tyler120706

firstly how do you identify a closed deck motor from any other ?

am i right there is a hashed patten printed into the block as you look between the power steering pump and the alternator?

i got the chance of fitting one to my my2000 t2000 im looking for 400bhp but my options are a version 10 uk sti 2.5 short motor with uk heads or the closed deck 2 litre as mentioned what are either of these engines capable of without forging them.

i have heard the 2.5 blocks suffer from piston failure is this true?

thanks for any response in advance

akydawn

hi mate you are right about how to identify a close deck block iam unsure of how much bhp you could get before forging them but i would imagine just over 300 bhp before you put to much stress on the engine but iam sure some one on here will put you right

P1Drifter

iTrader: (7)

in completely standard form the 2.5 is probably a better bet, the stock internals in a CDB are now very old and were not that great in the first place. The 2.5 Does have poor pistons, but with a sensible map would probably be ok to near 400. If your only looking for 400 and while everything is apart i would put some pistons in the 2.5 (and probably bearings) or if you have a bigger budget forge the CDB with a 2.1 stroker kit for a super strong engine (have one myself at 500+ and love it !)

TonyBurns

iTrader: (3)

You would be better off with a newage STI engine which can do 400bhp with ease compared to the early 93/94 cdb engines (acutally any classic engine)
Remember its not the block type (CDB, SCDB and ODB) but the internals that determine the strength (upto a point).

Tony

stevemoir

iTrader: (24)

and to add to that your 5 speed gearbox might not be upto the task of holding 400bhp

neither would the clutch

steve