hurricane36

Hi PhilW, Or should I say fellow Hurricane owner. If you fancy a chat I would be happy to do so. Not sure if yours is built spit/gt6 etc mine took me 10years!! There are not many of us only 56 Vincent ones and a few later have you/ will you use / make a center support the H section? I am still thinking about it. All the best Kevin ( specials sec & DVLA off. Tel 07946700004

Hi just noticed this. I have not received any emails check for the correct one in the club mag or just give us a call during the day again details on club mag. kevin

Hi if I have understood it correctly LED bulbs used place of HI/H4 halogen bulbs (headlamps) became illegal from 11th Jan 2021 and will be a MOT failure and subject to police and or a VOSA official action if found on a vehicle inspection. Could anyone confirm this?

HI, would anyone have a dome top piston I could borrow or they could let me know the diameter of the dome at its widest point and the height of the dome?  Also the cc for the volume at the top of the piston in an un-decked 2ltr engine along with the cc of a compressed head gasket. Thanks in anticipation. Kevin

Hi Colin, hopefully we can get together at the Hurdle Makers again soon? Do you know what cylinder head and pistons Lewis has used? and if you fancy a run out in April/May when I can leave home and meet up I'll put the kettle on and you can have a look at the Hurricane and my set up. Keep safe Kevin   

Whats the plan you ask? Well I have owned Triumphs over 50 years and decided that I should use up the special parts I had acquired on a special as my last Triumph so to speak. The car is a Vincent Hurricane (probably the last original to be built as I had had the body a long time!) based on a GT6 Mk2.  Phase 1 of the project is finished (iv been in the workshop over this year staying safe!) and once the restrictions are lifted and I have my jabs I hope to use it over the summer and sort out any issues. Phase 2 is to build a 2ltr Lucas PI engine for it. Again I have all the parts and a few heads to chose from, one being from a 2500S which I understand is the best flowing in standard form, however it is 3.475" in height so getting down to 3.300" for a CR of 9.5 :1 is possible but I understand there is sometimes a problem of core movement that occurred during casting  and I could land up in the water jacket apart from a load of swarf in the workshop. I was therefore considering the possibility of using dome pistons that were fitted to the late GT6 MK3 but this might not be possible too as the head would still need to be machined down and I could land up with no clearance in the head for the dome of the piston. Failing that 3 SUs or Webbers but I really fancy building a 2ltr PI and trying to sort this keeps me busy during these current problems. Sorry I cannot work out how to add a picture to the text showing the car -I'm a valve and steam man!!!! Kevin

Yes I have taken that on board. Now next question does anyone know if the GT6 dome pistons have the same dimension from the gudgeon pin to the top of the piston at the circumference as the flat top pistons? I ask this as I was going to use dome top pistons and an alternative cylinder head to adjust the compression ratio. However if they are shorter to accommodate the dome of 8.6cc to keep the capacity of the engine at 1998cc then the calculations will be the same. If they are not shorter the engine capacity of the Mk3 GT6 was 1998 - (6 x 8.6) = 1946.4cc Or am I talking a load of rubbish Kevin

yes you are correct  I thought something was incorrect thanks obvious when you think about it thanks kevin

HI I hope to undertake my engine building in a few months time so have been checking the compression ratio so that I could adjust it if required. Could I have any comments as to the calculations correctness or not as the case might be. 1998 / 6 = 333cc  Bore with a + 0.020" (0.508mm)   = 75.208mm  radius 75.208/2 = 37.604mm Stroke 76mm    compressed head gasket thickness  = 3.5cc non decked volume = 2.7cc swept volume 3.1416 x (37.604 x 37.604) x 76 = 337.6234cc combustion chamber volume (actual arrived by via pippette method) = 40cc CR calc (337.6234 +3.5 + 2.7 + 40) / 40 =  9.596 to 1 I was expecting a combustion chamber capacity in the 35 to 38cc range? Thanks Kevin    

Has anyone machined a 2.5 TC head (529879 / 219016 / 313248) from 3.475" thick down to 3.300" thick and if so has there/was there any issues? Having a look at the casting I think I can see where it was just increased in thickness on the bottom (block face) from 0.197" (5mm) to 0.355" (9mm) thick. This junction is in the region of where a 3.300" thickness would be. So it looks like Triumph did not change the internal casting former occupied by the water in the head. Any confirmation or not would be helpful. If there was an issue I might be able to use dome top pistons. ta Kevin

If anyone needs the bearing shims and spacers for the rotflex hubs on the GT6 Mk2 and Vitesse a chap is making them again and they are advertised on Ebay.  

Mike. Thanks for reply your dimension looks to be be the same as mine as I have 50mm from the popper to the B post (the flat that the lock keep fixes on) that I was measuring to so 50 +50 + 1743 = 1843. Mine was 1842. I must have a rubbish hood. Any thoughts on a good hood supplier? I been in contact with Prestige Hoods but service so far very very poor 1st email not answered 2nd email after phone call said sorry they will get back to me over a week later still no contact, they obvious do not want my money. Kevin

Could someone help me with a dimension regarding a MK3 hood. I am building a Hurricane based on a Mk3 and would like conformation of the dimension around the rear upstand from B post to B post at the junction between the rear deck and the upstand for the hood poppers.  I have an old hood but when I tried to fit the hood the length of the rear bottom edge was too short by about 30mm in total ie 15mm each side even after leaving it for a few days in the warm. I am trying to establish if its a bad hood or the rear upstand in the GRP is oversized. The dimension I have is 1842mm ta Kevin

Hi can anyone help. I am trying to establish what gearbox and diff should have been fitted to my 1969 (Dec) GT6 MK2. The car was exported to Hong Kong (Jan 1970) and re imported in the mid 1970's The BMH Cert states that it was fitted with OD. So I assume the Serial numbers should be Gearbox KC 50,001+ and Diff KD 50,001+ Yes/No On another matter did triumph ever stamp their gearboxes numbers with the suffix S and also fix a tag on the gearbox extension with a four digit serial number and if so what did it indicate?   ta