Quantum 2+2

Hi all,

I've got a Quantum 2+2, so essentially an XR2, at the moment with a 1.6 CVH and BC. I've been doing a lot of research trying to find this out so please if you say use search please include a link or two.

Basically I want to put a iB5 in, and do a puma shifter convert, but you know how it goes, when the bonnet is open...

So here is the question, should I go for a 2.0 zetec, or try and make a ZVH (price wise), either way I'm looking to go the turbo route as well. And with the iB5, what car do I want it from for acceleration over top speed, and were any fitted with LSD except some racing puma's? Finally do I want front or rear starter, I figured as I'm swapping both I could go either route as long as they match? But again what comes from what car?

So in summary, cheapest way to a 2.0 turbo with ib5? And where from? Thanks

Turbo Zetec

iTrader: (1)

From personal experience, don't bother with a zvh. I've had a few, but when i look back, i could have had a much better zetec for the money!

dean richardson

Your best option is full zetec turbo you can get plates for the exhaust / turbo manifold and you can also get plates for the inlet .. Your best option is to use a rover turbo inlet .. And you can also use a compression head gasket if you are going down the cheap rute with out putting pistons and rods in it . I did a zvh and you need holes in the block blocking up you need to tap and die holes in the side of the block for your water pump and things .. But either conversion is easy enough

chalkey

if your going to do it go zetec with rear starter, biggest problem is the heat from the turbo and exhausts cooking the starter soleniods, i converted my old mk5 escort to rear starter zetec, simple to convert wiring wise

Rob_DOHC

iTrader: (4)

As above, zetec all the way.

You can redrill the head and use an RS turbo exhaust manifold, so any t3 will pretty much bolt on.

Any IB5 will go on afaik with the zetec, but you should consider the different gearing options available. The LSD from an rs turbo will also go straight in.

You need to change engine mouts, there is a good website showing how to do this, the author also has a quantum. Do a google for quantum ZVH and you will find it.

Rob,

Rob_DOHC

iTrader: (4)

PS, if you are looking for low power i would just use a zetec HO inlet manifold, standard compression ratio should be fine for 7 or so psi too.

The ST170 engine is the best basis to start from, using standard internals and a black top head these are supposed to cope with 300 bhp pretty well.

Rob,

Quantum 2+2

Thanks for the info guys I'll do the zetec then From what I can work out the best way of doing things would be an escort 1.6 HATCHBACK box, as this has 3.58, 1.93, 1.28, 0.95, 0.76, 3.62 ratios (more acceleration) and a rear starter, and maybe fit a 1.7 puma final drive (3.82), then do the hydraulic clutch conversion by Karlos G. Any problems with this? The turbo itself has been covered a few times, so I should be ok with all that, plus the purpose made gaskets, adaptors etc.


Thanks for this, didn't realise that the 'duratec' was basically just a strengthened zetec, but surely keeping the matching head would make more sense and using an ecu that can map/disable the VVT? Unless I've missed something obvious? And yes, Jim Hearn is a life saver on many occasions

dean richardson

Might be hard now but if you can get hold of a 1994/95 zetec motor they have thicker pistons in them so you can get them machined down to make it low compression .

Quantum 2+2

Probs easier to stick with duratec ones and a decomp plate, they are forged so easily strong enough

dean richardson

Yeh your maybe right .. Also I have heard you might want to upgrade your oil pump as they can pack up under load when your on boost and starv every thing of oil .. You might want to look into it a bit more .. I no when I did. My zvh it happened on that couldn't keep the oil going and starved the bottom end and the turbo .

kateean2

Your best option is full zetec turbo you can get plates for the exhaust / turbo manifold and you can also get plates for the inlet

Dennis_Wiseman

iTrader: (1)

As said full Zetec Turbo for sure.

I would just stick a 1.8 diesel Escort van box in for acceleration and use a short stubby transit Connect starter. Trying to get hold of a LSD from a Puma is a nightmare so you could go S2 RS Turbo diff instead. I think you need to shave 1mm off the diameter tho.

Wouldn't bother with fancy inlets. Standard Mondeo 2 litre one is the same as the RS Focus and would be more than up to the job for a 300 bhp build.

Rob_DOHC

iTrader: (4)

I've had the diesel box in mine for a while now and hate it, it sits at 4000 rpm at 70-80 and its just horrible. Always changing gears like a nutter which actually slows you down a lot, plus first and second are useless. I would get as close to origional S2 RST ratios as possible.

Rob,


Yes you can, the 'duratec' is literally a zetec with a different badge on it, the rods are slightly longer amongst other things, the pistons are not forged but pressure cast, so a lot tougher than std zetec pistons, but not quite forged tough.

I have heard of head failures though.... although nothing first hand, so you might want to look into that, although it flows better than the black top head. The only reason people don't use them afaik comes down to the VVC, its not the standard on/off type rather a constantly varying item, although if i were building an engine I would keep it, just find something to control it properly.

Have a word with Karlos_G as he has been through this for his own car.... I think he even has a thread about it.

Rob,

Quantum 2+2

Ok I'll look into the oil pump, and what to possibly swap in for it. And I think I've seen his, or a thread anyway where a few after market ecu's are listed that are confirmed as being able to use the vvt, as well as a few cheaper ones that can disable it, so I reckon I might as well go for one of those as it does seem to be worth having in the long run or until the head fails and I sell it for a huge loss and spend an arm and leg on a flowed blacktop one haha.

Not sure I'll be able to front up for an LSD straight away, but it is something I want to have as soon as I can, does anyone know what bhp region the standard iB5 will take before LSD is a requirement? Thx

Dennis_Wiseman

iTrader: (1)

Yeah agree Rob but just with him saying he was after acceleration rather than top end guess a short geared box like the diesel van would suit his needs

Rob_DOHC

iTrader: (4)

True, good point mate.

Ib5's are pretty capable, people have had them fail at 200bhp driven hard, but others are running fairly big power with them. Either way, torque will play a larger roll in their eventual failure, and zetec turbo's make a good amount of torque. The boxes are supposed to be much weaker with an open diff fitted, but your need for an LSD is probably governed by your traction (or lack of ).

Rob