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Discussion Starter · #1 · (Edited)
Right, heres how this works. post your questions, queries, and issues in here. it keeps it all in one place. please state what engine into what model/year of corsa in the post so i can help as fast as possible. this means, if anyone else is attempting a conversion, they only need look in one place.

heres some links to help you guys: (im not on commision lol)

http://www.roosemotorsport.co.uk - hose kits, there are 3 "sets" needed for an xe conversion.

http://www.txautosport.co.uk/ - alloy rads, hoses, tophats and other bling.

http://www.greenfilters.co.uk/m25/V...-_Single_Cone_Induction_Kit/product_info.html - the actual airfilter kit i use. halfords did list these at £54.

http://www.sportex-exhausts.com - these guys do a ready made 2.0 corsa system, which is excellent, just remember, thier race spec stuff is bloody loud...

www.tuning.co.uk - these also stock sportex stuff.

http://cgi.ebay.co.uk/Astra-Mk3-Cavalier-Mk3-Calibra-Ferodo-Sports-Brake-Pads-/290504709866 - these pads with std 256mm disks and calipers are fantastic, great for road use and track aswell. please use dot 5.1 fluid. its onlines's ebay shop btw.

feel free to ask anything...

Sloth
 

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Thanks dude!

B.
 

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1997 shell, originally was 1.4 8v... now has the mounts (apat from one) for a x16xe which is fitted now. What ESSENTIALS do I need?
 

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Discussion Starter · #4 ·
1997 shell, originally was 1.4 8v... now has the mounts (apat from one) for a x16xe which is fitted now. What ESSENTIALS do I need?
you need a type 1 mount kit, some 1.6 16v 22 spilne shafts, and thats the main bits, the rest is small easy stuff like a twin pipe header tank.:thumbs_up:
 

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you need a type 1 mount kit, some 1.6 16v 22 spilne shafts, and thats the main bits, the rest is small easy stuff like a twin pipe header tank.:thumbs_up:
I ahve a twin pipe header tank? here is my bay ATM
 

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Discussion Starter · #7 ·
your lexmaul makes me moist...

thats the right header, the servo pipe will fit with the nut end spun round a bit.
 

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Discussion Starter · #9 ·
so first on shopping list is type one mount kit, how much are these new, and how much can i expect to pay 2nd hand?
search for threads started by david dixon on here, there is a link to his ebay shop. ;)

i need a conversion gear linkage... any ideas?
follow the guide i posted up there /\ :thumbs_up:

i need to get a single pipe header tank and a brake servo pipe from a 1.2 8v i believe?
you need a double pipe one, and the servo pipe from a 1.2 8v, or 1.4 8v spi, or mpi.

Two questions, who sells decent hose kits for a 1.6 16v and is there any difference in the kits for X16XE/C16XE and X16XEL, if I remember right there is one water pipe different between the C16 and X16XE kits, not sure on the XEL though, I'd imagine its the same as the X16XE ?

That could be 3 questions.
roose motorsport sell kits for the corsa gsi, which covers all engines. give them a call and ask what they can do.
 
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Discussion Starter · #11 · (Edited)
stolen/borrowed from cs:

Parts

Engine
Gearbox
Loom
ECU
Power steering bracket
Drive shafts (see below for more info)
Front engine mount
Modified gear linkage
16v Header tank
1.6 16v Fuel Pump & fuel clips
XE exhaust
Cavalier inner CV's
ARB Spacers (only needed if keeping ARB)
1.0 12v top hose for the right hand side of the rad (thermostat housing)
Rear gear box mount spacer
Transducer for gearbox ( to fit on mechanical speedo drive for electronic speedo)
Rear coolant gallery (standard xe from Calibra or Cavalier is fine)
Fuel pipes that attach to the fuel rail
Alternator
Alt bracket
Alt adjuster
PAS pump
2 v belts
Twin v bottom pulley
Ecotec adapter plate and pipe or powercap (unless you want to cut bulkhead and use sfi box

Brakes/Suspension:
2.0 Cavalier disks, calipers and pads
If you have coilovers/springs they need to be 300lb springs.

Procedure

Engine choice

Any of the 20xe engines will do, unlike the nova there is no requirement to run the single vee alternator pulleys, the multirib stuff works perfectly well.

Obviously you need to first remove the original engine as per Haynes or other service manual.

Gearbox choice

Any of the big block gearboxes will suffice; they are all plenty strong enough for an xe engine. Choose based on cost, availability and ratios, but the normal f20 box from Cavaliers, Calibras etc is ideal

Wiring

Before you fit the engine you need to remove the starting and charging loom from the original corsa engine and fit it to the xe. This makes the wiring really easy as now you have two completely separate discrete looms. Once the engine is in the car you simply plug the original corsa starting and charging loom back into the corsa car loom.

