mcg
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| posted on 26/8/12 at 10:17 PM |
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Vauxhall Engine change of direction
Just thinking out load here.
For a couple of reasons, I am thinking of replacing my 8v 20NE Vauxhall Engine. It is currently mated to a type 9 gearbox. I was wondering if other
vauxhall engines could be used with the bell housing and type 9 as a straight swap?
As an example:
VAUXHALL OPEL OMEGA VECTRA 2.6 Y26SE V6 MANUAL ENGINE ONLY 80K | eBay
I would be looking for a straight forward(ish) swap, and to utilise all ancillaries including ignition system and ECU from the donor.
My F27 is a widebody so there is quite a bit of space in there. One of the reasons for the change is to have a reliable power increase so obviously I
don't want the weight of the new unit to outweigh the power gain. With that said the 8v is pretty heavy!
Red top is also an option, but a quick look on ebay shows the v6's showing at a reasonable price and plenty of them.
Never looked into this before, so not sure if it is as straight forward as this - particularly the ignition / ecu aspects or if I would need megajolt
or similar.
Any thoughts would be welcome!
Cheers!
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ashg
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| posted on 26/8/12 at 10:45 PM |
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saab b204 or b234 turbo. bolts directly to the vauxhall omega box  it will rip a type 9 to pieces though.
Anything With Tits or Wheels Will cost you MONEY!!
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Exocet (Finished & Sold)
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Ben_Copeland
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| posted on 27/8/12 at 07:00 AM |
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The v6 is quite different, your better off with the c20xe or c20let.
Not sure about gearbox but I doubt they are same bolt pattern.
The Saab engine choice is good, but again nothing you have will fit straight on
[Edited on 27/8/12 by Ben_Copeland]
Ben
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loggyboy
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| posted on 27/8/12 at 07:03 AM |
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Pretty much any big block GM lump will fit, they are similar to fords where they kept the same pattern throughout the range.
C20XE (redtop) is the obvious answer - readily available, tuneable, powerful and cheap.
C25/30XE (V6) is possible, but only 25bhp more than the c20xe and quite heavy.
C20LET - turbo power, 200hp out the box with plenty more to be tuned, more expensive and harder to find in good nick.
X20XEV (ecotec) less power than the redtop, but even cheaper and easier to find, you might also find a low mileage one as they were fitted to so many
cavs/calibras/astras.
You could also look at new vauxhall engines but with more complex wiring these can be harder to install.
[Edited on 27-8-12 by loggyboy]
Mistral Motorsport
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ashg
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| posted on 27/8/12 at 02:58 PM |
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saab is the same pattern as the c20let and all the others. ditch the type nine and stick an omega box in if you want to stay with vauxhall as they
are much more refined than the ford slush boxes.
Anything With Tits or Wheels Will cost you MONEY!!
Haynes Roadster (Finished)
Exocet (Finished & Sold)
New Project (Started)
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Slimy38
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| posted on 27/8/12 at 03:56 PM |
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There's a lot to be said about the old 8 valve engine, have you looked into a bit of NA or even turbo tuning? Obviously the C20XE is the better
base, but I had a lot of respect for my old Cavalier 8 valve. 'Upgrading' to a V6 Vectra wasn't as much of a jump as I expected,
despite nearly 85 extra horses. It seemed like the power delivery was all to get the high BHP and low 0-60, and then stick it on a set of poor gear
ratios.
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mcg
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| posted on 27/8/12 at 07:06 PM |
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Thanks for the replies - plenty of food for thought.
C20XE sounds like the best all round solution.
I wonder if I could do basically a straight swap? I would like to use the ignition and fuelling from the redtop to get a reliable and sorted
(particularly emissions) set up. Will the inlet side fit into a 7 style engine bay? My f27 is a wide body.
And then for the exhaust? Do the headers share the same dimensions?
And then again for the sump? I have a shortened sump on the 8v already- could I transplant it over?
Really appreciate the help.
Cheers
Matt
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loggyboy
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| posted on 27/8/12 at 09:34 PM |
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quote:
Originally posted by mcg
Thanks for the replies - plenty of food for thought.
C20XE sounds like the best all round solution.
I wonder if I could do basically a straight swap? I would like to use the ignition and fuelling from the redtop to get a reliable and sorted
(particularly emissions) set up. Will the inlet side fit into a 7 style engine bay? My f27 is a wide body.
And then for the exhaust? Do the headers share the same dimensions?
And then again for the sump? I have a shortened sump on the 8v already- could I transplant it over?
Beauty of the redtop is that the loom is self contained, so providing you can fit the standard plenum etc under the bonnet, you can use a powercap
which looses the big SFI box, but they still arent the smallest inlet. Twin 40s/45s would be a simple solution.
If you can fit the standard set up in then its effectively just a matter of powering the ecu, fuel relay etc. Can be done with about 4 wires IIRC!
If you can find a DISPAC engine (mainly in SRI 16v cavs) then you wont have to mess around with relocating the dizzy (this can often foul the
bulkhead)
Exhaust will be different, but roughly in the same place, so a handy welder could just try swapping flanges, but a new downpipe would be fairly easy
to get made up if they dont quite line up
Emmsisions would be easy to sort if you run standard setup, even without a cat, I would assume your car is either visible smoke, or having a GM 8v,
aged to suit the emmisions a c20xe will produce anyway.
Sump should be the same, its acctually common to use the 8v sump on the 16v due to having a integrated gasket.
Mistral Motorsport
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mcg
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| posted on 28/8/12 at 09:39 AM |
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This is great info - thanks very much. I feel this approach is definitely achievable so will have a good look around for a red top.
Thanks again.
Matt
quote:
Originally posted by loggyboy
quote:
Originally posted by mcg
Thanks for the replies - plenty of food for thought.
C20XE sounds like the best all round solution.
I wonder if I could do basically a straight swap? I would like to use the ignition and fuelling from the redtop to get a reliable and sorted
(particularly emissions) set up. Will the inlet side fit into a 7 style engine bay? My f27 is a wide body.
And then for the exhaust? Do the headers share the same dimensions?
And then again for the sump? I have a shortened sump on the 8v already- could I transplant it over?
Beauty of the redtop is that the loom is self contained, so providing you can fit the standard plenum etc under the bonnet, you can use a powercap
which looses the big SFI box, but they still arent the smallest inlet. Twin 40s/45s would be a simple solution.
If you can fit the standard set up in then its effectively just a matter of powering the ecu, fuel relay etc. Can be done with about 4 wires IIRC!
If you can find a DISPAC engine (mainly in SRI 16v cavs) then you wont have to mess around with relocating the dizzy (this can often foul the
bulkhead)
Exhaust will be different, but roughly in the same place, so a handy welder could just try swapping flanges, but a new downpipe would be fairly easy
to get made up if they dont quite line up
Emmsisions would be easy to sort if you run standard setup, even without a cat, I would assume your car is either visible smoke, or having a GM 8v,
aged to suit the emmisions a c20xe will produce anyway.
Sump should be the same, its acctually common to use the 8v sump on the 16v due to having a integrated gasket.
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