get a complete covering. Then I used the 2" wide from the Y piece back towards the individual tubes.
I ordered 2 x 2" 25 foot rolls and 2 x 1" 25 foot rolls. I used all the 2" but only one of the 1". It depends on how much overlap you want. I did not need the second 1" but if the manifolds were off then I think you could wrap them much neater and tighter so you would probably need the second roll.
You can buy this stuff on eBay for probably a lot less?
http://www.demon-tweeks.co.uk/motorsport/heat-shie...
This is after fitting the 1". You can see the difficulty fitting it in situ.
This is before fitting the 2" which is too wide to fit cleanly around the tubes.
Don't forget you will need stainless tie wraps to hold it in place and around the fat part of the manifold I had to join 2 together.
Similar to these: http://www.demon-tweeks.co.uk/motorsport/heat-shie...
Edited by N7GTX on Sunday 30th July 08:24
Edited by N7GTX on Sunday 30th July 08:30
+1When you have taken the other pre-cat out, could I suggest you fill each manifold with water and check for leaks around the welds where the four pipes merge into large bore section of the manifold. Did this on mine and found both were leaking. Far simpler to weld repair from the inside with the pre-cats out. 
Steve_D said:
Twistygit said:
Unfortunately I didn't get a shield with my poly bushes was thinking of making something or is there something I can buy?
These are the ones I made for mine. They cover most of the length of the top tube and are held in place by the Velcro along the edges. The ear with the cable tie goes over the suspension bush and ties around the wishbone. The ear is sewn on and gives double thickness insulation right at the bush.
Steve
are they one offs? I bought a spare set of manifolds and the Y pipes to do this. I'm thinking of getting some of the DIY ceramic VHT paint to paint them. Anyone done this themselves? if so which product did you use? I'll then be wrapping in this much cheaper than the stuff sold at DT came with the stainless clips too. Looks like I could do with some of the 1" stuff too.
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