The V8 Owners Forum -

Thank you. I've got them well balanced when warm, it runs really well. Just trying to establish the balance for cold start in my head. I'd assume the fast idle on full choke should be somewhere around 1500 - 1700rpm? I might see if I can source a synchrometer that is less sensitive - Ensuring that t...

Hi, I’m looking for some advice setting the fast idle on my 3.5 running twin SU HIF6s. My engine will start with the choke out after a few turns but it is lumpy and poppy and does not have a smooth fast idle. With the choke pulled out, I can confirm that the fast idle quadrants in both carbs are max...

Just wanted to post a follow up after a bit of exploration this evening: Rerouted all of my HT leads as per Rovers recommendation (various diagrams on Google). 5 and 7 were running parallel / touching eachother which I've read can cause crossfiring / tracking. The idle seemed slightly smoother but t...

They are balanced yes. Drawing the same on each throat at idle and through the rev range.

I did a bit of reading on timing for 10.5:1 engines running E10 and the general consensus was anything between 0 and 4 degrees BTDC. The engine seems to pull nicely at 4 degrees (presumably down to ignition advance curve). It doesn't pink running a higher advance either. I trialled 8 degrees earlier...

Hi, I have a 3.5 from a Rover P6 running SU HIF6 carbs in a MK2 Hilux. The block is marked 10.5:1 and the engine has been rebuilt at some stage recently with new pistons, camshaft, rockers etc. I can't say for sure whether or not it has high compression pistons but I am going to assume so given that...

Just to follow up: - Brazed the pressure relief valve closed on the header tank cap (effectively making it a non-vented sealing cap). - Installed a 1.1 bar (15.9 psi) double sealed, vented cap on the radiator, which vents into an expansion tank. Just been for a good run. Heater gets lovely and warm....

Maybe you just have the wrong radiator cap on the radiator. My Land Rover has an overflow bottle that is lower than the the top of the radiator and is outside of the pressure area of the cooling system. When pressure in the system gets too high the cap releases pressure and fluid into the overflow ...

Struggled to source a sealing cap to fit my header tank. Luckily, the pressure relief valve in the existing cap has a brass core, so I've removed the valve spring and plastic innards and brazed the opening closed. Pic: https://photos.app.goo.gl/ezNGm1gN68wAbVMy9 Got a 15psi radiator cap coming tomor...

Excellent, thanks for the help.

Thank you for the replies, they've been really helpful. The point raised about the coolant being drawn out of the expansion tank into the system and then vented from the header tank makes perfect sense and it would seem to be doing so, given that the marked level is slowly reducing in the expansion ...

Hi, I've been scouring the forum for a couple of years soaking up information and it's been a fantastic resource. Last year I acquired a MK2 Hilux (YN67) with the Milners Rover V8 engine conversion, which I've been restoring and making roadworthy. The original SD1 3.5 had a worn bottom end, so we tr...