4AGE block differences explained (incl. some eyecandy)

[Bean]

Alex170984 Wrote:Are they 20mm on 10.3:1 smallport and 20V pistons high comp?

yes they are.

I UPDATED THE FIRST POST SO READ IT AGAIN FOLKS

[Bean]

Uzelac Wrote:There must be difference in height since dome is a bit bigger at HC pistons.

why I said this

Bean Bandit Wrote:the rest of the dimensions are the same disregarding the differences due to the dome design.

[Alex170984]

i'll post up a picture of my new and old pistons later...

[ZDoman]

Bean Bandit Wrote:I do know about it and if it had a 42mm crank then the pistons were 10.3:1 th only sub low comp (sub 10) piston with 20mm pin was the 4AGZE and they are 8.9:1
anyway I wasn't really listing all the different versions merely the oddball OEM block at the top compared to others.

You are not right, the AE92 bigport engines with AFM came with 20mm pin 9,4:1 pistons!

[Alex170984]

Here is my old piston with a 20mm pin

Sorry about cleanliness




Here is the new piston




What are they?

[ZDoman]

probably AE92 bigport AFM 9,4:1 CR pistons!

[Alex170984]

I haven't got an AFM

[Bean]

ZDoman Wrote:probably AE92 bigport AFM 9,4:1 CR pistons!

I stand corrected, the dish is the same as other 9.4:1 CR pistons... first time I see one of those with a 20mm pin.

[Alex170984]

Great so i've got shit pistons

[Bean]

wouldn't call them shit just lower compression than a smallport one