a little astra g v6 conversion info i wrote
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THis is a guide for those who plans to converrt from their tiny 4 little banger to a mighty V6 cylinder monster engine.TRANSCRIPT
11/30/2015 A little astra g v6 conversion info i wrote
http://www.astraownersclub.com/vb/showthread.php/548828-A-little-astra-g-v6-conversion-info-i-wrote 1/11
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01-07-2009, 15:03
A little astra g v6 conversion info i wrote
Updated 22/10/2009 (my 2nd v6 conversion took some picutes this time) loaded them up.
Heres a little v6 info, At first i wrote it for myself so everything i knew was in one place and i didntforget anything at the time of the conversion, This wirte up is a work in progress and i change quiteregular, Im sorry for any grammer and spelling misstakes, Im not the greatest but i tryed my bestlol
In my eyes your better of using the x25xe v6 out of the vectra b if your wanting to v6 a astra g fora number of reasons*The cav inlet (c25xe) can sometimes hit the brake servo.*The vectra C (z32se) will take abit of wiring in.*The x26xe is flybywire, Plus you cant decat as it wont run right and eml coming up, Due to allthe lamda sensors before and after the cats
(remember to get the the ecu, transponder from around the ignition barrel and the chip from thekey)
I like said use the x25xe stuff but why waste your time with a 2.5L, When you can fit the 3.0L or 3.2from a omega (Like i did ). When using the above engine its wire for wire apart from the tempguage which works off milliamps, To get past this keep the original astra ECU plugged in to run thetemp gauge and CTS but the rest of the wiring can be chopped, It will have loads of Fault codes butit will still drive the clocks.
luckley i never had to tap the sensor in i just replaced the vectra dash temp sensor on the watercoolent brige
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11/30/2015 A little astra g v6 conversion info i wrote
http://www.astraownersclub.com/vb/showthread.php/548828-A-little-astra-g-v6-conversion-info-i-wrote 2/11
Plus the rev gauge will read wrong as your clocks will read a signal from a 4pot engine and the v6is 6pot so it is getting 2 more pulses every cycle/rev you can get past this by using a pulseconvertor off dom on http://www.migweb.co.uk/forums/items...adjusters.html or go to his web sitehttp://www.picbits.co.uk/ and look under gadgets, Then you have to change the flybywire pedalfor the cable type some cars come with it already (mostly early 1.6 petrols) and the part number is90530835 (around £25), There Is already a hole for the cable in the bulk head behide the driversidestrut you'll have to get the rubber grommet of the cable instead of the blanking one.
As you can see the hole coming into the foot well (Can also be used for cables to power ICE)
11/30/2015 A little astra g v6 conversion info i wrote
http://www.astraownersclub.com/vb/showthread.php/548828-A-little-astra-g-v6-conversion-info-i-wrote 3/11
NOTE: (Ive posted all you need to know about the wiring to the engine into the car, at the bottom ofthe page)
Just use the f23 gearbox that most mk4 come with i.e GSI's and some diesels (But not the 2.2 asthe starter motor is in the wrong place), You can use the (Early) flat type flywheel from a redtop(C20XE) asthe newer shape (Z20LET) flywheels are only a 6 bolt pattern and the v6 is an 8 bolt pattern.
You will also need the c20xe pressure plate to match the flat type flywheel, But you have to use theCalibra turbo(c20let/f28 box) friction disc to match the input shaft from the f23 gearbox (The f23and f28 have a different number of splines to the f20/f18/f25), Or just use the whole (C20LET)flywheel and clutchset up, But they use the pot type fly and is heavyer than the flat type (pot9.6kgs, flat 6.5kgs compared to the v6 fly 15.6kgs)
The differences between the flat and pot types (Cant find 1 of the v6 item) the v6 is almost the twocombined
The clutch set ups that i have mentioned can also be used with other engine conversion where thef23 is used (ie C20LET/C20XE in a astra mk4, Even the zafira,)
11/30/2015 A little astra g v6 conversion info i wrote
http://www.astraownersclub.com/vb/showthread.php/548828-A-little-astra-g-v6-conversion-info-i-wrote 4/11
NOTE: Dont use the v6 flywheel bolts they have a big head and they pretrude too far and can hit theclutch, use the C20LET bolts instead as there flat (Part number 90511423)
So straight away you have a lightend/lighter flywheel as the v6 one weighs a tonne. This link is toone the of pages on MARK T's Website, it will help alothttp://77.96.230.10/sytemsandsoftwar...F25WithF20.htmHe is a very knowledgeable person and his site has got me out of some sticky situations.
