Exhaust options
Discussion
I am looking to replace the shot exhaust gaskets on my Chim soon and i thought while the exhaust is off (or can be off) i might look at increasing the noise!
I've had the car about 5 months and i guess i've got used to the volume level, it's a totally stock car with no mods so i have been thinking about taking the plunge.
The thing is there seem to be so many options it's hard to make a decision.
I don't really want to go down the decat route so that narrows it down to silencer box tinkering. I have read of people doing straight through conversions and of others going down the cherry bomb route. With regard to the latter i had a look on ebay and the ones i found are around the 30-40 mark, are these the right ones?
Basically looking for thoughts and ideas on which way to go, thanks in advance.
I've had the car about 5 months and i guess i've got used to the volume level, it's a totally stock car with no mods so i have been thinking about taking the plunge.
The thing is there seem to be so many options it's hard to make a decision.
I don't really want to go down the decat route so that narrows it down to silencer box tinkering. I have read of people doing straight through conversions and of others going down the cherry bomb route. With regard to the latter i had a look on ebay and the ones i found are around the 30-40 mark, are these the right ones?
Basically looking for thoughts and ideas on which way to go, thanks in advance.
Can't give you a scientific answer other than it sounds loud and aggressive - comments have included "sounds like the four horsemen of the apocalypse"
Turns heads !
Can't tell you how to do it either - I bought it like that
ETA - it's a 500
2nd edit - still got cat too, although precatse are coming out as we speak
Turns heads !
Can't tell you how to do it either - I bought it like that
ETA - it's a 500
2nd edit - still got cat too, although precatse are coming out as we speak
Edited by Jammy Dodger on Saturday 30th July 21:50
Edited by Jammy Dodger on Saturday 30th July 21:50
Jammy Dodger said:
Can't give you a scientific answer other than it sounds loud and aggressive - comments have included "sounds like the four horsemen of the apocalypse"
Turns heads !
Can't tell you how to do it either - I bought it like that
Love the four horseman comparison!Turns heads !
Can't tell you how to do it either - I bought it like that
I've been told mine sounds like an aircraft and a "war machine"...
I did my own Cherry Bomb conversion, and the end result is just what I was after - nice deep sound but not excessively loud. If you go down this route you will need the Cherry Bombs specially made, which is no problem for the supplier (Custom Chrome) as they can make them any size you want.
To fit inside the existing silencer box, you'll need 3" diameter Cherry Bombs, with a body length (i.e. the fat portion) of 12". I wanted the ends of the Cherry Bombs to fit over the stubs that are left when you cut-out the existing perforated tubes, which means that the Cherry Bomb entry & exit pipes need an ID of 2.125".
The job itself wasn't too bad to do. I cut the silencer box open with an electric jigsaw & removed the perforated tubes with a combination of disc cutter, angle grinder & hammer'n'chisel. The hardest part was actually holding the silencer body closed again so that I could weld it up. Some strong straps would have been handy (like seat belt material).
I have a series of photos showing how it was done. I can upload them to Photobucket & post the link on here if you're interested.
To fit inside the existing silencer box, you'll need 3" diameter Cherry Bombs, with a body length (i.e. the fat portion) of 12". I wanted the ends of the Cherry Bombs to fit over the stubs that are left when you cut-out the existing perforated tubes, which means that the Cherry Bomb entry & exit pipes need an ID of 2.125".
The job itself wasn't too bad to do. I cut the silencer box open with an electric jigsaw & removed the perforated tubes with a combination of disc cutter, angle grinder & hammer'n'chisel. The hardest part was actually holding the silencer body closed again so that I could weld it up. Some strong straps would have been handy (like seat belt material).
I have a series of photos showing how it was done. I can upload them to Photobucket & post the link on here if you're interested.
theironduke said:
Jammy Dodger said:
...or you could take the rockwool/fibreglass packing out of your silencer..
What sort of increase does this give and is the "tone" similar?
every time I start her (or was anyway 
) It makes women faint, small children jump up and down, and grown men grin 
ETA: I also consider this to be a service to the community as it's enriching the lives of those who live nearby
Edited by Chilliman on Sunday 31st July 10:00
Chilliman said:
Mine is same as Jammy's, silencers are empty and it's every time I start her (or was anyway ) It makes women faint, small children jump up and down, and grown men grin
ETA: I also consider this to be a service to the community as it's enriching the lives of those who live nearby
Do yours still have perforated pipes but with no rockwool? or do they have solid pipes inside the silencer too? every time I start her (or was anyway ) It makes women faint, small children jump up and down, and grown men grin ETA: I also consider this to be a service to the community as it's enriching the lives of those who live nearby
Edited by Chilliman on Sunday 31st July 10:00
Timja, I believe they're still perforated, although I'm not 100% sure as like Jammy mine were done by the previous owner. Sound is just king awesome... not better than sex, but not far off
on second thoughts, probably better than bad sex... (whatever that is)...
on second thoughts, probably better than bad sex... (whatever that is)...
