Classic 44 Year old, seized, corroded V8 rebuild thread.....

[ovalandrover]

when 10 to 1 pistons were fitted you could get 100 octane leaded petrol now with unleaded you lose the lubricating quality of the lead so when using LPG you need some flash lube or something similar to prevent valve recession if you have not got stellite valve seats .
Vehicles made for unleaded fuel have already got seat that will prevent this .I dont know if the RR you have has got them but I would use the Lower comp pistons and then you can run on unleaded fuel with out preignition which can kill an engine.

 

[wammers]

It's only going to be a couple of degrees difference surely. . ?

The spark is advanced from the static setting dynamically by the distributor at higher RPMs. The distributor fitted to the LC engine may not give enough advance for the HC engine, you will have to look at the parts list and see if a different distributor was fitted to HC engines. It's not quite as simple as just fitting higher compression pistons.

 

[ukadamwest]

Thanks Wammers..

Indeed it seems you are correct, the Parts Cat shows a different dizzy for the 9.35 and the 8.13/8.25 CR engines and a different vacuum module also.

The PC shows an electronic ignition dizzy for the CR differences

 

[wammers]

Thanks Wammers..

Indeed it seems you are correct, the Parts Cat shows a different dizzy for the 9.35 and the 8.13/8.25 CR engines and a different vacuum module also.

The PC shows an electronic ignition dizzy for the CR differences

There you go. I did a bit of useful trolling.

 

[ukadamwest]

took you a bloody long time to respond too !

 

[wammers]

took you a bloody long time to respond too !

Sorry about that. But the difference is i was talking to someone with more than a grain of mechanical nous, not someone with the mechanical knowledge of a glow worm.

 

[Saint.V8]

Who's the Glow worm Tony??

Hope it is not a reference to either Adam or myself !!

 

[wammers]

Who's the Glow worm Tony??

Hope it is not a reference to either Adam or myself !!

Not at all, you know better than to ask that.

 

[Saint.V8]

 

[ukadamwest]

I did a bit of useful trolling.

There's a first time for everything it seems !

 

[wammers]

There's a first time for everything it seems !

It would seem so.

 

[ukadamwest]

so.. i'm about to order the 9.35:1 pistons.

apparently it just needs a slight advance on the ignition

 

[ukadamwest]

got a dispatch notice on the Pistons, they are on the way..

 

[Saint.V8]

Grand....

Tomorrow evening is to strip the other head and see whats what with the valves.....but the other head is the one with the valves stuck open and the valves don't look good!!

 

[ukadamwest]

Ant.. I won those overhauled heads we looked at..

no *need* to strip the other head down, can do it at leisure for S**ts and Giggles

 

[tomcat59alan]

Ant.. I won those overhauled heads we looked at..

no *need* to strip the other head down, can do it at leisure for S**ts and Giggles

Sounds like a romance made in heaven. xxx

 

[Grrrrrr]

Sounds like a romance made in heaven. xxx

I believe the term is a bromance.

 

[ukadamwest]

atch! the pair of you are just jealous

 

[ukadamwest]

After Ant's efforts to recover the pistons.. I thought I would have a go... 30 minutes later with some elbow grease here's the first...

Only joking.. New pistons and gudgeon pins arrived

 

[brianp38dse]

Hummm shiney, keep up the good work shame Ant couldnt save the pistons, but loveing every new thrilling installment