Oversize Everything

**gearspeed** · August 11th, 2013 01:50 PM

This is what shops overseas told me and some shops here said to me that if I go higher horsepower on a turbo I should oversize everything.
Is this true that I have to oversize everything on the engine?

Thanks.

**uls** · August 11th, 2013 02:01 PM

syempre coz high boost pressure puts a lot of stress on engine parts

stock N/A engine parts weren't made to handle high boost pressure

you need stronger everything

stronger pistons, stronger crankshaft, stronger connecting rods, stronger cylinder head bolts, etc

**gearspeed** · August 11th, 2013 02:34 PM

Yes I know stock won't handle the stress
I know I have to purchase aftermarket parts but which one is it the high comp pistons or should it be low comp pistons for turbo set up?

Thanks.

**uls** · August 11th, 2013 02:55 PM

high compression pistons for all-motor

low compression pistons for turbo

**gearspeed** · August 11th, 2013 03:01 PM

Originally Posted by uls

high compression pistons for all-motor

low compression pistons for turbo

Then what they said to me is wrong it shouldn't be oversize everything.

**uls** · August 11th, 2013 03:10 PM

huh?

ano mali doon?

what does that have to do with oversize?

if you're boosting an N/A engine (N/A engines have high compression pistons) you replace the pistons with low compression ones coz it's unsafe to use high compression pistons with high boost pressure (prone to detonation)

**Retz** · August 11th, 2013 06:28 PM

I think this is just a matter of simple logic. more 'muscle' equates to more power.

**niky** · August 12th, 2013 11:50 AM

"Oversize" does not mean "High Compression"

"Oversize" means to either bore out or "stroke" the motor.

Most likely, the shop in the US is suggesting you get a stroker kit, for more power potential. This gives you more effective displacement. Pair this with the correct turbo pistons and you'll have a turbo-friendly compression ratio along with big displacement.

**uls** · August 12th, 2013 12:00 PM

yep

they could be suggesting you either rebore the block to accept bigger pistons

or get a stroker kit if you wanna retain stock bore

**gearspeed** · August 13th, 2013 03:47 PM

Originally Posted by niky

Most likely, the shop in the US is suggesting you get a stroker kit, for more power potential. This gives you more effective displacement. Pair this with the correct turbo pistons and you'll have a turbo-friendly compression ratio along with big displacement.

I see yan ang hindi sinabi sa akin nung shops overseas.Basta sinabi sa akin oversize mo lahat kahit na sinabi ko na "its for turbo application".
Now I know what to do.

Thanks.