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![]() posts: 4762 Competitions Secretary Comp Committee Member Dolomite, 1500TC & Toledo Model Consultant Essex group joined on Fri 20th Oct 2006 |
posted Fri 16th Sep 2011
reply 21 of 81
michael_charlton wrote: Drained the original tank that had been pluggeed to accomodate the `new` tank and all the fuel was blue in colour ?? yep, my inline filter does look decidedly blue. def no E10, drove on vapours a few times to avoid that! did fill a few times with 95 ron + 5% ethanol as that was all to be had http://triumphandadversity.blogspot.com http://mikeyb.weebly.com/ CT Drivers Challenge Champ '08 '09 CT Drivers Champ '12 Serial Triumph Offender, max out at 25 years ago! Current Triumph count 17 16 15 14 13 14 12 13 12 13 14 15 On the road: 67 Mk3 Spit - been too many places to list! 72 Stag - Nachrict Nov '07 & '09, Mar '10, 10CR '09, 11,��LCC '10 76 Sprint - RBRR 2010 finisher, many Road Rallies, Nachrict Mar '11, HCR'11, Little Devils '11 64 Herald Rally Car - 2 autotest, 8 Rally Sprints, 3 Road Rallies, HCR '09, 4 Autosolo, Cadwell Track Day 67 GT6 Mk1 Broken: 72 Mk2 PI with TR6 engine - Nachrict Feb & Nov '06, Nachrict Feb '07, HCR '08, RBRR '08, LCC '07, '08, '09 NY Res�2013 1) Sell a few��moderns 2) Mend my Triumphs 3) Drive them lots |
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![]() posts: 2128 Website Administrator North London & Herts group joined on Tue 2nd Apr 1985 |
posted Fri 16th Sep 2011
reply 22 of 81
First job for me is to get the rad out for a re-core, then overhaul the fuel system! Website administrator - Hertfordshire - 63 Herald 12/50 (RBRR 88, 14, HCR 11 ) - 65 TR4A (RBRR 92,94,96,00,02,04,08,10, 10CR 05,11,13,15,17) - 67 Herald 1200 conv (Autosolo 09) - 79 Dolomite 1850HL |
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![]() posts: 2066 non member |
posted Fri 16th Sep 2011
reply 23 of 81
There seemed to be so many problems with fuel and poor running it might be better to ask who didn't have problems and why they didn't? At Last year's Classic Le Man there were so many poor running cars in all that heat...come on who has cracked it? Don Cook��Manningtree, Essex GT6 Mk3 Signal Red (Tomboy), in the past: Triumphs...Vitesse 1600, Toledo. Tiger Cub, Thunderbird. Ten Countries Run 2003, 2005, 2007, 2009, 2011, 2015 Several Dutch Rallies. Some La Carrera Caledonia. Best trip ever: Ijsselmeer causeway then up through Germany, Denmark...over the two massive bridges of Slorebaeltbroen and Oresund to Ystad in Sweden where we got an overnight ferry to Poland, then on to Berlin etc. |
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![]() posts: 16 non member |
posted Fri 16th Sep 2011
reply 24 of 81
webers,-the 5 didnt have any fuel issues throughout the 10 CR,- maybe i was lucky |
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![]() posts: 8769 Wessex (Bristol & Bath) group joined on Sat 19th Nov 2005 |
posted Fri 16th Sep 2011
reply 25 of 81
GT6_Don wrote: There seemed to be so many problems with fuel and poor running it might be better to ask who didn't have problems and why they didn't? At Last year's Classic Le Man there were so many poor running cars in all that heat...come on who has cracked it? My EFI Vitesse worked without temperment in spite of the heat and altitude. Most will consider this a mod too far I suspect! It always gets 95 fuel and therefore has been exposed to 5% ethanol regularly (It has seen E85 in the past too, but it didn't think alot of that!). You will have almost certainly encountered 5% ethanol in the UK unless you religiously use the premium fuels of just one or two suppliers, so I'm not sure that is really the issue, although there is no doubt that the ethanol content tends to dislodge the fossilised hydrocarbons lurking in the fuel system. The comments about the blue colour are interesting though - could well be that there are formulation differences. Suspect that the main problems are: - higher than usual ambient temperatures - higher underbonnet temperatures, partly as the result of the above, but also due to working hard at relatively low speed on long steep hills (!) - altitude. - Modern petrol containing more volatile components than the 60s/70s stuff the cars were designed for. All of this conspires to cause fuel vapourisation and rough running. We discussed this with Mike and Libby and the conclusion was that on the carb equipped-sixes, it is as if they are designed to promote fuel vapourisation with carbs over the exhaust, mechanical fuel pump and fuel pipe between the two hugging the hot block and thermostat housing. Solutions discussed included an electric fuel pump mounted somewhere cooler, re-routing the fuel lines and heat shields for the carbs. A fuel return line to allow fuel to recirculate rather than hanging around in the hot engine bay was also considered. Nick Nick Jones Somerset UK Vitesse Mk 1.5 Convertible EFI, Survivor of RBRR 2008, HCR & 10CR 2009, HCR 2010, 10CR2011, HCR 2012, 10CR2013, 10CR2015, HCR 2016 & HCR 2017. GT6 Mk3 Roto - project in progress Spitfire MKIV son's project now on the road as a daily driver 2.5 PI Saloon now EFI (PIe?), Engine rebuilt and running sweet. Diff howling...... Survivor of HCR 2013 & 2014 Gone to live in Swansea http://www.tengaston.plus.com |