When you removed the corsa engine loom (with the engine) you should have been left with a square 9 pin plug in the drivers side foot well. The complete xe loom remains on the engine throughout and simply feed through the bulkhead in the same place as the original corsa loom. On the end of the xe loom you have 3 plugs which will need to be cut off, some of these will be joined to the 9-pin plug and some simply left. (You can cut the plug off the corsa loom before discarding it and use this on the end of the xe loom so that you can still easily unplug it for removal. (Easier to do this before you fit it to the car)

Wiring colours are as follows:

XE loom

Green - rev counter feed, wire to green on corsa plug (some corsas may not have this wire, in which case use a bullet connector and run a green wire to the rear of the clocks if you wish to fit a set with a revcounter.

Brown/Blue - ECU light, match to corsa plug

Brown/White - Diagnostics, match to corsa plug

Brown/Yellow - Diagnostics, match to corsa plug

Blue/red (thick) - Fuel pump feed, match to corsa plug

Blue - Coolant temp sensor feed for dash clocks, match to plug

Red/White - Autobox, unused in conversion

Red/Blue (thin) - electronic speedo feed, match to corsa plug

Red (large) - Battery +ve

Black (thin) - Ignition live - move this inside and match it to the corsa plug

Black/green - Aircon (unused in conversion)

Fuel relay block remains as is.

Engine mounts

Mounts are commonly available on ebay, or from Chris Astley (Link to Chris Astley Motorsport) The simplest is fitting to a 1.2 8v corsa where you just need the drop mount. This bolts between the engine block and the original rubber on the wing.



For 16v corsa models you will also need a wing mount which takes a calibra rubber. This bolts into 4 pre-tapped holes on the corsa inner wing (16v models don't have a rubber here like the 8v ones.)

The front gearbox mount is easy; just use the original corsa one.

The rear gearbox mount sometimes needs a spacer, sometimes doesn't. Undo the bolts and fitted the under car rubber as close to the box as possible, then fit the engine and measure the gap. Spacers can be made from flat bar or bought in if you aren't the 'home engineer'.

Engine mounts can be stiffened by filling the gaps with polyeurathane sealant

Gear linkage

The gear linkage needs to be extended by the same amount as your gearbox spacer if you have one. Insert new metal into the curved section being sure to keep the alignment. Also extend the top bar using a piece of threaded rod and some small rose joints.

Coolant hoses

Use your original 1.2 8v radiator. You will need to fit the 1.0 12v top hose for the right hand side of the rad (thermostat housing)

The bottom hose and header tank hose are retained from the corsa.

The long hose from the cylinder head (under the dizzy) runs to the heater matrix. You may need to shorten this (use some copper plumbing pipe joiners with the solder removed as these have a ridge to stop the pipe blowing off. Simply cut it on the long straight run and shortened it.)

This leaves you with two outlets on the coolant gallery, one goes to the heater matrix and one to the header tank. The heater matrix pipe comes from the corsa, but the header tank pipe had to be made up from copper pipe and the bends from the discarded pipes.

Take this opportunity to dispose of the rusty spring clips and fit new stainless jubilee clips in their place.

Fuel supply

If you have a single point injected corsa your current fuel pump will not supply sufficient pressure for the new engine. A pump from a multipoint corsa must therefore be used, and transferred into the SPI carrier in the top of the tank.

In the engine bay, you should have the original rubber pipes coming off the fuel rail from the donor car. Sleeve these over the plastic pipes in the corsa and secure them. Use two proper fuel clips here, DO NOT use jubilee clips as they will leak.

Induction

It is best to use the standard air box in the conversion. Cone filters aren't always a good idea, especially in a cramped engine bay. Space is tight, with the clips on the air box just touching the cam cover on the engine.

The easiest way is to use an Ecotec 2.0 induction pipe and a converter plate for the TB, Powercaps can also be used. The SFI box WILL NOT fit. Bulkhead modification is again a suck it and see job, but the powercap will almost certainly need it.

The ecotec bend is joined to the xe afm and then use the xe hose to the airbox as it contains the air temp sensor.

Exhaust

The standard xe manifold is the most suitable really, anything 4-1 wont leave sufficient ground clearance under the collector.

You will need to lower the ARB a bit if you wish to keep it (An upgrade is a 23mm one off a diesel combo van)

There will be some welding involved with the exhaust here!

