2g/1g compatible

kwAlk23 · 10-05-2008, 10:50 PM

Alright, I have a 98 gst, It was wrecked pretty badly. I am picking up a 90 awd. Now to swap the motor to the 1g what all would have to be done?

interex · 10-05-2008, 10:52 PM

It's possible you can see if you do a search. Would I do it? No... too much work if you ask me.

interex · 10-05-2008, 11:05 PM

It's possible, What do you think a 6 bolt swap is?? They put the 89-92 4g63 engine in a 92.5-99 car. You can reverse this and go from the 2g to the 1g but I think you'd be better off finding the 6 bolt that goes in the 90 and doing it that way.

ElectricBlueTSi · 10-05-2008, 11:13 PM

The swap should be relatively easy. Installing a 1G engine in a 2G is actually very common so the other way around would also be. Motor mounts are one of the biggest things you need to worry about.
http://www.dsmtuners.com/forums/newbie-forum/299892-2g-engine-1g-no-front-motor-mount.html

kwAlk23 · 10-05-2008, 11:42 PM

yeah i don't get how it would be hard? All i would need is the mounts and a 90 CAS correct? Do the 2g CAS's plug into 1ga's?

EDIT: forgot to mention in the original post that the 2g has a 6bolt swapped into it

interex · 10-06-2008, 12:03 AM

lol, man... then do the swap. You were making it sound like you were going to put a 7 bolt into a 6 bolt car.

nlzn · 10-06-2008, 01:05 AM

http://www.magnusmotorsports.com/tech/1gina2g.pdf Hope that helps!

kwAlk23 · 10-13-2008, 10:16 PM

Would i need to pickup a 90 CAS? The motor is a 6bolt block on a 2g head with a 98 CAS on it at the moment. Also would i need to pickup a 1g powersteering pump? A/C Compressor? The car currently has all the 2g accessories on it. Thanks guys!

xreaction122 · 10-16-2008, 09:29 AM

im pretty sure the 2g has 3 tranny mounts and the 1g has 1

that would be an issue

wont_luz · 10-16-2008, 12:03 PM

Yes you would need the 90 cas, 1g power steering pump, 1g alternator, but I'm not sure about the a/c, I would just use one from a 1g, or actually I don't use a/c, so I wouldn't put it back in. You also need the 1g starter plate.

kwAlk23 · 10-19-2008, 12:08 AM

Also, What problems would i run into with the wiring harness plugs? Anyone happen to have a pin out of the 1g wiring harness as to where all the plugs go. Searched for a pin out of all the wiring harness engine electrical plugs and only found it for a 2g, if anyone wants to help me out on that i'd appreciate it a whole lot

DSMDemond · 10-19-2008, 10:09 AM

The tb are different.The mafs are different.You should be able to use the 1g sensors if you still have them.Dont the 2g use absolute manifold pressure sensors?