Outer Limits 4x4 Board

Hey guys,

picked up a good manifold and 3inch exhaust with a busted turbo attached. Also scored a m24 garrett turbo off a 3l patrol.

Should I bother putting the 3l m24 turbo onto my 2h toyota or am I wasting my time?

I am wishing to get upto 12psi out of this thing.

Cheers,
Foodie

I would have thought that it would depend on the wastegate and as to whether it was integral (normally unchangeable) or external. The 3L turbo by simple logic should produce boost quite early, but will run out of steam early too. May be issues if the wastegate is computer operated/controlled.

Jury is out....

I have an m24 on my 2L hilux (2.4 diesel) and it goes like a champion

But I'm no expert...

simply, I don't know jack about turbo's.

its a 4L motor and this is from a 3L - has a much smaller inlet and outlet than the current stuffed turbo but the housings are roughly the same size.

Anyone got some pointers on what to look for that would suit a 4L 2H ?

Looking for 8-12 psi.

Thanks!

A turbo is simply an air pump. So what you are looking at is what volume of air can the turbo shift at what pressure. The smaller the inlet tract is the easier it is to keep the pressure up as you don't need as much air to fill the inlet. A 3l patrol will rev to 4.5 grand quite freely with boost the whole way. Your 2H isn't probably going to see that many revs. So effectively the turbo off the 3l will probably give you good low down boost as it will spool up earlier due to the smaller size of the turbo and the greater amount of exhaust gases from the 2H versus the 3l. The flip side is that at higher engine revs it may drop off slightly. But i wouldn't expect the decrease to occur until you are up around 4000 rpm, which hopefully isn't often. Only a real world experience will give you an exact answer.
Good luck. Cheers

The problem with using this turbo on other motors is that it does not have a wastegate at all but its actually a variable vane/nozzle turbo. The actuator looks just like a normal internal wastegate actuator but it controls the size of the outlet of the turbine - smallest outlet at low revs/idle ( quick spool/boost just off idle ), as revs rise the actuator increases the turbine outlet size as needed to control boost. Not sure but the ECU would control the boost/vac signal to the actuator so wont be simple to set up. Best check in the nissan section.


12 pounds is nothing for that turbo but getting it to run 12 will be the hard part.

The 'M24' is on many different garrett turbos around that size but the ZD30 patrol m24 and an m24 on a 2L hilux are very different.

Its probably a little small and you would have to sort out control for the actuator, but one option is to remove the actuator and lock the outlet/nozzle in the fully open position it may not be too bad on a 2H. If you already have a manifold and everything its worth trying it out anyway....

Plus if it is too small everything will be set up ( oil+,drain, water lines etc. ) so just find a suitable sized garrett, bolt up and go.

Good luck

Thanks guys!

the flanges look like non standard garret bits, rather patrol factory flanges (once again only from what I have seen on the net)

Looks like I have hit the wall with this turbine and it's variable vane setup!

If you did lock it open, that would lower the available boost?

Foodie

Yeah i wasnt sure if it would have standard garrett flanges or specific patrol/nissan ones.

I think you would have to try it out to see exactly what boost it would make.

Having it open would give the best flow through the turbine which would hopefully make it less restrictive at higher revs. You may find it works great at low revs ( <2500 ) and makes boost fine, but high boost doesn't necessarily mean adequate air flow so it may feel restricted at higher revs ( 3000+ ).

As for other suitable turbo's, there is a turbo sizing calculator program where you enter all the engine details and it will give approx. BHP, air flow and a suitable size turbo. From all that you should also be able to find what turbos from other cars are similar size if you were looking for second hand.