2long Posted October 13, 2013 Report Share Posted October 13, 2013 (edited) These have been in a drawer for 35 years, after we removed them from the tr2 when we first got it. Ram pipes, trumpets, whatever, they have no markings and was wondering if I polished them up and put them on my HS4s, what would happen. Too much junk in the engine? Dan Edited October 13, 2013 by 2long Quote Link to post Share on other sites
TR 2100 Posted October 13, 2013 Report Share Posted October 13, 2013 They look like quality - must be worth a few bob to someone who wants period fittings and doesn't worry what gets sucked into his engine! AlanR Quote Link to post Share on other sites
vivdownunder Posted October 14, 2013 Report Share Posted October 14, 2013 Dan, ram's horn type trumpets marginally improve airflow into the carbs, but it's hardly measurable on a rolling road dyno. Not a bad bling item, and with foam socks your engine would get cleaner air than the orginal mesh aircleaners. See http://www.tr-register.com.au/Files/copelandk2.htm Regards, Viv Quote Link to post Share on other sites
RogerH Posted October 14, 2013 Report Share Posted October 14, 2013 (edited) Hi Dan, I've recently seen a chart giving theoretical benefits (and adverse) based on the length/diameter and the radiused bell mouth. I'll try and find and post. Roger Have a look at this (stolen from the CT forum) http://www.classiczcars.com/forums/attachments/carburetor-systems-s30/49210d1320624773-power-cones-roundtop-carbs-su-hitachi-ram-pipe-stub-stack-flow.jpg Edited October 14, 2013 by RogerH Quote Link to post Share on other sites
2long Posted October 14, 2013 Author Report Share Posted October 14, 2013 Interesting Roger! I will have to take some measurements and see where I fit on the chart. Dan Quote Link to post Share on other sites
Willie Felger Posted October 15, 2013 Report Share Posted October 15, 2013 I Kenya, where my TR3A originated, I would be wary of trumpets as it can be very dusty. Here in UK I use them and don't get dirt in the carbs other than the very light deposit left by the petrol. I'm sure they do make a difference. My originals had gauze over them which I was advised to remove by my local rolling road man. He reckoned they reduced the size of the carbs by 10%! I would go ahead and use them, they look great. Keep TRucking, Willie Quote Link to post Share on other sites
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