MV8 Posted August 31, 2023 Share Posted August 31, 2023 (edited) 9 hours ago, Cueball1 said: Thanks Bruce! Was going to ask if there is a popular muffler folks use. Thankfully there is a 2 bolt joint just ahead of the muffler. Easy to remove to have someone duplicate it. You could also cut the tip off, and add an offset to bring the tail pipe along the lower chassis rail inboard of the tire to the rear. That may be all you need and still very clean looking. I've seen a few configured that way. Apparently a factory option? If still not quiet enough, there are tip inserts that are also effective. Found a pic of the factory rear exit exhaust parts. I expect you'll need to cut the two bolt flange off to fit any typical muffler which are longer. An offset inlet on the muffler would help keep it close to the body. Edited August 31, 2023 by MV8 Link to comment Share on other sites More sharing options...
IamScotticus Posted August 31, 2023 Share Posted August 31, 2023 Hearing loss? Better than tinnitus! I get to enjoy the constant hissing of steam escaping somewhere inside my head. Yes, you youngsters, its a real thing. 1 Link to comment Share on other sites More sharing options...
11Budlite Posted August 31, 2023 Share Posted August 31, 2023 (edited) Agreed with the comments above about hearing loss and how important hearing protection is. Here's a photo of my old Birkin: Edited August 31, 2023 by 11Budlite 2 Link to comment Share on other sites More sharing options...
KnifeySpoony Posted August 31, 2023 Share Posted August 31, 2023 FWIW I routed my side exit exhaust to the rear with a leftward-pointing tip to try to pass sound at Laguna; I actually gained a dB lol. I also have a "trackday" exhaust from Caterham with second rear muffler (along with larger, cat-containing main muffler), but have never installed. I'm running a standard muffler with decat collector. At least half of the noise is from the intake so I think it's a losing battle. I always wear helmet/plugs, same as on bike. 1 Link to comment Share on other sites More sharing options...
Bruce K Posted August 31, 2023 Share Posted August 31, 2023 (edited) 12 hours ago, Anaximander said: Hey all you wild and crazy guys and gals. If you want to be able to hear anything as you get older, wear ear plugs, always, even before startup! The mufflers combined with the wind will eventually damage your hearing and could do it rather quickly. The only time that I don't wear earplugs in my sevenesque cars is when I am wearing a full face fully padded helmets and doing autocross which lasts for about a minute a run or less. I figure there is still a fair amount of racket but the helmet is attenuating a lot of the damaging frequencies to my tender inner ear physiology and I need to hear the groans and chatter of my tires/suspension. On my motorcycles, I still wear 29 dba attenuating earplugs with my helmets due to the wind and muffler noise. Just sayin'... From all that I have read, hearing loss is cumulative and most often does not come back after physiological damage. I have over 450k seat miles on motorcycles/open cockpit cars and I can still hear you softly sniggering that I am overly paranoid about protecting my hearing To extend Anaximander's points: I wear the same foam ear protectors to bed every night. Quiet sleep is better sleep, and the I believe eight hours of silence every night helps reverse some of that cumulative ear damage cited by Anaximander. Use that trick of rolling the plugs in one drop of hand or skin lotion before insertion. Treated plugs insert and stay in place without chafing, plus the lotion makes them more efficient at reducing sound. Edited September 1, 2023 by Bruce K Link to comment Share on other sites More sharing options...
Cueball1 Posted August 31, 2023 Share Posted August 31, 2023 Earplugs are definitely a must do sadly. Mild tinnitus and it seems to be ramping up lately anyway. High pitched warble. Ugh. Even with good foam plugs in yesterday it seemed pretty loud. And fast. 😉 Link to comment Share on other sites More sharing options...
