iomgt6

hi all, sorry if this has been asked before but what grade of oil should be used, 1971 gt6, thanks, paul

Hi all, I have delayed in replying as I have now sorted the problem fitted new spark plugs, fuel system is now electric pump and filter in the boot with braided hose running offside straight to carb, I also realized the accuspark coil should not have a voltage stabilizer, they do 2 types a red or blue coil, blue is with stabilizer red not, they had sent me a red, I believe this was the main cause of the problem, removed the stabilizer altered the wiring and now she runs lovely,, another mystery solved, thanks for all your replies, Paul.  

Hi all, I have delayed in replying as I have now sorted the problem fitted new spark plugs, fuel system is now electric pump and filter in the boot with braided hose running offside straight to carb, I also realized the accuspark coil should not have a voltage stabilizer, they do 2 types a red or blue coil, blue is with stabilizer red not, they had sent me a red, I believe this was the main cause of the problem, removed the stabilizer altered the wiring and now she runs lovely,, another mystery solved, thanks for all your replies, Paul.  

Hi all, I have delayed in replying as I have now sorted the problem fitted new spark plugs, fuel system is now electric pump and filter in the boot with braided hose running offside straight to carb, I also realized the accuspark coil should not have a voltage stabilizer, they do 2 types a red or blue coil, blue is with stabilizer red not, they had sent me a red, I believe this was the main cause of the problem, removed the stabilizer altered the wiring and now she runs lovely,, another mystery solved, thanks for all your replies, Paul.  

are right, accuspark fitted new with rotor arm and power coil, timing done at 6 deg btdc and re-checked, advance vaccum working ok from carbs, spark plugs correct grade and read a nice auburn colour, engine temp normal all the time as power fan comes on when needed, it used to over heat until fitting of alum rad and unblocking of water ways, power fan creates the heat under bonnet, so engine overheat is not the problem, new mechanical fuel pump fitted, my thought on fuel vapour lock is mainly because when the rad fan comes on (which is a sucker fan) the heat that it blows from the fan when on is a lot and its blowing onto the fuel pipe that runs round the front of the engine and the fuel filter,  carbs are getting hot (HS6's) especially the front one, I do have heat shields on them, as I mentioned before the fuel filter (see through) sometimes seems low in fuel another time seems full, now I have stopped the car engine off the fuel looks low in the filter then going back sometime later without touching the car the filter looks quite full as though fuel has come though as its cooled off, strange eh, thoughts please, Paul.

hi glang, yes I have seen it mentioned that someone on here did remove a section of the seal to try to improve the problem but don't know the result, thanks for reply, Paul.  

Hi All, don't know if this has been covered before but I am thinking of fitting plastic louvers to the bonnet to try to get rid of some heat, I am a little reluctant but I am suffering from fuel vapour lock (I think) , the car runs fine but after 3 to 4 miles I start to get an irregular misfire which gradually gets worse, I notice looking at the see through fuel filter, fuel looks low, then looking again with the engine off it can look full again,  I have just fitted another fuel pump (mechanical) as I thought that was faulty, the engine is not overheating as I have installed a very powerful electric fan, trouble is the fan when it comes on blows that much heat around under the bonnet everything feels hot including the carbs, all thoughts gratefully received so thanks in advance, Paul

ok thanks for comments, did the timing again and looks like it was retarded strange as I had fitted electronic ignition not long ago and did the timing then, I also noticed the small pipe from the carbs to the dizzy was off at the carbs end, haven't tried the car yet as raining hopefully this will have sorted it, I have been thinking of fitting the phoenix manifold anyway so is this a good mod it would be the 6-3-1 version and will it fit my current exhaust its the usual stainless split to 2 pipes at the back thanks again. Paul

Hi All, seriously thinking of buying the phoenix exhaust manifold as I have I think I may have a problem with gasses not getting away quick enough, don't know whats in the engine as it was rebuilt before I bought, the guy I bought it off doesn't know either, now the engine is fitted with twin SU HS6 carbs, why I think the gasses aren't getting away is I get a loud explosion from within the engine bay, engine, last time out I had 2 bangs simultaniously and the engine stopped, leaving it to cool down for 10 minutes it then started ok, so I ask is the engine being over carbbed, although checking plugs they have a nice ebony colour on the tips but black sooty around the perimeter, the plugs are NGK equivalent to cham N9Y. my final question is if I fit the Pheonix would you put exhaust bandage on or not and why, thanks for any replies, Paul.  

hi Glyn, sorry just picked up your message, I have these on ebay at the moment my user name on there is pauljanben, regards paul

hi Andy, have you sorted the uprights out, I have a pair which I have taken off my gt6 mk3 rotoflex they seem in pretty good order, I have fitted alum ones to my car so no longer need these, Paul

Hi All, I have 165/70 x 13 on front and 175/70 x13 on rear alloys what pressure should I put in these for general driving, the manual states 20 psi front and 24 psi rear but of course this is for standard wheels, what is the max width wheel size I could put on the rear without modifying arches, finally would the car handle better with a larger diameter wheel and low profile tyre but maintain speedo accuracy, sorry if this has been asked before, grateful for your thoughts, Paul

have just noticed a fibreglass bonnet for sale for GT6 wondering if anyone has any views on this, I am thinking that it might be a good weight saver and rust prevention.

Hi all, my gt6 mk3 1971 seems to have a curious bonnet fitted, it would appear the power bulge is made of fibreglass, the rest of the bonnet is steel but looking on the underside the hole for the power bulge in the steel is like an elongated elliptical shape that is not the shape or size of the power bulge, I now believe this is not a standard gt6 bonnet so what is it, what your thought people, Paul.

Hi all, thanks for replies, been busy marshalling IOM TT, anyway Paudman, work done by a Birmingham company old family business and I have to say very pleased, I had some minor dents in the front bumper the owners son took them on and I cant tell now where they were, Castle Chrome, Dudley, West Midlands, I am in no way involved with this company but would certainly recommend them, realistic prices too.