Edited by Chilliman on Sunday 31st July 15:37
haircutmike said:
I heard Garlick's exhaust note at the weekend, straight through and decatted.
You don't want that, unbelievably noisy!
2nd - mines like that at the mo, while i did some work to the box. You don't want that, unbelievably noisy!
FAR too loud, altough the note at 4-5k is EPIC
im welding the box back in once i get hold of some of those rubber gromet/doughnuts that attach it to the support plate - anyone know what they are off?
darkcat said:
2nd - mines like that at the mo, while i did some work to the box.
FAR too loud, altough the note at 4-5k is EPIC
im welding the box back in once i get hold of some of those rubber gromet/doughnuts that attach it to the support plate - anyone know what they are off?
I need a couple as well!FAR too loud, altough the note at 4-5k is EPIC
im welding the box back in once i get hold of some of those rubber gromet/doughnuts that attach it to the support plate - anyone know what they are off?
e635815 said:
S7Paul said:
I have a series of photos showing how it was done. I can upload them to Photobucket & post the link on here if you're interested.
Yes, please...Would be happy to get inspired by your work. I am in full preparation of next winter's job. http://s127.photobucket.com/albums/p131/s7paul/TVR...
The only photo missing (because I forgot to take it) was one of the silencer just before I closed it back up. I re-used the wadding to pack around the Cherry Bombs. This may not have been necessary, but I did it for 4 reasons:-
1) Because you can't weld all round the Cherry Bomb unless you completely open up the silencer box, so I wanted to pack wadding around the part of the joint that wasn't welded.
2) Just in case it sounded at all tinny when I'd finished, I assumed the wadding would help in this respect.
3) Because the tightly packed wadding helps to support the metalwork when you're re-forming it back into shape prior to welding.
4) Because I had a bag full of wadding spare!
S7Paul said:
I did my own Cherry Bomb conversion, and the end result is just what I was after - nice deep sound but not excessively loud. If you go down this route you will need the Cherry Bombs specially made, which is no problem for the supplier (Custom Chrome) as they can make them any size you want.
To fit inside the existing silencer box, you'll need 3" diameter Cherry Bombs, with a body length (i.e. the fat portion) of 12". I wanted the ends of the Cherry Bombs to fit over the stubs that are left when you cut-out the existing perforated tubes, which means that the Cherry Bomb entry & exit pipes need an ID of 2.125".
The job itself wasn't too bad to do. I cut the silencer box open with an electric jigsaw & removed the perforated tubes with a combination of disc cutter, angle grinder & hammer'n'chisel. The hardest part was actually holding the silencer body closed again so that I could weld it up. Some strong straps would have been handy (like seat belt material).
I have a series of photos showing how it was done. I can upload them to Photobucket & post the link on here if you're interested.
Have you a You Tube link that you could post to show the sound created etc,as i am thinking of doing the convertionTo fit inside the existing silencer box, you'll need 3" diameter Cherry Bombs, with a body length (i.e. the fat portion) of 12". I wanted the ends of the Cherry Bombs to fit over the stubs that are left when you cut-out the existing perforated tubes, which means that the Cherry Bomb entry & exit pipes need an ID of 2.125".
The job itself wasn't too bad to do. I cut the silencer box open with an electric jigsaw & removed the perforated tubes with a combination of disc cutter, angle grinder & hammer'n'chisel. The hardest part was actually holding the silencer body closed again so that I could weld it up. Some strong straps would have been handy (like seat belt material).
I have a series of photos showing how it was done. I can upload them to Photobucket & post the link on here if you're interested.
CHIMV8 said:
Have you a You Tube link that you could post to show the sound created etc,as i am thinking of doing the convertion
Unfortunately not. It's definitely louder than standard, but not to the extent that it becomes annoying. My daughter was sat behind me in the traffic going into Goodwood earlier this year, and she couldn't hear her MX-5 engine as mine (on tickover) was drowning it out. It's nice & deep & sounds great when you put your foot down. I'm happy with the sound as it doesn't have that slightly hollow effect that some of the "straight through" conversions seem to have.The best thing I can offer is that if you send me an email with a contact number I can give you a ring, then take the phone outside & start her up.
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