Classic cars forum & vehicle restoration.

[Jonv8]

I have a very smart Triumph as per the heading in my workshop.A friend has just bought it from a dealer who it seems was selling boxes of expensive kippers.... It has come to me to check out the lubrication system,the oil pressure gauge,(In the tank top panel) only goes to 15psi as a max reading.Beyond that there is a redline,which the needle goes straight past on its way to wrap itself against the stop.My test gauge shows 30psi at a cold idle and 55-60 max when revving with a warmed motor,with a small pressure drop at idle.All exactly as you would expect from a cold engine,warming up.
So my question is - Does anyone know what gauge should be fitted,as it seems the engine is behaving well,sounds good,pulls well etc.I think whoever built it just used the gauge that they found that fitted the hole.The engine runs a double plunger pump in the normal Triumph style,but I have no spec sheets or manuals to say what the pressure should be.

[christine lowery]

hi
i had a triumph 6s 600 side valve a few years ago and i was running 650 and 750 triumphs at the same time, the pumps were inter changeable so i think knowing triumph they would have used the same pump for all models
of that era so it maybe easyer to look up tiger 100s and there like

chris

[Ashley]

I suspect that the T70 has a roller bearing big end and that oil pressure should be quite low, less than 15 lbs whereas a Tiger 100, all the twins have car type big ends that need oil pressure to protect the shells.

It's at least forty years since I had a triumph single in bits, so I don't remember the route the oil takes, but it sounds to me as though there might be a blockage, so best get a manual and find out how the oil supply works and whether the big end is pain or a roller type.

[Jonv8]

I was thinking its probably a roller big end,which obviously just needs a flow of oil rather than pressure like a plain white metal job.In which case the 15psi gauge would be plenty.
I'll try to get hold of the Triumph marque expert from the VMCC,see what specs they have.
Kind regards, Jon.