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Plus 4 Ecoboost report - part 2 #545011
27/11/18 04:18 PM
27/11/18 04:18 PM
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Joined: Jul 2014
Posts: 473
Cornwall
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Plus 4 Ecoboost report - part 2

Ecoboost engine fitted with its loom last week and, this morning, popped into the car. Went in like a well greased oyster. Fits in engine bay very well with loads of clearance between the turbo and the side of the engine bay/steering column. fabricating the turbo exhaust manifold will be a challenge. Onwards and upwards.
27 Comments
Re: Plus 4 Ecoboost report - part 2 [Re: griffo] #545168
28/11/18 09:52 AM
28/11/18 09:52 AM
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Staffordshire
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Staffordshire
That alternator looks like a close fit.

Did you know it would fit when you started or was it one of those try it and see moments?


Bob

1999 4/4 1.8 Zetec
Re: Plus 4 Ecoboost report - part 2 [Re: griffo] #545197
28/11/18 11:15 AM
28/11/18 11:15 AM
Joined: Feb 2016
Posts: 1,931
East Harling, Norfolk UK
Richard Wood Online NoMood
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Great work, a lot less busy than Roadster 3.7 V6 installation thumbs

The alternator there is also a close fit as well as can be seen through nearside inner wheel arch cutout to accomodate LHD steering shaft.


Richard

2018 Roadster - Red/Magnolia - "Morton"
1967 Land Rover series 2a SWB
1960 Velocette Venom
Re: Plus 4 Ecoboost report - part 2 [Re: griffo] #545200
28/11/18 11:16 AM
28/11/18 11:16 AM
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Cornwall
griffo Offline OP
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Borrowed the wife's tape measure. You're right, the alternator is a bit tight but then it is in the standard Plus 4 GDI too.
cheers

Re: Plus 4 Ecoboost report - part 2 [Re: griffo] #545302
28/11/18 07:49 PM
28/11/18 07:49 PM
Joined: Aug 2014
Posts: 89
Germany
Sir John Offline
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Germany
So apart from the 250bhp, whats the advantage over the 156bhp GDI unit.?
(the GDI unit's bhp can be improved by 30 with a engine management software upgrade)
Is the ECO sport Euro 6 compliant, whereas the GDI has Euro 4/5?

Re: Plus 4 Ecoboost report - part 2 [Re: griffo] #545304
28/11/18 07:59 PM
28/11/18 07:59 PM
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Germany
Sir John Offline
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Germany
Just done sum reading on t'net & it says the eco sport engine is a GDI unit with a turbo charger.
Also there are some concerns about GDI units because some raw fuel may be injected into the cylinders & not combusted.

Re: Plus 4 Ecoboost report - part 2 [Re: Sir John] #545313
28/11/18 08:39 PM
28/11/18 08:39 PM
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Posts: 1,800
Kent & Dorset, UK
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Originally Posted By Sir John
Just done sum reading on t'net & it says the eco sport engine is a GDI unit with a turbo charger.
Also there are some concerns about GDI units because some raw fuel may be injected into the cylinders & not combusted.


The 'raw fuel' issue on some GDI engines (incomplete combustion meaning petrol diluting oil on valve stem seals and/or carbon deposits on valve head undersides) are both caused by poor swirl of the fuel pulses at low revs. Turbocharging increases gas flow velocity (and therefore swirl) and is more likely to cure the fueling issues, not worsen them. Periodically driving the engine hard is another way to avoid issues! drive


Stuart
"There's no skill substitute like cubic inches."
Re: Plus 4 Ecoboost report - part 2 [Re: griffo] #545319
28/11/18 09:12 PM
28/11/18 09:12 PM
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Cornwall
griffo Offline OP
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Think there some confusion here. There is an issue with all GDI engines to a greater or lesser extent. By definition, unlike port injection, no fuel mixture passes the inlet valves -- only air. This means pcv gases and oil vapour leaves deposits on valve backs and inlet tracts and eventually (often rather quickly) erodes performance and efficiency. This is why all my gdi cars, including the Plus 4, do not vent crankcase pressure back into the inlet system.

Re: Plus 4 Ecoboost report - part 2 [Re: griffo] #545332
28/11/18 10:26 PM
28/11/18 10:26 PM
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Kent & Dorset, UK
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Originally Posted By griffo
By definition, unlike port injection, no fuel mixture passes the inlet valves -- only air.


Indeed, and is why (in some Audi & BMW engines - I don't know about the Ford GDI) it is the exhaust valve stem seals that are affected... along with the other carbon deposit issues etc


Stuart
"There's no skill substitute like cubic inches."
Re: Plus 4 Ecoboost report - part 2 [Re: griffo] #545370
29/11/18 10:20 AM
29/11/18 10:20 AM
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Cornwall
griffo Offline OP
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I have not heard before of the "raw fuel" issue. I guess all systems see raw fuel from a cold start. The main identified downside of GDI technology (about which I have general misgivings -- very high pressure fuel, complex and expensive injectors etc) is that it cannot deal with blowby gases from crankcase ventilation which, for emissions reasons, are these days all funnelled into the inlet system. When inlet valves/intake runners saw fuel/air mixture these deposits were mainly washed off (particularly with decent quality high detergent fuels). This cannot happen with GDI's and there are many well-documented issues (with Ford, BMW, Volvo) of a rapid buildup of crud baking onto the back of valves and ports. I take your point on the raw fuel issue -- just another reason to have misgivings about GDI. cheers.

Re: Plus 4 Ecoboost report - part 2 [Re: griffo] #545551
30/11/18 09:35 AM
30/11/18 09:35 AM
Joined: Feb 2016
Posts: 1,931
East Harling, Norfolk UK
Richard Wood Online NoMood
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East Harling, Norfolk UK
Reading up about the Ford Cyclone engine on my car, its interesting to note that its development was spurred by competition from GM's 3.6 V6 direct injection powerplant.

Although initial development also incorporated direct injection, Ford engineers found they could build a port injection engine developing more power and torque, taking advantage of charge cooling properties. Despite the advantages of direct injection, on balance they chose to follow this path aided by development of their individual variable cam timing and reduced production costs.

Last edited by Richard Wood; 30/11/18 11:49 AM.
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