RedTrev

Also, are you testing with engine cold? I tested mine cold recently (with sliders lifted & WOT) and got readings of 10 bar (~145psi) across all 4 cylinders, but I remember they were about 12 bar when engine was hot.

Booked Friday to Sunday, pitch 30.

What about the sliders in CV carbs, should they be lifted during compression test? If left down will they restrict the airflow enough to lower the compression reading? Just a thought

Yes, a great run-out, thanks Rich you picked the perfect day; the weather not so good in Wales today, in fact the total opposite to yesterday . Who got seagull-splattered, I didn't see that!

At the moment there's Tony, Jez and me meeting at the A45 BP petrol station in Cov. If anyone else plans to meet there let us know before Friday night so we know who to expect and not run off without you

Meet at the BP garage on the A45 with a plan to leave there at 08:00, that should get us to the Ponderosa for 10:30ish https://maps.app.goo.gl/As8MUxJW1GZSSGPP9

Nice one Rich, suits me, and sounds great. I won't be heading home as I plan to meet up afterwards with my brother, who'll be camping midway between Barmouth and Harlech, and stop the night.

The link above is the Bogg brothers guide to bike carbs. You'll have to sift through the ads now though; the guide used to be ad free on the Classic Ford Mag site but I can no longer find it there.

https://www.scribd.com/document/434558133/Classic-Ford-Ultimate-Guide-to-Bike-Carbs#:~:text=and throttle response.-,For Ford engines%2C a typical effective setup is a set,to their inlet port size.

If ZX6R carbs are anything like the ZX9R carbs in their basic layout, then the hole in the left in your picture is the air corrector for the pilot jet and the hole on the right is the air corrector for the main jet. The pilot and main jets are located in the fuel chamber on the underside of the carb.

Some club members are camping over at the showground tonight so they'll be there tomorrow.

Yes please, put me down for one place. Ta

Yes, I used that chart to determine the age of my engine block (HY, therefore 1987), but you're right, that doesn't mean you assume the head, or any other parts of the powertrain, are the same age or from the same donor vehicle.

My engine is also a 1987 2.0L 205 block Pinto, with a definite "I" stamped on the head. The inlet ports are round (not egg shaped like on the injection heads) so I choose to assume it's leaded and add Castrol Valvemaster to the fuel (1 ml per litre of fuel).