Need help with 2.0 and 2.2L engine info for sunbird swap.

[Big P]

Ok, I am aware that the 2.0L 16V DOHC Daewoo head will bolt up to a 2.0L 8V block(like the block in the sunbirds etc.) Now,are the heads interchangeable, and are the blocks the same between the 2.0 and 2.2? Essentially what I was looking at doing is finding a Sunbird Turbo engine block, crank, rods, etc, put the Daewoo 2.0L 16V DOHC head on it and then turbo it. OR.... if it is possible to use the 2.2L block and head by itself(for more displacement) then I might just use the whole motor which brings me to another question.....

What is the difference between the 2.0 and 2.2 heads? How are the heads different? Are the valve sizes different in any way? What about the engine blocks themselves? Does the 2.0 and 2.2 have the same type of engine mount and starter and bellhousing configurations? Any info is greatly appreciated. Thanks in advance for any replies to this thread. Paul Moore

Also, erfinder, if you read this post I would really like to speak with you over the phone. Could you please send your number to me so that I can ask you some questions on this buildup? My e mail is frogs3240@aol.com. Thanks.

[Efratech]

Paul:

Ill keep it very simple.

The main difference between the 2.0 16v C20SED/T20SED and the 2.2 16v C22SED/T22SED is the stroke.

engine : bore x stroke

2.0 16v: 86mm x 86mm
2.2 16v: 86mm x 94.3mm

As you can see obviously the differences are the Rods and Crank.

The head and all other parts in both engines are the same.

Some people say that the 2.0/2.2 is not as strong as the C20GET one...
like Erfinder said in other thread maybe is just quality of iron casting material... but this is just a theory...

There's a guy from the lt3 forums that did this using the C20GET ecu and ignition... you should know him...

here's the link:

http://www.daewootech.com/forum/viewtopic.php?t=649

Efrain.

[Stefan]

Fitting the 2.0L 16v head to the Sunbird block should not be too much of a problem. You'll need to fit all the cam belt tensioners etc. from the 16v onto the 8v block. But, why use the Sunbird block? The Daewoo block has extra ribbing and a main cap girdle. Here's some pics...

8v block


Daewoo (or European Ecotec) block


Main cap girdle


You may be better off getting the complete engine. This is the block I've settled on for my 8v engine, though I'm using a 20XE crank which is stronger and has eight flywheel bolts rather than six.

XE crank



As far as the 2.2 is concerned it has a 94.3mm stroke. I believe it has a taller deck than the 2.0L. A friend of mine is looking into using the 94.3mm crank in his 8v and I'm hoping to get confirmation that the deck is taller. I don't believe that there is any difference in the heads. Engine mounting points and bellhousing are the same as the 2.0L.

If you want a turbocharged 2.0L 16v have you looked at the Z20LET available in Vauxhall/Opel cars in Europe and Holden in Australia? This engine is the same as the Daewoo 2.0L 16v but is already turbocharged with over 200 stock hp.

Z20LET


Hope this helps

Stef

[Big P]

Hmm, I'm not familiar with the Z20LET motor, but I am somewhat familiar with the C20LET from the UK. As far as using the Daewoo engine, I guess it would be better to just find a 2.2L 16V engine and it will drop right in from what everyone is saying. It will make more power due to it's slightly larger displacement and longer stroke. I'd rather use an aftermarket turbo setup so I can make all my own tubing and wiring connectons.My only concern is this. The turbo sunbird bottom end is 'equipped' to hanled the extra stress of boost. If I buy a 2.2L 16V Daewoo motor even with the main girdle, will the internals handle the extra boost pressure, or is that why you recommend the Z20LET? Do I take the Z20LET bottom end and put the Daewoo head on it with the turbo?

[Stefan]

The Z20LET is the successor to the C20LET, so if your familier with that then you'd be fine with the Z20.

According to engine tuners here in the UK, the stock Daewoo/Ecotec crank and rods are good for 250hp and 7500rpm with ARP rod bolts. If you keep the revs limited to say 6500rpm you may get 300hp on the stock parts. More power can be supported with modified cranks and rods. Rods have been known to take 400hp for a while when modified. It's best to swap the rods for H-beams at 300hp though. Arrow and Seanz make rods for these engines. The early XE/C20LET crank has been known to support 600hp for a while when modified though not sure about the 94.3mm crank. There are steel cranks available for these engines but they're ?1000+GBP. You can use the LET pistons as they're made by Mahle and are forged. JE make low comp pistons for the LET too. ARP also make headstuds and main cap studs for these engines.

If using the 2.2 I'd fit as a basic precaution the LET pistons and ARP rod bolts. If you want more than 300hp I'd start looking at aftermarket rods and some work on the crank. The heads on both the 2.0L and 2.2L don't flow as well as the earlier C20XE's/C20LET's cosworth heads. With some work they can be made to flow very well. Take a look at some of the UK engine builders like QED, SBD, etc. who build the Euro Ecotec's and get some advice on what they think the stock parts can handle and exactly what parts they have for them.

Stef