If your car uses the f23 gearbox already you wont need to change the driveshafts, But if not youcan use the vectra b v6 shafts (like i did) as there the same size as the astra g, Plus you have theadded benefit of equal lenght drive shafts (less wheel spin and sell torque steer). The bell housingon the f23 gear box is 23mm shorter than the f25 so you will have to space the shaft mount over23mm (you can get them off ebay) so it meets up with the mount holes on the back of the engine.
The way i mounted the engine was by making a mount that bolts original astra drivers side rubbermount using the holes on the engine where the vectra torque mount goes and one of the mountholes in the power steering deletion bracket (more about the deletion bracket later) and the rest isjust held in by the other 3 mounts on the gearbox,
Here's my engine mount (note: The far right bolt of the PSD bracket isnt in as i had to cut it down)
11/30/2015 A little astra g v6 conversion info i wrote
http://www.astraownersclub.com/vb/showthread.php/548828-A-little-astra-g-v6-conversion-info-i-wrote 5/11
You have to space the mount away from the engine as a belt goes through the middle of it like so.
Here a like to some other astra mounts http://www.astraownersclub.com/vb/sh...d.php?t=191587
Dropping the engine in was easy the only thing you have to take off is the top half of the inlet(unlike the corsa where you hvae to fit the bear block and build it up once its in)
Then put the inlet back on
11/30/2015 A little astra g v6 conversion info i wrote
http://www.astraownersclub.com/vb/showthread.php/548828-A-little-astra-g-v6-conversion-info-i-wrote 6/11
The astra g uses electric steering so there is no need for the power steering pump on the enginethere are two ways to do this:1.The power steering deletion bracket (I'll have to get the part number for this).2. Just loop the pipes on the pump with a small reservoir for oil to keep it lubricated.(note: that you will have to make a slightly different engine mount if you dont use the deletionbracket)
Heres the PSD bracket, The mount in the pic as from the vectra c gsi, My mount bolts in the sameplaces (red arrows) and the bracket in yellow
For the brakes your better off going for the 5 stud set up if you dont have them already, you willalso get rear discs if you do not have them already and you can run bigger 308mm discs
11/30/2015 A little astra g v6 conversion info i wrote
http://www.astraownersclub.com/vb/showthread.php/548828-A-little-astra-g-v6-conversion-info-i-wrote 7/11
Plus you have a better choice of wheels to chose from, Some astra's dont have abs and you can'tget a speed signal from the f23 so you have to fit a abs hub (if you go 5stud you will already have aabs ring on) to get a signal from and run it to the clocks but the signal is very weak without the absecu so you have to run a amp, The diagram to make your own is avalable from Mark T on AOC orask him to make you one (i'm going to ask him for permission if i can post a link to the diagram)And Dom that i mentioned before is currently making a prototypehttp://www.migweb.co.uk/forums/other...mselling.html
Wiring the engine into the car is easy its wire for wire.The ecu on most astra is in the passenger side wing, i pulled all the wires into the engine bay fromwhen i chopped the wiring for the temp gauge, I wired the V6 in from there.
Picture of the wires before pulling them through
Vectra B Engine Loom ConnectorsX7 Instruments and Diagnostics Connector
1. Red/Blue Fuel pump.Wired to fuel pump.
2. Black Ignition supply to DIS packignition live.
3. Brown/White Diagnostics Data.Conneted to Brown/White.
4. Brown/Yellow Diagnostics Blink.Conneted to Brown/Yellow.
5. Brown/Blue Engine Management Light.Wired to engine management light
6. Gray Traction control.Left disconneted.
11/30/2015 A little astra g v6 conversion info i wrote
http://www.astraownersclub.com/vb/showthread.php/548828-A-little-astra-g-v6-conversion-info-i-wrote 8/11
7. Not Used.Left disconneted.
8. Red/Black SAI Valve solenoid Not Used.Left disconneted.
9. Not Used. Left disconneted.
10. Blue/Red Immobiliser.Wired up to 7 on Transponder Blue connector (Speed signal to Engine ECU (Transponder signal).
11. Blue Coolant temperature sensor.Left disconneted, Running orignal astra g ecu run this.
12. Black/Brown Fuel signal.Left disconneted.
13. Green Rev Counter. Connected to green rev counter with inline pulse converter(off dom on migweb).
14. Not UsedLeft disconneted.
15. black/blue AC Fan Pressure Switch.Left disconneted.
16 Brown/Violet Compressor Clutchleft disconneted
17. Black - Coolant pumpLeft disconneted.
18. Not used.
19. Not Used.
20. Black Auto Box Ignition Live.Left disconneted.
21. Black/White AC High/Low Pressure Switches.Left disconneted.
22. Brown/Grey SAI Pump relay Coil.SAI is part of the car loom, You have to cut the brown relay plug out of the vectra fusebox on theNS strut and connect a 12v and ignition live connection on brown relay, then join the brown/greyfrom the relay to brown/grey in the X7 plug (You dont have to, but the engine will still run but willbe left with ECU light on all the time).
