Tim,Originally Posted by Lancialulu
perhaps bring your sound reduction kit down with you. I have disassembled and repacked my exhaust boxes with further wadding and reduced my max rpm indicator to 6000..... but access to those extra 4dB may be useful.....
Mark
"a theory should be as simple as possible, but not simpler"
What about 'Supertrapp'?
http://www.demon-tweeks.co.uk/motors...p-on-silencers
Fitted these on mine - but varies from car to car how much noise they'll suppress, sometimes none! (And will affect performance).
Re Supertrap. Looks interesting but how to fit to a trumpet?? I guess I just need to make a more silencing expansion box for Goodwwod track days. No - I will go to 105db days elsewhere......!!!
Last edited by Lancialulu; 29-03-2017 at 22:35.
Weld the super trap to a secondary trumpet which slides up inside of the trumpet already fitted on your exhaust. Drill 1 hole in the underside of your existing trumpet/tailpipe & fit a rivnut or weldnut into the trumpet you are inserting to bolt the super trap in place.
Simple.
"You can lead a horse to water, but a pencil must be lead"
Stan Laurel
Thanks Craig. I am resolved to a longer term solution of a different back box design that can take track-day mufflers if necessary. My current box sounds superb but is in mild steel and was built in 1992 so time for a change....
Some good photos of Stratii and other nifty cars here. This was a Lancia Motor Club day, hence the predominance.
Tim and Sarah, Frederic, John and myself were in attendance. I think some of the other guys may have some videos but i'll let them put them up for viewing.
Mine was just on the 98dB limit for the static test, and I was warned (a few times) when opening it up around the circuit. Advice was to use 1 gear higher and limit the revs. Did about 100 miles and drove it home afterwards.
I'm attending a 105dB day later this month so should be able to release those constraints a little.
Mark
"a theory should be as simple as possible, but not simpler"
A great pleasure to be there with you for this great trackday!
I deligthed to meet you with your great car and drive together!
Frederic
Last edited by Stratie.fr; 02-04-2017 at 21:40.
A small one here : https://youtu.be/-mIVrvicXNc
sent you a PM
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