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    clubman spec duratec

    Hi

    currently building up a logbooked road rally spec escort. I need to decide what engine will be going in it.

    Have been looking at the obvious - 2.2-2.4 pinto. but a duratec seems a cheap alternative. Is it? im thinking cheap as far as being able to use a standard head(read that they flow well up to 260bhp without porting) which allows it to be a home build

    Is it possible to get a duratec with same charactaristics as a pinto? as in a torquey engine.

    was thinking something along the lines of a 2.5 block with forged pistons and rods standard head with a set of cams. decent exhaust system and a caterham inlet manifold(which seems to be used by a few road rallys boys now) any thoughts on this? good power? I dont want anything that needs 4000rpm before anything happens. which is my experiance of 16v road rally engines.

    cheers

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    Re: clubman spec duratec

    I was thinking of going down a similar route to you with a 2.5 Ranger bottom end with Woosner pistons and steel rods. I was going to fit the Fiesta ST high port head instead of the Ranger one as the ports are suppose to be too large. I have no experience of your Caterham inlet system as I was thinking on the lines of 48mm bodies.

    The Man to speak to is Paul Gardner Engines in Lanashire where I obtained my parts from. He'll be able to give you some sound advice and supply you with your requirements.

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    Re: clubman spec duratec

    I think I'm right in saying 2.5 inlet side manifolds are different fitment to a 2.0? I'm sure I've read that somewhere. so maybe a 2.0 head would have to be used for what I need anyway. Have you had 2.5 rods and pistons priced up? what do you plan with the head?

    Paul Gardner's name seems to come up very often, so will give him a shout when ready cheers!!

  4. #4

    Re: clubman spec duratec

    Quote Originally Posted by sh123 View Post
    Hi

    currently building up a logbooked road rally spec escort. I need to decide what engine will be going in it.

    Have been looking at the obvious - 2.2-2.4 pinto. but a duratec seems a cheap alternative. Is it? im thinking cheap as far as being able to use a standard head(read that they flow well up to 260bhp without porting) which allows it to be a home build

    Is it possible to get a duratec with same charactaristics as a pinto? as in a torquey engine.

    was thinking something along the lines of a 2.5 block with forged pistons and rods standard head with a set of cams. decent exhaust system and a caterham inlet manifold(which seems to be used by a few road rallys boys now) any thoughts on this? good power? I dont want anything that needs 4000rpm before anything happens. which is my experiance of 16v road rally engines.

    cheers
    I've had the pleasure of building a few Duratec's from the 2.0ltr to the short stroke 2.4, the 2.0 made 268bhp 8413rpm and 184lb Torque a good around engine but you do need to keep the revs up if you want the extra torque go for the 2.4 if you build them yourself they are a budget engine if not you will need 15,000 plus for a full turn key spec engine
    Last edited by eric; 12-04-2019 at 17:09.

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    Re: clubman spec duratec

    Quote Originally Posted by sh123 View Post
    I think I'm right in saying 2.5 inlet side manifolds are different fitment to a 2.0? I'm sure I've read that somewhere. so maybe a 2.0 head would have to be used for what I need anyway. Have you had 2.5 rods and pistons priced up? what do you plan with the head?

    Paul Gardner's name seems to come up very often, so will give him a shout when ready cheers!!
    I have already bought a base 2.5 donor engine for my project with no manifolds. I have bought forged pistons and steel rods via Mr Gardner. I have also got a high port ST head for it. Somewhere lurking about there's also a dry sump system to be used along with other various parts obtained. Whether the engine will ever get done is anyones guess at the moment as time seems to be the biggest enemy.

    I believe for what you are wanting the std high port head will be more than ample and save your money on porting and big valves.

  6. #6

    Re: clubman spec duratec

    [QUOTE=I believe for what you are wanting the std high port head will be more than ample and save your money on porting and big valves.[/QUOTE]

    I use a std valve late ported st150 head on the 2.5 block it is restrictive due to the valve size but still makes good power and especially torque.

    Are you staying with the 2.5 stroke

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    Re: clubman spec duratec

    another question I had, is dry sump needed with a 2.5 block?

    Also is it possible to use standard rod/piston of somesort? possibly to make a 2.4 instead with some machining?

    c

  8. #8

    Re: clubman spec duratec

    Quote Originally Posted by sh123 View Post
    another question I had, is dry sump needed with a 2.5 block?

    Also is it possible to use standard rod/piston of some sort? possibly to make a 2.4 instead with some machining?

    c
    A dry sump system is recommended to protect your investment especially for the track use there are good wet sumps you can use but I personally would not use them.

    The 2.4 does not need any machining it is a combination of crank rods and pistons to change the stroke, to keep the costs down keep to the std 2.5 stroke pistons etc and use the 2.0 st head as the 2.5 head ports are too large, the SBD website is worth a read.

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    Re: clubman spec duratec

    I would imagine for a Road Rally car a wet sump would be more than ample for your needs asuming you have got a decent baffled sump and pick up pipe. We did Road events for many years and never found the need for dry sumping, just more complications and expence.

    The 2.0 Duratec head has quite big valves as std so again I would stick with one of those and again save your money as there are plenty of other parts you need for your conversion. Most 2.4 Pintos only use Group 1 size valves.

    As for std rods and pistons that depends on what cams you are going to use, anything with any extra overlap will require pistons pocketing and that's going to lower your compression. What I don't know is what a 2.0 combustion chamber cc is compared to a 2.5, if it's less then you might be on to a winner.

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