Moderator
Originally Posted by 130man
You don't wrap cast iron manifolds or they will crack, the wrap retains too much heat.
Manifolds and turbos are wrapped on some race cars to minimise lag.
Wrapping headers is OK, I ran wrapped mild steel extractors/headers on a race car but I used to run 0W-5 oil too and I wouldn't use that in a road car.
Jet Hot, HPC and Swain Tech coatings are apparently OK on cast iron manifolds.
OK,
Just priced the Thermotec from Rocket Ind howver the bloke couldn't confirm it was a silica base but confirmed the brand. Am I correct that the Thermotec are all silica based products?
Also when you "bandage" the exhaust you start under the turbo to past the transfer case. With the "flexable seciton" about a foot below the trubo do you leave this out.
Thanks all.
Master
Hi Scott, I have just examined the packaging of my roll of Thermo-tec and can't see a definitive statement of what it is made from. I recall the web site mentions silica somewhere.You are right to avoid the flexible joint in the exhaust below the turbo as the material will probably crack with the movement. The instructions on the pack mention "curing" with the heat so I imagine it will go hard once it gets hot.This would set it in place on the pipe so it won't come loose. Rick130 has had no problems in 4 years.Cheers, 130man.
Fossicker
G'day Scott,
Just wondering if you had completed the project and what difference you have noticed regarding heat.
Cheers
Boots
Boots,
Haven't done it will probably take a few months.
What a pain in the rear end it was trying to get technical information on the Thermotec wrap. The variation in price for the same product in the US and Australia can be 50% including allowing for postage to Australia.
In the end I went for an alternative from this bloke jandjash@bigpond.net.au who was the only person who could explain his product that I could get on the phone.
The blokes at rocket I rang three times while they had Thermotec 50ft rolls they had no idea if it was fibreglass based, no idea on how much I needed. Only new what they could read on the box. If I needed 100ft roll they would have to import which wasn’t a problem but gave me three different prices.
On the last (fourth) call telling them someone was “going to ring back” they just seemed disinterested.
Moderator
AFAIK Cool-it Thermo-tec has always been a silica based wrap.
[edit]
Well, I'm wrong.
Back in the day when I last bought some ('95) they advertised it as a silica based wrap, but lo and behold there is none of that on their current website, so I went searching.
If all else fails, check out the MSDS. http://www.thermotec.com/files/resou..._wrap_msds.pdf
Fibreglass fibres 90-95% and a vermiculite coating 10-5%
[2nd edit]
Actually glass is basically silica[ame="http://en.wikipedia.org/wiki/Silicon_dioxide"]Silicon dioxide - Wikipedia, the free encyclopedia@@AMEPARAM@@/wiki/File
Fossicker
Hi
not sure if this will help as I am not all that mechanically minded but found this product on the lucky 8 website to cool the R380:
Lucky8 Llc. - Take the road less traveled...
Moderator
The OE oil cooler/t-stat housing and adding a proper heat exchanger on a Defender is discussed on the first page
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