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Thread: 2.0 Zetec Turbo Westfield Project!

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    2.0 Zetec Turbo Westfield Project!

    Hi all, nice to return to the forum! I used to have an account here but lost my login details from years ago and dont have my old email address so guessed ide start a new account... Hope your all well.

    So ive decided to build a 2.0 Blacktop turbo engine to put into a Westfield.

    I am considering using a blacktop bottom end with a st170 head as from what i have heard these mate straight up? the only thing im unclear on is that the st170 has VVT and i would need to remove this? are there any tips or hints people are willing to post on this thread regarding my idea?

    I have had a couple of small things arrive for the engine, Oil pressure gauge T peice to feed the turbo and the breather blanking plate, lapping stick with paste etc, but there is plenty in the post.

    Hoping to source a block at the end of the week.

    Cheers and all the best!

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    Re: 2.0 Zetec Turbo Westfield Project!

    Doing lots of research for the last 2 days it seems people are opting for a st170 bottom end with a blacktop head? i dont understand this as the flow and inlet ports are much bigger on the st head? who not just build a full st170 forged non vvt turbo lump? need some advice really, before when i lived in wales i almost completed a 2.0 blacktop turbo engine but had to sell it as circumstances changed. Looks like im starting to see a lot more options but need the best advice. I want to build it for 400bhp but run it at 350 with boost all the way through the range from 2.5k upwards to 6.5-7k

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    2.0 Zetec Turbo Westfield Project!

    I have no knowledge on turbo zetecs at all but my guess is that the st bottom end offers a stronger package while blacktop head offers simpler cheaper advantage. Hence the combo. After all a turbo doesn't need the best head.


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    Re: 2.0 Zetec Turbo Westfield Project!

    As alladdin says, thats why that combo is used. Its sensitive to head gasket thickness though to get the compression ratio in the right area.

    At the power levels you are talking of though you wont be able to use a stock bottom end and for the power range you want you'll probably want a good quality twinscroll turbo

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    Re: 2.0 Zetec Turbo Westfield Project!

    Can anyone else chip in on this? i would be happy running 300 but want the engine to have scope for more.

    I have seen people do blacktop head on st170 bottom end and the other way around with a st170 head on a blacktop block?

    I planned to use origional crank but forged pistons and rods?

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    Re: 2.0 Zetec Turbo Westfield Project!

    Actually considering fully forging an st170 and removing the vvt and turbocharging that now

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    Re: 2.0 Zetec Turbo Westfield Project!

    Standard crank should be fine with steel rods and forged pistons.

    Any reason you want to remove the vvt? If you have an ecu capable of controlling it, I'd say keep it.

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    Re: 2.0 Zetec Turbo Westfield Project!

    Try asking this guy he is make 522 hk on a zetec.

    https://passionford.com/forum/member...boy522bhp.html

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    Re: 2.0 Zetec Turbo Westfield Project!

    Ok years ago i did a 2ltr Zetec turbo ... its was a silvertop out of a scrapyard and had covered nearly 200k ! it make 270hp & 315ft at 3500 @ 19 psi peak. it was bench dynoed by Harvey Gibbs SCS here is the spec ... This was in a mk5 red escort on steel 16' rims it was a right sleeper ... torque steer was interesting even with the LSD would sit @120 then fire right off the speedo and rest on the trip button lol.


    Stock crank and grind ( the bearings were that good you could have used them again in a N/A configuration )
    Stock rods / ARP rod bolts
    Stock Zetec head gasket.
    Stock Zetec cams & cam wheels
    Stock Zetec head and valves
    Stock Zetec headbolts
    Piper double valve springs
    Vauxhall XE turbo pistons ( bore was very good just required a hone with the correct stones to suit the ring materiel of the xe pistons)
    Zetec 1.8 alley inlet manifold
    Escort RS turbo exhaust manifold (head re-drilled to suit bolt pattern)
    Mixture of Escort cosworth and Saab turbo ... (water cooling removed)
    4 extra injector bosses welded in each inlet tract yes it was running 8 injectors sequentially ... 4 top ones running upto 10 psi then all 8
    8 ford Puma 1.6 injectors
    Saff cosworth 3 bar map sensor
    Saff cosworth intercooler
    Pectel T2 management
    Focus MK1 RS AP Clutch
    Escort RS 2000 gearbox & Quaife lsd with a Mondeo ST crown wheel (bell housing relived for pressure plate )


    Block & head chem cleaned and min decked & skimmed , CR was around 9.1 from limited memory
    Last edited by Dan Johnston; 18-05-2018 at 08:26.

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    Re: 2.0 Zetec Turbo Westfield Project!

    Thanks for all your input.

    As of this evening i now have the funds to go and buy lots and lots of goodies but i need your help.

    Do i?...:

    1. Buy a blacktop 2.0, forge the bottom end and turbo charge that?
    2. Buy a st170 engine, forge the bottom end and turbo charge that?
    3. Buy a blacktop block, fit a st170 head, forge it and turbo?
    4. Buy a st170 bottom end with a blacktop head and turbo?

    Done so much reading my head is all over the place. Just need some straight answers.

    Hope your all having a good weekend.

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    Re: 2.0 Zetec Turbo Westfield Project!

    given that its for a westfield i think chasing huge numbers is a bit pointless so i will say 4 for a "budget" sensible build.

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    Re: 2.0 Zetec Turbo Westfield Project!

    Quote Originally Posted by alladdin View Post
    given that its for a westfield i think chasing huge numbers is a bit pointless so i will say 4 for a "budget" sensible build.
    Would like to run between 300-350 bhp.

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    Re: 2.0 Zetec Turbo Westfield Project!

    get the turbo install and engine management side of things right and you can do that on a standard zetec

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    Re: 2.0 Zetec Turbo Westfield Project!

