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Can anyone recommend a turbocharger for an Astron II 2.6L? I am looking for around 8-15PSI and the least amount of lag possible. I currently have a Garrett AiResearch M10 that I got for free off a Pulsar ET Turbo. it has a T2 exhaust flange, A/R .47 hot side and A/R .48 cold side. I think the stock ...

http://cottees.net/images/2021/11/11/DSC00487.jpg I used some modelling clay to get the shape of the inside of the pipe I am wanting. http://cottees.net/images/2021/11/11/DSC00489.jpg Trimmed the metal support to make it neater. http://cottees.net/images/2021/11/11/DSC00493.jpg The metal support be...

What is wrong with an Astron II from an auto Sigma? I have an auto Sigma GN and want to convert to a jap 5 speed.

I have made a quick metal version of the adapter. It still needs a lot of changing to get it right.

http://cottees.net/images/2021/11/11/DSC00461.jpg This is what I am starting with. http://cottees.net/images/2021/11/11/DSC00465.jpg Without the carbie and fuel pump. http://cottees.net/images/2021/11/11/DSC00466.jpg Now without the manifold. The left stud that the fuel pump used will have to be re...

Here is my build plans. They are in no particular order. Pretty much they are going to be done when I can afford it, or if I can get something cheap, then it'll be done next. Build Plans: - Magna Head (M4) swap : Done! Swap Sigma Astron II head for a Magna head. Swap done with an M4 head. - Get a M4...

From the research I have done, it looks like a Starion wheel hub will fit a GJ-GN Sigma strut. The reason for thinking this is that they both share the same bearing kit from GBC "GBK0214". If it is right, then it might be easier and cheaper to source just the hub from a Starion as an upgra...

I have done some measurements and calculations and it would be possible to take the complete running gear from an EVO IV, and put it under a Sigma. it would be a very tight fit. for the rear diff, there would be 3mm spare either side. It would be possible if you roll the guards. The EVO IV is also h...

I have done measurements for the JZs (from technical drawings, and knowing bore size), and the 2jz would be a very tight squeeze, and either a lower crossmember or bonnet hump would be needed. 1jz would still be tight, but is shorter than the 2jz. On both, i might need to move the radiator forward. ...

AWD conversion would be worth a try. How many AWD Sigmas have you seen? It would just be something different. That is one reason why I would like to put in a 1JZ into my Sigma. That, and it is already a RWD engine.

Has anyone done the measuring to see if the 4G63 could fit into a Sigma if it was put in transversely?

The bell housing adapter looks good, and cheaper than Castlemaine Rod Shop's 4G64 > W58 adapter (which I think is for wide blocks anyway). Shipping for that would be expensive, and that auction doesn't ship internationally. Is there anyone in Aus that can/would fabricate things like that?

From what I have read in my research, most RWD 4G63s are wide, FWD/AWD are narrow. For anyone interested, and are in NSW, there is a VR4 front cut for $1,999 on ebay at the moment. The link is below. http://cgi.ebay.com.au/Mitsubishi-Galant-VR4-Halfcut-4G63-Engine-suit-Galant_W0QQitemZ180341733266QQ...

So a 5 sp jap trans will bolt straight up to a dohc 4g63 (narrow block iirc)? How much do those trans in for? Any one know the model number etc for that trans? Sorry for all the questions, i am planning an engine swap for my Sigma gn, and still tossing up between a 1jz and a 4g63.

The ball joint on the Sigma control arm might also bolt to the S13 Knuckle Spindle.

You could use the lower arm, ball joint and the steering arm from the Sigma, and the strut from the R31. If the S13 arm, ball joint and strut all fit, it would be easier to get coil overs for the S13. I think the S13 is 4 stud, S15 is 5 stud. I personally would like to stay 4 stud to use Sigma mags ...

This website is selling bolt in Coilovers for R31s, and could be suitable for installing into a Sigma.

http://www.customgarage.com.au/products.html

Another option for the top of the struts is to re-drill the top of the strut tower to allow the strut to bolt straight in. It would also allow for an upgrade path to after market coil overs.

Since I'd be using the steering arm/knuckle arm from the Sigma, the tie rod end would line up perfectly. If the strut mount is changed over for a Sigma strut mount, the Sigma springs would fit at the top, but an adapter would need to be made for the lower seat for the springs. Either that or mod the...

I am not sure if anyone has tried putting R31 struts on a Sigma. Curiosity got the better of me when I was at U-Pull-It yesterday. it looks like the steering arm from the Sigma will bolt up to a R31 strut with a small modification. Either the sleeves on the Sigma steering arm will have to be taken o...