1.6L - 2.0L blocks

[jhill98]

I'm currently in process of building an engine for my car, but I have a few things I'd like to get accomplished on the car while I'm working. Flatbedding the car to its destinations a couple times would pay for a junkyard engine with 60-75K on it.

My car I'm building will have a C20GET in it, but I can pick up the 1.6L (74hp) SOHC from a Pontiac LeMans CHEAP, like they want to give them away. I know that the transmission side of the equation will work. Yes, I know it will be like a 3cyl Geo Metro with 4 Linebackers in it SLOW, but i'm just looking to get the car rolling.

My question, Is the 1.6L block and the 2.0L block the same size physically and the differences are the finished bores? 3.11" vs the 3.39"? Or is the block also shorter timing cover to transbellhousing?

If was hoping to be able to swap the 1.6L in and take the car up to the shop to get the sunroof and headliner fixed and get all the other little issues taken care of.

I can then pull it and swap in my complete 2.0L turbo engine, and put the 1.6L back into use in my other car.

I was hoping since you all use the same blocks as the two engines I'm talking about you could answer the question without me having to purchase one and get it in there and go. That isn't going to work.

Oh, the car is a GM N-body Grand Am, and I have 2 of them that came stock with the C20GET engines. One is an automatic (my first project), and the other is a 5sp.

I have a harness out of an '88 Sunbird with the 1227748 ECM, which will work with the TBI/Distributor 1.6L, 1.8L, 2.0L

jhill98

[DomWoo]

the 1.6 and 2.0 are more different than alike. isnt the 1.6 block Cast iron and the 2.0 block aluminum? you should beable to get it to fit but i dont know how the mounts are on the older cars so that might be your only issue

[jhill98]

No, the 1.6 and the 2.0 both have Cast Iron blocks. Aluminum 8 valve heads and the same transmission bolt pattern.

I have 2 - 2.0L cast iron turbo blocks bare on the garage floor. One for an Automatic transmission and One for a manual transmission. There is an extra amount of casting under the starter mount on the manual blocks for a bolt into the transmission.

Just wondering what the physical difference is on the outside of the block, length, motor mount (sides of block) placement, etc.

jhill98

[Efratech]

Just wondering what the physical difference is on the outside of the block, length, motor mount (sides of block) placement, etc.

Yes, both engines are totally diferent in size, but the 2.0 (N/A) was also fitted in the lemans, so i dont know if the base for the left engine mount (near the timing belt) on the 1.6 lemans is enough to fit on the GrandAm chasis. If that mount base was the same used on the 2.0 lemans it should bit.

Woohoo, the aluminum blocks are from the 2.2 chain driven ecotecs.

Efrain.

[PrecisionBoost]

Yes..... the 1.6L will fit in just fine.... the only difference is in the length of the front engine mount.

The 1.6L is slightly shorter ( about 3/4" if I remember correctly ) but the 1.6L lemans mount is longer to accomidate.

You should be able to find a Lemans with a 1.6L pretty easy so it's just a matter of spending 5 minutes at the scrap yard pulling the mount off.

I think all the 1.6L engines were TBI so your 88 Sunbird harness should work just fine.

Tom ( 360 Dynamics ) has a Lemans with the 1.6L and another Lemans with the C20GET so he would be able to fill you in on any special concerns. ( you might want to PM him to get his attension)

As far as I know this should be a one day job if you have the Sunbird TBI harness allready hooked up.

[PrecisionBoost]

It's kinda strange to hear about someone wanting to drop a 1.6L into their Sunbird/Grand AM but I suppose the old 1.6L engines are pretty easy to find.

I personally would go with the 2.0L N/A TBI if I were you.... they are a dime a dozen as well.... I can get them for as little as $75 at my local scrap yard. (that's with me pulling the engine myself)

Given the old 2.0L 8V N/A was gutless in the Sunbird/Grand Am so I can only imagine the horror of dropping in a 1.6L 8V.

I'm sure it will get you where you want to go but it's certainly not going to break any land speed records

[PrecisionBoost]

Oh, the car is a GM N-body Grand Am, and I have 2 of them that came stock with the C20GET engines. One is an automatic (my first project), and the other is a 5sp.
jhill98

N-Body ???

I allways thought they were J-Body vehicles.

What year of car do you have??

I have a 87 Sunbird GT Turbo and a 2004 Chev Optra 5 ( Daewoo Lacetti with the C20GET's cousin.... U20SED ( 2.0L 16V Delphi fuel management)

[jhill98]

yes, n-body. I know it is strange, but you all should know how strange GM can be at times.

1986 and earlier J-body cars Buick Skyhawk, Olds Firenza and Pontiac Sunbird you could get a TBI 1.8L OHC engine. In the Skyhawk and the Sunbird you could also get a Turbo MPFI 1.8L OHC engine.

1987 - 1990 J-body cars they were across the board switched to the 2.0L TBI and the 2.0L Turbo OHC.

1988 the LeMans shows up on the scene until 1993 with both the 1.6L TBI and the 2.0L TBI.

1988 and 1989 - ONLY Pontiac Grand Am SE (Standard) and LE (Optional) could you get the LT3 2.0L OHC Turbo engine "C20GET".

I have 2 1988 2dr Grand Am SE, 1 Automatic and 1 5sp Manual. Basically I though about a 2.0L TBI, but I also like to tinker a bit, so the 1.6L would be more a challenge.

Jeff

[jhill98]

Did they ever port inject the 1.6 8valve?

Jeff

[PrecisionBoost]

Not to my knowledge.... all the ones I've seen are TBI

I don't know about other countries.... perhaps Efrain might know if a multiport 1.6L 8V exists in the Dominican Republic

[Efratech]

Yes, Daewoo had or still has the 1.5 8v MPFI on the 94 Racer, Cielo, Nexia and Lanos.

the Opel corsa also had the 1.6 8v MPFI.