Author Topic: For those of you asking about or interested in Corsa/Tigra 2.0 conversions  (Read 15118 times)

0 Members and 1 Guest are viewing this topic.

Offline Bad Kid

  • Calibra Pro
  • Posts: 613
  • Respect 10
  • Gender: Male
    • Calibra B204 Turbo
Right I've noticed a few people asking about 2.0 conversions into Corsa/Tigra for a project. Here is a rough outline of what is involved.

This guide applies for all 2.0 big block eg 20SEH, C20NE, 20XE, C20XE, X20XEV and C20LET

Engine mountings:
There are kits available off the shelf to physically mount the engine and box in the bay.

The shells have 2 mounts at the front, one for block and one for gearbox (as per Calibra). The rear mount attaches under the bulkhead, as there is no subframe on the Corsa B/Tigra.

There are 2 types of mount kit depending on which Corsa/Tigra you are using.  You can also buy an additional plate which lets you fit power steering to the block as well.

Gearbox choice:
Use F16/F18/F20 for C20XE
Use F28 for C20LET, especially tuned C20LET (others *may* last on std C20LET)

F28 requires the suspension tie bars to be lowered to clear it's bellhousing (you can get a kit for this).

Driveshaft/hub options:
a) Use Corsa GSi 22 spline outers and Cavalier Mk2 1.6 inners
b) Use Calibra equal length shafts (with bracket), with big-block hubs pressed into your Corsa steering knuckles and the circlip moved to suit
c) Use one of the various conversion shafts available

Option B is best for reduced torque steer and strength

Gear linkage:
This must be cut and extended to suit the spacer you get in the enigne mount kit, or can be bought ready-modified

Hoses and pipework:
A mix of Corsa hoses and Calibra hoses works fine, or Roose sell silicone converison kits. Use std Corsa rad.

Use a Tigra header tank or Corsa B diesel one (2 outlets)

Wiring:
Find a Cav/Calibra in the scrapyard and cut a few inches off the car-loom side of the 3 plugs in the drivers footwell. Plug this into your 2.0 engine loom in the footwell. Chop the Corsa plug off (it's grey IIRC) then solder the wires colour for colour. Connect the single black wire in the engine bay to an ignition live switch.

Fit a Corsa B starter/charger loom (from 1.4/1.6) to the back of your 2.0 engine. This will then plug and play to the loom coming from the car to start and charge the car.

Other
- Some parts may not clear the bonnet, especially on tigras, for example enlarged tophats
- It is wise to ditch the typical multi-vee auxillary belt and go to early single-vee. This is thinner and easier to fit in the bay and work on
- Change the 3-way hose on the back of the block before fitting engine and secure it with jubilees not VX clips
- You'll need a slimline rad fan
- Exhaust must be made to suit

That took f*cking ages to type
NURBURGRING CHALLENGE :-D

Offline Trigger

  • Newbie
  • Posts: 0
  • Respect 0
  • Gender: Male
    • Cally 16v Ecotec
Re: For those of you asking about or interested in Corsa/Tigra 2.0 conversions
« Reply #1 on: September 18, 2010, 19:34:01 PM »
Guide placed. I bet that took f*cking ages to type :)

Offline Bad Kid

  • Calibra Pro
  • Posts: 613
  • Respect 10
  • Gender: Male
    • Calibra B204 Turbo
Re: For those of you asking about or interested in Corsa/Tigra 2.0 conversions
« Reply #2 on: September 18, 2010, 19:36:09 PM »
Yep I was that hunched over the keyboard it hurt my back
NURBURGRING CHALLENGE :-D

Callum-calibra

  • Guest
Re: For those of you asking about or interested in Corsa/Tigra 2.0 conversions
« Reply #3 on: September 18, 2010, 19:55:45 PM »
Nice one bud I have bookmarked this thread in my browser. Now to find a corsa with a decemt shell for the misses.