Safe overbore on the 1.6?

[normburns]

Got a line on the parts to rebuild the engine, and may have the wife persuaded. What is a safe overbore, 10, 20?

[petrified.rabbit]

from my understanding, the block is the same as the 1.4l, 1.6l and 1.8l..

iirc.. (you should look it up)
the 1.4 as standard..
the 1.6 is a stroked 1.4
the 1.8 is a bored 1.6

are you going with pistons? i thought most "metric" companies go for over bores in mm.. at least in sets i have bought, because i always have to convert them for the local machine shop.

[normburns]

My bad, it is the bearings that are available in 10 over, the pistons are available in standard, and 20 over. Looks like the only extras I would need, that I can think of, would be the head bolts, and a valve job,

Engine Rebuild Kit For

Chevrolet Aveo

1.6 Litre DOHC 4 Cylinder

V.I.N. 6

YEARS COVERED....2004-2005

This Kit Contains The Following New Parts

Complete Engine Rebuild Gasket Set

* HEAD GASKET * VALVE STEM SEALS * VALVE COVER GASKET* REAR MAIN SEAL *

* PAN GASKET* OIL SEALS * INTAKE GASKET * EXHAUST MANIFOLD GASKET * & MORE *

Main Bearings

Rod Bearings

New Oil Pump

Pistons...OVERSIZES AVAILABLE

Rings

Timing Belt

Available Sizes For Pistons & Bearings

Bearings

AVAILABLE IN..>>

Standard

.010/25mm

.020/50mm

Pistons

AVAILABLE IN..>>

Standard Bore

.020/50mm Oversize

[petrified.rabbit]

that kit seem like overkill.. i would probably get a kit without the pistons/head gasket and then order some higher compression oversize pistons..

I would get something like 1-1.5 mm larger.. maybe even 2mm.. and then get a cometic head gasket, get my compression to 12.5:1 and then use midgrade /premium gas and chip the car..

[normburns]

well, so far, this is about the best deal I have found. Parts for these things, at any sort of a decent price has been eluding me. Regarding the high compression pistons... yeah, that is how I think too. She would not consistently run mid-grade, or premium. She would run 87, and then gripe if it did not run right. I figure if I do it this way, add a water pump, and I should be in good shape under the hood, for a while.

[normburns]

found another kit, minus the pistons. with the savings on the kit, plus the savings on the machine work, I will be able to have it balanced. I will be getting the head vatted, and a 3 angle valve job, and having the head resurfaced, and the block decked, which should give me a bit more compression. I am figuring that I will see more benefit from the balance and the compression increase, than I would from an overbore.

Does anyone have any onfo on the clearances between the valves and pistons... is resurfacing the head and decking the block a feasible option?