G20 Junior, Power output of 1.4 zetec se

G20 Junior, Power output of 1.4 zetec se

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GinG15

Original Poster:

501 posts

170 months

Tuesday 12th May 2015
quotequote all
we recently bought a g20 junior (irish-cup) coupé fitted with the original ginetta(still sealed) 1.4 zetec se engine (full alloy) running on the original DAT ECU. mapping is correct.

the engine should develop around 90-100 horsepower.

we drove it last weekend the first time on the track. poweroutput was a bit disapointing....it felt quite feeble.

on the other side: 90horses are not that much.
are we too critical or are those the facts?

engine-upgrade wont be a problem as we still have some budget left and we do not need to keep this engine for race regulations.

would a duratec be a straight fit? i mean enginemounts, bellhousing?

Edited by GinG15 on Tuesday 12th May 14:14

Mark Benson

7,498 posts

268 months

Thursday 28th May 2015
quotequote all
We run a G20 senior car (no roof).

The car is quite heavy, fibreglass isn't light stuff and there's a lot of it, especially in the coupe. One thing I've noticed racing a Westfield with similar power this year is how much later I can brake thanks to the lower weight.

Sadly the Duratec is a completely different engine (not a simple swap) and would need a new bellhousing, exhaust and bodywork mods to suit (exits opposite side), all pipework re-routing and much more besides.
However a Zetec from a Focus ST170 drops straight in and bolts up to the existing gearbox - it transformed our car (which was already more powerful than yours) into something with a reasonable power to weight (we see 185bhp with the original throttle bodies, mapping and a new exhaust). Total cost was about £1500 for the engine, exhaust and mapping.

I can guarantee the Sierra diff won't last long though (we've replaced ours with a Quaife).

GinG15

Original Poster:

501 posts

170 months

Thursday 28th May 2015
quotequote all
not correct:

the ST170 engine has the exhaust on passenger side and inlet on driver side (RWD, UK-car)

the 1.4L fully allyo zetec Se engine has the exhaust on the driver side and inlet on the passenger side...the same as a 2.0 litre ford HE Duratec

Edited by GinG15 on Thursday 28th May 22:54

Mark Benson

7,498 posts

268 months

Friday 29th May 2015
quotequote all
GinG15 said:
not correct:

the ST170 engine has the exhaust on passenger side and inlet on driver side (RWD, UK-car)

the 1.4L fully allyo zetec Se engine has the exhaust on the driver side and inlet on the passenger side...the same as a 2.0 litre ford HE Duratec

Edited by GinG15 on Thursday 28th May 22:54
Then my apologies - I thought all Zetecs were the other way round.
That's what happens when you assume!

I suspect bellhousing is the sticking point, but a gearbox from an MX5 would sort that....

GinG15

Original Poster:

501 posts

170 months

Friday 29th May 2015
quotequote all
tell me, why would a mx5 gearbox sort that point?

Mark Benson

7,498 posts

268 months

Friday 29th May 2015
quotequote all
AFAIK (and I could be wrong, it wouldn't be the first time even on this thread) the Mk3 MX5 (NC?) gearbox bolts straight to a Duratec, though it's not as simple as that - theres some clutch/flywheel issues to sort out (nothing insurmountable I don't think).

andy97

4,691 posts

221 months

Saturday 30th May 2015
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The Mazda mx5 mk3 engine is a Duratec so the gearbox from an mx5 mk3 should fit another Duratec engined car, I guess.

The 1.4 Zetec SE engine in the g20 Junior racer may actually be of Duratec origin , rather than of Zetec 1800 iron block origin as in the g20 open car racer.

dominant

4 posts

175 months

Thursday 13th August 2015
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The ginetta g20 junior uses the yamaha developed all alloy sigma engine fitted to fiesta etc. The puma 1700 engine will be a straight swap and the dta e u will run the 1700 as well. The zetec only refers to the trim level on the fords fitted with the sigma type engine. 07774959894

GinG15

Original Poster:

501 posts

170 months

Thursday 13th August 2015
quotequote all
thanks for the info...thats what i hoped to hear.

the driver (meanwhile also car-owner) has decided that he "needs" at least 200BHP

so a duratec is in order now.