What Rover V8 do I have?

mrcheese · Post by **mrcheese** » Tue Jul 17, 2007 11:09 pm

This is the engine number of the one I have been given and started to strip.

45112578D

This puts it into the P6 range, but the compression ratio is 9.25:1 and this is not listed.

It has twin SUs and a fuel pump that is driven from the timing cover.

Does anyone have anymore information?

Thanks,

Paul.

jrv8 · Post by **jrv8** » Tue Jul 17, 2007 11:33 pm

Hi Paul,
It's a late P6 engine probably 75-76.
Rope seal front cover, but neoprene rear seal, with the usual P6 small valve heads and short reach plugs.
Jim

mrcheese · Post by **mrcheese** » Wed Jul 18, 2007 6:10 pm

Many thanks.

I will take a look at the heads and the cover in more detail at the weekend. I intend to use my current EFI set up and heads anyway. I assume I can fit a later timing cover?

Regards,

Paul.

jrv8 · Post by **jrv8** » Wed Jul 18, 2007 8:54 pm

Hi,
Yes the SD1 cover will be a straight swap, but if you're intending to use the R/R version, you'll need to also use the R/R pulley set.

mrcheese · Post by **mrcheese** » Wed Jul 18, 2007 9:35 pm

That is great thanks. Yes, I do intend to use the RR type. I have this on the current engine so I will just the pulleys I have.

It is going into a Defender 90. I am looking to build lump with low down torque (and to learn how to do it and have some fun). Not a high revving race engine. If anyone knows any special details that I need to take into consideration with this engine please let me know. The current engine is a 9.35:1 from a Range Rover with EFI.

Lots of (possibly) dumb questions to follow.

Regards,

Paul.

ChrisJC · Post by **ChrisJC** » Thu Jul 19, 2007 6:57 am

If you want torque, I would say that the camshaft choice is the most important issue. Not that I have a suggestion!

Chris.

The Original Tom · Post by **The Original Tom** » Thu Jul 19, 2007 9:14 am

If you want more torque at low revs - a standard 3.9 cam (assuming you have a 3.5) will do the trick nicely. Only £46 from what I remember too.

Of course if you want to spend tripple that, then Mr.Heath used to swear by the RPI 'torquemax' cam so I believe...

ChrisJC · Post by **ChrisJC** » Thu Jul 19, 2007 1:15 pm

I've got the RPi Torquemax, but it's in a 4.6, and I've got no figures or benchmarks to reference it to. But it does set off very well if you nail it!

Chris.