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Seicento Seicento turbo, homebrew Mpi

Introduction

Thought I'd make a thread for my little Seicento, started as all good builds do with the cheapest, most solid Seicento I could find for next to no money.
Needed an alternator and a battery, modified a late type on one with the bolt on terminals and squeezed in an 063

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We had a turbo, we had several turbo’s in fact, we went with a CT9, from a Starlet Glanza V, the other options were one of the pair from a Mitsubishi Legnum VR4 (bit small) or a T3 with a cossie exh housing (too big)

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Got some flanges cut out by a local engineering place, wanted all the holes to line up and all that

To attach the turbo I cut and welded a flange onto the standard manifold, added in a pipe for the external wastegate, would have been rude not to use it as it was there eh :lol:
Added an oil return to the sump, used a bit of ¾ hydraulic fitting to make the barb (you’ll notice a theme developing), plumbed the oil feed up in the usual manner using the post filter oil pump take off, used more hydraulic hose for this too
This was the end of the easy part, attaching it ain’t no big thing
For management we went for DET3, it was there and it was cheap, does a surprising amount for very little, and fortunately it’s been used on the little Fiat’s more than a couple of times, there’s even wiring diagrams
At this point we had to change the head, and go for multi point injection, in short we got into the build and realized how much potential it had, especially to have some fun and troll some Golf 1.8 turbos.
While we were at it we stuck in some 350cc injectors from a Jag XKR 4.2

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And my mate (Driveitlikeustoleit on here) got on with wiring, which was pretty easy! Well according to him anyway, I was lost as soon as that started, I weld stuff to stuff and make things fit in holes, electrics are a bit too cosmic. He’s a bit of a Fiat nut, he put a 1242 16v in a Cinq back in the day

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Used an Airtec intercooler from a Fiesta RST I had in stock, seemed to fit fairly well, the radiator is a copy of a Fletcher Mini one, modified to suit the in/out and the hole (rad cap was in the way), had to re-route all the coolant hoses and make them work around the turbo, the standard cross of doom thing would have sat in the turbo :lol:
The CT9 had a water cooled core, we kept it that way, fitted a RevoTec fan switch and a small radiator fan
A later addition is the oil cooler that’s not pictured, it managed to cook the oil in around 20 miles, so it was well necessary

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Anyone guess what happened?

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Head gasket no.1, failed on the way back from mapping it (well finally failed), I reckon it might have been to do with a boost spike to 1.5 bar when we test drove it once :lol:
Swapped the fibre one out for a 1242 multi layer, 90 degree over torqued head bolts, and some colder plugs, then mapped it again, so far it’s been holding fine

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After a bit of driving it became apparent that fuel surge would be an issue, so I installed a swirl pot, the fuel system was always upgraded with a 4 bar pump from the beginning

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That takes us to now, the wing vent serves a purpose, the air filter is in there, ran out of space under the bonnet
Just needs suspension, brakes and some more rubber on the road, it’s a bit of a handful on the standard 155 tyres to say the least

Thanks for reading
Sam

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