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gt550k pet-oil ratio.

Posted: Sun Jan 14, 2024 3:30 pm
by graseal
Hi peeps, hopping to get bike running 2marro, and was goinig to do a pet and oil pre mix in the tank, just in case oil not comming through pump /pipes.

does anyone know the mix ratio per lt to oil.

thanks, in advance. graham :D

Re: gt550k pet-oil ratio.

Posted: Mon Jan 15, 2024 7:19 am
by Alan H
I just put 'some' oil in a pint of petrol - probably 20 -1 ratio, but before the bike is run and before the carbs are fitted, I 'run' the engine on the electric start with plugs out and the pump wedged at maximum flow. If you inject a small bubble in each of the oil lines before fitting the pump, you should see them all move down the oil lines as the engine spins.
Leave the tank off and just feed the carbs with a short pipe to them & syringe or funnel.
I also over oil everything during the rebuild - first start without the air filter so a small squirt of easy start in each carb will help it along, and I use a set of B6ES plugs to start & run it and leave them in for the first 20 miles or so until the smoke thins out a bit. Not as it it's going to get spanked straight after a rebuild is it?

Re: gt550k pet-oil ratio.

Posted: Mon Jan 15, 2024 1:21 pm
by graseal
thanks Alan you came to my rescue again.

I cant see any bubbles in pipes, I done several squirts of oil after the last air bubbles have gone !!.
I had used the starter with pump lever wide open several times, I'll mix some pet and oil and put some in each carb.

I'll get some easy start and B6ES plugs, and hope for the best.
I intend to keep rpm and speed down for about 500 miles, had crank and a rebore done.

thanks again Alan for your help.

Re: gt550k pet-oil ratio.

Posted: Wed Feb 28, 2024 12:24 pm
by graseal
all up and runing fine.

the engines alot better than it was.

graham :tw

Re: gt550k pet-oil ratio.

Posted: Thu Feb 29, 2024 8:23 am
by Alan H
Tip top!!!