Turbo swap question on 4d56t?

**kihtmaine** · August 14th, 2008 11:46 PM

Is it feasible to swap the turbo of the said engine? swapping the turbo with a turbo of a fuso truck (6d or 8d series) stuff like that.

If yes:
Is this turbos are high or low boost?
How much boost this turbo of the truck produce?
Also any idea how much hp will produce installed on 4d56t?
What particular parts will changed?
May nakagaw nito?

Can't sleep for days cos there's store here in our place selling those turbos very *seductive* they are big you know 'snails'.

TIA

**rion** · August 15th, 2008 01:06 AM

big doesn't always mean better. on 4d56t's case it will only make your ride more like a "big snail" on start off...

just think about it; the turbo is to compress air. the bigger space means it takes longer to produce compressed air.

a 4d56 turbo can already give you abundant of compressed air, but you are still limited to your engine's boost pressure max capacity, which is 12psi. so the wastegate will "waste" the excess pressure of your 4d56 turbo.

one best way is to use those Variable geometry turbo. the turbo internal space size varies according to your rpm. but work and cost is not worth the trouble...

the real best way is to use your existing turbo and buy a boost controller to increase boost. and for better turbo lifespan, add a BOV.

**kihtmaine** · August 15th, 2008 01:13 AM

Originally Posted by rion

big doesn't always mean better. on 4d56t's case it will only make your ride more like a "big snail" on start off...

you are still limited to your engine's boost pressure max capacity, which is 12psi.

one best way is to use those Variable geometry turbo. the turbo internal space size varies according to your rpm. but work and cost is not worth the trouble...

the real best way is to use your existing turbo and buy a boost controller to increase boost. and for better turbo lifespan, add a BOV.

What do you mean by a big snail?

**rion** · August 15th, 2008 01:24 AM

mean's unresponsive on taking off from standing start...

**4JGtootsie** · August 15th, 2008 07:57 AM

Originally Posted by kihtmaine

What do you mean by a big snail?

What sir Rion is saying is a bigger turbo will spool longer than a smaller turbo because of the differences in turbine wheel, air\radius and trim. In short, TURBO LAG or the time it takes for a turbo to spool up after the throttle has been increased.