[Ecotec] engine block machining Question

[timbo292832]

a buddy of mine recently did a rebuild of his Ecotec for his VS

Most of the parts are new including the Pistons
however he didn't get the engine block machined

i was wondering what kind of effect this would have on the engine
the engine originally has done 308,000 Kms
his cars running fine after the rebuild (Stock Rebuild)

i am interested in rebuilding a Ecotec engine myself
but i was under the impression that it is critical that you get the engine block machined
especially if you change the pistons ?

 

[Wombles]

You would need to measure the round of the cylinder to see of its withon spec.

 

[NitroAl]

Machining the block is cheap when compared to the cost of parts so if there is any doubt at all get it done! A properly machined and assembled engine will always perform better!

 

[Immortality]

It depends on how much wear there was in the bores, sometimes you can get away with a simple hone. I've seen literature that says you don't even need to do that.

Do a compression test, that will soon show how the rings have seated

 

[timbo292832]

Thank you
i will start with a compression test
any idea how much it will cost to machine the block ?

 

[chargedvx6]

You should be able to get a bore hone, deck, cam bearings supplied and fitted and balance for around $650. If you havent' changed pistons or rods you could give the balance a miss.

Also you may want to throw the balance shaft out and tap and plug the oil feed to it. Will be a tad rough around 1800rpm but you rarely stay at 1800rpm so no biggy imo

 

[rRRumblers]

My Brother is an Engine Rebuilder, Been so since 1978. He knows a thing or 2 'bout any engine. His Name is Tom operates a 1 man show, small engine reco centre in Lipton Drive Thomastown(next door to Centreline suspension), Company name is Maxitorque. Don't know the Tel # (only have his mob) however you can Google maxitorque automotive victoria and i'm sure you'll get his number.