23. Red/Black SAI Pump relay Coil.Left disconnected.
24. Red/Black Traction Control.Left disconnected.
Picture of the X7 plug.http://i22.photobucket.com/albums/b3...c/DSC00019.jpgPicture of the Transponder Blue connectorhttp://i22.photobucket.com/albums/b3...c/DSC00018.jpg
X5 starting and charging loom. Just swap over from orignal astra engine onto the v6, But heres theconnectors anyway.
1. Not Used.
2. Blue/White Alternator D+
3. Blue/Green Oil pressure switch.
4. Black/Yellow Ignition to Reverse switch.
5. White/Yellow Auto Gear Selector.
6. Black/White Reverse Lights.
7. Not used.
8. Black/Red Starter solenoid.
9. Not used.
11/30/2015 A little astra g v6 conversion info i wrote
http://www.astraownersclub.com/vb/showthread.php/548828-A-little-astra-g-v6-conversion-info-i-wrote 9/11
10. White Auto Gear Selector.
11. Brown/Green Oil level Switch.
12. Green Auto Gear Selector.
13. Grey Auto Gear Selector.
14. Brown Oil level switch.
15. Not used.
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The following members like this post:bell astra
02-07-2009, 17:36
hi there m/portwhat clutch setup did u use to mate the f23 to the v6 as i am just about to change my v6 from anf18 to an f23.does the redtop turbo friction plate work in a c20xe flat type clutch and pressure plate.i need to change my friction plate as the splines are different
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02-07-2009, 22:05
The newer shape flywheels are only a 6 bolt pattern and the v6 is a 8 bolt pattern, I used the flattype flywheel and clutch from a C20XE.
I think this link to one the pages MARK T's Website will help alothttp://77.96.230.10/sytemsandsoftwar...F25WithF20.htmHe is a very knowledgeable person and his site has got me out of some sticky situations
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02-07-2009, 23:44
what friction plate did u use as i am using the same clutch setup for my f18 box
cheers
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stuartcurran Originally Posted by M/PORT
The newer shape flywheels are only a 6 bolt pattern and the v6 is a 8 bolt pattern, I used the flat typeflywheel and clutch from a C20XE.
I think this link to one the pages MARK T's Website will help alothttp://77.96.230.10/sytemsandsoftwar...F25WithF20.htmHe is a very knowledgeable person and his site has got me out of some sticky situations
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03-07-2009, 00:26 #5
11/30/2015 A little astra g v6 conversion info i wrote
http://www.astraownersclub.com/vb/showthread.php/548828-A-little-astra-g-v6-conversion-info-i-wrote 10/11
You will need to use the (Early pre 93) flat type flywheel from a redtop (C20XE), You also need touse the c20xe pressure plate to match the flat type flywheel, But you have to use the Calibra turbo(c20let/f28 friction disc to match the input shaft from the f23 gearbox (The f23 and f28 have adifferent number of splines to the f20/f18/f25)
Or just use the whole (C20LET) flywheel and clutchset up, But they use the pot type fly and isheavyer than the flat type (pot 9.5kgs, flat 6.5kgs)
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11-11-2009, 22:22
Heres a picture to show the difference between a c20xe (Early) flat type flywheel and the V6flywheel
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Astra G Van 3.2L V6 & Pulsar GTI-R Mk4v6conversion info.http://www.astraownersclub.com/vb/sh...35&postcount=1
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17-11-2009, 00:12
.................................
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Astra G Van 3.2L V6 & Pulsar GTI-R Mk4v6conversion info.http://www.astraownersclub.com/vb/sh...35&postcount=1
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17-12-2009, 21:59
could i ask a couple of questions?
I have a 1999T Astra G Van 2.0DI.
Aside from the fuel tank issues, do i need to change much other wiring on my van other then theconnections listed above?
Also, I am assuming that the 2.0 DI uses an F23 gearbox so my outlay costs should be minimal?
Any other suggestions/advice for performing the conversion?
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11/30/2015 A little astra g v6 conversion info i wrote
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17-07-2010, 19:09
hi i have a astra coupe 2.2 and am puting a 2.6 v6 gsi engine in it but cant sourt ot the wiring cananybodey help me please
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astra coupe v6
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18-07-2010, 16:37
need 2.6 v6 wiring to a astra 2.2 please helh please
hi im new to aoc and would like some help i have put a 2.6 v6 in my astra coupe 2.2 51 plat butcant work out the wiring on the car can any one out there help me please please can you pleasehelp me
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