Tom Fremont Posted July 11, 2016 Report Share Posted July 11, 2016 Now showing as N/A, and a friend with one went through @#$%%^@ to get a replacement from them. Anyone know why? BTW, they still offer S/C kits for MGs. Cheers, Tom Quote Link to post Share on other sites
Peter Cobbold Posted July 11, 2016 Report Share Posted July 11, 2016 (edited) Now showing as N/A, and a friend with one went through @#$%%^@ to get a replacement from them. Anyone know why? BTW, they still offer S/C kits for MGs. Cheers, Tom Tom, No idea why. There's unmet demand in UK for small numbers, and that could well have grown as more TR6ers got to drive one. Owners with access to a basic machine shop should be able to devise their own s/c installation using an Eaton M62 blower off a Merc etc. There's an easy way around having to cast the intake manifold, by supporting the blower on a steel tube frame forward of the disy. The rest is an SU, three pulleys, a belt, tubes/plenum to connect with a twin carb manifold, a couple of back fire valves (off the shelf).... Peter Peter Edited July 11, 2016 by Peter Cobbold Quote Link to post Share on other sites
Tom Fremont Posted July 11, 2016 Author Report Share Posted July 11, 2016 ...a bit more on the topic: Said friend ( who at 75 owns three TR6s, two with triple Strombergs, one with nitrous and the other with S/C and circa 210 BHP at the rear wheels ) is replacing a S/C after (5) years. Miles unknown, but I'd guess less than 15K. " It's making noise. " He will rebuild his old one and keep it as a spare for when the new one gets noisy. He reckons it's doing 15000-16000 rpm in service. Notably, MOSS offer an MG kit with Roots type blower, but the TR6 kit has helical rotors. The latter is claimed by my friend to have rotor thrust issues which bring about their demise ( in his application ). I have always wondered how these blowers cope in wet applications, and seem to recall that EATON once would not honor its warranty in those cases, but later reinstated it. Cheers, Tom Cheers, Tom Quote Link to post Share on other sites
Peter Cobbold Posted July 12, 2016 Report Share Posted July 12, 2016 The Eatons are still Roots type, with no internal compression. But there's a lot of science in those rotors designed to minimise turbulence and hence charge-heating. The M62 on Mercs should be good for 100k miles, so 15K to rear bearing failure needs an explanation. Moss fit a bypass that closes off air into the blower off-boost, which is most of driving time. So do Mercs. BUT Mercs also stall the blower with an electromechanical clutch on the pulley, Moss do not. So at cruise the Moss blower is thrashing the same trapped air to high temeperatures that the bearrings dont like ( maybe the oil fails). Personally, I would ditch the Moss by-pass and let the blower see mixture all the time to keep things cool. There were early reports on the MBG kits off fuel removing the teflon rotor coating. I'd not worry if it happens, the fuel will help keep the seal. Peter Quote Link to post Share on other sites
DaveN Posted July 13, 2016 Report Share Posted July 13, 2016 How about the Jaguar AJ6 engine (6pot) supercharger? Quote Link to post Share on other sites
Peter Cobbold Posted July 13, 2016 Report Share Posted July 13, 2016 (edited) How about the Jaguar AJ6 engine (6pot) supercharger? You mean Dennis Priddle's installations ? - very nice too. They use Sprintex or Opcon screw compressors....expensive compared with Eaton. I think the factory used Eaton M90, which is too big for a TR6, both physically ( too long) and in air swallowing capacity. Peter Edited July 13, 2016 by Peter Cobbold Quote Link to post Share on other sites
DaveN Posted July 13, 2016 Report Share Posted July 13, 2016 More air ..... More fuel.... More fun.......BANG! I remember looking at one in detail at the local dealers. Beautifully manufactured bit of kit and (at the time) very reasonably priced. Eaton installed in the AJ engine. Quote Link to post Share on other sites
Peter Cobbold Posted July 13, 2016 Report Share Posted July 13, 2016 No BANG when done properly. Actually much less stressing than revving. Eldred tells it as it is: http://www.fefcholden.org.au/techinfo/supercharge/index.html ""ANY car can be supercharged. If yours seems difficult, just sit down and think. Once you have got it properly supercharged you'll realise that all other forms of 'hotting up' are only a shadow of the real thing " Peter Quote Link to post Share on other sites
ptjs1 Posted July 13, 2016 Report Share Posted July 13, 2016 As mentioned, it's an Eaton M90 in the Jaguar AJ16. They never supercharged the AJ6 although I have seen one private conversion. Difficult to find an M90 in the UK, but plenty in the US for sale as fitted to some Chevrolet vehicles. Paul Quote Link to post Share on other sites
kiwican Posted July 20, 2016 Report Share Posted July 20, 2016 Now showing as N/A, and a friend with one went through @#$%%^@ to get a replacement from them. Anyone know why? BTW, they still offer S/C kits for MGs. Cheers, Tom This question was posted by someone else on the 6-pack forum. A representative from Moss responded with why it has been discontinued. This is their reply: Hi everyone, This topic was brought to my attention. The system has finally been discontinued because we couldn't get the carburetors any longer. We would have had to change to another carburetor. Unfortunately we couldn't justify the tooling of the new carb to supercharger manifold, the tuning involved to get it all right again and worst of all the only carbs that we could find that we would consider acceptable finished too close to the firewall to allow a turn to a new air filter. That meant perhaps a new shorter supercharger nose to move it further forward, all custom. With so many things stacked up against it we finally had to give up and let it go. Shawn See post #13 here http://www.6-pack.org/j15/index.php/forum/9-new-products-parts-sources-vendor-reviews/260527-Moss-Supercharger-Kit-Discontinued I have to learn how to do the hyperlink thing. Simon Quote Link to post Share on other sites
Peter Cobbold Posted July 21, 2016 Report Share Posted July 21, 2016 ???? A 2" SU will fit if the ( unnecesary/undersirable) bypass is replaced with simple adaptor block. Slide 15: https://supertrarged.files.wordpress.com/2015/08/supercharging-trs-for-the-road-iwe-shorter-for-wordpress.ppt And tuning an SU is easy. Peter Quote Link to post Share on other sites
Tom Fremont Posted July 21, 2016 Author Report Share Posted July 21, 2016 ???? A 2" SU will fit if the ( unnecesary/undersirable) bypass is replaced with simple adaptor block. Slide 15: https://supertrarged.files.wordpress.com/2015/08/supercharging-trs-for-the-road-iwe-shorter-for-wordpress.ppt And tuning an SU is easy. Peter That reopens the possibility that there were other issues for which MOSS may want to throw in the towel. At $4K per it makes warranty worries rather more poignant for them. Let's see if anyone presses the point with MOSS - I won't hold my breath. Cheers, Tom Quote Link to post Share on other sites
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