QUIET EXHAUSTS!
Discussion
Hi
Almost all TVR owners seem to want to make their cars faster, more powerful, louder, track ready etc. Fair enough but i don't. I love the look of the cars and would like to make it more "user friendly"! Is it possible to get much quieter exhausts/silencers for the Chimaera 4.0HC? They can still have that wonderful TVR/V8 soundtrack but without wakening the neighbourhood. I realise this would sap some power but there's plenty especially the HC version of the 4.0
My thoughts are overall:
- Quieter exhaust
- Distributor-less ignition and PROPER management system (not making excuses for the poorly mapped current system that can't handle cold weather etc. This can be twin mapped for performance or economy.
- More compliant suspension/shocks
I can just see the die hards having a sharp intake of breath and sitting down in disbelief!
Has anyone gone down this route?
Almost all TVR owners seem to want to make their cars faster, more powerful, louder, track ready etc. Fair enough but i don't. I love the look of the cars and would like to make it more "user friendly"! Is it possible to get much quieter exhausts/silencers for the Chimaera 4.0HC? They can still have that wonderful TVR/V8 soundtrack but without wakening the neighbourhood. I realise this would sap some power but there's plenty especially the HC version of the 4.0
My thoughts are overall:
- Quieter exhaust
- Distributor-less ignition and PROPER management system (not making excuses for the poorly mapped current system that can't handle cold weather etc. This can be twin mapped for performance or economy.
- More compliant suspension/shocks
I can just see the die hards having a sharp intake of breath and sitting down in disbelief!
Has anyone gone down this route?
You could fit this Jersey Exhaust..He as been trying to sell it for ages..a bit to much money!A standard exhaust will give you more power than the cut and shut so called sports exhaust due to the loss of back presure.Not sure about this one as it as a silencer in each pipe..
http://www.pistonheads.com/sales/2286209.htm
http://www.pistonheads.com/sales/2286209.htm
Edited by SILICONE KID on Saturday 11th December 18:49
captaintact said:
I can just see the die hards having a sharp intake of breath and sitting down in disbelief!
indeedy!tbh i dont find the standard system that loud, mines a 400HC. are you sure yours isnt modified??
Edited by darkcat on Saturday 11th December 21:56
Edited by darkcat on Saturday 11th December 21:58
Good point darkcat! This is my first TVR and not knowing or haven driven an "unmolested" Chimaera 4.0HC, i don't know what to expect. My wheels are larger 17" with 215-40-17 and 245-40-17 Toyo tyres so the ride is much harder i expect especially on the front where the lack of power steering is noticeable and frankly the steering is all over the place and no where as assured as my Alfa.
So it's possible other things are different too!
So it's possible other things are different too!
firstly I `d get the car checked over, full geo set up and check the steering ect.
find out if the car has been decatted,are the precats still in place? and has the silencer been sleeved, you may want to return it all to standard set up.
there are alternative ecu`s if you want to do away with the dizzy ect, my personal joice would be emerald, but it is an expensive route to take if you are keeping the car bog standard, normally this is done to allow for easy mappng changes when playing with inlets and wilder cams ect.
find out if the car has been decatted,are the precats still in place? and has the silencer been sleeved, you may want to return it all to standard set up.
there are alternative ecu`s if you want to do away with the dizzy ect, my personal joice would be emerald, but it is an expensive route to take if you are keeping the car bog standard, normally this is done to allow for easy mappng changes when playing with inlets and wilder cams ect.
SILICONE KID said:
You could fit this Jersey Exhaust..He as been trying to sell it for ages..a bit to much money!A standard exhaust will give you more power than the cut and shut so called sports exhaust due to the loss of back presure.Not sure about this one as it as a silencer in each pipe..
http://www.pistonheads.com/sales/2286209.htm
this would be an excellent choice if you want a quieter exhaust note, I made some 3" diam tailpipes for my griff and inserted 2" tail silencers inside them, and lost another 10 decibels, the beauty of these for me being that my car was running tuned equal lenght manifolds, no cats and straight through system, so it was very loud for fun driving, and pop the tail silencers in and it was more sedate for cruising ect.http://www.pistonheads.com/sales/2286209.htm
Edited by SILICONE KID on Saturday 11th December 18:49
the further you can place the silencer from the engine, the greater effect it will have, so these tail silencer inserts work very well.
as for loss of backpressure equaling less power, poppycock, try back to back testing on a dyno and you`ll discover gains, not losses.
clive f said:
as for loss of backpressure equaling less power, poppycock, try back to back testing on a dyno and you`ll discover gains, not losses.
oooh BIIIIIIG subject!! can go either way, depends on how good the seal is on the exhaust valves, and if they are a tuned manifold to supply a scavenging pulse etc....darkcat said:
clive f said:
as for loss of backpressure equaling less power, poppycock, try back to back testing on a dyno and you`ll discover gains, not losses.
oooh BIIIIIIG subject!! can go either way, depends on how good the seal is on the exhaust valves, and if they are a tuned manifold to supply a scavenging pulse etc....
clive f said:
darkcat said:
clive f said:
as for loss of backpressure equaling less power, poppycock, try back to back testing on a dyno and you`ll discover gains, not losses.
oooh BIIIIIIG subject!! can go either way, depends on how good the seal is on the exhaust valves, and if they are a tuned manifold to supply a scavenging pulse etc....Re: Less Noise.
This is not a technical reply in the least, but here goes.
My car is a standard 400 and is certainly quieter than others.
At track days it has been measured at 96db. Can't remember the exact revs but I think that was
4000rpm measured 1m from the exhaust pipes.
On one tunnel run my daughter asked me "Why is your car so quiet?
This is not a technical reply in the least, but here goes.
My car is a standard 400 and is certainly quieter than others.
At track days it has been measured at 96db. Can't remember the exact revs but I think that was
4000rpm measured 1m from the exhaust pipes.
On one tunnel run my daughter asked me "Why is your car so quiet?
I don't do track days..but a pre serp HC catted sleeved sounds nice, had freinds taking their serps with cats inline and getting the silencer sleeved and then resulting in being too loud like its been decatted and then sleeved, and then paying again to get the silencer re-welded in, ive got both cats in and sleeved and it sounds nice, also on a different note, since my temperature censore has not been working( tick over for 5 mins when cold and no high revs etc- as will flood) i have had absolutely no shunting,this was an absolute nightmare of a problem previously for me, any one had the same experience...can drive at 30 mph in 3rd at 2000 and it's like driving a normal car...Heaven!
jim.2007 said:
I don't do track days..but a pre serp HC catted sleeved sounds nice, had freinds taking their serps with cats inline and getting the silencer sleeved and then resulting in being too loud like its been decatted and then sleeved, and then paying again to get the silencer re-welded in, ive got both cats in and sleeved and it sounds nice, also on a different note, since my temperature censore has not been working( tick over for 5 mins when cold and no high revs etc- as will flood) i have had absolutely no shunting,this was an absolute nightmare of a problem previously for me, any one had the same experience...can drive at 30 mph in 3rd at 2000 and it's like driving a normal car...Heaven!
Blimey !!!!
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