My rebuild thread! 3.9 disco v8

[bencorkill]

Nothing to do with your 4.6 heads is it??

There 3.9 heads as far as i am aware

 

[bencorkill]

When you are ready for the cam dial I will help you if you want.

Cheers will pm once my DTI arrives

 

[rangy35]

Do you have the cam shaft already? Do you have the cam card that came with it?

 

[Mr Noisy]

2479 heads are 4.6 mate, they're 10 bolt

 

[bencorkill]

2479 heads are 4.6 mate, they're 10 bolt

Ahh okay, so would it have come out the factory with them on ? Or has some one put a pair of 4.6 heads on it? yeah there 10 bolt

 

[fett]

send em to me, my blocks 10 bolt

 

[bencorkill]

Problem now sorted, all torqued up waiting for my new push rods, bolts and water pump then think should be nearly done

 

[bencorkill]

At a loose end waiting for parts, gonna paint plenum and rocker covers, what colour should i go for? im thinking a dark colour maybe black?

 

[discomark10]

Thats what im going for... can't go wrong with black n red!

 

[bencorkill]

Painted up my petrol tank, rocker covers and sump, i just did sump in grey primer so if it leaks can see what direction its coming from. Rockers primed then black, may mess about with red on top but not sure yet will do pics tomorrow

 

[Mr Noisy]

Ahh okay, so would it have come out the factory with them on ? Or has some one put a pair of 4.6 heads on it? yeah there 10 bolt

well, is it a 3.9 out of a D1 or a 4.0 out of a D2/P38?

Theyre both the same capacity, but the 4.0 had the 2479 heads.

 

[Mr Noisy]

And obviously you can only use composite gaskets with 10 bolt heads or unless you skim 14 bolt heads right down.

 

[bencorkill]

well, is it a 3.9 out of a D1 or a 4.0 out of a D2/P38?

Theyre both the same capacity, but the 4.0 had the 2479 heads.

As far as i knew it was a 3.9 as it should be from a d1 , but some body must have changed the heads at some point

 

[Mr Noisy]

Don't worry cos your heads are better and worth at least 100 quid as they are so you're onto a winner, you have the best valve stem seals and waisted stem valves so they will breath better, plus you can use composite gaskets so you're all good

 

[bencorkill]

DTI and stainless bolt set arrived , along with new oil pump.
Put sump on tonight.

For fitting new oil pump any advice on orientation? cant see any markings on the pump or a side thats different, will check in Haynes. Old pump had a marking but new one doesnt :s

Cheers

 

[Mr Noisy]

Tidy workshop at least, I'd start by sorting that out!

 

[bencorkill]

Tidy workshop at least, I'd start by sorting that out!

Its tidy up the back(well better) and pretty messy up front

 

[rangy35]

The oil pump does not matter about timing.......but please lube the oil pump with vaseline or assembly lube to help it create the vacuum it will need to draw the oil up and start pumping it through the engine.

So do you have the cam specs to do the phasing/dialling in?

 

[bencorkill]

The oil pump does not matter about timing.......but please lube the oil pump with vaseline or assembly lube to help it create the vacuum it will need to draw the oil up and start pumping it through the engine.

So do you have the cam specs to do the phasing/dialling in?

Sweet and yeah gonna fill oil pump with assembly lube. have a sheet that came with the cam have had a read but doesn't make to much sense to be yet

 

[discomark10]

Sweet and yeah gonna fill oil pump with assembly lube. have a sheet that came with the cam have had a read but doesn't make to much sense to be yet

might be a bit awkward doing it enough to get it primed well, at least with petroleum jelly its semi solid.. then turns to liquid around 30deg