Chip

iTrader: (3)

What are people doing to tune the duratec lumps at the moment?

Are turbo conversions popular?

What about N/A tuning, are cheap steel rods available?

What about cams?

Do they respond well to headwork?

Is the standard inlet restrictive?

Spiky

iTrader: (1)

some people with elise run duratec's with about 220bhp NA form

is that any good?

Chip

iTrader: (3)

Yes mate, thats interesting, although would be even more so if someone could detail what they change to get to that level?

Andy_R

iTrader: (3)

Dunnell Duratec N/A Guide

Chip

iTrader: (3)

Andy_R, you sir, are a legend

Thats a great bit of info.


Any more anyone?

Chip

iTrader: (3)

PS

Based on that, it looks like the ONLY change for 200bhp is TBs?
And the only extra change for 225 is the cams?

(the other items are more related to making it track reliable like a better clutch and dry sump)

Andy_R

iTrader: (3)

pricey, but their builds are excellent.

Other links that are still live from when I lasted looked at Duratec :-
rods

rods

forum

cnc heads

Disabled Account

Chip, AFAIK the "ultimate" Duratec engines were those fitted to Noble's.

Dont know if the Noble forums will have detailed info on the spec of these engines.

It's Czech Mate

Are they not the v6 duratecs? I'm sure Chip is on about the I4 Duratec
( not to be confused with previous I4 DOCH as used in RS2000 )

matt p

You have pm chip

Chip

iTrader: (3)

Andy, Thanks

Matt, got it, thanks.

Doug, yes sorry I meant the I4, should have been more specific!

Disabled Account

Good point, but if you look at the prices of early V6 Mondeo's compared to the prices of say 2 litre Zetec models of the same period, the V6 models are often cheaper........think peeps are scared off by fuel running costs of the V6.

Chip

iTrader: (3)

In this instance, the reason im interested in the I4, is my mate is looking at making a subframe to put them into the old mini, and wants to know the tuning options.

ian sibbert

Chip,

Not looked too much at the Duratec yet, but the claims seem to centre around minimal work to acheive large gains.

Steel cranks and rods are available but they are still architecturly quite a square engine, unlike a revvy N/A YB, the 87.5mm bore seems very small, i'd like to see if the tuners, SBD Dunnel etc are boring and re-linering the race engines to make them rev better and what the safe maximum is.....

People are using the longer stroked versions to create a 2.3l (ranger) but I personally dont think this is really the best option......

SBD claim 304 Bhp/195lbft torque at the flywheel, they talk about changing the internals (crank, rods, etc) but not about whether they change the architecture, rod ratio etc.....

Paul Gardner and a couple of others are playing with them now and I know they have yet to see the big figures being quoted, we have plans to fit one in a Mk2 probably wont happen till next year now though......

http://www.sbdev.co.uk/Main.htm

Ian

Chip

iTrader: (3)

Interesting stuff Ian

Chip

iTrader: (3)

Some good info here too my mate found, for others interested on the same subject, from the fast ford article:

http://www.sbdev.co.uk/History_files...atecTuning.htm

matt p

Bugger forgot to say,

You can now buy off the shelf supercharger kits from Jamsport, they come in 3 stages but are an excellent bolt on kit.

steve7786

iTrader: (2)

Ian Howell @ area 6 has done a fair bit of research with regards to turbocharging.

OldDan

Shawspeed have been doing them for years in Kit Cars.

http://www.shawspeed.com/fdura.htm

OldDan

A friend of mine has also got a 2.0N/A on standard inlet plenum, running cams, dreamscience, headwork, air filter and full exhaust pushing just over 200bhp and 160lbs/ft


I remember Jon @ SS telling me about when they strapped a set of carbs onto an untouched duratec from a scappy mondeo which gave close to 200bhp if not over! (not sure if this was with cams too or not)

Neil@FastFord

Seen good results first hand from turbo charging. Drove well too!

Performance 3000 have developed a kit that a home mechanic can fit easy enough

Powerworks superchargers can be made to work on them also.

Markb_s1

there is apparently a question mark over the crank strength at high revs according to some people. both maountune and cosworth are manufacturing complete engines and add on parts i believe.

as far as the turbo versions go, i've heard good things about them from the US, but i've never seen any proper evidence to back it up.
I know a few people putting them into their old escorts, including one guy who is binning his excellent and proven N/A yb for the duratec..

looky here:

http://www.turbosport.co.uk/forumdisplay.php?f=164

http://www.turbosport.co.uk/showthread.php?t=122375

http://www.turbosport.co.uk/showthread.php?t=125031

also might find some info here:
http://www.duratecperformance.co.uk/...s.php?ubb=cfrm

