Parts compatability between Z20NET/B207 and Z22SE

Hi guys,

I'm wondering which parts if any from the Z20NET will fit the Z22SE.

The parts I'm most interested in being the inlet and exhaust manifolds. I've been doing a bit of research, and from what I could find, it looks like they should fit, although whether or not there is physically space for the turbo in the engine bay is still up for debate. it would ofcourse require a custom made downpipe, as I can't really see the Vectra / Signum / Saab part fitting. For one thing, the standard Z20NET downpipe has a massive 'cat on it right near the turbo. I'd much rather have a custom downpipe made up, going to a 200cpi cat in the place of the standard cat, under the car.

My thoughts were along the lines of fitting the exhaust manifold and turbo from the Z20NET onto my Z22SE, and using Peter Munckhof's OBDTuner firmware on the standard ECU to get it running properly. I've been talking to Peter, and it seems that it should work, but I may lose some functionality, such as the trip computer, T/C and of most concern, the ABS. But this is just speculation, as we cannot be sure; The software has only been tested and used on the VX220 / Speedster.

The OBDTuner setup would allow me to get a very good fuel map, in theory much better than any current tuners like Courtenay are capable of doing, as they are dealing with the limitations of the standard software. (They would just change the fuel map, correct? Or do they change the software on the ECU aswell?).

With OBDTuner, I would also have the option of using a larger throttle body from one of the other Ecotec engines, and larger fuel injectors. I'd also thought about using the standard Z20LET intercooler from an Astra GSi, as this should fit straight in, assuming I can get it all plumbed up.

My thoughts are not to chase huge power figures. It just seems a much easier way of getting more power than staying N/A, whilst keeping the car very drivable and with room to wind the power up in future if I should so choose.

The car is my commuter, but after doing my first trackday earlier this year, I will definitely be doing more trackdays!

The brakes have already been upgraded with the GSi 308mm setup, along with plenty of air ducting to the brakes.

I'm wanting to do it this way, as it seems like the cheapest option, what with being able to easily get hold of 2nd hand Z20NET manifolds / injectors / turbo's etc, rather than having to blow thousands on a "kit". Why pay for bespoke, special made parts from the likes of DBilas, when there are OEM parts that will bolt straight on and do the job!
 

evocarlos

Stupid Bollocks
Staff
hey
z22se = 147 hp @ 5800 rpm 203 N·m (150 lb·ft) @ 4000 rpm
z20net = 173 hp @ 5500 rpm 265 N·m (195 lb·ft) @ 2500–4000 rpm Mid-pressure (B207L)
b207R = 207 hp @ 5300 rpm 300 N·m (220 lb·ft) @ 2500-4000 rpm High-pressure

dependent of the turbo you get b207l (low) or b207R (high) i know the b207l is pretty restricted and for 173 hp over the standard 147 hp of the z22se a waste of effort if you could get the b207r turbo that has some more room to play up to 210 hp

you then have to think about your 10.1:1 CR with the z20net having 9.5:1 somthing will have to change there or run lower boost

the z20net engine has some differences over the z22se
piston oil squirters
8 bolt flywheel
sand cast head
cams
ex valves
sump
86mm x 86mm bore and stroke
crank trigger wheel
oil cooler
spark plug coils

z22se
6 bolt flywheel
lost foam head
86mm x 94mm bore and stroke

bolt pattern for both inlet and exhaust are similar and should fit each other

well my thoughts on the odb firmware are
its nice that someone took the time to do it and make it available but at 800 euros id have to give it a pass and just buy an aftermarket ecu kit for under 500 :)

theres alot of this info covered on the forum and even a astra z20net engine swap might be worth searching that :)
and a z22se/z20net hybrid

personally i slapped a supercharger on my daily driver will find out soon what its producing power wise
even that was not an easy task :)
 
Hmm. I'd guess that the z22se's 6 bolt flywheel can cope with more power than stock, yes? Merely an issue of not being swappable between engines?

Also, surely you'd get more than 170bhp from the b207l turbo, as you've got an extra 200cc over the z20net.

With the amount of parts that i'd need from a b207, it might just be easier to do an engine swap.

Would I be able to put a z22se crank into a b207 motor?

If I wanted a 2L turbo I could easily buy a zlet conversion. I want to do this not just because it could/should be powerful, but also lighter and a bit different to a zlet.
 

vocky

Staff
the bolt pattern is identical for the inlet and exhaust manifolds, but you will need to create a turbo oil return to the sump.
 

Dave Gilbert

Senior Member
So someone has thought of this before

I wonder why nobody has gone through with it?


I know this is a old thread but found it searching for my thread.
 

evocarlos

Stupid Bollocks
Staff
Im not using it, im hopeing a z20net ecu, webcon trigger wheel and a custom remap will do the trick(HOPEING is a big hopeing hahaha)
z22yh crank 60-2 trigger wheel :)
 

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Dave Gilbert

Senior Member
That means pulling the engine snd buying a crank(iv got the trigger wheel kit)

I cant go pulling an engine on the road, the neighbours allready hate me.
 

Dave Gilbert

Senior Member
Maybe maybe, but that would be a full build spare engine, pull it 1 day and fit the new engine the next.

But like I say its still not a 100% job so I dont want to go to silly n it not work.

Its a case of getting it running first n say yaaaaaaaay it works,

Then what can we do with it, well I know most of phase 2 would be yh crank, forged rods n pistons, polish n ported head, b207r turbo(which I beleive is a t14 or something like that) with green injectors and biggggg front mount and a remap. Should see good figgers from that.
 

evocarlos

Stupid Bollocks
Staff
Maybe maybe, but that would be a full build spare engine, pull it 1 day and fit the new engine the next.

But like I say its still not a 100% job so I dont want to go to silly n it not work.

Its a case of getting it running first n say yaaaaaaaay it works,

Then what can we do with it, well I know most of phase 2 would be yh crank, forged rods n pistons, polish n ported head, b207r turbo(which I beleive is a t14 or something like that) with green injectors and biggggg front mount and a remap. Should see good figgers from that.
t19 + dekkas (60's) :)
 

evocarlos

Stupid Bollocks
Staff
only issue is the fly wheel on the net is 8 bolt and the z22se is 6 bolt so if you can get the torque plate for the net to fit the torque converter of the af23 then i think it might work
the next issue is the auto box ecu and making it work
 
only issue is the fly wheel on the net is 8 bolt and the z22se is 6 bolt so if you can get the torque plate for the net to fit the torque converter of the af23 then i think it might work
the next issue is the auto box ecu and making it work

thanks Evocarlos and how making the ECU work? Z20net is manual harness but the Z22SE is with AF23 is auto harness . please advise.
 
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