jstone Posted May 10, 2008 Report Share Posted May 10, 2008 Hi All, Seems that my current exhaust, Phoenix twin pipes, has to come out as I need to replace the diff. I was wondering what are the advantages of the single big bore over the twin pipes as I am getting a little fed up with scraping the rear boxes along the floor. 1. Does the big bore box sit up higher than the twin boxes as it seems to me that the single pipe from the manifold will thread between the chassis and scuttle plate like the original system. 2. Is it louder 3. Any noticable improvement on performance. 4. If yes to all three , know of anybody who has a2nd hand one for sale With Thanks Jeremy Quote Link to post Share on other sites
whatmore179 Posted May 10, 2008 Report Share Posted May 10, 2008 Hi All, Seems that my current exhaust, Phoenix twin pipes, has to come out as I need to replace the diff. I was wondering what are the advantages of the single big bore over the twin pipes as I am getting a little fed up with scraping the rear boxes along the floor. 1. Does the big bore box sit up higher than the twin boxes as it seems to me that the single pipe from the manifold will thread between the chassis and scuttle plate like the original system. 2. Is it louder 3. Any noticable improvement on performance. 4. If yes to all three , know of anybody who has a2nd hand one for sale With Thanks Jeremy Quote Link to post Share on other sites
whatmore179 Posted May 10, 2008 Report Share Posted May 10, 2008 I have the phoenix twin box system on my 6. I had the diff replaced last year and the system didnt have to be removed. Having said that i have the same problem as you in that i scrape my drive with the exhaust when i leave my HA. I have now bought the new design phoenix big bore cross box which looks like the original system but with a bigger bore. having this fitted on monday.....let you know what its like. (bought direct from phoenix saved a fortune) Quote Link to post Share on other sites
Bald Rick Posted May 10, 2008 Report Share Posted May 10, 2008 Jeremy I had a twin box system and frequently grounded it. I now have the latest Pheonix 6/3/1 single bore and although it is higher I have still managed to ground it (just). The sound though can only be described as "awesome". Tony Quote Link to post Share on other sites
Ragtag Posted May 11, 2008 Report Share Posted May 11, 2008 (bought direct from phoenix saved a fortune) Have you got a website or number for Phoenix? When I Googled it I got Quiller Triumph! Quote Link to post Share on other sites
RogerH Posted May 11, 2008 Report Share Posted May 11, 2008 Hi Chris, Google - Phoenix performance exhausts Roger Quote Link to post Share on other sites
RobinTR6 Posted May 11, 2008 Report Share Posted May 11, 2008 Hi Chris, Google - Phoenix performance exhausts Roger I have the single big bore and yes the box does just as good a job scraping the ground exiting the drive and of course the speed bumps tke even more work and still grounds the exhaust box so guess its about the same Quote Link to post Share on other sites
harriers Posted May 11, 2008 Report Share Posted May 11, 2008 I was looking at replacing my original exhaust to a twin box system but judging by comments on the forum and being surrounded by speed bumps I am now having second thoughts. Can anyone tell me if the Revington twin system is the best option as it apparently fits slightly higher at the rear. Quote Link to post Share on other sites
IanR Posted May 11, 2008 Report Share Posted May 11, 2008 Hi Folks You guys may or may not know that Phoenix now do a conventional transverse box (as per original design) with a large twin bore outlet and a single BIG bore inlet, I have one fitted to my 5 and I think its good , Not so the phoenix pulse manifold which though its all you can get in the pulse design, has unequal primaries and is highly resonant at 2500 rpm. However an equal length primary pulse design does not exist for under 1K unless you know diffently Cheers Quote Link to post Share on other sites
Ragtag Posted May 12, 2008 Report Share Posted May 12, 2008 Hi Chris, Google - Phoenix performance exhausts Roger Thanks Roger. I assumed that they would have a website. I guess I'll just have to 'phone them!!! Quote Link to post Share on other sites
Red 6 Posted May 12, 2008 Report Share Posted May 12, 2008 (edited) I have fitted several and none have ever grounded. When fitting you need to tuck the box high into the space under the boot floor and only use a single hanger to locate the system. The method is to source a length of flexible strap hanger and fit extra bracket through and between the boot floor and the phoenix supplied slip on bracket so that the tail pipe just clears the rear valence. This means drilling a hole through the boot floor to mount the bracket. Then all you do is rotate the centre pipe to lift the rear of the box towards the underside of the car to a point where the centre pipe will not vibrate on the top of the chassis. When its all clamped up there should be no possibility of grounding. A single big bore is quieter than a twin. It is gives a more bass note on tickover. Edited May 12, 2008 by Red 6 Quote Link to post Share on other sites
Allan Jezzard Posted May 12, 2008 Report Share Posted May 12, 2008 I have the single big bore and yes the box does just as good a job scraping the ground exiting the drive and of course the speed bumps tke even more work and still grounds the exhaust box so guess its about the same IMHO opinion the Revington sytem is far superior having had one fitted to my 6 for over 12 years. It fits higher and further forward resulting in far less grounding as is evidenced by the relative lack of scoring in over 60k miles. Quote Link to post Share on other sites
whatmore179 Posted May 12, 2008 Report Share Posted May 12, 2008 Have just fitted the new phoenix big bore transverse system to replace the twin box system which was on my 6. sounds superb (appears quieter than the twin) and fitted very well with only a couple of monor mods needed. sits up well above the ground even though i have a slightly lowered 6. first impressions are good. well worth changing. Quote Link to post Share on other sites
jellison Posted May 12, 2008 Report Share Posted May 12, 2008 Surely the single pipe rear exist is best for noise, power and weight - well I know it is (the noise is great). Quote Link to post Share on other sites
CP62 Posted May 12, 2008 Report Share Posted May 12, 2008 If you really want to stop the scrapes then move the silencer forward of the cross tube, fit a longer tail pipe and take a 'bite' out of the rear valance so that you can angle the tail pipe upwards slightly. The only part of my system that ever scrapes is the bottom tube of the manifold which is about 1" below the chassis at the lowest point. CP62 Quote Link to post Share on other sites
grmills Posted May 14, 2008 Report Share Posted May 14, 2008 The Phoenix single pipe sounds cheap and tinny IMHO. If I were to be going through this evolution again I would take the car to a custom exhaust shop and get one made out of SS but a considerably higher wall-thickness than the Phoenix. No "minor mods" required when it fitting either... Quote Link to post Share on other sites
jellison Posted May 14, 2008 Report Share Posted May 14, 2008 The Phoenix single pipe sounds cheap and tinny IMHO. If I were to be going through this evolution again I would take the car to a custom exhaust shop and get one made out of SS but a considerably higher wall-thickness than the Phoenix. No "minor mods" required when it fitting either...Phoenix Single pipe is a Damn Good exhaust and all SS (the twin box or transverse systen sound flat and dull (boring) - you should here one at 7500revs. Yes a one off is the utimate (what I am doing in at the end of the month), but it is a Grand to do it properly;) http://video.google.com/videoplay?docid=-1756653537869383870 Quote Link to post Share on other sites
CONCRETE24 Posted May 14, 2008 Report Share Posted May 14, 2008 The Phoenix single pipe sounds cheap and tinny IMHO. If I were to be going through this evolution again I would take the car to a custom exhaust shop and get one made out of SS but a considerably higher wall-thickness than the Phoenix. No "minor mods" required when it fitting either... I have the SS version of the Phoenix and it is the least tinny thing I have ever heard! It emits a very bassy grumble at idle and wails like a banshee at high revs - love it! Michael. Quote Link to post Share on other sites
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