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Isn't that the 1.5 naturally aspirated dragon engine?

Yes the diagram is the naturally aspirated one (wet timing belt on that one) I posted that just to show the set up clearer than the haynes auto fix diagram.. If you look at the youtube link i posted above showing the turbo dragon fiesta st engine it shows the same set up gear driven off the balance shaft..The haynes autofix screenshot i posted shows the same aswell...I confirmed with a guy i know works in ford parts department at my local main dealer but as i said above mines derivative 2 my sons is 12 so newer ones maybe wet oil pump belt I doubt it myself but if anyone has any doubts they should just ask their parts/service dept at their dealers..
 
The ST has a timing chain and the oil pump is driven by the balance shaft via a gear off the crank there are no wet belts...
That is not True. There are 3 different ST 1.5 Dragon engine with different designs of oil Pump location, different Timing chain Cover, different oil pan and so on.
But Oil Pump is driven by 2 versions by a little Belt in oil!!!
Only 1 Version has gear driven oil pump
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Read the Ford Workshop Manual online Version in PTS for Fiesta 2017> 1.5 Dragon engine. Ford mechanic can do it!!
 
My ST3 was first registered on 24/4/2019. How can I tell if my engine has a belt-in-oil or gear driven oil pump?
Anyone known the VIN or engine number when they changed to BIO drive for the oil pump?
 
My ST3 was first registered on 24/4/2019. How can I tell if my engine has a belt-in-oil or gear driven oil pump?
Anyone known the VIN or engine number when they changed to BIO drive for the oil pump?
You must know the build Date of your car. And look for the outer appearance of your engine/of the front timing chain cover . The registration date is unimportant if you look for technical information.
 
This is so confusing. My engine is a Derivative 1 and the engine was built on 16/5/2019. It has 6.1 Litres of oil and the dipstick is 48.5cm long, but according to Mountune mine has a blow off valve as well, so it seems like mine is a Frankenstein car with some earlier bits and later bits. All i want to know is do i have a timing belt or timing chain 😄
 
This is so confusing. My engine is a Derivative 1 and the engine was built on 16/5/2019. It has 6.1 Litres of oil and the dipstick is 48.5cm long, but according to Mountune mine has a blow off valve as well, so it seems like mine is a Frankenstein car with some earlier bits and later bits. All i want to know is do i have a timing belt or timing chain 😄
Let's start at the beginning. 😅
Every 1.5 litre 3 cylinder engine has a timing chain for Crankshaft to the 2 camshafts. The interesting question is if the engine got a little oil pump belt or gear driven oil pump. Only few engines have the older construction with balancer shaft in Oil sump and Oil pump gear driven.
The majority of the engines have the newer construction with upper balance shaft, and belt driven oil pump.
 
Let's start at the beginning. 😅
Every 1.5 litre 3 cylinder engine has a timing chain for Crankshaft to the 2 camshafts. The interesting question is if the engine got a little oil pump belt or gear driven oil pump. Only few engines have the older construction with balancer shaft in Oil sump and Oil pump gear driven.
The majority of the engines have the newer construction with upper balance shaft, and belt driven oil pump.
Thanks for clearing that up! I was still surprised to find out mine has the blow off (diverter) valve. This photo might help people.
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Just to continue the oil pump belt discussion, I stumbled across the following when I was browsing the service schedule for the ST -

  • Oil Pump Belt -- Every 150 000 miles/10 years - Renew (LTS 21 716 5) Vehicles built from 02/25/2019 only
So it appears there is actually a replacement interval specified for this belt. And I have to say it looks like a pig of a job.
The belt is driven by the crankshaft, so there's quite a few steps to being able to get it off -
Starting at the bottom, -
1) Remove the undertray
2) Remove the sump
3) There's a cover over the oil pump drive - take this off then you can slide the belt off the toothed pulley on the oil pump
Then we're on the front of the engine -
1) Remove the auxiliary belt and then the crankshaft pulley
2) Remove the timing chain cover
3) Take the timing chain off so you can get the timing pulley off the crank
4) Remove the balancer shaft drive pulley
- that gives you access to the oil pump drive pulley, so you can get the belt off.

