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Posts posted by Gadgetman
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Has anyone tried Valvoline VR1 10W60? I’m thinking of giving it a try at my next oil change. With the higher 60 grade it should boost oil pressure at idle after a good thrashing!
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25 minutes ago, Gary Flinn said:
All Vitesse and Herald models up to around 1970 should have 7 PSI Caps, then I have read they standardised on 13 PSI on a number of cars, Heralds/Vitesse/Spitfire/GT6 I believe?
Are you making sure the Overflow bottle is half full of coolant?
Regards
Gary
Thanks
its not half full but the end of the pipe is submerged (1/3 full)
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4 minutes ago, Pete Lewis said:
7 psi is correct it needs the secondary cap seal uder the cap to seal the filler neck or any shift to the bottle will fail
whilst there are two cap depths i doubt you will fit a deep cap to a shallow neck where as its easy to fit a shallow cap to a deep neck
I take it your car does not have the remote header tank ???
Pete
Hi Pete, nope no remote header just the std later rad with overflow bottle
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1 minute ago, johny said:
I believe thats the right cap and if the level in the overflow bottle never increases as the engine heats up you must have something else in the system that is absorbing the slight increase in the volume of the water as its temperature increases (about 400cc?). This expansion must be absorbed somewhere or something would burst so either you have a leak, air in the system or hoses so flexible they stretch to do the job!
Well there are certainly no leaks and I’ve bled the system thoroughly so it must be the new hoses expanding to take up the increased volume! I wonder if the cap is faulty ( pattern parts?) or is too long for the radiator neck so it’s already partly compressing the cap spring. Does anyone know what length the cap should be ( underside to bottom Of rubber seal on spring)
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What psi radiator cap should a Vitesse 6 have (without separate header tank) I’ve a 7psi cap but it never vents to the overflow bottle no matter how hot the engine gets even if the,radiator is brimmed full when the engine is cold....
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I sent the distributor back to Martin at Distributor Doctor and it seems either my coil or condenser was faulty and it caused burning off the points ( more than likely the coil ).
He replaced the condenser and points free of charge and I bought a new flamethrower coil from him.
1 week & 250 miles later it’s still running like a dream !
I sent the distributor on the Monday and it was back by the Wednesday all fixed! can’t ask for better service than that from Martin.
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Yup he did a great of mine which makes me think it’s a coil supply voltage issue. Sounds like a job for lunchtime tomorrow ( one advantage of working from home )
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Just had a brain wave this morning...
I wonder if I’m loosing the +ve supply to the coil or the voltage is low, easy check and a dodgy high resistance ignition switch could cause it or bad wiring to/ from the switch. Easy to prove with a wire slaved in from the battery +ve straight to the coil +ve and give it a try!
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Ok so a day of tinkering...
so the mixture was made 1/4 turn richer but made no difference on a run. After a bit of thinking I put an inductive timing light on the plug leads. It showed up a miss every 10 seconds or so on #1 cylinder, it was obvious when I slaved a plug into the lead and you could see the spark as erratic. . I couldn’t be sure if it did it on other cylinders as well. So condenser replaced- no change, rotor arm replaced no change, plug leads replaced, - no change, coil replaced - no change , distributor cap changed - no change..... even tried the spark plug incase It was shorted out.... guess what.. no change!
so has anyone any ideas?????
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8 minutes ago, Iain T said:
6J needles works in my modified engine. I think they are standard in a mk1 Vitesse. The 6ACs in a Mk2 where too lean on accelerating.
Did you have a damper spring fitted ?
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Here you go
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Thanks, yup ported and compression raised ( hence the 169 psi compression reading!) I”ll richen it up a 1/4 of a turn and see what happens then if all else fails it’s rolling road time. I have a local old school guy with a rolling road who understands strombergs and has been know to fettle needles to get the mixture right across the range!
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It doesn’t pink so doubtful if it’s timing
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So.... plugs all look good, nice light biscuit colour, 25 thou gap, Oil changed in dashpots to 20-50, points gap re-set to 15 thou. Compressions checked all 160-169 psi hot.
Took it for a run and all was ok... for a short while...then when under load it hesitates when the throttle is slowly pushed down, maybe not a full misfire? What about a weak mixture, would that do it, remember I said the plugs were a nice light biscuit colour.....maybe a Vitesse needs builders tea colour!! -
45 minutes ago, Pete Lewis said:
think the orig spec was SU a straight 20 and for strombergs engine oil
i have no idea how thin 3 in 1 goes when hot seems to resemble cats pee its not an automotive oil and unlikely to be temperature stable in a engine situation
makes me wonder why triumph and others do all the development work to then feel a door hinge/ bicycle oil is better
doesnt add up
the dashpot id quite clever in cold oil gives stiffer damping and as the engine warms up gives somewhat less
but damping piston rise is essential unless you like flat as a pancake performance and as you then need wider throttles you get
poor MPG combined with poor flat acceleration......and no SMILE
Pete
Thanks Pete
ive some sae30 running In oil so I’ll try that and go over the electrics again and start swapping bits if that doesn’t cure It.
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Std filters with the flexible tubes running to the front grill.
what’s the best grade of oil to use in the dash pots? Back in the 80’s I used to use 3 in 1 oil but I don’t think you can get that now? -
Where do people normally start investigating a miss fire under load?
The engine runs beautifully with the car stood but out driving it has a miss fire when under moderate load, I.e accelerating.
It’s a rebuilt engine with new electrics, ie plugs, leads, coil, condenser, re-build distributor.
apart from replacing components one at a time it’s going to be a pain to troubleshoot.
I need an old fashioned Crypton analyser! -
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I’m pretty sure it will hit the brake 4 way fitting if I have it rotated down but won’t know till I fit it in the car. Looking at other people’s pictures, theirs seem to clear the valve housing??
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Correct. Well that’s what has been done previously on mine !
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12 minutes ago, Pete Lewis said:
i only ever used the club ones on the 1600
Pete
👍
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What is a good short filter for a Vitesse as it needs to clear the brake pipe 4 way fitting and brake pipes.
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On 12/01/2021 at 16:11, Pete Lewis said:
Here’s mine I’m mocking up today on my spare engine!
Bearing
in Gearbox & Overdrive
Posted
does anyone know the RHP equivalent number for the 117511 bearing in the gearbox?
I've tracked down the 104433 to a RHP 58391D but cant find the other bearing. I am after some quality bearings for my gearbox rebuild and don't want the cheap and nasty ones that some suppliers sell!