Bruce K Posted September 1, 2023 Share Posted September 1, 2023 (edited) Quercitin is a terrific natural nutriment remedy for tinnitus. Also helps remediate high blood pressure, fights cancer and many other benefits. About 2 grams per day is an ordinary adult does (1,000 mg morning and night). Here's an article on the subject: https://treblehealth.com/quercetin-and-tinnitus/#:~:text=Quercetin is a vasodilator%2C which,may help support your hearing. I've used plugs and quercitin for years to protect both my hearing and health. I've been around loud cars and power machines for decades, and the last hearing test I took, the audiologist stated I have the hearing of a teenager. Of course, genetics could play a part, and perhaps the teenager he was referencing was an acid-rock head-banger. In any case, quercitin is cheap if you purchase the NOW brand, and there are no negatives - it can only help. Edited September 1, 2023 by Bruce K 1 Link to comment Share on other sites More sharing options...
Racer-X Posted September 1, 2023 Share Posted September 1, 2023 noob comment, could be an idiot but why not do turn down the exhaust tip a little bit more Link to comment Share on other sites More sharing options...
Bruce K Posted September 1, 2023 Share Posted September 1, 2023 (edited) I tried turning down the tip with a BDA-powered Cat, but blasting the soundwaves down onto the asphalt did not provide significant improvement according the DB meter. Sound is sneaky - it reflects everywhere and often defeats efforts to redirect it. A true R500-quality side-exit muffler, or a muffled rear-exit exhaust, are the best solutions. If @Cueball1's tracks are urban tracks with noise limits, an R500-quality side exhaust will provide an attractive and effective solution (IMO, Sevens look best with side exhausts). I also used a Super-Trapp tip for a while, which has the advantage of easy removability, but the car lost power, and when I removed the tip, it was obnoxious around town. Edited September 1, 2023 by Bruce K for clarity Link to comment Share on other sites More sharing options...
MV8 Posted September 1, 2023 Share Posted September 1, 2023 If it is just about the driver and not a track, extending the exhaust to the rear with a couple mandrel bends spliced together should have the least affect on back pressure with the greatest reduction in noise at the driver's ear. Tip inserts can be made, tested, and modified with a port forward of the muffler for checking back pressure when driving and a db meter or phone app. It can be a thin, baffle insert with packing or just a 1/8-1/4 rod rolled into a circle/ring and held with screws. Link to comment Share on other sites More sharing options...
Croc Posted September 4, 2023 Author Share Posted September 4, 2023 Week Beginning September 4, 2023 Craigslist is now blocking USA-wide searches via third party search websites and where a VPN is in use. Until this changes, I will no longer be including Craigslist ads within this car for sale summary. Think twice before electing to use Craigslist to sell your items. USA7s Classified For Sale Ads https://usa7s.net/ips/forum/26-cars-for-sale/ New Stuart Taylor 7 https://www.facebook.com/marketplace/item/286888637394483/ DF Goblin https://www.facebook.com/marketplace/item/1403628396864853/ Westfield 11 https://www.facebook.com/marketplace/item/287112863958006/ Repeats Caterham https://www.facebook.com/marketplace/item/583858490501013/ Caterham https://www.facebook.com/marketplace/item/1482642472549776/ Caterham https://www.facebook.com/marketplace/item/149199501163740/ Lotus 7 S4 https://www.facebook.com/marketplace/item/593067882983971/ Replica https://www.facebook.com/marketplace/item/1076617119852751/ Locost Project https://www.facebook.com/marketplace/item/655763246441864/ Locost Project https://www.facebook.com/marketplace/item/1498358520995349/ Westfield