Elan S1 Performance Exhaust

PostPost by: Certified Lotus » Mon Sep 25, 2017 1:24 am

When I rebuilt my Elan I ordered and installed the complete Tony Thompson 2 inch Fast Road Exhaust system (header, pipe and muffler). The sound is aggressive but not overly loud and I really like it. Except for one thing....after 2 years the muffler baffles blew out and it was horrible sounding.

Here is a video of the exhaust sound before the baffles blew out:

https://www.youtube.com/watch?v=dgrl1NBuaWc

As most of you probably know, there aren't many exhaust companies that make a performance muffler for the Elan S1 as it is an unusual shape due to the area it has to fit into. So I knew it had to be custom made. But I didn't want to take a chance of what it would sound like. I had heard the sound of Nouvalari Engineering exhaust systems on a number of sports cars in my area over the years and was very impressed. So I contacted them in the UK to inquire about making me a custom exhaust for my Elan S1. They were happy to do so. Plus, they guarantee their systems for life, so this was a worthwhile exercise.

My new exhaust arrived from the UK. The photos are of the Nouvalari muffler (it has the "ribs" on it) next to the Tony Thompson muffler.
img_1323-1.jpg and

img_1322-1.jpg and


Now I just need some time to install the new muffler and make a new video of the sound of the exhaust. Stay tuned (no pun intended).
Glen
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PostPost by: el-saturn » Mon Sep 25, 2017 3:47 pm

-if we'd assume the TTR fits, which i do! and by the pictures assume there's a few geometrical differences, then you'll probably need a strong and athletic wife (or so) to get it fitted! sandy PS my "homemade" muffler (2inch from from to rear) is on this site, sounds lovely and fits perfectly! - this one may too, btw: just looks awkward!
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PostPost by: gjz30075 » Mon Sep 25, 2017 4:32 pm

Looking forward to the sound/video clip!
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PostPost by: Certified Lotus » Mon Sep 25, 2017 11:31 pm

el-saturn wrote:-if we'd assume the TTR fits, which i do! and by the pictures assume there's a few geometrical differences, then you'll probably need a strong and athletic wife (or so) to get it fitted! sandy PS my "homemade" muffler (2inch from from to rear) is on this site, sounds lovely and fits perfectly! - this one may too, btw: just looks awkward!


The TTR fits perfectly and the Nouvalari is identical so there will not be a problem with it fitting. Interestingly enough the original muffler was the same design, although small diameter exhaust pipe.
Glen
05 Elise - Back where I started
65 Elan S2 - 26/4055
72 Europa - 74/2358R
69 Elan S4 - 45/7941
64 Elan S1 - 26/0379
12 Colin 30 - Lotus Racing Kart
07 Exige S - Wicked Road/Track Car
07 Exige S - Fast Road/Track Car
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PostPost by: Certified Lotus » Mon Sep 25, 2017 11:32 pm

gjz30075 wrote:Looking forward to the sound/video clip!


As soon as I have it installed!
Glen
05 Elise - Back where I started
65 Elan S2 - 26/4055
72 Europa - 74/2358R
69 Elan S4 - 45/7941
64 Elan S1 - 26/0379
12 Colin 30 - Lotus Racing Kart
07 Exige S - Wicked Road/Track Car
07 Exige S - Fast Road/Track Car
06 Elise - Track pack
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PostPost by: Keith Scarfe » Tue Sep 26, 2017 2:24 pm

Bit late now sorry, but you could have just tried repacking the original one:
lotus-twincam-f39/how-repack-non-repackable-silencer-t36438.html
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PostPost by: Certified Lotus » Wed Sep 27, 2017 11:45 am

Keith Scarfe wrote:Bit late now sorry, but you could have just tried repacking the original one:
lotus-twincam-f39/how-repack-non-repackable-silencer-t36438.html


Keith, you did an excellent job taking apart your muffler and re packing it. Nicely done! I am looking for a dynamic exhaust sound and figured that an exhaust specialist for sports cars would have it figured out. I will soon find out.
Glen
05 Elise - Back where I started
65 Elan S2 - 26/4055
72 Europa - 74/2358R
69 Elan S4 - 45/7941
64 Elan S1 - 26/0379
12 Colin 30 - Lotus Racing Kart
07 Exige S - Wicked Road/Track Car
07 Exige S - Fast Road/Track Car
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PostPost by: ROADRUNNER » Wed Sep 25, 2019 8:25 am

Apologies for resurrecting an old thread, but I'm interested to know what difference in sound the replacement muffler provided ? I'm about to order one from Nouvalari too.
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PostPost by: Certified Lotus » Wed Sep 25, 2019 9:56 am

Sorry for never posting a video of the Nouvalari silencer sound. I?ve just finished a 3 year frame off restoration on a 72 Lotus Europa Twin Cam that had me distracted.

The idle is very throaty. Much more than the TTR silencer. People turn their heads when you start the engine. It?s a performance exhaust so it?s loud, but not over the top loud. Under full throttle it?s exceptionally loud (won?t be able to use this at most race tracks). Cruising speed it?s great and no drone.

Just like the TTR silencer I?ve blown through the packing the Nouvalari in 2 years. They all seem to do that. Which means it?s even louder when your on it. Other cars know your coming........
Glen
05 Elise - Back where I started
65 Elan S2 - 26/4055
72 Europa - 74/2358R
69 Elan S4 - 45/7941
64 Elan S1 - 26/0379
12 Colin 30 - Lotus Racing Kart
07 Exige S - Wicked Road/Track Car
07 Exige S - Fast Road/Track Car
06 Elise - Track pack
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