Catera engine compression ratio and engine materials?

RetardedGenius · #1 (**permalink**) 02-25-04, 07:03 AM

Hello Everyone!

This is my first post. I did a quick search but didn't find anything...
Does anyone know the stock compression ratio of the 3.0L V6 Catera engine?
And also, does anyone know whether the factory pistons, rods, and crank material are forged, hypereutectic, cast,...etc?
Thanks in advance

-RetardedGenius-

Speedingpenguin · #2 (**permalink**) 02-25-04, 06:13 PM

Just looked through all the books i've got on the Catera and no info...
You might want to try and look for the information on the Opel Omega.....

**Vesicant** · #3 (**permalink**) 02-25-04, 09:53 PM

I know most of these figures....

Compression: 10.0:1

Now, it says the block is Cast iron, and the cylinder head is Aluminium... im very much assuming that it has aluminium pistons BECAUSE it is a high revving engine and needs less weight. Rods are bound to be iron, as for the crank... im assuming iron too. Most likely cast.

http://media.gm.com/division/cadilla...ra/00specs.htm

alvarofue · #4 (**permalink**) 02-26-04, 11:44 PM

On this page you can find a lot of info from the engine (the euro version). You can see others engine types sold in europe too.
Really cool pics.

http://babelfish.altavista.com/babel...p=ja_en&tt=url

RetardedGenius · #5 (**permalink**) 02-29-04, 07:01 AM

Thanks everbody

I seached thru the web for a while and had an impossible time finding any info on this engine.
At 10+:1 compression, i'm definitely gonna have to end up replacing those pistons if i go forced induction.
Thanks again guys

Speedingpenguin · #6 (**permalink**) 03-01-04, 04:01 PM

...your also gonna have to end up making a forced induction guide for us ;-)

**Vesicant** · #7 (**permalink**) 03-01-04, 05:56 PM

I certainly wouldnt mind a 12 second Catera

dpligocki · #8 (**permalink**) 05-21-07, 01:42 PM

I have been reading that Omega MV6 models in europe have 10.8:1 compression ratio. I thought this was the reason cateras preferred premium fuel. How come in the US and Canada all specs say 10.0:1? Are they different?

Here is a link: http://www.carfolio.com/specificatio...car=74932&Opel

Po Pimp · #9 (**permalink**) 05-21-07, 02:31 PM

To do forced induction on this engine you are going to have to get pretty creative. The rear two cylandiers already overheat. Not sure if there is a way around the stock water pump to provide more flow. Maybe different bearings or impellors. I guess you could say lower thermostat but I jsut doubt that will have an effect on this area. Without some customization you will most likely melt these two pistons where they stand. Additionally the stock connecting rods are very narrow and depend on the splash method for oiling them. Saab 3.0L rods are you best and perhaps only real chance. They have oil spirters built in and they are steel to my knowledge.

The higher compression I believe (but am not sure) is due to them decking the heads further. I could be wrong about this. Have found no real information regarding this, the above is simply a guess.

86mmx86mm BorexStroke
32mm inlet
25mm exhaust

To my knowledge Jeffery G is correct on all the materials used.

elvin315 · #10 (**permalink**) 05-21-07, 02:43 PM

Straight from the horse's mouth.

2000 Catera specs:
http://media.gm.com/division/cadilla...ra/00specs.htm

2000 Catera Sport specs:
http://media.gm.com:8221/division/ca...ort_specs.html