I had to cut and smash a little bit to get it to clear. Not real fancy work I know, but it's what I could do at the time.

 

Keep an eye on that for leaks. I'm a bit concerned about the radiator cap - the 2nd gen is at an angle in stock form, and it appears the radiator cap is at a matching angle to make it parallel to ground.

I'm concerned about it not properly activating and sending overflow to the overflow tank.

I've also considered the possibility of cutting off the upper tube and cap mount to fit vertically. Is the radiator aluminum?

 

There are two caps, one on the radiator, not original, and one on the t stat housing. It will overflow if necessary.

The radiator is an OEM replacement from when it was in the FC.

 

Well the car was kinda sputtering so I pulled the fuel filter off to check it out. This is what I found. Not good! Going to have to drop the tank and clean it and seal it. Kind of sucks but at least it will be like new when done!

Jacob

 

Jacob,

How much of your original car and wiring could be kept in order to minimize the changes necessary but still allow the s4 engine to run? I'd like to keep the radiator, add my dizzy to the s4, keep the fuel pump, etc. Mine is an 85 gsl-se. Having gone through the swap, do you think you could have done less cutting and splicing?

 

If you use the distributor that would save you the coil wiring. Other than that I don't think you can "skimp" on any other wiring.

As far as wiring goes, this is the simplest swap in a 1st gen. I wouldn't call it simple, but it is less complicated than Turbo swaps.

 

The wiring I did is 100% necessary to run an S4 in the 1st gen Chassis, if that is what you are wondering.

 

Okay, thanks for that. I've seen some other threads about swapping a turbo S4 into a GSL-SE, but not too many on the S4 n/a engine. I want to change as little as possible and I want to keep the wiring for the 85 as I am rebuilding my GSL-SE block for later down the road. I just happen to have an 86 n/a motor that I can put in, but would like to keep my options open. I may just end up doing the s4 intake swap and keeping the 85 motor that I am currently running. It has poor compression and is on it's last legs. I think it has quite a few miles on it, don't know how much longer it will last.

 

I thought about this after but I think it is possible, to avoid wiring. Swap all the external parts from 85 motor to S4 short block. Use 85 front cover and oil pan, just use the good block you have from the 86. Not 100% sure if this works but I'd be worth looking into.

 

Hypothetically, I decide to keep the dizzy and setup the ECU to run the INJECTION only.

the ECU needs signal from CAS to fire the injectors.

will 1st gen dizzy work with the 2nd gen ECU?