rebuilding a junk yard ka24de

[steebypue]

my 91 240 w/ ka24de has recently took a crap. a rod blew out of the side of the block so i will be getting another bottom end from a local junk yard.

i would like to rebuild it before putting it in. i was thinking of boring it to 2.5, new pistons to fit for a 9:1 cr ( in case i want turbo later), new sleeves, rods, crank, bearings, etc...

also i would like to port/polish the head with new springs, valves.

would u recommend anything done to the 5spd transmission? (it drives fine, but this would be the best time to take a look at it)

i plan to drive this for about 6-10 months before i can afford getting a turbo, so what do you think for the mean time? how would it drive wit the 9:1 cr?

thx

[Ni2s4s0aSnX]

this totally eliminates the point of your first post. And just check the transmission to make sure there's nothing wrong with it.

[silencer.1]

DOHC engines are 9.5:1 normally. It will be a little less powerful in the NA trim but more resistant to knock when turbooed. It'll more or less be like driving with a SOHC in the car.

[steebypue]

DOHC engines are 9.5:1 normally. It will be a little less powerful in the NA trim but more resistant to knock when turbooed. It'll more or less be like driving with a SOHC in the car.

how bout emissions? would doing this affect getting my car smogged at all?

[steebypue]

this totally eliminates the point of your first post. And just check the transmission to make sure there's nothing wrong with it.

sorry im more or less just trying to see what my options are... i dont want to make a decision and then regret it

i appreciate everyone's input tho. this has helped alot

[KADreams]

You will NOT feel a difference when going from 9.5:1 to 9:1 compression pistons, especially when you are rebuilding the entire motor. A fresh motor will feel more responsive, and more powerful anyways due to better sealing of the piston rings to the cylinder walls.

[KADreams]

I would also highly recommend Supertech pistons.