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'92 940T to '87 245 motor swap?

LC4CARL

LC4CARL

Aero challenged
Joined
Sep 8, 2008
Location
Vancouver, WA
It all starts with an idea that won't go away, right?

Here's the deal: I found a '92 940T, 200k miles, "runs fine." After a mild part-out (Hydra's, etc) the car would be essentially free to me.

Swap the turbo motor to my '87 245 / M47.

As I understand it:

The 2.4 to 2.2 swap doesn't sound too bad. Not sure about finding a 2.4 harness for the 240 though. The 940 ecu may be chipable? Speedo?

http://forums.turbobricks.com/showthread.php?t=230687

The '92 would have the bigger rods, and desirable exhaust manifold.

The M47 would likely die under any abuse and a T5, or other, would be in the future.

The head from my '87 would need to be swapped on along with the distributor. "B" cam OK?

The T motor would come with the oil return and oil cooler stuff.

I'll need a different header pipe.

Will the 940 cooling units fit in a 240?

Wide band O2.

Clutch.

Future:

Swap the 3.31 for a 3.73.

Aforementioned T5.

Boost silliness ensues...

What am I missing? Brilliant idea or not so much?

Thanks!
 
LC4CARL said:
It all starts with an idea that won't go away, right?

Here's the deal: I found a '92 940T, 200k miles, "runs fine." After a mild part-out (Hydra's, etc) the car would be essentially free to me.

Swap the turbo motor to my '87 245 / M47.

As I understand it:

The 2.4 to 2.2 swap doesn't sound too bad. Not sure about finding a 2.4 harness for the 240 though. The 940 ecu may be chipable? Speedo? The later model 240s had LH2.4 so pulling a harness from one of those would be your best bet

http://forums.turbobricks.com/showthread.php?t=230687

The '92 would have the bigger rods, and desirable exhaust manifold.

The M47 would likely die under any abuse and a T5, or other, would be in the future.

The head from my '87 would need to be swapped on along with the distributor. "B" cam OK? Yes. And B cam will be ok

The T motor would come with the oil return and oil cooler stuff. Yes

I'll need a different header pipe. In my +T I used a 940T downpipe without modification other than connecting it to the rest of the exhaust piping. I did not have to shorten it inside the engine bay as some have done.

Will the 940 cooling units fit in a 240? '92 940 intercooler is not drop in. I'd find a 240/740 intercooler and a 240 oil cooler to make things easier.

Wide band O2.

Clutch.

Future:

Swap the 3.31 for a 3.73.

Aforementioned T5.

Boost silliness ensues...

What am I missing? Brilliant idea or not so much?

Thanks!
Click to expand...

Seems like a good idea to me.
 
Yeah...

:grrr:

Thanks for the response.

Would I need a different flywheel? Something about a trigger?

Does the 940 ECU turn the main cooling fan on and off? Or stay mechanical?
 
DO IT! Take all of the needed parts(harness, ECU, EZK, power train, all of it). Then part it out and crush it. Or part it out and donate it to a local that wants to build a brick.
 
Unfortunately the seller decided he did not want to sell the car after all. Kind of bummed / probably for the best anyway. Now I need to find something else to play with this winter.
 
LC4CARL said:
It all starts with an idea that won't go away, right?

Here's the deal: I found a '92 940T, 200k miles, "runs fine." After a mild part-out (Hydra's, etc) the car would be essentially free to me.

Swap the turbo motor to my '87 245 / M47.

As I understand it:

The 2.4 to 2.2 swap doesn't sound too bad. Not sure about finding a 2.4 harness for the 240 though. The 940 ecu may be chipable? Speedo?

http://forums.turbobricks.com/showthread.php?t=230687

The '92 would have the bigger rods, and desirable exhaust manifold.

The M47 would likely die under any abuse and a T5, or other, would be in the future.
Click to expand...

The M47 would be fine if you don't get carried away turning up the boost.


LC4CARL said:
The head from my '87 would need to be swapped on along with the distributor.
Click to expand...

No you'd want to keep the turbo head, and swap in a 240 intermediate shaft to run the distributor.

LC4CARL said:
"B" cam OK?
Click to expand...

No "B' cams suck on a turbo engine, keep the 'T' if you want driveability or get an IPD cam if you'll be winding it up to the moon all the time and wasting a lot of gas.

LC4CARL said:
The T motor would come with the oil return and oil cooler stuff.
Click to expand...

Water cooled oil by 92 afik, so you're adding a heat load to your radiator, and the late 7-9 radiator is wider to account for that.

And besides that crap doesn't fit on a 240 anyway.

LC4CARL said:
I'll need a different down pipe.
Click to expand...

FTFY

LC4CARL said:
Will the 940 cooling units fit in a 240?
Click to expand...

Not really 240 Turbo stuff will be ideal or do a short kit and run your own lines.

LC4CARL said:
Wide band O2.
Click to expand...

Yes

LC4CARL said:
Clutch.
Click to expand...

Yes

LC4CARL said:
Future:

Swap the 3.31 for a 3.73.

Aforementioned T5.

Boost silliness ensues...

What am I missing? Brilliant idea or not so much?

Thanks!
Click to expand...

:uh:

Intercooler and trappings, and a million trips to the junkyard for a little this and that.
 
LC4CARL said:
It all starts with an idea that won't go away, right?

Here's the deal: I found a '92 940T, 200k miles, "runs fine." After a mild part-out (Hydra's, etc) the car would be essentially free to me.

Swap the turbo motor to my '87 245 / M47.

As I understand it:

The 2.4 to 2.2 swap doesn't sound too bad. Not sure about finding a 2.4 harness for the 240 though. The 940 ecu may be chipable? Speedo?

http://forums.turbobricks.com/showthread.php?t=230687

The '92 would have the bigger rods, and desirable exhaust manifold.

The M47 would likely die under any abuse and a T5, or other, would be in the future.
M47 is fine under stock power, I abuse mine at around 200 hp.

The head from my '87 would need to be swapped on along with the distributor. "B" cam OK?
i think the ft head mounted distributor would interfere with a 240 firewall but I may be wrong. If that's the case, you need to swap in the aux shaft from your 240 and run a block mounted distributor. And idk why people bitch about the B cam in turbo applications. It may not have ideal specs but it's definitely more lively than an M or T cam. Especially since you have a manual.

The T motor would come with the oil return and oil cooler stuff.
the ft motor would have the feed/return already done for you.
I'll need a different header pipe.
940 downpipe. Usually modded to fit properly but you can get away with stock.
Will the 940 cooling units fit in a 240?
no, not without modification. And a stock 240 radiator cools just fine.
Wide band O2.
yaaa
Clutch.
depends if yours is worn out. My new NA clutch holds juuust fine
Future:

Swap the 3.31 for a 3.73.
worry about one thing at a time
Aforementioned T5.

Boost silliness ensues...

What am I missing? Brilliant idea or not so much?

Thanks!
Click to expand...
Rip. Your car sold. You'll find another one.
 
Leave it the **** alone and make the 940 your project car until you learn to fix everything you can break.
 
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