| Produced from - | Aug 1963 |
|---|---|
| Until - | May 1977 |
| Home - | 316825 |
| Export - | 0 |
| On Register - | 198 |
| In Club - | 72 |
2000/2500/2.5PI model consultant
2000/2500/2.5PI model consultant
Triumph Registrar
Discussion
Latest - Towing mirrors
by JJ Tadd
Gallery
Blog - no entries
Marketplace
| < Mk2 2000 auto hard to start (part 2) 2000 on SU HS4 Steering wheel movement > | |
|---|---|
 "Greta"
posts: 181  Pendle & Pennine groupjoined on Tue 4th Oct 2016 |
posted Sat 27th Oct 2018
My GT6 isn't giving the results we'd hope for after the rebuild - among other avenues of enquiry - I'm wondering how many 2000 / 2500 's here are running on 1 1/2 inch SU? If you are, please can you share your needle choice and state whether your engine is stock spec or uprated in anyway. Also keen to hear from any that may have uprated manifold to take HS6 - and therefore again keen to know what settings. In a GT6 to go HS6 I understand I need Dolly Sprint Dash Pots to fit under the bonnet. !
Spitfire 4 MKII 1966: Spitfire MKIII 1969 - Project |
| Tags - 2000 GT6 2000/2500/2.5PI | |
|
"thescrapman"
posts: 9307 Essex group joined on Sat 17th Sep 2005 |
posted Sat 27th Oct 2018
reply 1 of 9
There are some standard 2000 on HS4, I wouldn't have thought any tuned ones would be using them. HS6 will need manifold machining to take bend out for canted engine. And Dolly Spint dash pots and maybe a teardrop bulge as well. I have HS6 on my latest 2000, tired standard engine that should have CD150. Has 2.5S needles in it I think. Definitely not right. Schadenfreude expert and collector of assorted rusty Triumphs on the Essex/Suffolk Border. |
| Tags - 2000 GT6 2000/2500/2.5PI | |
|
"GT64fun"
posts: 101 Southern group joined on Tue 15th Mar 2011 |
posted Sun 28th Oct 2018
reply 2 of 9
Nuala What inlet manifold are you using ? Ian |
| Tags - 2000 GT6 2000/2500/2.5PI | |
|
"Greta"
posts: 181 Pendle & Pennine groupjoined on Tue 4th Oct 2016 |
posted Sun 28th Oct 2018
reply 3 of 9
Hi - Current manifold with HS4 is stock + a little porting to smooth & match - simply adapted to take the securing bolts for the SUs. I appreciate that either the standard manifold will need to be enlarged and flowed to take the 1 3/4 bore - or a HS6 compatible ( TR6 / 2500 ) manifold used. With develpment work on the GT6 engine I'm wondering if it will need more air & fuel at full throttle. Very happy to hear from anyone that has made this work to an advantage - and from those that may have garage spares for sale that would allow me to evaluate this rig. And ... still interested to hear from any that are running 2L engines on HS4 - My old engine ran well on ADN needles - ( from Dolomite 1500!) but post rebuild these seem too lean - currently trying BDK - but feel we're rather shooting in the dark. Seems to need to be as lean as possible at idle ( currently needs no choke at all from cold ) then requires a very rich profile at mid stations
Spitfire 4 MKII 1966: Spitfire MKIII 1969 - Project |
| Tags - 2000 GT6 2000/2500/2.5PI | |
|
"thescrapman"
posts: 9307 Essex group joined on Sat 17th Sep 2005 |
posted Sun 28th Oct 2018
reply 4 of 9
Sounds like your car is crying out for a trip to a decent rolling road Schadenfreude expert and collector of assorted rusty Triumphs on the Essex/Suffolk Border. |
| Tags - 2000 GT6 2000/2500/2.5PI | |
|
"Nick Jones"
posts: 8769 Wessex (Bristol & Bath) group joined on Sat 19th Nov 2005 |
posted Sun 28th Oct 2018
reply 5 of 9
Nuala, 1.5" carbs, SU or Stromberg, are quite close to the flow limit for a standard GT6/Vitesse mk2 engine. If your engine is much modified in terms of cylinder head works, hotter camshaft, tubular exhaust manifold etc, they may not flow quite enough to get the best from the engine. However, this doesn't mean that they can't be tuned to give their best up to their flow limits. I ran SU HIF4s on my Vitesse before the FI and they worked pretty well. IIRC I used the needles intended for a HS4 equipped 2000 saloon - ABL code. The Haynes SU book also lists BCY for later cars but I think they were a bit leaner. The dashpot spring used also has an effect with the stronger springs making them run a bit richer for a given needle and extending the flow range of the carb. Haynes book lists AUC1167 (yellow) for the springs. Colin is correct about the rolling road, though it's getting harder to find one with an operator who knows about SUs. Nick Nick JonesSomerset 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 |
