PJM Posted September 14, 2014 Report Share Posted September 14, 2014 (edited) In response to a pm I bought mine from amazon, but ebay have them too. Just put chrome exhaust into the search facility on ebay and up pop lots of options. Just make sure you buy one of the correct or larger diameter. Mine was slightly oversize but the securing bolt works well and I never had any problems. The fumes may bother those behind but at least it makes them keep their distance Edited September 14, 2014 by PJM Quote Link to post Share on other sites
PaulAA Posted September 14, 2014 Report Share Posted September 14, 2014 In response to a pm I bought mine from amazon, but ebay have them too. Just put chrome exhaust into the search facility on ebay and up pop lots of options. Just make sure you buy one of the correct or larger diameter. Mine was slightly oversize but the securing bolt works well and I never had any problems. The fumes may bother those behind but at least it makes them keep their distance When I attached mine, the screw fixing regularly worked loose and I also suspected that the gap between the chrome finisher and the pipe itself was a source for fumes to escape. Solution was therefore a couple of tack welds and the gap packed with gun gum. Quote Link to post Share on other sites
AlexB Posted September 14, 2014 Report Share Posted September 14, 2014 Peter... yes, fully agree with your statement. The "Rockshore" product looks interesting...... It has the downward pointing exhaust flange. Hmmm. Quote Link to post Share on other sites
AlexB Posted September 14, 2014 Report Share Posted September 14, 2014 I had a paper published in Atmospheric Environment many moons ago...... when I used to be a "real scientist" as opposed to an "administrative" one these days. Quote Link to post Share on other sites
Denis Posted September 15, 2014 Report Share Posted September 15, 2014 So Alex B...that's a Yes, then! Even with exhaust extensions it'll still back draft...I used to fit Chrome tailpipes, it never helped at all! The TR6 back was painted black to 'hide' not cure the problem! LeMans GT's in the 1960's...e.g. Ferrari 250GTO, Cobra LM Coupe employed the Kamm Tail for that very aero effect. Quote Link to post Share on other sites
Geko Posted September 15, 2014 Report Share Posted September 15, 2014 The tail pipe outlet should point anywhere away from the rear face of the car i.e. downwards. Backdraft is caused by depression - air vacuum- while the car is moving forward just like a sail or an aircraft wing. The worst setup is the when the tail pipe points upwards that is smack in the middle of the rear face of the car where the depression/air vaccum is the strongest. The reason why tail pipes point upwards is to correct the car low clearance and prevent the tail from scraping the road when bumpy. Quote Link to post Share on other sites
AlexB Posted September 15, 2014 Report Share Posted September 15, 2014 Interesting.... in theory a downward pointing tailpipe still pushes out the waste aerosols but because of the aerodynamics of the particulate being deposited downwards, the car (at speed, at least) has a chance of going fast enough to be "just ahead" of the plume vortex. In town though, I suspect it's not as effective. Quote Link to post Share on other sites
CONCRETE24 Posted September 23, 2014 Report Share Posted September 23, 2014 Hi Paul, as with most convertible sports cars the airflow in the front seats tend to go in a forward direction - that's why your back gets wet in the rain. As mentioned previously the airflow also curls around the windscreen to come in the sides dragging with it anything produced up front. With the door wondows in the up position is the smell there - it should be if it is coming from the back. With the windows up the airflow at the driver position should still be going forward. As it pops up above the front screen it will produce a large vortex that curls over the top of you dragging more air in from behind. Somehow you need to smooth this flow out (hence my comment about the holdall shaped banker strapped to the boot) How big is the lip on the front screen capping. If too big it could disturb the airflow and affect the vortex above you - have you tried tapping over it to smooth it. Are there screen demist vents on a TR6 (like those on a 4/4A) if so direct the airflow to these and turn the fan on. Or open the side vents This may help to reduce the forward airflow bringing the smell. Roger PS - aeroscreens As Roger describes here and Peter mentions earlier - rule out any oil leaks under the bonnet - I have been accusing my 6 of producing excessive exhaust fumes for years - long runs leaving me with headaches and sore throats but yesterday I finally eliminated the worst of them by fixing the (previously undetected), leak from the rubber breather hose that goes to from the Rocker cover to the Plenum (via the Flame Trap). An over tightened hose clip and an old brittle hose combined in a split under the clip. It was dripping onto the exhaust manifold...... and in hindsight the smell was always worse with the fresh air vents open and\or the windows down! P.S. The exhaust does still stink - but the smell stays 'mainly' behind me at least....! Regards, Michael. Quote Link to post Share on other sites
peejay4A Posted September 23, 2014 Report Share Posted September 23, 2014 I endured the pong in my 6 with twin exhausts and with a single pipe system. Eventually I reverted to the original style side exit and the problem was greatly reduced. It sounded better too. Quote Link to post Share on other sites
Denis Posted September 23, 2014 Report Share Posted September 23, 2014 It's all part of the Classic Car Experience...man up! Quote Link to post Share on other sites
peejay4A Posted September 23, 2014 Report Share Posted September 23, 2014 More like puke up in my case Quote Link to post Share on other sites
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