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TURBO

The turbo charger is not an often failed item, but poor maintenance and use of incorrect oil weights and low quality coolant can reduce the life of this item.

Don’t forget to check oil pickup and maintain o-rings.

The most commonly used turbo is an IHI – RHF5 and:

A reasonable supplier for the 4JX1 has a turbo with both patterns already drilled at $409, including freight ex-Melbourne.

RHF5 Turbo

The tube shown is the balance pressure tube to the waste-gate and is usually straight.

The local coolant pipes to the turbo should be checked for bulges and leaks. Replacement is essential and at the time of replacing or servicing the turbo – replace all the hoses. An oil resistant hose is a good idea as rubber hoses can degrade if there has been diesel in the coolant [as do sealant rings etc].

Manual for Turbocharger:             4JX1 Turbo – Induction Manual

Method of replacement:                 IHI RHF5 turbo rebuild/ replacement

Source for turbo replacement:     Turbo source

This is a turbo that has failed [unknown time in service], which has hit the impeller blades and on removal had excessive end-ply on the shaft [> 1mm], which should be <0.09mm. There was oil in the waste gate tube, which may have affected operation as well.

Turbo damage - mark


 

Replacement turbo’s: Have a set of holes, which are either 80 or 93mm centre to centre.

4JX1 - Turbo sizes and measurements

A reasonable supplier for the 4JX1 has a turbo with both patterns already drilled at $409, including freight ex-Melbourne.