The V8 Owners Forum -

No problem, need anything else checking just ask away

Steve

Hi Rossco,

took a measurement from the top of the plenum which is 6 3/4" and from the top of the rocker covers is only about 1/4" to 1/2" at the most

Just so we are sure that I have measured from where you need I took a couple of pics, you will have to excuse the mud I use it for playing ...

Do you still need the measurement? I should be able to do this for you on the w/e if you need the answer still or are you sorted?

Steve

So here we go then more info and hopefully getting sorted with my plan of attack!!

I spoke to Shaun at V8 Developments....and what a very helpful man he is!!!
1st I described what I have, gave him the engine number and he agreed yes it was almost definitely one of their engines, built for and then ...

Steve,

You could probably have the RP4 machined for the cam retention plate, that is the only difference I think, I could probably find out how much needs to be machined.
Yes please if not too much trouble that would be a good help :)
If you remove the cam you MUST number the lifters to the lobe ...

So then from those specs and what you are saying the rp4 is the best suited for what I'm after, I guess that the Torque Max would be better for complete low end power for an offroader or a lot of heavy towing but as an all round auto 4x4 the RP4 is the way to go?

Next problem then is ..... the RP4 ...

Mike I'm not sure if we have slightly crossed wires here but I'm not actually intending to run this with any sort of forced induction, the only reason I was considering the Real Steel blower cam was because of the post by Alan (bigaldart) post 6 I think? He suggested that that cam is a good all ...

Ohh and forgot to ask any ideas on the pistons?

I'm thinking perhaps the best option with the heads/pistons will perhaps be wait till I have the proper late 4.6 heads off when I'm taking the engine back out so I can compare everything then make the decision, only thing is I was hoping to built as ...

From those last 2 replies then I guess it is just the cam I require then and forget the springs and caps......which is nice!!

So then are we all agreed that the Real Steel Blower cam is the prefered option over the Piper 285?


Steve

Just been looking at the real steel blower cam, I see they say that I will need to use double springs and different caps, this will add another £130 or so, I'm on a bit of a budget but if it really makes that much difference I won't cut corners.

But I have been considering the Piper 285 which seems ...

I've had a chance to have another look at the engine, I've taken the heads and sump off, all looks nice and clean so far no nasty surprises so far!

I've done a bit of a check and the heads measure up at 35cc's they have been punch stamped 35cc on the front ends as well!

The pistons seem deeper ...

Use the later heads, refitting all the front end twirly bits will be a real PITA with the early head bolt pattern, for very little gain headwise IMHO.

Assuming it has the P38 dizzyless front end & serp brackets....

Just when I thought I had an answer some one else had to throw this in the mix ...

Thanks for that Kevin,

Nice reply looks like all in my favour to use the stage one heads, I will be taking them off just for inspection anyway so even if they used comp gaskets on the last build then I can still use steel this time, I will get them checked for flatness as well before putting them ...

Hi,
I'm starting to build a 4.6 to go in my Thor p38, I have bought a top hat liner-ed engine that has previously been back dated to fit in a Range Rover classic, it was built by RPI but has early heads, ERC 0216 Stage one prepped.

The question is which heads to use? should I just skim and rebuild ...

Ahh, just went back out to the garage and re read the number, and it is in fact......... RWV8D019946

So yes I guess that confirms it is a Ray Webb engine and also that I need to get to spec savers and sort my eyes out