https://www.ebay.com/itm/166275080713?mkcid=16&mkevt=1&mkrid=711-127632-2357-0&ssspo=fbJmRN0DTES&sssrc=2047675&ssuid=&widget_ver=artemis&media=COPY and here https://www.hemmings.com/classifieds/dealer/westfield/se/2610959.html Stalker https://www.hemmings.com/classifieds/dealer/lotus/unspecified/2631787.html Canada Donkervoort https://www.facebook.com/marketplace/item/2482305621952213/ Westfield https://www.facebook.com/marketplace/item/1283424638974966/ Fejer 7 https://www.facebook.com/marketplace/item/246001785078755/ Caterham https://www.autotrader.ca/a/caterham/super 7/vaughan/ontario/19_12525939_/?showcpo=ShowCpo&ncse=no&orup=1_1_1&pc=T4N 6S6&sprx=-1 and here https://www.kijiji.ca/v-cars-trucks/markham-york-region/caterham-lotus-super-7-hayabusa-sv/1668687794 Eva Beva https://www.autotrader.ca/a/lotus/unspecified/roxton pond/quebec/5_59266058_20230425130945855/?showcpo=ShowCpo&ncse=no&orup=24_15_55&pc=T4N 6S6&sprx=-1 and here https://www.kijiji.ca/v-voiture-collection/granby/eva-beva-lotus-super-7/1667803489 and here https://www.facebook.com/marketplace/item/188308534231376/ Dutton https://www.kijiji.ca/v-cars-trucks/kawartha-lakes/1976-dutton-lotus-7/1667580100 and here https://www.facebook.com/marketplace/item/622395363325372/ Birkin https://www.autotrader.ca/a/lotus/seven/calgary/alberta/19_12371976_/?showcpo=ShowCpo&ncse=no&orup=41_15_55&pc=T4N 6S6&sprx=-1 Locost https://www.kijiji.ca/v-voiture-collection/laval-rive-nord/lotus-seven-1967/1667779626 Locost Project https://www.kijiji.ca/v-classic-cars/city-of-toronto/lotus-super-seven-replica/1667258482 Caterham https://7cars.ca/cars-for-sale/caterham-s3-360.htm Locost https://www.facebook.com/marketplace/item/298700612586762/ Replica https://www.facebook.com/marketplace/item/1198192400840027/ Link to comment Share on other sites More sharing options...
Croc Posted September 10, 2023 Author Share Posted September 10, 2023 Week Beginning September 10, 2023 Craigslist is now blocking USA-wide searches via third party search websites or/and where a VPN is in use. Until this changes, I am unable to include Craigslist ads within this car for sale summary. USA7s Classified Sevens for Sale Ads https://usa7s.net/ips/forum/26-cars-for-sale/ New Lotus 7 S2?/Early Caterham?/Replica? https://www.hemmings.com/classifieds/dealer/lotus/unspecified/2725361.html Specter Mk1 https://www.facebook.com/marketplace/item/3529681310648852/ DF Goblin https://www.facebook.com/marketplace/item/1403628396864853/ Replica Project https://www.facebook.com/marketplace/item/818120779807095/ Repeats Caterham https://www.facebook.com/marketplace/item/1482642472549776/ Caterham https://www.facebook.com/marketplace/item/149199501163740/ Lotus 7 S4 https://www.facebook.com/marketplace/item/593067882983971/ Stalker https://www.hemmings.com/classifieds/dealer/lotus/unspecified/2631787.html Westfield https://www.ebay.com/itm/166323355978?hash=item26b9a5014a%3Ag%3AawMAAOSwZRBkrkYU&mkevt=1&mkcid=1&mkrid=711-53200-19255-0&campid=5335981329&customid=&toolid=10049 Replica https://www.facebook.com/marketplace/item/1076617119852751/ Replica Project https://www.facebook.com/marketplace/item/1306580090234392/ Locost Project https://www.facebook.com/marketplace/item/1498358520995349/ Canada Locost https://www.autotrader.ca/a/lotus/seven/delta/british columbia/19_12681378_/?showcpo=ShowCpo&ncse=no&ursrc=pl&urp=1&urm=2&pc=T4N 6S6&sprx=-1 and here https://www.facebook.com/marketplace/item/246001785078755/ Superformance S1 https://www.autotrader.ca/a/superformance/caterham/leaskdale/ontario/19_12679638_/?showcpo=ShowCpo&ncse=no&orup=3_4_4&pc=T4N 6S6&sprx=-1 Caterham https://www.autotrader.ca/a/caterham/super 7/vaughan/ontario/19_12525939_/?showcpo=ShowCpo&ncse=no&orup=4_4_4&pc=T4N 6S6&sprx=-1 and here https://www.kijiji.ca/v-cars-trucks/markham-york-region/caterham-lotus-super-7-hayabusa-sv/1668687794 Birkin https://www.autotrader.ca/a/lotus/seven/calgary/alberta/19_12371976_/?showcpo=ShowCpo&ncse=no&orup=43_15_59&pc=T4N 6S6&sprx=-1 