Turbo 3.1 woes

[Jonpro03]

Well, look at the list of engines and tell me which one you would buy...

[Jonpro03]

Nevermind! Too late!

I already bought the $200 dollar one. I'll be picking it up on monday!

WOOT!  :icon_cool:

[RobertISaar]

hard to argue with cheap, reliable power that shines even more under boost. :icon_biggrin:

[Jonpro03]

Going to have the engine out of the car by tomorrow. The new engine will be here tomorrow so I can get to work

[killinprixs]

Nice pickup!  better start shavin that engine bay!

[Jonpro03]

[Jonpro03]

Tonight's progress:

All of the parts removed from the old 3.1. There are a handful of items that won't transfer over to the 3500 because of differences in the block.
The lower engine mount won't transfer - we will get one off of a gen2 3x00
Passenger dogbone mount won't transfer - we will get one off of a gen2 3x00
A/C compressor won't transfer due to pass. dogbone mount - gen2 3x00
Turbo oil feed line is a different size - will be heading to the hardware store
ICM and coilpack won't transfer - gen2 3x00 with wiring harness
Turbo oil return line won't work - will drill/tap oilpan

Wont fit due to the car:
3.1 water pump will not be used - get heater core lines from 94-96 grand prix
3500 UIM won't be used - Using a 3400 UIM from u-body van to retain egr
3500 fuel rail won't be used - 3400 fuel rail
3500 throttle body won't be used - get 56mm TB from 3400
Throttle body cable mount will be 3100 custom for kickdown cable

Stuff that did transfer (so far)
Oil pressure adapter and Oil cooler
160* tstat
Coolant feed fitting
Driver side dogbone mount
Turbo exhaust manifolds (minus bolts... TOO RUSTY!) Im using both 3.1 and 3500 gaskets.
Alternator mount bracket / alternator

We are off to the junkyard tomorrow as I have a hefty list of things to get. That gen2 3x00 engine mount is going to be the worst. :p

Sorry I didn't snap any pictures. I basically have two empty motors right now and a slew of parts all over the floor.

[Jonpro03]

I got very... VERY lucky today. Earlier last year, I helped a buddy build a megasquirt2 for his camaro. He's going to sell the car now and I GET THE MEGASQUIRT!

YAY ME!

Now I don't have to buy a external crank trigger saving me $150. AAAANNNNDDD I now have unlimited tuning capabilities.

[TGed]

You will find that the 3500 mounts will be different than the 31/34 hundred mounts.  You will need to fabricate some stuff to make do.  The TB situation will be not resolved with just a TB swap, cables will be an issue.  You will need other GM parts to complete that task.  The coolant sensors will need to be addressed.  The lx9 uses a crush sealing washer with a different smaller thread design.  The lower intake doesn't have provisions for the other sensor.  The power steering pump will not work with the setup you have going in.  Will again, need to source another GM vehicle for that.

The rear tgp manifold bolts may not work well due to it being to long, I suggest just picking up studs and nuts with locking washers. 
I highly suggest going with different larger ex.manny's, those stock ones even extremely ported will be restrictive and then be prone to cracking due to the extreme porting. 

I have a 3400 Van UIM AND a 3400 Grandam LIM here...  I am willing to part with it if you are interested.  Shoot me an offer, I am located in MI.

[RobertISaar]

the coolant sensors shouldn't be an issue, GM went from 2 sensors, one 2 wire, one 1 wire to the single 3-wire setup. luckily, the 3 wire is more or less a 2 wire sensor with the "sender" capability being the third wire. so, just chop off a connector and solder/crimp on the old ones.

[Jonpro03]

You will find that the 3500 mounts will be different than the 31/34 hundred mounts.  You will need to fabricate some stuff to make do.  The TB situation will be not resolved with just a TB swap, cables will be an issue.  You will need other GM parts to complete that task.  The coolant sensors will need to be addressed.  The lx9 uses a crush sealing washer with a different smaller thread design.  The lower intake doesn't have provisions for the other sensor.  The power steering pump will not work with the setup you have going in.  Will again, need to source another GM vehicle for that.

The rear tgp manifold bolts may not work well due to it being to long, I suggest just picking up studs and nuts with locking washers. 
I highly suggest going with different larger ex.manny's, those stock ones even extremely ported will be restrictive and then be prone to cracking due to the extreme porting. 

I have a 3400 Van UIM AND a 3400 Grandam LIM here...  I am willing to part with it if you are interested.  Shoot me an offer, I am located in MI.

Are you SURE that the power steering pump wont work. Everybody says that it won't bolt up. But it looks to me like it will. Is there another that will?
I won't be using tgp manifolds... too small. I'm going to use 3400 manifolds and block the DP, weld a T4 flange on the crossover and fab up a downpipe. At least, that's the plan for now... If I don't like it I'll just build an exhuast.
I've already bought a LP3100 UIM and fuel rail from a 2000 malibu, a 56mm TB from a Montana, a TB cable bracket from a 94 grand prix complete with kickdown cable mount :icon_razz: and ICM mount bracket. wot-tech sells a CTS adapter.
I'm going back tomorrow for 3400 exhaust, 94 gp heater lines, passenger side dogbone mount, motor mount, and a/c compressor.
As for the motor mount, that's something I hadn't counted on and I'm working on it. I'm going  :icon_sad:
I cant think of anything else right now...

[killinprixs]

i believe you will want PRE- 3400 exhaust manifolds, the flow cant be reversed on late model 3100/3400, you need small port exhaust manis

[TGed]

Tip- Use 2 front lx9 ex.manifolds.

[RobertISaar]

Tip- Use 2 front lx9 ex.manifolds.

IIRC, those are the best flowing(and looking :icon_biggrin:) manifolds you can get ahold of before going to the Gen4 660s.

[TGed]

They are, but some fabrication with a BFH is possibly required....  I just said screw it and made my own somewhat equal length headers.  I think 3" on each header for the port closest to the driver side is the longest due to the way I had to turn/flow it.