Thread: p76 v8 in 1972 2 door range rover

Originally Posted by Davo

I'd go for a 4.6 from these guys any day:

Rover V8 Engines for Range Rover, Discovery and Defender, remanufactured and new options available

I will stay with the 4.4 thanks- spent a long time looking for one in the uk and I hate the 4.6 (we have plenty here, lots of liner problems) but each to there own

Anyway just a simple question for you 4.4 owners. Do you run them on unleaded?

I was just reading a pdf manual I got and it said the valve inserts were cast iron- wondered if it was a bit soft for unleaded?

I thought you'd say that, and fair enough. But once Turners have been at a 4.6 you aren't going to have any liner problems. Maybe you could keep them in mind as a back-up in case the P76 donk doesn't work out.

You know, it's funny but people have been running these engines on unleaded for years and they seem fine. Usually, the big thing with unleaded was not to flog the engine too much. It depends what you're planning. If you're going for a super-duper rebuild then it won't be a big deal to get the seats replaced. Otherwise you may as well leave the seats alone and use some additive if you're happy with that.

Originally Posted by Davo

I thought you'd say that, and fair enough. But once Turners have been at a 4.6 you aren't going to have any liner problems. Maybe you could keep them in mind as a back-up in case the P76 donk doesn't work out.

You know, it's funny but people have been running these engines on unleaded for years and they seem fine. Usually, the big thing with unleaded was not to flog the engine too much. It depends what you're planning. If you're going for a super-duper rebuild then it won't be a big deal to get the seats replaced. Otherwise you may as well leave the seats alone and use some additive if you're happy with that.

Thanks Dave, yeah the thing is after turners have been at it I will be at least £2400 +++ poorer too. The p76 lump only cost me £400 so if I can drop it in after some mild fettling it should be good to go IF not the parts actually seem cheaper than the uk for you lot

I have heard so many Ideas about those valve seat, some say good as is and some say its just the same as the normal rv8 and should be ok too. I need to look in my leyland book for the 3.5 and compare the way they describe the seats with the 4.4 manual.

Just as point of note they have now been saying over here that the top hat liner solution on the 4.6 etc is no guarantee of a solved problem and several of the builders are irontiting the engines after the re-build to try and prevent warranty issues- that smacks of desperation to me lol

I rebuilt a 4.4 to a 5 litre many years ago.
The crank was machined to suit holden bearings and new liners pressed in to suit 202 holden pistons. It was 20 years ago so the details are a little vague but from memory I also used holden lifters. Holden parts are available anywhere. Oh, head gaskets were 3.9 rover ones.
The problem will be finding a good 4.4 with a good crankshaft to start with.

Crankshaft Rebuilders in Melbourne did the machining and may be able to help with some useful information.

Originally Posted by amtravic1

I rebuilt a 4.4 to a 5 litre many years ago.
The crank was machined to suit holden bearings and new liners pressed in to suit 202 holden pistons. It was 20 years ago so the details are a little vague but from memory I also used holden lifters. Holden parts are available anywhere. Oh, head gaskets were 3.9 rover ones.
The problem will be finding a good 4.4 with a good crankshaft to start with.

Crankshaft Rebuilders in Melbourne did the machining and may be able to help with some useful information.

Thanks, I hope the cranks ok for range rover duties I am trying to keep away from the 94mm bore you went to but I am sure it was a great engine.

Its got enough power and more importantly torque for me in more or less standard form. I think it has be re-built in the past as it has some interesting engravings on the rocker assemblies lol

Hi guys, what do you think of these brands for quality?

QH, NAK and Clevite.

There is one in a yellow packet too, any ideas what that brand would be?

We dont have any of them over here lol

Hi, thanks for that. Where can I get air filters for a holley carb V8 3.0. Navigator