Beginners help required

Beginners help required

Author
Discussion

Hunter T

Original Poster:

401 posts

177 months

Sunday 15th October 2017
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I see a lot of posts about sleeveing exhausts. I’m not sure what this is. Is it done on the centre box or on the tail pipes? Is it easy to do? Is it possible to get a louder noise with pops and bangs by just replacing the tail pipes? I dont even know what sleeveing involves. Any help or advice would be great. Is there anywhere in the midlands that do it?

S6 Devil

3,556 posts

233 months

Sunday 15th October 2017
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It's the cans that are sleeved. May be easier to buy the sleeved cans and keep your unsleeved for track days etc http://www.ebay.co.uk/itm/TVR-TUSCAN-SAGARIS-CARBO...

nawarne

3,090 posts

260 months

Sunday 15th October 2017
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Hunter T said:
I see a lot of posts about sleeveing exhausts. I’m not sure what this is. Is it done on the centre box or on the tail pipes? Is it easy to do? Is it possible to get a louder noise with pops and bangs by just replacing the tail pipes? I dont even know what sleeveing involves. Any help or advice would be great. Is there anywhere in the midlands that do it?
Pretty easy to DIY...IMHO!

Sleeve the carbon/standard (rear) cans by inserting some 51mm OD thinwall stainless tube into the can. This should be a reasonable interference fit - and as you tap the new tube in you'll see it gradually covering the perforated internal tube of the original....effectively negating the sound absorption of the standard can.

If you're de-catted, the noise is a bit OTT for long runs - in my opinion.

Just find a local supplier of the stainless tube, get it cut to length (500mm for each side, if my memory serves me right), then un-clamp each can and with it on the bench tap the tube in. A bit of silicon grease may help tapping the new tube in.

Nick

Hunter T

Original Poster:

401 posts

177 months

Sunday 15th October 2017
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Cheers for the info guys, Top men 👍

S6PNJ

5,182 posts

281 months

Sunday 15th October 2017
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nawarne said:
Pretty easy to DIY...IMHO!

Just find a local supplier of the stainless tube,
Or go to any decent exhaust place and they will probably have sections of stainless tube on their exhaust racks - get 2 lengths for (hopefully) beer money!

Hunter T

Original Poster:

401 posts

177 months

Thursday 19th October 2017
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Well yesterday I bought the sleeved carbon cans suggested on here and love the result.

TheCNCman

53 posts

103 months

Friday 8th December 2017
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I’ve got no cat and sleeved cans. Just had the interior done and completely sound proofed the interior so that long runs don’t result in my ear drums seeping claret!

The sound can be a lot of fun, but can be extremely antisocial!!!! I mean, I can’t even do track days because the car gets a prohibition order slapped on it for being too loud.

Hunter T

Original Poster:

401 posts

177 months

Sunday 10th December 2017
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How did you sound proof the cab?

phillpot

17,115 posts

183 months

Sunday 10th December 2017
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Hunter T said:
How did you sound proof the cab?
Dynamat at a guess?

MrChips

3,264 posts

210 months

Sunday 10th December 2017
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When i did mine i used a cheaper version of dynamat and then some relatively thick acoustic foam. Dynamat and similar products work better on metal bodies as they're designed to dull the resonating effect of a panel. Fibreglass doesn't really respond in the same way so a combination of both seems to do a better job in my experience.

One of the better things I did was to put it on the back of the door cards as that had a great impact and reduced the sound levels in the cabin.

m4tti

5,427 posts

155 months

Sunday 10th December 2017
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Sound proofing... then just take the roof off in summer.

TheCNCman

53 posts

103 months

Tuesday 2nd January 2018
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Hunter T said:
How did you sound proof the cab?
I used dynamat. Also put it into the doors. Has definitely made a difference. I can hear myself think and my nose bleeds have stopped wink