Outer Limits 4x4 Board

just wondering what differences were between the 4.2D and the 4.2TD. And how will a 4.2D take and aftermarket Turbo and what sorts of boost has people been running in it with out a problem.

whoa whoa whoa cowboy too many variables be more specific.

diff between 4.2 and 4.2TD

4.2TD 114kW @ 3600rpm Torque 360Nm @ 2000rpm
4.2 85kW @ 4000rpm Torque 264Nm

aftermarket turbo 4.2 specs vary

safari quote 120kw 375Nm from intercooled kit

boost is another question all together it is a depends type answer

sorry, im looking at a GU Ute 4.2D and wasn't sure how it went with an aftermarket turbo if i wanted to turbo it later on down the track. a mate at work told me the pistons were different after 95 in the 4.2D compared to the 4.2TD. I was also trying find out if the CV joints and diffs were different because i was told that the GU had tougher Front diff and CV joints then the GQ and wasnt sure if it made a difference with the different motors.

the difference is on a non turbo 4.2 out of a gq has cast pistons and the vacuum pump is on the alternator and 4.2 turbo out of a gu has forged pistons and the vacuum pump is on the timing case below the injector pump
but you can turbo a gq motor with out any dramas its only when you get into high boost pressures that you need better pistons

cheers

What do you call high boost pressures?

anything over about 15 -25 psi but i say that mine runs 28 psi in a standard engine and had no complaints but i know of others running about 17 that have buggered there engine

The factory TD42 turbo engine has an oil cavity under the piston crown that is fed by the oil squirters in the block for piston cooling, it also has a larger rod and piston pin than the non turbo engine.

Cheers

Joel