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![]() posts: 5728 Netherlands joined on Sun 5th Mar 2006 |
posted Fri 16th Sep 2011
reply 26 of 81
No issues with the engine in my TR7 (mildly tuned 2 litre (8 valve) on SU's); ![]() 1976 TR7 FHC (currently undergoing some TLC ...) 1980 TR7 DHC (a.k.a. Kermette, my first car bought in 1988 ) 1981 TR7 FHC (Sprint engined, a.k.a. 't Kreng) http://tr7beans.blogspot.com/ |
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![]() posts: 29 Pendle & Pennine group joined on Wed 26th Nov 2008 |
posted Fri 16th Sep 2011
reply 27 of 81
It would be nice to just blame the fuel, but it's more likely thats just the common element in a lot of other problems. |
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![]() posts: 1031 Cambridge group joined on Tue 20th Nov 2007 |
posted Fri 16th Sep 2011
reply 28 of 81
beans wrote: No issues with the engine in my TR7 (mildly tuned 2 litre (8 valve) on SU's); Ran faultless with the temperature steady irrelevant of load or outside temperature. Made sure I filled the tank with unleaded with a minimum octane rating of 98 RON. My 7 was similar - ran on 98/100 octane in Europe and had no troubles with vapourisation even when giving it plenty of right foot up the passes. in normal driving the temperature was about 1/4 but never went above 1/2 however hard I drove it :) Le Mans 2007, 08, 09, 10 & 11 |
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![]() posts: 5728 Netherlands joined on Sun 5th Mar 2006 |
posted Fri 16th Sep 2011
reply 29 of 81
Howard wrote: ... the temperature was about 1/4 but never went above 1/2 ... Do you still have the original fan + viscous coupling? If so your viscous coupling looks suspect as the temperature should be steady on a TR7. ![]() 1976 TR7 FHC (currently undergoing some TLC ...) 1980 TR7 DHC (a.k.a. Kermette, my first car bought in 1988 ) 1981 TR7 FHC (Sprint engined, a.k.a. 't Kreng) http://tr7beans.blogspot.com/ |
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![]() posts: 5906 Website Administrator RBRR organising team member North Hampshire group joined on Mon 20th Oct 2003 |
posted Fri 16th Sep 2011
reply 30 of 81
Could the fuel issues be down to the contents of the tank being sloshed around a damn sight more than usual? Jason Vitesse Mk2, Blue, modified with Lucas PI of course :-) |
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![]() posts: 952 Cambridge group joined on Wed 19th Apr 2006 |
posted Fri 16th Sep 2011
reply 31 of 81
as Nic said we spent a lot of time talking and thinking about the fuel problems... "Little Red", 13/60 Herald convertible with 1500 engine and O/D, (2007 10CR, 1/2 2009 10CR and 1 RBRR). March 2013 Back from darkest Norfolk and now very shiny.... 2017 rust coming thru again. 2018 Rebuilt engine and gearbox and now fully Megasquirt'ed and much fun to drive! |
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![]() posts: 8769 Wessex (Bristol & Bath) group joined on Sat 19th Nov 2005 |
posted Fri 16th Sep 2011
reply 32 of 81
Jason wrote: Could the fuel issues be down to the contents of the tank being sloshed around a damn sight more than usual? Could be a factor in some cases. Mine gets thrown about fairly often which may help to keep things clean..... :P Another reason to use them properly on a regular basis :) Nick Nick Jones Somerset UK Vitesse Mk 1.5 Convertible EFI, Survivor of RBRR 2008, HCR & 10CR 2009, HCR 2010, 10CR2011, HCR 2012, 10CR2013, 10CR2015, HCR 2016 & HCR 2017. GT6 Mk3 Roto - project in progress Spitfire MKIV son's project now on the road as a daily driver 2.5 PI Saloon now EFI (PIe?), Engine rebuilt and running sweet. Diff howling...... Survivor of HCR 2013 & 2014 Gone to live in Swansea http://www.tengaston.plus.com |
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![]() posts: 5120 non member |
posted Fri 16th Sep 2011
reply 33 of 81
mpbarrett wrote: The solution was to pour water over the pump and carbs bowels That never would have occurred to me, but if it works, I'm all for it. Did you have the cardboard engine valances in place? Can a comparison of vapor lock issues be made among GT6 Mk3's that ran, differentiated by whether the engine valances were in place?
