Thread: 4.6 in the D2

Originally Posted by Eevo

thats from their website which hasnt been updated in several years.
have you rung them to confirm?

Talked to them 3 days ago...

hmm, so why did they quote me so much more.
glad i went other options

Phil has never updated the web site. There is no 4.6 short complete. TRS do reco v8's to order. I opted to keep the 4.6 heads. I read somewhere that the RR 4.6 heads had a slightly different port design. The extra torque is very noticeable and so is power especially if it's a high comp - stock high comp was 9.35:1. Generally Aust RR was low comp in the 4.6. High Comp is also better for LPG. I have a BRC Impco.

Cheers

yea but the 4.6 piston crown CC is 22.29,,whereas the 4L is 13.23,,

does it make a seat of the pants difference??
who knows,, but with compression, smaller is better

Late Edit, it would seem this is the difference between high and low compression Thor engines

Have I got this right?
The distance from the (edge?) piston crown to the center of its crank bearing?

Can anyone tell me the two measurements?
4L Vs 4.6

Thanks

I didn't know that it was smaller...so what does that take the comp too?

Cheers

who knows,,
I asked that question in the Tech forum and got a lot of dead air--
I've also just asked if anyone knows the different lengths between the 4L rods and pistons and the 4.6,, I think its around 4mm,,
see here part 3--
Buick 215 Rover 3.5 Land Rover 4.0 and 4.6 differences

Due to the typical response I get from posts in the Tech Forum, I've moved it here hoping for at least some info.