| Tags - 2000 GT6 2000/2500/2.5PI | |
|
"Greta"
posts: 181 Pendle & Pennine groupjoined on Tue 4th Oct 2016 |
posted Mon 29th Oct 2018
reply 6 of 9
Colin / Nick - Thanks for input. Already been to RR - Pete Morgan - Balmuir Garage, Gresford, nr Wrexham - not too far from Paddocks. He knows his stuff - problem was there was too much else to sort. My luck with Triumph traders continues to disappoint - car currently back with engine builder to see if they can resolve - suggestion is that the cam may be miss timed! Will try some ABL's
Spitfire 4 MKII 1966: Spitfire MKIII 1969 - Project |
| Tags - 2000 GT6 2000/2500/2.5PI | |
|
"thescrapman"
posts: 9307 Essex group joined on Sat 17th Sep 2005 |
posted Tue 30th Oct 2018
reply 7 of 9
Nuala if you get nowhere I have a mate who many be able to go through the engine and see if he can work it what is amiss. He has built many good engines in the past (supercharged Spitfire Mk3engine amongst them) Last resort if all else fails, he is in North London, so not exactly convenient. Cheers Colin Schadenfreude expert and collector of assorted rusty Triumphs on the Essex/Suffolk Border. |
| Tags - 2000 GT6 2000/2500/2.5PI | |
|
"timbancroft61"
posts: 10449  Website ModeratorLibrary Manager RBRR organising team member joined on Tue 31st Mar 1998 |
posted Mon 5th Nov 2018
reply 8 of 9
Nuala, I have run Dolly Sprint HS6s on my GT6 for years, fitted to the mk2 GT6 manifold with the (poorly engineered) TT adaptor plates. No real problem as long as one is careful to ensure air does not into the joint between the carb and the manifold. The inlet tracts on the manifold have been matched to the ports on the head. However, I am about to get a 2.5S inlet manifold modified by having the cyl. head face machined so at to ensure the carbs are level. Will also get the thing machined to match the head ports. For a very good installation, Ian Foster's mk2 has HS6s fitted, very tidy.
Ian, Post a pic!
Regards all. Club Triumph Round Britain Reliability Run: Part of the organising team, and honoured to be associated 1970 TR6 Maroon. Bought May 2018. Since pruchase: Full suspension re-build, new clutch and propshaft plus re-built driveshafts. Goes well. Blimey, lots more done now, gearbox replaced (Canley Classics unit), 7J black minilites c/w Uniroyal tyres (Crikey, un-stickable), Revington's Targa springs. Now needs some engine work and some brakes. Otherwise, well on its way to becoming a Club Triumph type car, i.e. one that is actually used! Previously owned: Triumph Dolomite Sprint (Now owned by Paul Hughes) Herald 1200 Coupe on mk2 chassis (Now owned by Jess Cook and being properly used) Vitesse mk2 Conv: Sold in 1983, still on the road! Various Citroens and Pugs DD: Focus ST Diesel...torquey! |
| Tags - 2000 GT6 2000/2500/2.5PI | |
|
"GT64fun"
posts: 101 Southern group joined on Tue 15th Mar 2011 |
posted Mon 5th Nov 2018
reply 9 of 9
Tim/Nuala Actually Stromberg 175CD2s on mine (were already on it when I bought the car in 1977) The top of the dashpot covers and damper rods were trimmed by 6mm to get better clearance, as originally(and for many years) the front one rubbed on the bonnet. Two photos attached. The first shows the flanges built up in aluminium to allow the SAH spacers to be ditched. The second shows the completed install. A four bolt fixing for the bigger carb is a definite improvement. Cold airbox is on the list of future projects. Ian  
|
| Tags - 2000 GT6 2000/2500/2.5PI | |
Club Triumph Ltd. Registered in England No. 4961210 Registered Office: Suite A,10th Floor, Maple House, High Street, Potters Bar, Herts, EN6 5BS. VAT registration number 340 4536 26. Club Triumph is run entirely by its members for its members and does not have paid employees.
Website Terms and Conditions | Terms and Conditions of Sale | Privacy |Club Rules
2000 Mk1
