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5LE (LN167R) kw boost suggestions

basdg

By basdg
in Hilux Club

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  • 3 weeks later...
Manxman Veteran

Manxman

Posted
Posted

2 wise statements from them I learned from:

Only milk and Orange juice come in 2Liters.

There's NO substitute for cubes!

& my own:

If you really wanted power, you should have bought something powerful.

Otherwise just be quiet and enjoy the ride.

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Manxman Veteran

Manxman

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Posted (edited)

To make it clear-do not turbo a 5L nor 5LE motor-Mr. Tojo built a new engine so he could turbo a 3.0L diesel. It was not a free choice, it was a necessity!!!!!! I doubt any significant improvement can be made without risking premature head failure.

The L series motors have a history of head failure due to inadequate cooling. [Typ around 250,000km] The only safe one known to turbo is a 2L-T, but even those have problems. There is a Chinese allow head for the very first L series motor [with rockers], if you wanted to import one. Fitting a turbo to a 5L/5LE dramatically increases the thermal load on the iron head, ecouraging early failure. If there was an alloy head, you might get away with it, but I suspect the block is also on its thermal limits, hence the new engine to handle the heat.

Sorry to disappoint you, but that's the way it is.

Edited by Manxman
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basdg Progessing

basdg

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Thanks for the detailed info.

To be honest I wasn't contemplating doing the turbo upgrade as I am of the belief of your first statement.

I was hoping there'd be other mods (other then turbo) even if it were to boost by a lesser margin, however it does not appear there's anything out there.

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