Difference between low-charge turbo and standard turbo

[jraf_zams2]

Mga tsikoters,

May tatanong lang ako. Ano bang part sa low charge turbo ang pinagkaiba nito sa mga standard turbo charge? Katulad ng nakalagay sa mga crosswind na low charge.

[niky]

There's no such thing as a "low-charge" turbo. It's just Isuzu marketing talk. It just means that Isuzu's 4JA1-T turbocharger produces very low boost (which is why the engine is still rated at under 90 hp. It provides a tiny bit of midrange torque, but nothing to really get excited about... at most, it gives only 14 ft lbs of torque, and about 4 more horsepower. Exciting, huh? :hihihi: ...in practice, it's nearly un-noticeable, as the turbo Crosswinds I've driven have never felt any more powerful than the non-turbo ones.

It's a good way for them to market a disadvantage as a product feature. But truthfully, the turbo only helps keep the automatic Crosswind from being unbearably slow from a stop, and helps give the manual Crosswind a little extra pep, but not enough to warrant paying extra for it... which is why Isuzu has never charged much extra for the turbo unit.

[jjmichaels]

Similar to LPT of Volvo. Light or low pressure turbo. It sorta defeats the intended purpose. You'd like a little more ooomph in power when it has a turbo on it.

[alwayz_yummy]

LPT ata ginagamit para bolt-on lang at walang major internal part difference-->

for example, sa 4d56 non at turbo at sa 2c-local at sa 2c-turbo. may major difference sa internal components, specifically sa pistons and its rings..

[empy]

"low charge" (yes, a better name would be low pressure or low psi) turbos do have an advantage. they spool up quicker and do not lag as much (i.e. power delivery is more linear), and they are create less stress on an engine, especially if you're going with stock internals.

however, as niky said, they will not make a grossly underpowered car fly. they are better to enhance power delivery on decently powered cars or those that need a little more kick in the midrange at a fairly affordable price.

[niky]

Of course, in some case, you have to wonder why they even bothered. I could get just as much horsepower out of the 4JA1 by fiddling with the exhaust and injectors.

Heck, Isuzu could get more midrange just by shifting to CRDI. But that's kinda expensive to put in such a cheap car... especially one that sells for just as much as some CRDI equipped vehicles from other manufacturers...