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Thanks for all the feedback. I'm leery about over/mis-caming the engine. The 2.5L camshaft timing is the same as that specified for a 2.25L (8:1) only retarded by 5deg. Nothing terribly magical about that. So I wondered what ACR really did when they created this new grind that they claim is a...

I’m considering putting an ACR Power Plus camshaft in my 2.25L engine. Before I do, I would like to be able to compare its specs to the existing 2.25L and 2.5L cams to see where and how it differs. I have all the specs (except lobe lift) for the stock 2.25L and 2.5L cams but not for the ACR...

My desire for more power by upping the CR to 9:1 is countered by my desire not to have to source/buy higher octane fuel. Octane ratings seem to be based on differing standards in UK and here. UK uses the RON standard for octane rating and Canada (and US) use the AKI standard. If I want to...

Hearing protection is pretty much required in my 2.25L as it is, so I can't imagine amping that noise up with a 200TDi. The truck will probably not be used for long haul driving so I'm not to fussed about mpg. Also, because I probably won't be putting massive miles on the truck it is harder to...

Thanks James. I'll have to look into that con rod more if I continue down this path. If I do I would probably have to use 2.5L pistons, conrods and crank (as a set). Even then I would still have to deal with possible issues including: bearing size/clearance, cylinder sweep, bottom-end...

Interesting. I did not realize that the UK was considering reduction/removal of diesel usage from private, non-commercial vehicles. Given the global intent to reduce emissions in general and all the trouble that manufacturers of new passenger diesels seem to have gotten into over falsified...

Thanks for the reference. I had been corresponding with Roland at ACR already. He sent me a quote for Stage2 head, PP camshaft, etc... I like the idea of going this route as I have read good things generally, but it is expensive...especially when I must include shipping allowance...

Thanks for all the replies thus far! Lots of good ideas and feedback. One of the challenges here in Canada is that we do not have access to parts (particularly used parts) that you have in the UK or, for that matter, any other country that imported a lot of Land Rovers (which oddly Canada did...

I now see there is an Engine/Series forum. Maybe this thread should have been posted there?

Sorry, this is a bit of a long post…so please bear with me I have a 1985 Series III (ex-MOD) 109 and, before I commit to any further restoration, I would like to upgrade my 5MB, 2.25L engine to see if I can get more top end speed (at lower RPM using an overdrive) without overly compromising the...

Nice pics! I can see that I'm on the wrong side of the pond!

Hey All, I live in Alberta, Canada and have owned an ex-MOD 1985 Series III, 109, 3Dr HT (a.k.a. Betty) for about 6 years now. Betty was originally a British military vehicle brought over for/by the British Army Training Unit Suffield here in southern Alberta. I have a fair bit of information...