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You need to check your dynamic compression ratio vs your inlet valve closing angle.

I have amended a few things in my post above.
Below is also the spreadsheet I made up over the years for calculating the comp ratios.

It may be too much for some, but if you're handy with spreadsheets they make the task a lot quicker and easier.
Take note of the Octane listing vs comp ratio and ...

Clearance volume is the volume of the head gasket thickness and combustion space, and the crevice volume is from the top ring to the top of the piston. Best way to measure all this is to fill the cylinder with the piston .300" down the bore, then recalculate it if it was a flat top piston. This will ...

Hi Ed,

I'm going to weigh into this one now with regards to running high comp, camshafts, heads, etc.
Firstly I'm running a similar set up i.e. high top pistons, head, carb, exhaust and cam work. Standard diff ratio of 3.89
From experience you will need to run 98 as minimum due to detonation risk ...

Who is Admin then?

The ride is still pretty good. No harshness noted.

Yes they are the same offset.

Well after running these Maxxis whitewalls since I've rebuilt this car I've decided to ditch them. I've struggled with steering wander since I put it on the road after the resto. I've been through the alignment, drag link, and steering box thoroughly. Everything was rebuilt back then (7000 miles). I ...

I'm having thoughts of, as they say, "ruining a classic"

I will have lots of rust repairs to do anyway, and I'm really a bit bored with the standard running gear. I have 3 of these Leyland 4.4 alloy V8s sitting around in various conditions. I'm thinking of pretty much a stock set up engine (limited ...

Just a bump to see if anyone has two available. Thanks.


oh crap - there was one in the ute for you - I forgot all about the bloody thing :roll: :roll:


All good mate. You said it was the normal type without the boss anyway...............I think lol
You were probably so excited to see me ...

Blacky wrote: Sat Jun 27, 2026 10:34 pm

Craig Allardyce wrote: Sat Jun 27, 2026 9:40 pm Just a bump to see if anyone has two available. Thanks.

oh crap - there was one in the ute for you - I forgot all about the bloody thing

All good mate. You said it was the normal type without the boss anyway...............I think lol

Just a bump to see if anyone has two available. Thanks.

I would almost guarantee the regulator cut out coil has fused closed. When this happens the battery tries to motor the generator. This causes a massive over current draw through the wiring to the generator via the regulator. Either way it's worth checking. A fuse would also prevent the after effects ...

Plucking away at the tune. Todays fuel consumption figure 26mpg. Getting there.

A little reminiscing today too. It's been some 35 years since they've been together.
Ol Green and Grey sits in waiting for it's rebirth...

IMG_0003.jpg 90a4c20b-d2a2-4086-899d-e96e8a185e8e.jpg 1c44be77-11d8-4114-adf6 ...

We haven't seen this on our Classic Australian Wooden Powerboat Association forum which uses the same phpBB platform. Jason also manages that for us. Maybe a bit suss.

It may not flood, BUT the fuel height in the bowl will be higher as the float will take more force to close the needle against the higher fuel pressure. The higher fuel level will give that force to some extent, BUT, now you will be running richer, or in worse case spilling over into the throat ...