Page 1 of 1
Thor 5.0?
Posted: Sat Oct 01, 2016 3:42 pm
by Tony22593
Hi all,
I'm in two minds whether to build a 4.6 in my discovery 2 or a 5.0. My question is that would a Thor inlet manifold be able to cope with 5 litres? Or a modified version of it? I would like to think it would be able to give a lot of torque maybe 350 lb ft? Has anyone done it?
Posted: Sat Oct 01, 2016 8:45 pm
by ChrisJC
I have seen it done. There was a Discovery II with a 5.0 or maybe even a 5.3 litre engine in it. I saw it at the Land Rover Show in Peterborough last year, but I can't remember who did it.
Chris.
Posted: Sat Oct 01, 2016 9:26 pm
by Tony22593
That's good to know. Wonder what torque that would have made!!
Posted: Sun Oct 02, 2016 8:18 am
by ChrisJC
I wonder if it was ACR (Automotive Component Remanufacturing). Not sure but that's the best my brain can come up with!
Chris.
Posted: Sun Oct 02, 2016 11:27 am
by Tony22593
The Thor manifold was modified by ACR you think?
Posted: Sun Oct 02, 2016 12:48 pm
by ChrisJC
Don't know to be honest.
Chris.
Posted: Mon Oct 03, 2016 9:56 am
by Eliot
From my rover manifold archive, Jonathan Douglas (JE Engineering) commented:
'the throttle body has a 68 mm throttle as standard and again, we often take this out, in this case to 71.5 mm. The Thor manifold, when used with either a standard cam or a mildly tuned cam, gives a strong torque peak at around 2,000 rpm, much higher than that achievable with the Lucas plenum design, but even with careful gas-flow work the power is limited. We find it difficult to achieve more than around 280 bhp with this manifold, where a similar amount of effort on a Lucas Plenum manifold will yield 320 bhp (but with less torque below 3,500 rpm'
http://www.mez.co.uk/ms12-new.html