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![]() posts: 952 Cambridge group joined on Wed 19th Apr 2006 |
posted Fri 16th Sep 2011
reply 34 of 81
rotoflex wrote: That never would have occurred to me, but if it works, I'm all for it. Did you have the cardboard engine valances in place? Can a comparison of vapor lock issues be made among GT6 Mk3's that ran, differentiated by whether the engine valances were in place? I have removed the exhaust side one, near side is still in place. My gt6 is a 2.5L so generates even more heat than a 2L.... mike "Little Red", 13/60 Herald convertible with 1500 engine and O/D, (2007 10CR, 1/2 2009 10CR and 1 RBRR). March 2013 Back from darkest Norfolk and now very shiny.... 2017 rust coming thru again. 2018 Rebuilt engine and gearbox and now fully Megasquirt'ed and much fun to drive! |
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![]() posts: 2898 non member |
posted Fri 16th Sep 2011
reply 35 of 81
We had a glass top mechanical fuel pump and no cardboard sidepanels fitted.                                                                                                                                            ![]() Useful GT6 Stuff -----  http://sdrv.ms/1bXwKRr 1971 Triumph GT6 MKIII - Team Shorts  ![]() 2000 Subaru Impreza P1 335 bhp 2009 Alfa Mito 1.6 JTDM |
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![]() posts: 5120 non member |
posted Fri 16th Sep 2011
reply 36 of 81
Leon Guyot insulated his fuel line, as well as added a heat shield between the carbs & exhaust:
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![]() posts: 533 Kent & East Sussex group joined on Wed 26th Apr 2006 |
posted Sat 17th Sep 2011
reply 37 of 81
Andy had this fuel vapourisation problem with his Toledo on the passes as well. I didn't experience it on the Stag, despite the carbs being in the centre of the V, but I did drive most of the passes with the bonnet cracked open, the only problem with this was that all the released hot air from under the bonnet went straight down the cabin fresh air intake - Doh! Well at least we didn't need to use the heater ;D Steve(formerly known as 76Spit) Location : Garden of England near Maidstone (or the bit the Lorries pass through on their way to rest of the UK!) http://spitfirestag.blogspot.com/ 1978 Stag Russet Brown BW65 3.0 V8 - Faversham's built -Â Â CAR 12 2011 10CR FINISHER-2012 & 2014 RBRR FINISHER ![]() 2012 Ford SMax 1.6TDCI Zetec 2014 Skoda Citigo SE 5 dr |
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![]() posts: 951 Midlands Representative West Midlands group joined on Thu 1st Nov 1990 |
posted Sat 17th Sep 2011
reply 38 of 81
MOE runs on standard glass pump and HS6's, no problem with vapourisation just a vacuum that developed in the fuel tank that ground us to a halt just as we were towing an estate out of a tunnel, just got out before we were both sitting ducks, what are the chances two cars grinding to a halt with two different fuel problems within 200 metres of each other!! Club Triumph Enquiries RBRR 88,90,92,94,96,98,04,06,08,12 marshal 2010, 2014, marshal 2016 10CR 2011,2013, 2015 and 2017 2500 Mk1 Saloon 1964 Nothing original Triumph herald 13/60 convertible 1971 Blog http://nuts-about-triumphs.blogspot.com |
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![]() posts: 1031 Cambridge group joined on Tue 20th Nov 2007 |
posted Sat 17th Sep 2011
reply 39 of 81
beans wrote: Do you still have the original fan + viscous coupling? If so your viscous coupling looks suspect as the temperature should be steady on a TR7. Thanks Theo, but am running these days with a Kenlow electric fan set to cut in at 50%. Le Mans 2007, 08, 09, 10 & 11 |
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![]() posts: 2252 Local Groups Co-ordinator Worcestershire group joined on Thu 19th Oct 2017 |
posted Sun 18th Sep 2011
reply 40 of 81
I didn't have any fuel problems. Tim Ward National Local Group Organiser, Club Registrar |
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