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» NEWS & EVENTS » TECHNICAL » RENAISSANCE FILES » PARTS » FOR SALEBe sure to check out our RENAISSANCE FILES which describe modifications to a Vitesse including how to install a Datsun 180B diff with successful results.
Tyre selection charts for your Triumph... Click here...
"Tuning Standard Triumphs over 1300cc" by David Vizard. A very useful guide if you want more performance from your Triumph. This is a 150 page manual. The file is 1.1MB in PDF format. You will need Acrobat Reader (free) to view and print it.SU Carburetor Needle Searchable Selection Chart Finding SU (Skinner Union) nedles to make your car run right under all throttle conditions is a trying experience at best. This database will help you find the best suited needle for your engine needs.
COMPRESSION RATIOS » DIFF RATIOS » DISTRIBUTOR MODELS » BHP & TORQUE FIGURES FOR TRIUMPH SIX CYLINDER ENGINES » TUNING SU CARBS » SIX CYLINDER HEAD APPLICATION CHART » FACTORY QUOTED THEORETICAL COMPRESSION RATIOS:
2000 Mk1 To MB 13750E 8.5:1 HE 2000 Mk1 From MB 13751E 9:1 or 9.1:1 HE 2000 Mk1 MB 7:1 LE 2000 Mk2 To ME 50 000 9.25:1 HE 2000 Mk2 To ME 50 000 7:1 HE 2000 Mk2 From ME 50 000 8.8:1 HE 2.5 PI + TR5/6 All MG, CP, CR 9.5:1 HE 2500 TC + S MM 8.5:1 HE HE denotes high compression engine unit LE denotes low compression engine unit » DIFF RATIOS FOR TRIUMPH SALOONS:
MODEL
DIFF RATIO
Mk1 PI
3.45
Mk1 manual
4.1
Mk1 automatic
3.7
Mk2 2000
3.7
Mk2 2500 & PI
3.45
» DISTRIBUTOR MODELS & MAX ADVANCE FIGURES FOR TRIUMPH SALOONS:
(rpm quoted is distributor not crankshaft) Model From engine # Distributor Part # Max advance 2000 Mk1 high compression Lucas 25D6 Lucas 40967 11-13 degrees @2100rpm low compression -- Lucas 40975 15 degrees @2500rpm 2.5 PI Mk1 -- Lucas 25D6 Lucas 41236 11 degrees @3000rpm 2000 Mk2 ME1 Lucas 25D6 Lucas 41314 13 degrees @2500rpm ME50001 Lucas 25D6 Lucas 41378 9 degrees @1800rpm ME92301 Lucas 45D6 Lucas 41452 9 degrees @1800rpm ML20001 Lucas 45D6 Lucas 41621 11 degrees @2300rpm 2.5 PI Mk2 MG1 Lucas 25D6 Lucas 41236 11 degrees @3000rpm MG75001 Lucas 25D6 Lucas 41502 13.5 degrees @1400rpm MG82007 Lucas 25D6 Lucas 41543 13 degrees @1500rpm MG83620 Lucas 43D6 Lucas 41582 13 degrees @1500rpm 2500 TC Pre '74 engines (overseas) Lucas 25D6 -- 14 degrees @2300rpm MM45 Lucas 45D6 Lucas 41536 10 degrees@1400rpm MM20001 Lucas 45D6 Lucas 41624 7 degrees @1400rpm Australian market Lucas 45D6 Part #41654 11 degrees @2000rpm » BHP & TORQUE FIGURES FOR TRIUMPH SIX CYLINDER ENGINES:
Source: "Triumph Cars, The Complete Story" by Robson and Langworth » TRIUMPH SIX CYLINDER ENGINES Cylinder head applications chart
Exhaust valve (mm)
EGR hump
516323? 516323 ? 3.535 TR250 flat 32.0 8 5/16 yes ? 516799 516816 308351 3.400 Mk1 PI & Mk2 PI to MG50000. 2000 low compression 7:1. TR5/6 to CR 2845
flat 32.0 8 1/8 no yes 517610 517528 308351 3.300 Mk2 2000 to ME50000, Mk2 Vitesse/GT6 flat 32.0 8 yes (squared) ? 517610 517610 308351 3.300 As above flat 32.0 8 no ? yes 520819 218225 312388 3.400 Mk2 2000 from ME50001 to ME86355-86508, Mk2 GT6 dome 32.0 8 1/8 yes no 520821 ? 312388 3.400 Mk2 2000 from ME50001 Police Cars dome 32.0 8 1/8 yes no 520873 218225 312388 3.400 Mk2 PI MG50001 to MG82077 flat 32.0 8 1/8 yes no 520879 218226 312538 3.475 2500 TC & S (Australia '73) flat 32.0 8 5/16 no ? ? ? 218226 312388 3.475 2500 TC & S (Australia '74) flat 32.0 8 5/16 yes ? 520870? 218227 313247 3.535 TR6 Carb (Africa?)
7.5:1 compflat 32.0 ? yes (squared) no ? 219015 313248 3.400 Mk2 2000 from ME86355-86508, continuously from ME91075. Mk2 PI from MG82077. TR6 PI from CR2936. GT6 Mk3 2000: dome
2500: flat
30.3 8 1/8 yes no 520879 219016 313248 3.475 2500 TC & S MM1 onwards flat 30.3 8 5/16 yes no RTC2225 219021 313248 3.475 2500 TC & S (Australia) flat 30.3 (inserted) 8 5/16 yes (used) no