Reassembly is the reverse 🤣 - including setting the cam timing etc.
There's lots of single use parts to bin (plus seals and gaskets), and after 150 k miles or ten years, you might as well think about other bits to replace.

That lot is going to cost a few quid unless you do it yourself. I wonder how much Ford would charge and how many people won't bother.
@Jorg - do you know how many hours the Ford system suggests for this job?

Cheers,
MarkP
 
Just to continue the oil pump belt discussion, I stumbled across the following when I was browsing the service schedule for the ST -

  • Oil Pump Belt -- Every 150 000 miles/10 years - Renew (LTS 21 716 5) Vehicles built from 02/25/2019 only
So it appears there is actually a replacement interval specified for this belt. And I have to say it looks like a pig of a job.
The belt is driven by the crankshaft, so there's quite a few steps to being able to get it off -
Starting at the bottom, -
1) Remove the undertray
2) Remove the sump
3) There's a cover over the oil pump drive - take this off then you can slide the belt off the toothed pulley on the oil pump
Then we're on the front of the engine -
1) Remove the auxiliary belt and then the crankshaft pulley
2) Remove the timing chain cover
3) Take the timing chain off so you can get the timing pulley off the crank
4) Remove the balancer shaft drive pulley
- that gives you access to the oil pump drive pulley, so you can get the belt off.

Reassembly is the reverse 🤣 - including setting the cam timing etc.
There's lots of single use parts to bin (plus seals and gaskets), and after 150 k miles or ten years, you might as well think about other bits to replace.

That lot is going to cost a few quid unless you do it yourself. I wonder how much Ford would charge and how many people won't bother.
@Jorg - do you know how many hours the Ford system suggests for this job?

Cheers,
MarkP
Might as well replace timing chain while you're there
 
Just to continue the oil pump belt discussion, I stumbled across the following when I was browsing the service schedule for the ST -

  • Oil Pump Belt -- Every 150 000 miles/10 years - Renew (LTS 21 716 5) Vehicles built from 02/25/2019 only
So it appears there is actually a replacement interval specified for this belt. And I have to say it looks like a pig of a job.
The belt is driven by the crankshaft, so there's quite a few steps to being able to get it off -
Starting at the bottom, -
1) Remove the undertray
2) Remove the sump
3) There's a cover over the oil pump drive - take this off then you can slide the belt off the toothed pulley on the oil pump
Then we're on the front of the engine -
1) Remove the auxiliary belt and then the crankshaft pulley
2) Remove the timing chain cover
3) Take the timing chain off so you can get the timing pulley off the crank
4) Remove the balancer shaft drive pulley
- that gives you access to the oil pump drive pulley, so you can get the belt off.

Reassembly is the reverse 🤣 - including setting the cam timing etc.
There's lots of single use parts to bin (plus seals and gaskets), and after 150 k miles or ten years, you might as well think about other bits to replace.

That lot is going to cost a few quid unless you do it yourself. I wonder how much Ford would charge and how many people won't bother.
@Jorg - do you know how many hours the Ford system suggests for this job?

Cheers,
MarkP
5.4 Hours = 5 Hours and 24 Minutes for renew the wet belt for engine oil pump at 1.5 litre Ecoboost Dragon I3
4.7 Hours if car is already in workshop for regular maintenance work( inspection/Engine Oil Change)
 
Late to the party on this thread, but Ford themselves may have caused confusion here. When the Mk 8 ST was launched, I downloaded the technical specs from media.ford.com (2018FordFiesta_ST_TechSpecs_EU.pdf).

This said: "Camshaft drive: Low friction belt in oil with dynamic tensioner"

I have just downloaded what seems to be the current version (FordFiestaST2021_TechSpecs_EU.pdf)

This now says: "Camshaft drive: chain driven with hydraulic tensioner"
 
We talk about the 1.5 litre Ecoboost I3 Dragon Engine. It has Definitivly a Camshaft/Crankshaft Chain.
But: the Engine Oil Pump Drive is separately!!!
Driven by a little wet belt. Please read all of the comments in this thread, and look at all of the pictures!!!
 
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