    Read somewhere on a 2.0 blacktop ide have to use the 1.8 water pump as if you do away with the powersteering etc and run a different belt setup the 2.0 pump runs the wrong way? is this correct?

    What else would i need from other engines?

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    Re: 2.0 Zetec Turbo Westfield Project!

    The advice you are quoting is for a Silvertop not a Blacktop - there is only one B.Top water pump! If you lose the PS pump you either substitute a idler wheel in its place or replace the water pump impeller with a reverse pattern one allowing it to rotate in opposite direction and giving a shorter belt run - you also need a ribbed w. pump pulley - Ike Engineering does a whole kit - bit spendy but I just got the impeller - https://www.ikengineering.co.uk/prod...-pump-impeller - and a ribbed puley from someone on here.

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    Re: 2.0 Zetec Turbo Westfield Project!

    Quote Originally Posted by katana View Post
    The advice you are quoting is for a Silvertop not a Blacktop - there is only one B.Top water pump! If you lose the PS pump you either substitute a idler wheel in its place or replace the water pump impeller with a reverse pattern one allowing it to rotate in opposite direction and giving a shorter belt run - you also need a ribbed w. pump pulley - Ike Engineering does a whole kit - bit spendy but I just got the impeller - https://www.ikengineering.co.uk/prod...-pump-impeller - and a ribbed puley from someone on here.
    Super. Thankyou for the reply, this is the exact information i need and will be ordering one of those Tuesday Morning.

    I have the blanking plate for the block breather, but ive seen people tapping into them and running them to a catch tank? This is not ideally what i want to do as want to keep that side of the block looking smooth. Where else is recommended to take a breather from?

    Are there any changes needed to the sump, oil pump, flywheel etc?

    I will be forging the pistons and rods with a standard crank.

    Cheers Katana!

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    Re: 2.0 Zetec Turbo Westfield Project!

    if you going turbo, then you want a significant amount of breather capacity, on boost you will get considerably more blow by than with n/a.
    you need do nothing with the flywheel, but a lighter one will help it spool up on boost quicker, which in a westfield, might or might not be a good thing!

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    2.0 Zetec Turbo Westfield Project!

    Can't imagine that side will look very "smooth" with a turbo hanging off it 😀


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    Re: 2.0 Zetec Turbo Westfield Project!

    Agree with Graham - a turbo NEEDS big / lots of crankcase breathing. It may look untidy but that breather under the exhaust it pretty essential so i'd keep it - even if it was run to the cam cover that would have additional breathing added.
    Hmmmm fast spool + lightswitch power delivery + ltwt. car = potential accident LOL! Seriously any turbo will be a handful to drive without giving it boost just off idle.

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    Re: 2.0 Zetec Turbo Westfield Project!

    A friend of mine is just finishing a Westfield with a Zetec turbo. As far as I know it is a stock Blacktop, just running E85 and Maxxecu management. ISTR it is mapped to around 240 whp and using a small Mitsubishi TD04-15 turbo the spool is quick (using a stock Zetec manifold with just the turbo flange welded onto it).

    It is not road legal yet so hasn't been driven too far and I can't say anything about how it will last. But it is a "brisk" car that puts a big smile on your face. Beware though, it takes some reflexes to handle!

    Gustaf

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    Re: 2.0 Zetec Turbo Westfield Project!

    Quote Originally Posted by Graham View Post
    if you going turbo, then you want a significant amount of breather capacity, on boost you will get considerably more blow by than with n/a.
    you need do nothing with the flywheel, but a lighter one will help it spool up on boost quicker, which in a westfield, might or might not be a good thing!
    Hi Graham, What if i was to tap into the blanking plate keeping it tight and neat to the side of the block, and run it to the top of a vented oil catch tank? Nothing else i can think of doing. The standard breather for that area is huge and i need to keep my mailfold/turbo tight to the area due to it going into a kit car.

    Unless i drilled and tapped the block on the intake side of the block and fitted a breather there? basically dead opposite side of the standard breather?

    Regards to the fly wheel, im unsure weather to keep the standard flywheel or skim it and reduce its weight a bit. Will it mate straight to a type 9 box? thats what i have in my head il use to transfer it to a LSD at the rear?

    Cheers.

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    Re: 2.0 Zetec Turbo Westfield Project!

    Also my Mocal Oil cooling sandwich plate has arrived but I've messed up and ordered it without the oil stat in it, so I've messed up there but don't want to send it back so will just fit an inline stat.

    Also had my Halfords Advanced set arrive which is sweet. Used to have the old set but i gave it away and bought the new advanced set

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    Re: 2.0 Zetec Turbo Westfield Project!

    You might want to rethink the type 9 box. standard only good to 180bhp.... later 2.8 turbo boxes were better as had a better layshaft bearing. BGH make t9 boxes that are stronger. that or i would look for a T5 Cossie box or hybrid mt75

    some people have put t9 on V8s but dont launch them. ��
    Last edited by r2vdh; 09-06-2018 at 08:26.

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    Re: 2.0 Zetec Turbo Westfield Project!

    Quote Originally Posted by r2vdh View Post
    You might want to rethink the type 9 box. standard only good to 180bhp.... later 2.8 turbo boxes were better as had a better layshaft bearing. BGH make t9 boxes that are stronger. that or i would look for a T5 Cossie box or hybrid mt75

    some people have put t9 on V8s but dont launch them. ��
    They are supposed to be a weak point but there are many running over 200hp - the 2.8 / V6 needle bearings can be used in a 'std' 4 banger box. I would imagine a light wt. car that is traction limited with the power available shouldn't stress a T9 excessively although the low 1st gear would be virtually surplus to requirements.................unless you plan on towing a 'house on wheels'? Are you using a solid axle or inde Sierra rear?

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