Westfield https://www.autotrader.ca/a/lotus/seven/lethbridge/alberta/19_12680734_/?showcpo=ShowCpo&ncse=no&orup=44_15_59&pc=T4N 6S6&sprx=-1 and here https://www.kijiji.ca/v-cars-trucks/lethbridge/2016-westfield/1671103155 Dutton https://www.kijiji.ca/v-cars-trucks/kawartha-lakes/1976-dutton-lotus-7/1667580100 and here https://www.facebook.com/marketplace/item/622395363325372/ Eva Beva https://www.kijiji.ca/v-voiture-collection/granby/eva-beva-lotus-super-7/1667803489 and here https://www.facebook.com/marketplace/item/188308534231376/ Locost https://www.kijiji.ca/v-voiture-collection/laval-rive-nord/lotus-seven-1967/1667779626 Locost Project https://www.kijiji.ca/v-classic-cars/city-of-toronto/lotus-super-seven-replica/1667258482 Caterham https://7cars.ca/cars-for-sale/caterham-s3-360.htm Replica https://www.facebook.com/marketplace/item/298700612586762/ Replica https://www.facebook.com/marketplace/item/1198192400840027/ Donkervoort https://www.facebook.com/marketplace/item/2482305621952213/ Eva Beva https://www.facebook.com/marketplace/item/283401747495108/ Westfield https://www.facebook.com/marketplace/item/1283424638974966/ Link to comment Share on other sites More sharing options...
wdb Posted September 12, 2023 Share Posted September 12, 2023 On 9/10/2023 at 9:48 AM, Croc said: Lotus 7 S2?/Early Caterham?/Replica? https://www.hemmings.com/classifieds/dealer/lotus/unspecified/2725361.html What in heavens name is that anyway? A bitsa se7en to be sure but just which bits? And for $33K you'd think they would at least use something besides duct tape. Link to comment Share on other sites More sharing options...
wdb Posted September 15, 2023 Share Posted September 15, 2023 BaT find. https://bringatrailer.com/listing/caterham-super-seven-5/ Link to comment Share on other sites More sharing options...
IamScotticus Posted September 15, 2023 Share Posted September 15, 2023 Spec says 1600 Sprint but 4 into 1 headers are usually a 1700 thing Link to comment Share on other sites More sharing options...
Sevins7 Posted September 15, 2023 Share Posted September 15, 2023 1 hour ago, IamScotticus said: Spec says 1600 Sprint but 4 into 1 headers are usually a 1700 thing It is a 1600. I have all the build receipts and engine test data. A very sad day for me. Cant believe I am having to sell it after waiting so long to buy one again. 1 1 Link to comment Share on other sites More sharing options...
Sevins7 Posted September 15, 2023 Share Posted September 15, 2023 8 hours ago, wdb said: BaT find. https://bringatrailer.com/listing/caterham-super-seven-5/ Have you ever put something up for sale that you hope does not sell!!!!!! No...it has to go but....ouch it hurts. 1 Link to comment Share on other sites More sharing options...
IamScotticus Posted September 15, 2023 Share Posted September 15, 2023 (edited) Your car and mine both came in together through Moto / Tex Motor Works that year. I might even have a picture of it then. Dick Brink was THE MAN! Edited September 15, 2023 by IamScotticus Link to comment Share on other sites More sharing options...
Sevins7 Posted September 15, 2023 Share Posted September 15, 2023 (edited) 10 minutes ago, IamScotticus said: Your car and mine both came in together through Moto / Tex Motor Works that year. I might even have a picture of it then. No way!!!!! That is so cool. But this is killing me brother! Edited September 15, 2023 by Sevins7 Link to comment Share on other sites More sharing options...
kayentaskier Posted September 16, 2023 Share Posted September 16, 2023 Aloha Ray it would be great to see your 7 and your Alfa stay in HI. There are so few 7s in HI and I know you did a lot to import the car and bring this car to a state of reliability. Good luck with the BAT auction and your upcoming move to off island, to your next adventure. Stay well, Jim Link to comment Share on other sites More sharing options...
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