I've just wrapped my exhaust headers prior to lining the engine bay with sound insulation in a bid to get my noise level down from the 106.9dB I
managed at the last SVA.
I fired up the engine and was suprised to see that the exhaust wrap started smoking. I'm guessing that this is just some manufacturing
residue that burns off the first time that the wrap gets up to heat, but would be grateful if someone could confirm.
The wrap is standard 50mm white glass wrap from Merlin - yes I am very itchy after installing it
Nick
Stinks as well doesn't it? It will stop smoking and smelling after a few miles
How neat did you get it ? I am told its a sod.
Got mine to do in a week or so.
soak it in water first,makes it a lot easier to fit
I found it quite easy to get neat. Smells of cooking biscuits / pop corn for a little while. Not nasty in my experience though it might depend on which make it is!!!
Quite normal! The self-adhesive stuff smells rank. I stunk out Chadderton VOSA centre!
quote:
Originally posted by big_wasa
How neat did you get it ? I am told its a sod.
Got mine to do in a week or so.
The smoking scared the life out of me! I was 1 mile up the road to an MOT - the first proper run in the car - when smoke started coming out from under the bonnet. Stopped, took off the bonnet, and saw that it was the wrap!
Wow - 7 replies within 15 minutes - locostbuilders to the rescue again!
So does anyone know hos I stop this DAMN ITCHING?????
Seriously, I've never had glassfibre itching this bad - its driving me nuts. I'm trying to cook Easter dinner (duck - yum) and keep having
to run my hand under cold water to try and relieve the itching.
Nick
quote:
Originally posted by nstrug
So does anyone know hos I stop this DAMN ITCHING?????
)
Duck..I'm inviting myself over to dinner! 
Take a long shower with plenty of soap, itching should go.......
Does exhaust wrap make much of a difference in terms of sound insulation?
Don't worry the itching will stop in a week or two!
quote:
Originally posted by iiyama
Take a long shower with plenty of soap, itching should go.......
Yeah had that with Jalapenos... You don't do it twice that's for sure!
The exhaust noise is measured from the exit pipe end and any noise from the headers will not contibute to the measured noise, wrapping the headers will make little difference to you very load exhaust. You are not even close at 107db and need to either repack the exhaust, but with 6 db points to drop that is a big order of fit a can that is much more up to the job. I welded in a db reducer that dropped me to 96 db, my fulling was alover the place but passed the noise test.
quote:
Originally posted by snapper
The exhaust noise is measured from the exit pipe end and any noise from the headers will not contibute to the measured noise, wrapping the headers will make little difference to you very load exhaust. You are not even close at 107db and need to either repack the exhaust, but with 6 db points to drop that is a big order of fit a can that is much more up to the job. I welded in a db reducer that dropped me to 96 db, my fulling was alover the place but passed the noise test.
Bit late know but wash your hands in cold water that way the pours in the skin dont open and it stops the fiber glass going in further