190 replies to this topic

[Mopeytitan]

Should say it wasn't far away

[TFD]

Keep an eye on this one 

 

Whats the weight difference vs. Z22SE?

[Mopeytitan]

I think there's very few kilos between a z28 and a z20 which isn't massively far away from the weight of a sc z22. But don't quote me on that

[Ormes]

Will watch with interest

[siztenboots]

I have the Motronic codes for the Z28net , so it would not take me much to get an open tune. Its got a very interesting closely packaged pair of exhaust manifolds.

[Mopeytitan]

I'm hoping it will fit when the engine gets here ill make some very basic measurements of the engine and then of the z22 and see if any modification will be required to the boot etc. I'm not bothered if i do need to modify it will just be good to know.

 

another issue I've come up with is flywheels. the v6 has a 8 bolt flywheel where as the z22 uses a 6 bolt. will i be able to use either a lightweight z28net flywheel (6.7kgs over the DM 12.4kgs) with the f23? I'm going to get an adaptor plate made up i think to get the f23 to fit if it doesn't bolt on. 

 

I'm getting impatient waiting for the engine so can't do any checks! just firing things out there. My hope will be:

 

1. engine fits!

2. can get the f23 fitted so i can keep all drive shafts gear shift mechanisms etc.

[siztenboots]

c20let used a 8 bolt flywheel , but also can use f23

this is a saab auto, missing the 6 bolts holes , same block

[Mopeytitan]

c20let used a 8 bolt flywheel , but also can use f23 this is a saab one , same block

Cheers mate. Been looking at pics of the z28 flywheels and they look huge!

[Rosssco]

 

1. engine fits!

2. can get the f23 fitted so i can keep all drive shafts gear shift mechanisms etc.

 

1. Engine should fit ok - seen pics of a very similar block in an Elise.

2. The F23 will NOT bolt up. You will need some form of adaptor plate and suitable flywheel.

 

You could get someone like TTV to create some form of hybrid lightweight flywheel if they have designs on both the F23 compatible unit and one from a Vectra VXR unit..

[Mopeytitan]

I am hopefully that it should fit as that guy put a Rover v8 in the back. I guessed I'll need to make an adapted just got to decide out of what... In think 10mm steel? Or ally but think an ally one would need to be pretty thick?

[Rosssco]

Not sure on adaptor plate requirements, but minimum 10mm thickness will be required..

 

Have a look below for the guy putting essentially the same engine (GM HFV6 in NA) in an Elise.

 

http://www.lotustalk...-2x-fun-102052/

[Mopeytitan]

Not sure on adaptor plate requirements, but minimum 10mm thickness will be required..   Have a look below for the guy putting essentially the same engine (GM HFV6 in NA) in an Elise.   http://www.lotustalk...-2x-fun-102052/

Cheers Rossco I'll have a look at that. I was thinking 10mm will probably be required.

[ChrisS1]

Interesting option you're thinking of.

 

what kind of power can one of these be easily/cheaply increased to? Or are you doing it more for the enjoyment and challenge of the engine swap rather than ultimate performance?

[Mopeytitan]

Interesting option you're thinking of.   what kind of power can one of these be easily/cheaply increased to? Or are you doing it more for the enjoyment and challenge of the engine swap rather than ultimate performance?

Power wise I know the z28net can be taken up to 400 before internals need doing. But just a remap will take them from the 255/280 to around 300. I've got the A28net from the insignia so standard it 325 which with a remap will see around 340. But with the build it'll end up having a rebuilt turbo with bigger compressor and a 3" exhaust so hope to get around 400 which in the insignia 400bhp the engine produces around 406lbft of torque. That's going to be the biggest issue reigning in the torque. But not chasing the figures as much just want to be the first to shoe horn the engine in the back I've got a welder fabricator friend who will be doing all the structural welding for me, pretty much for free as he wants to do it for the fun of doing it aswell.

[ChrisS1]

Excellent sounds like as good an excuse as any!

 

I'll be watching with interest.

[Mopeytitan]

Also planning to run a chargecooler as its all plumbed in for the sc so will just need to get a large enough chargecooler to keep it cool. I've been chatting to haggi and also planning to put a fire suppression system in as I can only imagine the amount of heat that will be produced by the engine and turbo. Hopefully the raised boot kid will help with space aswell

[Nev]

Audacious plan!

 

You are right to think that 400 ft/lb of torque is quite a lot for a VX. When I took you out last year we only used 340 ft/lb.

Edited by Nev, 11 March 2016 - 10:46 AM.

[Mopeytitan]

Audacious plan!   You are right to think that 400 ft/lb of torque is quite a lot for a VX. When I took you out last year we only used 340 ft/lb.

Yup it should be fun! Might be able to give you a run for your money Nev!!

[Nev]

 

Audacious plan!   You are right to think that 400 ft/lb of torque is quite a lot for a VX. When I took you out last year we only used 340 ft/lb.

Yup it should be fun! Might be able to give you a run for your money Nev!!

 

 

That would be nice however I might be tempted to flick my little switch !

[Mopeytitan]

So a little update on this... Well where to start! Got my A28 delivered, pulled a Z22 with F23 gearbox out of a neighbours vectra. Got the F40 and transfer box off the A28 then pulled the F23 of the Z22. Started making my template of the F23 out of Perspex as the boot pattern is slightly different. Plus the actual bell housing is 10mm smaller diameter than the F40. Once I'd roughly drawn my template with the drive shaft centre point and spigot centre point used as my datum. Placed it up against the v6 and it will not work! Bugger! If you were to try and use the F23 with the start motor cut out in the correct place the drive shaft will need to be run through the block or part of it! So next of my plan was pull the transfer box off the F40 and I'll use the insignias gearbox and custom everything to fit. Well once the transfer box was off I found out the bellhousing is different than on the vectra so it can only take the transfer box! So my next plan is to use the vectra vxr box and either swap the bell housings across as apparently the insignias internals are stronger or use the gene teas gearbox and hope it's doesn't break. A long weekend of stripping stuff down to find none of it will work together as planned! But don't worry this will happen!!!... Eventually