Scooby 2.5 conversion?
Discussion
Had an interesting chat with the chaps down at Gatwick Subaru last week about various engine upgrade options, one of which is replacing the 2 litre lump with the North American 2.5 block.
350 bhp & 350 ft/lb torque sound lovely to me. I've always been against modding as I have a nice warranty to protect, but this might be tempting for early next year.
They also do an upgraded turbo for about half the price.
The question is... is this just the short end of the wedge. And will I have any wedge left at the end of this? :D
Has anyone had any experience of these upgrades? There are lots of people on scoobynet & P1 owners club who talk about it, but no-one I've found yet who has done it?
Cheers.
350 bhp & 350 ft/lb torque sound lovely to me. I've always been against modding as I have a nice warranty to protect, but this might be tempting for early next year.
They also do an upgraded turbo for about half the price.
The question is... is this just the short end of the wedge. And will I have any wedge left at the end of this? :D
Has anyone had any experience of these upgrades? There are lots of people on scoobynet & P1 owners club who talk about it, but no-one I've found yet who has done it?
Cheers.
Thought about this myself (secret plan for when the MAF fails and Mrs Rusty can be convinced a new engine is necessary) but the costs do seem to build quite exponentially as you've obviously read on scoobynet.
Original clutch only good for around 250lb/ft. so another £300 for an upgrade.
Gearbox only good for 350lb/ft so fit the six speed for £1500
2.5 Engine internals not great above around 350bhp so need new pistons and rods. and a turbo and and and
Probably cheaper to go to Litchfield and buy it new with the work done and a warranty.
Original clutch only good for around 250lb/ft. so another £300 for an upgrade.
Gearbox only good for 350lb/ft so fit the six speed for £1500
2.5 Engine internals not great above around 350bhp so need new pistons and rods. and a turbo and and and
Probably cheaper to go to Litchfield and buy it new with the work done and a warranty.
Isn't this what the Litchfield Type 25 is? An STi Type C (I seem to remember) with a 350bhp+ 2.5L engine and bags more torque than the 2.0
(Yes, it is 350-odd - they do some tuning and remapping on it)
Edit: Damn - Litchfield have already been mentioned. And there was me thinking I was going to impress someone with my knowledge of Scoobies.
>> Edited by JonRB on Wednesday 31st August 21:02
(Yes, it is 350-odd - they do some tuning and remapping on it)
Edit: Damn - Litchfield have already been mentioned. And there was me thinking I was going to impress someone with my knowledge of Scoobies.
>> Edited by JonRB on Wednesday 31st August 21:02
The 2.5 all sounds nice on paper...
But it's awfully expensive to get it RIGHT. There's lots of little problems along the way that you don't hear about until they bite.
IMHO, you'd do better £ for £ tuning a 2.0 if your project fund is less than about 4k. The std 2.0 internals will take a fair amount of punishment provided the mapper knows what he's about. (I've mapped an old WRX to make 1.5 bar reliably before now - it's still going too
)
My STi 5 RA is faster to 100 than our Griff 500 (It runs out of puff beyond that...) and only mildly modified (ECUTek 3, panel filter and full H&S exhaust) at that. (<£1k's worth at new prices.)
That said, the extra torque of the 2.5 is very nice to have... You don't have to rev like mad to get anywhere.
But it's awfully expensive to get it RIGHT. There's lots of little problems along the way that you don't hear about until they bite.
IMHO, you'd do better £ for £ tuning a 2.0 if your project fund is less than about 4k. The std 2.0 internals will take a fair amount of punishment provided the mapper knows what he's about. (I've mapped an old WRX to make 1.5 bar reliably before now - it's still going too
) My STi 5 RA is faster to 100 than our Griff 500 (It runs out of puff beyond that...) and only mildly modified (ECUTek 3, panel filter and full H&S exhaust) at that. (<£1k's worth at new prices.)
That said, the extra torque of the 2.5 is very nice to have... You don't have to rev like mad to get anywhere.
Hmm, not sure what the likely fund will be but probably a combined package of 5-10k but would also like to get some suspension mods too and upgrade the driver a bit.
My only real worry about seriously upgrading the 2 litre lump is serious lag to get the power gains. The added torque of the 2.5 comes with fewer minuses?
2.2 or 2.3? I haven't heard about those.... tell me more!
My only real worry about seriously upgrading the 2 litre lump is serious lag to get the power gains. The added torque of the 2.5 comes with fewer minuses?
2.2 or 2.3? I haven't heard about those.... tell me more!
I've seen Scooby 2.5 conversions with well over 500bhp. Of course this involves basically rebuilding the engine from a bare block (pistons, rods, crank, cams, turbo, etc etc etc) and costs about £23,000. I beleive Graham Goode Racing have a fair bit of experience with 2.5 conversions
Mr E said:
Isn't this what the Litchfield Type 25 is? An STi Type C (I seem to remember) with a 350bhp+ 2.5L engine and bags more torque than the 2.0
Yup.
Cracking car, but rather expensive.
It is a bloody bargain given the performance. £34k, which is about what your car cost 10 years ago isn't it?
Very true - it's a fantastic car. My only beef with the latest generation of Imprezas (aside from the type C import) is that they're all getting a little porky.
The P1 is the lightest of the lot (AFAIK) and hence part of my interest in improving what I have rather than buying a new one (quite apart from the fact that I'm buying a new flat too).
stroker kits aren't so interesting - part of the attraction of the 2.0 is that it's tried and tested, as is the 2.5
I guess I'll just need to have a chat with Graham Goode or Roger Clarke before taking the plunge. I've no intention of going down the forged internals route - that's getting into silly money, but 350 lbs of torque has to be the target (currently 260).
The P1 is the lightest of the lot (AFAIK) and hence part of my interest in improving what I have rather than buying a new one (quite apart from the fact that I'm buying a new flat too).
stroker kits aren't so interesting - part of the attraction of the 2.0 is that it's tried and tested, as is the 2.5
I guess I'll just need to have a chat with Graham Goode or Roger Clarke before taking the plunge. I've no intention of going down the forged internals route - that's getting into silly money, but 350 lbs of torque has to be the target (currently 260).
m12_nathan said:
Cracking car, but rather expensive.
It is a bloody bargain given the performance. £34k, which is about what your car cost 10 years ago isn't it?
Good point. Well made.
The Four was frighteningly expensive 10-12 years ago. Probably why you don't see too many.
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