Thread: 110 with 3.9 4BD1 T

Originally Posted by land864

Thanks Rij and others.
I have a V8 Stage One currently that I am considering restoring.
I love it but the fam would like something with AC and just a little more comfort.
The idea behind a 4BD 1 Turbo County is that it would be our main family trip 4WD and possibly my daily driver. It would be comfier and have the grunt for towing a van.
Rij , I know you did a V8 to Diesel conversion but are you aware of the work involved in swapping a NA 3.9 to a Turbo 3.9. What I mean is , if you were to buy a NA Diesel County and sourced an ex truck turbo engine , would it just me a matter of unbolt the NA engine and bolt in the turbo.
Given it was a straight swap what would the approx cost be?

You would need to swap the flywheel housing, flywheel and clutch, starter motor and alternator.

The oil filter housing and filters are different to clear the tailshaft. If you put the NA ones on, you may loose oil supply to turbo - there are ways around this.

Unless there are real problems with the na engine (they are very reliable and long lived), it would work out better to just fit a turbo.

Originally Posted by land864

Thanks Rij and others.
I have a V8 Stage One currently that I am considering restoring.
I love it but the fam would like something with AC and just a little more comfort.
The idea behind a 4BD 1 Turbo County is that it would be our main family trip 4WD and possibly my daily driver. It would be comfier and have the grunt for towing a van.
Rij , I know you did a V8 to Diesel conversion but are you aware of the work involved in swapping a NA 3.9 to a Turbo 3.9. What I mean is , if you were to buy a NA Diesel County and sourced an ex truck turbo engine , would it just me a matter of unbolt the NA engine and bolt in the turbo.
Given it was a straight swap what would the approx cost be?

I go along with John's suggestion of fitting a turbo rather than a whole engine swap. The N/A engine has been turboed by quite a few guys on here and I intend to do the same with my N/A 120. I think a new turbo exhaust manifold to suit would be ~$350, and a turbo could be anywhere from free to $1000+.
A second hand GT25 on ebay in good nic, anywhere from ~$200 - $500.
You would need to do some plumbing for the turbo oil feed/return, crossover pipe from turbo to intake manifold etc, but the turbo and exh manifold are the only major components needed.

Cheers, Murray