Exhaust mods ...Quiet (ish) to Loud to Insane

Exhaust mods ...Quiet (ish) to Loud to Insane

Author
Discussion

mattus

Original Poster:

160 posts

200 months

Friday 11th April 2014
quotequote all
I've been looking into exhaust mods for a while on the Tuscan to 'solve' a couple of problems :

1) Cans potentially 'falling' off ,via the weakened stub on the rear box
2) The ability to pass track day noise levels , but being able to have pops and bangs and 'TVR sound' on the road ..

Hopefully this could be useful to other Tuscan owners with this type of quandry.

My current set up on my Sagaris engined 2000 Mk1 Tuscan is Ed Quick (conical) decats, a std 54mm (non S) exhaust (Zircotec coated manifold and decats), with the intermediate 'cherry bomb' style 'silencers' mid section (over the chassis plate), into empty back boxes, into carbon can type fully sleeved (loud) cans. The noise level on this set up is very ' TVR' ....lots of pops and bangs, a nice speed six sound and relatively loud (maybe too loud for long journeys) ...and additionally it would never meet <105db static noise levels on track.

I looked at various threads on back box removal and replacement with straight through pipes etc ...and decided that was the way to go ...but also with the added option of a quiet and noisy system using easy fit Interchangeable parts..

Graham, at Exhausts by design (Tingewick) fabricated the following system which ticked all my boxes :

The idea was to have a quiet system :
Replace the'empty' back boxes with a baffled/packed silencer and fit baffled 'quiet' cans

and a loud system :
Sraight through pipe (removal of the back boxes) and loud cans.

...and both systems being fabricated to allow easy removal and interchangeability/replacement with each other ...

So this is the new quiet system : back box silencers + quiet cans


and this is the intermediate system : back box silencers + loud cans


and this is the loud (insane!) system:


Slip joints are inserted into the straight section of pipe after the 'cherry bombs' and brackets or clamps for the end cans, together with the existing straps .

Quiet to noisy 'fitment' takes about 15 mins .....I reckon the quiet system will be ~95db ....and the noisy system is hilarious ...probably 125 db plus ...it sounds like a spitfire engine (or what i imagine one would sound like ..)laughnutssilly ....It's much, much louder than the decat, back boxes and loud cans ...

I'm really pleased with the results and all respect to Graham for fabricating such a simple and interchangeable system...that fits together soooooo well ...

Heres a few more piccys:









Have fun, hopefully see you at Burghley ..



Edited by mattus on Friday 11th April 22:50

S6 Devil

3,556 posts

233 months

Friday 11th April 2014
quotequote all
That looks fantastic. Can I ask the cost?

mattus

Original Poster:

160 posts

200 months

Friday 11th April 2014
quotequote all
Yup , I'm sure Graham won't mind ..it was £450...
set of silencers , set of straight thru' pipes , all new clamps , mods on fitting to make it a perfect fit ...well chuffed .
The welding and workmanship / attention to detail is really good .

S6 Devil

3,556 posts

233 months

Friday 11th April 2014
quotequote all
mattus said:
Yup , I'm sure Graham won't mind ..it was £450...
set of silencers , set of straight thru' pipes , all new clamps , mods on fitting to make it a perfect fit ...well chuffed .
The welding and workmanship / attention to detail is really good .
How long did he need the car for or did he make it and then mod to fit?

mattus

Original Poster:

160 posts

200 months

Saturday 12th April 2014
quotequote all
Graham had the car in his workshop for ~2 days ....

MGBGTChris

31 posts

137 months

Saturday 12th April 2014
quotequote all
Easy fitment and a high level of quality, it looks very nice indeed!

Is there maybe a possibility of making a little sound/video clip to give us a proper impression?

AlanQ

209 posts

284 months

Wednesday 16th April 2014
quotequote all
Just got my car back from having a similar mod, basically a rear silencers delete option.

I had the rear silencers replaced with straight through pipes but had the originals flanged so they can easily be swapped back if I want.

My other option at the moment is then sleeve the cans or run them standard. Just tried it with straight through and sleeved and it sounds superb with lots of pops and bangs but to be honest is a bit much when really on song at high revs. Going to test more over Easter but I'm leaning towards straight through with std cans at the moment smile

Dickie Dastardly

718 posts

166 months

Wednesday 16th April 2014
quotequote all
AlanQ said:
Just got my car back from having a similar mod, basically a rear silencers delete option.

I had the rear silencers replaced with straight through pipes but had the originals flanged so they can easily be swapped back if I want.

My other option at the moment is then sleeve the cans or run them standard. Just tried it with straight through and sleeved and it sounds superb with lots of pops and bangs but to be honest is a bit much when really on song at high revs. Going to test more over Easter but I'm leaning towards straight through with std cans at the moment smile
I'm pretty sure those silencers are actually just empty boxes, the silencing is in the end cans.

I fitted new end cans 10mths ago which were straight through with no wadding, I’ve just sent them away to get some deafening added - they are just a bit loud inside the cab. I've temporarily refitted my original cans which had been sleeved, they are much quieter inside the car - given (being sleeved) they are straight through it must be down to the wadding between the inner sleeve and outer casing.

tongue out


ChrisTuscan

30 posts

125 months

Wednesday 16th April 2014
quotequote all
Should the standard carbon end cans on a Tuscan have any silencing ability? Mine are just straight through and the car is obscenely loud - far too loud to be honest it has a really nasty raspy blat when you rev the engine. I expected them to be similar to the end can on a motorbike with a perforated tube through them and wadding.

I was hunting round for some motorbike cans to replace them with to try and take some of the rasp out of the exhaust note because it just sounds awful. The only thing I can equate it to is when you start an engine with only the manifolds connected.

Dickie Dastardly

718 posts

166 months

Wednesday 16th April 2014
quotequote all
ChrisTuscan said:
Should the standard carbon end cans on a Tuscan have any silencing ability? Mine are just straight through and the car is obscenely loud - far too loud to be honest it has a really nasty raspy blat when you rev the engine. I expected them to be similar to the end can on a motorbike with a perforated tube through them and wadding.

I was hunting round for some motorbike cans to replace them with to try and take some of the rasp out of the exhaust note because it just sounds awful. The only thing I can equate it to is when you start an engine with only the manifolds connected.
The silencing is in the end cans Chris, if the can is standard then you'll see the perforations inside it running the full length (it's still straight through though), in my opinion they are fairly quiet as standard. If yours is very loud maybe it's been sleeved, could also have been decatted??

ChrisTuscan

30 posts

125 months

Wednesday 16th April 2014
quotequote all
Thanks for the info - I assume they must be sleeved then.

I will have a look tomorrow and see if I can pull the sleeves out.

Dickie Dastardly

718 posts

166 months

Thursday 17th April 2014
quotequote all
If sleeved Chris they'll be spot welded in place.

Cats

994 posts

174 months

Thursday 17th April 2014
quotequote all
Might not be. Mine are blue flame straight through cans. Just straight through pipes from the factory no silencing whatsoever and are just for decoration!
When they were available they came either as straight through or perforated.
If you hold one up with your fingers and give it a tap it's like a miniature version of Big Ben laugh
No wonder it's deafening