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Fiesta-Si.com • View topic - 1800gti engine in to 1600 si
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gav84
PostPosted: Sat May 07, 2011 6:50 pm 
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i'm picking up a escort 1.8gti engine next weekend i wanted to know what i would need to change i'm getting the ecu engine loom and both manifold's with the engine, will the 1.6 alternator starter motor and cat fit the 1.8?
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Jam
PostPosted: Sat May 07, 2011 11:08 pm 
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use your 1600 downpipe and cat. rest will swap over ;) Si's are external pats internal edis. youll need to check your ecu code to see what it is... you may have to swap a few of the pins over on the si plug but its no big deal. if its got a plastic inlet on beware thats likley to foul the bulkhead. use your alloy one and a 1.8 throttle body.

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SLEEMAN
PostPosted: Sun May 08, 2011 3:25 am 
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does it really foul the bulkhead? my escort gti engine in my fiesta xr2i has cleared it easy!!! gti escorts are the same internal edis and external pats, just need the chip in the key to swap over thats it. and i think the ecu is plug and play. may have to do some research though and investigate what wires go into each loom. you could also add 2.0 upgrades on the gti engine like the throttle body, cams, fuel injectors, ecu (everyone knows that plug and play on an si loom), and the maf and you can easy have near the 130 bhp mark, its been proven and tested!

basically all you need to know is that all silvertop zetec engines are exactly the same including bolt holes etc, just internal size is different so everything will swap over including all your mounts, ancillaries etc. but whilst you have the engine out matey i highly advise changing the water pump and cambelt kit, clutch kit and possibly the 2.0 upgrade kits

if you want some 2.0 upgrade parts i have the 2.0 camshafts, throttle body, and gti fuel rail with the later 2.0 brown injectors in them. pm me if you want and if you want some pics of how my engine looks like in my fiesta
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gav84
PostPosted: Sun May 08, 2011 10:03 am 
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Thank's for the help I was gonna do quite a bit to the engine before I put it in to the car first. What you were saying with the loom would i need to swap it over or could I use the old one and would I need the chip out of the gti key or is it just plug and play?
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SLEEMAN
PostPosted: Sun May 08, 2011 4:38 pm 
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you can use the standard si loom as its all the same really but the inlet manifold loom you will need to rewire though as the air temperature sensor plug is different
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gav84
PostPosted: Sun May 08, 2011 4:53 pm 
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That's good then. What about the chip in the key will I need it?
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SLEEMAN
PostPosted: Mon May 09, 2011 12:00 am 
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yes you will need it if you going to use the gti ecu, if you use a 2.0 ecu you won't need is as long as it doesn't have the pats
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stainlessmole
PostPosted: Mon May 09, 2011 12:25 am 
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Don't mean to rape this topic, but the best cams for a n/a silvertop 2.0 are the ST170 ones right?

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SLEEMAN
PostPosted: Mon May 09, 2011 4:52 pm 
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i've already enquired about that they won't fit in different setups in the silvertop and blacktop/st170 head. they would fit in a blacktop i think
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stainlessmole
PostPosted: Mon May 09, 2011 4:58 pm 
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Damn, i guess the RS1800/Standard 2.0 ones are best then... unless i opt for some aftermarket ones :doh:

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SLEEMAN
PostPosted: Mon May 09, 2011 7:53 pm 
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newman cams all the way if you want aftermarket i'm hearing alot of bad things from people that have had piper or kent!! i.e. the lobes wear out fast!
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gav84
PostPosted: Mon May 09, 2011 7:54 pm 
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Sweet i'v spoke to the guy I'm getting the engine from still has the key chip so it's all good :) what's the best way to get more bhp out of the 1.8 engine? I was gonna get some cams filter chip and de cat it i'v got a s/s cat bk already
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SLEEMAN
PostPosted: Mon May 09, 2011 8:21 pm 
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4-2-1 exhaust manifold, best upgrade for any zetec engine, frees the revs up alot more with decat, but get make one like a stainless steel one, a 2.5inch diameter exhaust system, decat but make it a bolt on option so you can keep the cat for the law abiding folk that we are ahem. 2.0 cams, 2.0 throttle body, theres some people that can bore and polish these throttle bodies on ebay etc this will improve throttle response and allow air to flow better, if you combine the 2.0 cams and throttle body as i said above with the fuel injectors, ecu and maf then you can get up to and maybe more than 130bhp. depending how good the engine is. that alone is enough for a fiesta for now. till you'll be wanting more and more lol oh for air filter options either the standard panel filter box with a k&n panel filter and a redirected cold air feed or a fully sheilded induction kit like the viper kit from pipercross or the bmc cda carbon induction kit are the best options. normal filters get dirty quick as they are not covered.

higher tuning options are the likes of bike carbs or tb's. or jenvey/omex throttle body systems, and the turbo'd options, yes you can turbo a 1.8 using the right stuff.
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