Jamie Going

Chip,

We have done alot of work on the duratec now, starting with the 2ltr, we have achieved 232bhp from this using a single throttle body and standard fiesta st engine management remapped:



this is in our demo fiesta st, now running aftermarket management (Gotech MFI PRO X) in preperation for bigger things

another 2ltr with 250bhp on a standard bottom end and head, with the addition of a supercharger, again on standard engine management remapped:



moving on we have the 2.3, we have 280bhp NA using throttle bodies, gotech, rods and pistons:




Then the most powerful we have done todate (not for long) is this 2.5 conversion we carry out:



this was running 330bhp and 230lb ft, however this is now being supercharged, we'll let you know what a 400bhp+ fiesta st feels like soon!

if you need any info feel free to ask

darren.cudd

omex have just started doing supercharger kits also as they have just become rotrex dealers.

according to the guy i spoke to on there stand at autosport this installation is primarily deigned for rwd type cars such as kitcars and mk2 escorts ect.
they are selling both the kits or complete turn key engines ready mapped and hot run supplied with loom and ecu ready to drop in and go think you get a warrenty with the turn key engines as well (which i suppose you would expect )

think they said this one i have the pic for was the low boost version at 270bhp, but there is a high boost version coming. he wouldn't say what kind of power though

but check out the ally bracketry mmmmmmmm

just a couple pics i took with my phone at the show





a couple of close up shots of the main bracket i found on the clio forum a couple weeks ago




now all i have to do is start saving my pocket money

m_stavros

For all of us who own the 2.0 Duratec on the ford focus 2005+ chassis we cant use jamsport supercharger because the air condition is located exactly where they fit the S/C. So the NA way is the only way for now.

bud-weis

Easy, Air conditioning>Bin!!

broddler

If you are looking for head upgrades there are to types of head for the duratec. One is a low port head the other is a high port head, the high port head is a much better flowing head as standard so just making sure you have a high port head to start off with helps with tuning.
We have had Dyno figures on engines that have heads we have worked that have gone over 300 bhp n/a from different engine builders so the power is there you just need to extract it.

m_stavros

I choose the NA way and now i got 170bhp and 197Nm.
I am in the midle of a project for a new inlet manifold

pani_k

iTrader: (1)

what size engine is that mate?

and does it run VVT?

Jamie@FastFord

Julian Godfrey Engineering are working on a turbo Duratec at the moment for the rallycross boys (got to find a replacement for the good old YB somewhere)

They're not finished the development stages yet but say they need to be getting in excess of 630lb/ft of torque to make it a viable replacement for the YB

On the N/A side of things, Joe Stevens at Bluesprint is knocking out 300 bhp atmo powered Duratecs.

Not sure on the prices for either though, but as they say 'you get what you pay for'

VileAde

im after a ford based 4pot engine tha'll produce 250+ bhp with or without a supercharger. and thats fairly cheap (that i can get from a salvage/breaking vehicle) focus/mondeo?

was looking at a ST170 engine but would prefer more bhp.

Any ideas?

Markb_s1

2.5 duratec. will still need work but can see that power easily in NA form.

VileAde

But aint the 2.5 a 5 cylinder? in can only fit a 4 cylinder

FasterFords

there are 4 inlets on that engine so I guess its only a 4 pot and a 2.0 converted to 2.5

m_stavros

Its the 2.0 duratec HE. There is no vvt or vct on 2.0 focus.

Blackcatn2o

Ok sorry for bringing this thread back from the grave but i want to know who over there in euro makes the rotex supercharger do they have a web site? because people here in America are a little slow an stupid to figure out how to make one. our duratec has been out for over 4 1/2 years an im tired of waiting.

tabetha

There are shed loads in kit cars I see hitting around 275/285 bhp from 2.0L, with just over 200lbft, they seem pretty happy at 9000 rpm plus as well, all on throttle bodies.
They have just done some back to back testing on different size tb's as well.
Dave College at Retroford has a escort estate with tb's around 280bhp from 2.0L, with over 200lbft, VERY fast car it is too.
tabetha

Garage19

Paul Dunnel is working on turbo versions at the mo. Has had proplems with his carbon plenums blowing apart. I only know his as apparently he has been eyeing up my cossie plenums.

dojj

iTrader: (3)

is there anything that can be done to the bog standard lump without the need to get new cranks and rods etc?

forced induction or not?

i was looking at these tb's fromburton which seem to be good value until you discover they are just the tb's and you need to buy everything else to go with them to make them fit

i might be giving them a bell later on today to find otu exactly what's what

alan12112

Dojj you can turbo or supercharge your 2.0/2.3 duratec on a standard lump

Turbo's see about 260bhp 220ib/ft straight off the bat

I've got cosworth cams now and mine is 260bhp 260ib/ft @10psi after it's latest re-map