Different types of Duratec engine?

[AntC5E]

Hi Peeps,


What are the different types of Duratec engine?

I'm looking to build a new grass track car with a Duratec engine and Jenvey throttle bodies. I'd like a newish engine about 2000 - onward?? Ideally around 50K on the clock, probably from a breakers...

I'm looking for a fairly simple engine. Is the I4 the VVT Mazda one?






Thanks,
Ant.


Newbie so please excuse my dumb-arse questions !

[RWD_COS]

Hi

The Duratec is a Ford Engine Brand name, like the Zetec was for the 1990's.

The full engine name you want is the Duratec HE. The oldest ones are found in 1998 model year onwards Mondeo's in 1.8 and 2.0L. But the best one to to go for is the 2.0L out of the CMax / ST150 Fiesta / Mk2 Focus and Mondeo from 2004 onwards. As these cars have the new high flow cylinder head fitted to them which is good for another 10 bhp (Gross) when fitted with throttle bodies and tuned exhaust manifold.

The Mazda VVT engine is not a Duratec but another engine family called the "Mazda BZ" engine. The only Duratec VVT engine currenty in a vehicle in the new MX5.

[Bob2]

The new mazda 6 and mazda 5 also have 2.0l VVT duratecs and the one to go for is the 2.3 out of the mazda 6 sport ;-)

Patrick

[AntC5E]

Hiya,

Ahh, thanks very much... I don't really want to get into VVT so that suits me fine!

I've heard of the HE... Is that the same as the I4??

I've been looking at a kit and it said for I4: http://www.omextechnology.co.uk/Thro.../TBEM/TBEM.htm


Thanks,
ANt.

[RWD_COS]

The Mazda I4 is the "In House" development name for the Duratec HE engine that we use in the design and development of this engine in Ford. As Mazda are lead design and development team for Duratec HE engine, new technology is introduced on Mazda products first. VVT engines in Ford baged products will start to introduced later this year.

[AntC5E]

Ahh, so the I4 isn't VVT??


Ta,
Ant.

[mk1matt]

I told you they would be able to answer all ya questions didn't i
Clever sods
(matt, rainham)

[AntC5E]

Hey dude,

I was wondering if you'd have a look !

Yeah, everyone has been very helpful...


I'm gonna have a look round for other aftermarket steel cranks and see about gearbox ratios if I can't afford to get the revs up...


L8rs,
ANt.

[RWD_COS]

Ant

My colleague at work runs a 2.0 litre Duratec in Rally Cross Car; it has a lightened and balanced production crankshaft that reaches peak power at 8750 rpm and the rev limiter at 9000rpm. This engine was developed and built by Mountune, it has steel H section conrods, uprated bearings and ARP bolts in the bigend and main caps and light weight forged pistons.
What I am saying is the standard 2.0 litre Duratec bottom end is very strong and you do not need a steel crank. The weakness of the Duratec at high revs is is the cam chain Ford only rate for about 8000 rpm, if the engine is held at high revs above 8000 rpm, the chain well stretch and eventually snap.
If you go to a 2.3 Duratec and rev above 7500 rpm, you will need a steel crank, these are available from Cosworth.

[AntC5E]

Hi RWD,

Just the info I'm after!

I'm 'only' aiming for 180-200 BHP... 8000 revs would be great... I'm hoping to build a new Autograss car: I'll basically stick it in 2nd and hold it at the highest revs I can get that won't kill it !


Glad you mentioned the conrods, cos I saw a page that said they were steel already!

I saw an article about balancing and how you can get a lot more revs without going steel... We like this, much pennies saved!!


When you say lightened, you mean the crank lightened?? I've never heard of that... Flywheels, but not cranks! By how much??


Do you have a contact for Mountune, or URL?
I'll probably strip it down and rebuild it myself... And get an engineering company to do the lightening/balancing....

How has your friend dealt with the chain issue then?? Is there a solution?

Any ideas how much each 'bit' cost?? the cons, pistons, balance, and lightening... I'm thinking I could do it in stages then to spread the cost... I guess I'd have to do all the internal stuff in one hit...but maybe get the crank balanced but leave the lightening and then get a lightened flywheel at a later date... Also, I have to say I'd prefer leave as much on the crank as possible!


Thanks very much !! You've been really helpful pray:

I have a feeling this car is gonna cost some by the time I get the Omex TB kit!


Thanks,
Ant.

[RWD_COS]

Ant

For 180 to 200 bhp, you can use a standard 2.0l Duratec fitted with throttle bodies, a tuned exhaust manifold and a remapped ECU.

For different Duratec power spec's go to

www.raceline.co.uk
www.cosworth.com
www.mountuneonline.com

Mountune are developing a timing chain solution with Ford as the Duratec in now the WRC engine. As for my friend he is replacing the timing chain at regular intervals.

As for costs, Pistons £500, Conrods £1000, light weight flywheel £175 all plus VAT. All good engine machining / builders can dynamically balance a bottom end. I had my 2.3 crank, flywheel, clutch, front pulley and conrods ligthened and dynamically balanced for £100.

One thing I do reconmend be done to all Duratec engines, is to have the front pulley, timing cog and crankshaft keywayed. Ford standard engines only use friction washers and a bolt done up very tight to hold the timing cog and front pulley in postion. It has been known to spin the timing cog at high engine revs and wreak the engine when the timing slips.

[AntC5E]

Hiya,

That's what I intend to do... I'm just looking at twin Jenvey parallel bodies, I don't need taper fit singles... SBD motorsport do a kit... Should give me aound 195BHP...

Cos I'm racing in 2nd gear I just want as many revs as I can get for a sensible amount of money...

£100 is very cheap for balancing all that.. That's very good... I guess that didn't include the strip-down/rebuild...??

Yeah, I had read about the friction pulley in the Burton Power magazine (temptingly left on the table at work by Matt! ). I think a keyway would be a good way to go!

I think I'll just go for the balanced (lightened, maybe?)crank, steel pistons and rods....

Should be a nice unit... I'll just have to keep to sesnsible revs till I win the lottery!

Thanks again for all your help!


Ant.

[Jules]

Keyways is this a new word for woodruff key

[RWD_COS]

Woodruff key is a brand name, like Gudgeon Pin.

In Ford speak... Keyway and Piston Pin even Wrist Pin.

[jerryrwd]

Add Scholar Engines to the list of Duratec engine builders. They have supplied me with a 2.5 Duratec, 290 bhp, 225lb/ft torque, complete with everything including clutch, starter motor, egine management, fully mapped for £8500. Cheaper and better, I hope, than anything Raceline and the others, as far as I know, can supply.

[AntC5E]

Good grief! My whole car will be less than your engine! I'm hoping to get away with £5K!! LOL

[mk1esc]

which is the better option in engine choice to use for a fast road car/van

[rs1600]

What about the ranger 2,3L duratec ns engine it is mounted front/right in the picup.

[Fatgadget]

http://www.duratecperformance.co.uk/...Board=durachat

[mangymolerus]

whats the difference with the 2.3l granada duratec to the others and are the granada engines anygood.
.....dave

[Stylussprinter]

Yes but is it a V6 or a stroked/pistoned 2.3 . Sounds cheap if it's the 2.3.

Rob. (wish list --- 2.3lt or higher spec' 2lt from Dunnell)