fiestaturbo.com

[paradox]

Im just wondering if any one knows of a 2 litre zetec thats been increased in capacity more than just 2.1litres.

I was wondering if 3 litres could be managed with an overbore and stroker kit?

[285Andy]

cant see three litres out of that safe usable bore and stroke tbh

[paradox]

Its just an idea at the moment it would be interesting to know what the maximum safe capacity it could be taken too.

Im going naturally aspirated with my build and using throttle bodies so an increase in capacity would be a great advantage.

[285Andy]

yeah , id be interested too. for intsance, you can get 2.4 out of an old SOHC pinto engine and ive heard of a 1.9 out of a really really old 1.5 pre crossflow unit somone's got to take it out to the limit

[paradox]

hmmmmmmmmmmmm this has really got me thinking now

might be time to phone some of the better known engine builders and see what they say

[heeman10]

You want to increase the capacity by 50%?? There isn't the room diametrically for each bore or the space for the necessary throw to get the stroke you'd need. Just a "guess", but a pretty damn certain one!

[paradox]

You want to increase the capacity by 50%?? There isn't the room diametrically for each bore or the space for the necessary throw to get the stroke you'd need. Just a "guess", but a pretty damn certain one!

whats your guestimate then heman?

[heeman10]

Go get the bore/stroke dimensions, and possibly the distance between the centres of the bores (to work out wall thickness) and we'll work out the bore and stroke you'd be looking at for a square 3 litre Zetec.

[paradox]

i will do some reserch tmw and find out mate.

i was asking for what yor guess was at the maximum safe capacity for a zetec?

surley 2.5 can be managed


If done loads of reading on zetecs in the past month and everyone seems to run turbocharged zetecs so there isnt a lot of information available for us guys who want to stay naturally aspirated.

It would be so nice to have a good torque curve from low down rpm and nice bhp to match without having to rev the engine to 7000+rpm to make the power.

Sorry if im babbling a bit its been a long day and i should have been in bed a long time ago

[heeman10]

freak power's done quite a bit with a few N/A Zetecs. Paul Dunnell in Suffolk builds some very good Zetecs, such as my dad's. A 2.0 making 230bhp with torque from 2,000rpm, up to 8,200rpm. Granted, larger capacities make torque easier, but you can still get it from the smaller lumps

[heeman10]

freak power's done quite a bit with a few N/A Zetecs. Paul Dunnell in Suffolk builds some very good Zetecs, such as my dad's. A 2.0 making 230bhp with torque from 2,000rpm, up to 8,200rpm. Granted, larger capacities make torque easier, but you can still get it from the smaller lumps

[paradox]

any chance of the spec list of your dads engine mate?

[heeman10]

Don't have it I'm afraid, it's back home. It's a 2 litre on Cossie greens, TB's and aftermarket management, not that I can even remember what management it is!

[BUTRE]

Can´t find the std zetec 2lts boreXstroke

For more lower torque you want more stroke BUT it will not rev so high because of high piston speed (piston speed and not RPM at crank).

Small stroke can make it rev like mad.

For a 2lts the best way is 86x86 and you'll have the best of both worlds. Ok, Honda phigured that out and the CTR is 86x86

The FRST is 80x79.5 and thats way it revs better than the 1.9+ CVH (83x88).

The engines block has a limit to how much you can bore it out. So you got to go longer strock (longer crank throw, etc) but theres also mechanical limits.

The zetec 2lts should be something near 85x88=1997cc (I'm wild guessing).

Knowing that it can be overbored to fit 86.5mm pistons: 86.5x88=2068cc

To get 2500cc will need 86.5x106.. and 106 of stroke is something of a miracle on a zetec

You need a set of more two cylinders!

[paradox]

Can´t find the std zetec 2lts boreXstroke

For more lower torque you want more stroke BUT it will not rev so high because of high piston speed (piston speed and not RPM at crank).

Small stroke can make it rev like mad.

For a 2lts the best way is 86x86 and you'll have the best of both worlds. Ok, Honda phigured that out and the CTR is 86x86

The FRST is 80x79.5 and thats way it revs better than the 1.9+ CVH (83x88).

The engines block has a limit to how much you can bore it out. So you got to go longer strock (longer crank throw, etc) but theres also mechanical limits.

The zetec 2lts should be something near 85x88=1997cc (I'm wild guessing).

Knowing that it can be overbored to fit 86.5mm pistons: 86.5x88=2068cc

To get 2500cc will need 86.5x106.. and 106 of stroke is something of a miracle on a zetec

You need a set of more two cylinders!

Thank you for the info

[Pez]

I should think you would be able to go up to something like 2.3/2.4 at a push. There is less to play with on modern engines as tolerances are a lot tighter, but with investment in the right areas it could be done. Im almost certain ive seen a 2.2 Zetec turbo kicking about on the net somewhere. The trouble is, you're looking at mega expense with custom designed and made cranks, rods and pistons etc.

[edders]

yeah , id be interested too. for intsance, you can get 2.4 out of an old SOHC pinto engine and ive heard of a 1.9 out of a really really old 1.5 pre crossflow unit somone's got to take it out to the limit

and ive also heard of the old v6s(cologne) to be taken from the standard 2.8 or 2.3(as the blocks are the same its just the 2.8 is more bored but the engines are the same) but a company takes them up to about 3.9 litres AND turbocharges them

they make some fudgekin power

think it was about 450 at 8 psi

[Pez]

3.7 is about the maximum you can safely get out of the Cologne V6, along with superchargers and twin turbo chargers. Awesome pieces of kit. This can also be done to the 2.9 V6 Cosworth engine as well

[xrstu]

the cost of taking a zetec past 2.1 would be silly.

the best bet would be to supercharge it.

[Growler]

have a look here


http://www.fordmondeo.org

I am a member on there as I used to own a mondy

If no one tehre has done it am sure there will be people who know

if not what about dropping a 2.5 V6 instead from the mondy

Not sure if it would fit in a Fiesta but yu would love the noise and teh low down grunt

[turboboss]

2.4l using the cgi block

[freak power]

2.4l using the cgi block

I was just going to say that or use a 2.0 and fit liners

I've looked into this myself and your best with the standard stroke as a increase in this puts more force on the side of the pistons also it make it less revvy, the biggest you can get with just a bore out with liners or CGI is a 88mm bore (a little bit bigger with the CGI) with the standard stroke of 88mm making it sqaure giving 2140cc most people would call that a 2.2 but a 2.3 and 2.4 can be done but a custom crank, rods and piston will be needed.
The problem with a bigger bore is the head will need more port work and a wild cams will become tame with the increase in cc.
To make it rev more i've looked into a shorter stroke of 80mm and a 88mm bore that will give you 1946cc with peak power at about 9k to 10krpms.

[freak power]

Have a look at my engine its a 2070cc 86.5mm bore

http://www.fiestaturbo.com/forums/viewtopic.php?t=97695