Driveshafts and Hubs

Few options here:

22 spline smallblock shafts:

You can run a set of these from a TD or gsi corsa with the original outer hubs, bearings and small cv joints, using an mk2 cavalier 1.6 big block inner cv joint to mate it to the box, simple, quick, but obviously leaves you with vulnerable outer cv's

Big block shafts with machined hubs:

Machined hubs are available widely to fit into the std corsa bearings in the steering knuckle. You then use the big block driveshafts complete with outer cvs. This is ok, but there have been instances where these hubs have failed due to being too thin around the ends of the splines. Many people run these with success however.

Big block shafts with machined knuckles:

This is the best solution and involves machining out the steering knuckle to accept a larger bearing allowing you to retain the std hub dimensions. The knuckle should be carefully bored to 68mm by a machine shop and the circlip grooves deepened. There is also a small ridge on the hubs which should be removed to prevent them fouling the new bearings. Golf mk2 1988 synchro 4x4 rear wheel bearings can now be fitted.

It is worth checking the length of the shafts once the car is on the ground with full weight on wheels. If the shafts are too long they will bottom out and WILL NEED SHORTENING.

The equal length shaft setup from the calibra will also fit complete and is one of the best modifications on a powerful corsa.

Speedo feed

All the f20 boxes are mechanical drive, so you will need the mechanical fitting with the small gearwheel on it in the box from the donor car.

If your corsa has a cable speedo, simply attach the cable to the fitting on the box, however if it is electric things are a little more involved. All electric drive corsa boxes use an f28 style electric pickup, which cant be used with the f20 box. If you have this issue, use an early c14se/c14nz corsa sender, which simply screw to the fitting on the box and requires an earth, ign live and the feed to the dash.

Suspension and brakes

Obviously these will need to be upgraded suitably to match the higher top speed and extra engine weight. (See Link to big brake Tutorial

Servicing

On a side note, it is obvious that some aspects of servicing are best undertaken in a preventative manner with the engine out of the car. Change the timing belt and rollers, spark plugs, clutch, etc before fitting and the oil and water afterwards.

Legal

Once the engine conversion is complete you will need to let the DVLA know about it. This can be done on your V5C and sent back to them. You will need to declare the new engines cubic capacity and the new engine number.

You will also need to declare the engine change to your insurance company. Corsa Sport Premium members get up to 15% discount from:
Adrian Flux & HIC (Herts Insurance Consultants)

MOT
Emission testing is something that confuses a lot of people, and some testers too!

The law states that emission levels are tested to the age of the block. You therefore need to provide proof of the age of the block to the tester. If you cannot prove the age he is bound by law to test it to current levels. It is best therefore to keep a copy of the donor car's V5C to prove the engine age.
 

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Sloth, would you say its easier for me to fit a steering rack from a sport ( hydraulic ) to avoid messing with my epas? Electrics are not my strong point so want to keep messing with chopping into looms to a minimum really.

Conversion is a 1.2 16v to 1.6 16v
 

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Discussion Starter · #13 ·
keep the epas, its a self contained system. just make sure the sport gearbox is electrical speedo so it produces the correct pulse wave for the speed signal. and tbh the epas is nicer than hydraulic.
 
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Yeah i was wanting to keep just because it will leave less clutter in the bay. Im not sure what year the engine came out of, pretty sure its 97+ though will have to find out. If its not an electrical one is it just a case of changing the speedo sender?
 

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Discussion Starter · #15 ·
sadly not, the internals of the box are different. where the speedo goes into the top of the box, if its black with 3 pins, its right. if not there is a way around it, i can supply a kit but it takes a little bit of wiring in.
 

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ok so basicly i want a bigger engine in my car and want it to be noticbly quick basicly have some pulling power i dont want something to powerfull as coulldnt afford it was wondering for peoples advice on a good conversion and prices of everything need from engine bits to fitting cheers.
 

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Discussion Starter · #18 ·
any more info on this sloth? i have a f20 box but my dials are electronic, so i either need a speado cable and cable driven dials or what is mentioned above, what cars/engines have this part?
you need the transponder from a early corsa b 1.4 8v. i may be able to get one on sunday, £10 posted.
All work been done on engine showed here..

Sloth regardless of price. is everything else ok? in your opinion? This oucld be happening alot sooner than thought!
ignoring price, it seems a good motor, just make sure he has recipts, and take the sump off and have a good look inside.
ok so basicly i want a bigger engine in my car and want it to be noticbly quick basicly have some pulling power i dont want something to powerfull as coulldnt afford it was wondering for peoples advice on a good conversion and prices of everything need from engine bits to fitting cheers.
can you afford the insurance and tax? how old are you?
 

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Discussion Starter · #19 ·
also vegas, it needs arp rod bolts ;)
 

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Discussion Starter · #20 ·
random question but would a 6 speed gear box fit to most engines? or only certain ones?
it fits all big blocks straight on, and has been bolted to some 1.6 16v and 8v motors running turbos. why what did you have in mind?
 
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