115db LOL. Woops.
115db LOL. Woops.
As a nerdy aside, I was reading the Skyline service manual, and on one model there seems to be a system on the twin-exit exhaust to electrically shut one of the exits? Akyone know if this was for noise issues, and did it ever work well?
Yeah, it was fitted to some of the R33 GTS-T's but I've never seen it on a car over here. Some Mitsubish GTO's also have it.Originally Posted by John Bennett
As a nerdy aside, I was reading the Skyline service manual, and on one model there seems to be a system on the twin-exit exhaust to electrically shut one of the exits? Akyone know if this was for noise issues, and did it ever work well?
And Chris was telling me how it was quieter after the RB lump went in
Thats the thing, I'm sure it does sound a fair bit quieter than it did with the CA with the same NUR Spec R with the bung out when you're driving around normally (and Chris is nodding as I type this). I've never fitted the bung in it since the RB went in and with the CA I used to drive with the bung in most of the time because of the resonance and noise.And Chris was telling me how it was quieter after the RB lump went in
I guess at 5,000 rpm you tend to leave a lot of the sound in your wake so you don't appreciate how loud it really is.
No, fraid not - I've only ever run this engine with the big silencer in.
Sounds like you're never going to get your car on trackBit of a shame and waste...
Its hardly a waste as it was never intended to be a dedicated track car. Its my comfy (compared to my bike) daily used road car.Sounds like you're never going to get your car on track
Just chatting to Chris about it and we've got a few options to explore before GT-Battle.
Just winding you up mate
Comfy at 115db?
Well....drier than the bike then
We have a selection of silencers here now to try out
I make s14/a decat silencers using Jetex units -there was one fitted to Slipstream Ian's car at Japfest. Think he still used the Nur bung as well to be on the safe side though, so not a very useful experiment! The difference is apparent on the road though.
I use the largest oval section that will fit. It's no lower than any other part of the Nur, but of course in the centre of the car so more of a problem for speed bumps.
Jetex have a good reputation but they aren't cheap if you want stainless. Get what you pay for though
how did you get through the croft noise restrictions at the weekend?We have a selection of silencers here now to try out
power-crazed Head-Mod
We didnt get kicked off, although Kev said we were getting comments from spectators about the car being loud.
I don't see the issue its not like you're all in the middle of a housing estate is it!!
Can't imagine F1 races being halted by some little t**t running along behind the cars with a db meter!!!!!
did you play with silencers/bungs/the whole system
not really the point is it. if a racing circuit wants to keep its licence then they have to comply with local regs. and like it or not, wherever you put a circuit, there are going to be local residents who don't want noise.
Last edited by Dr Bob; 31-05-2005 at 11:01. Reason: a bit confrontational
power-crazed Head-Mod
They just didnt test
They just didnt test
power-crazed Head-Mod
I fitted a silencer from Jetex for this weekend at Wild Trax. My Nur Spec system without it was 108db without the bung and 104 with, fitting this new box in the same place as the decat pipe gave me 97ish without the bung and a whopping 86ish with it!!
Not that much performance loss with the in and the bung out either...
Same setup as me - works well dunnit
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