4age Pistons In 5k

[tioklou]

hello! i want to ask you if the 4age pistons fit straight in to the 5k engine they need any modifications? thanks!!!

[SLO-030]

Pretty sure you have to bore the engine out a bit. But once bored out you can use the entire piston and rod combo.

[TRD ke70]

you also need to machine the block down to get the compression up!

[philbey]

Piston crown to gudgeon pin distance is smaller on the 4AGE slug, so yes, you need to deck the block quite a bit.

[TRD ke70]

we machined ours down 1-2mm i think, could be more, depends on the compression ratio you want.

 

we thought it was well worth the effort, had a better range of pistons.

the Big End is smaller in size but this hasn't caused any problems, we have had the engine apart a couple of times and it was the first thing we checked.

It was/is all good, checked with a micrometer too.

Edited November 28, 2009 by TRD ke70

[Falken_KE30]

Some Apexi Seals will be needed too :jamie:

 

But as the others said, they can fit, but why not go a 4age anyway?

[Toy-Yoda[RL]]

Because K motors are inherently better than 4AG's? :jamie:

[kiahn]

haha sounds like a perfect opportunity to put a turbo on the motor with the lowered compression :jamie:

[Taz_Rx]

But as the others said, they can fit, but why not go a 4age anyway?

 

Because then your just another takumi wannabe sheep!! :jamie:

[Falken_KE30]

yeah, but its a done and tried swap. cheap enough if you get parts at a good cost, and do work yaself

[anastasios]

He lives in greece, I don't think there are many bogans wrecking corollas around there lmao

[**chumps**]

haha sounds like a perfect opportunity to put a turbo on the motor with the lowered compression :D

 

does any one know what the compression would be. would it be low enuff to run 16psi of boost ?

[Taz_Rx]

You can run 16psi with the stock CR. :D

[pingushred]

do the 4age pistons fit on the 5k con rods ok?

[Evan G]

why do manuals engine combos have CR of 9:1 and autos 8.5:1??