So you've been reading these boards, and you've heard about some KLZE engine!! You probably want to know some things about it, Why you should get it, Where you can get it, How much it costs, and How hard it is to install. Well, Thats why I wrote this little How-To ...
The KLZE is just one variation of the KL family Mazda designed motors. The KLZE is featured in several mazda cars in japan, and it is sometimes referred to as the "J-spec" (japenese spec
) motor. Like the KL03 (its american "A-spec" counterpart), it features a 2.5 Liter V6 engine, with Mazda's VRIS (varible resonant Induction system), capable of roaring effortlessly into the 7000+ RPM range.This motor with a good driver should break into the high 14sec 1/4 mile times, and possibly when properly tuned w/all bolt-ons, proper ECU, good clutch and good driver may net 13sec times.
Its ability to make more power are from:
- A different Intake Manifold design, with significantly larger intake runners, allowing more air to flow.
- A different set of cams that are more aggresive.
- A higher compression of 10:1.
Other differences are:
Where can I get one of these KLZE engines??
- No EGR, In Japan they have a different emmision regulations, you should consider this if you are looking into the KLZE swap.
- Has an Ignitor-less Distributer, It featured a sepearte Coil-pack , You will have to swap over your A-spec Distro.
- Was primarily equipped in ATX cars.
- Came with a couple different Intake Manifold Variations. (MS8 and Eunos 800)
They can be had from several engine importers, Most popular is Corksport ( www.corksport.com
) they can get the J-spec ECU , and as a company are familiar with the swap.
Other sources can be found by visiting www.probeparts.com
. Prices vary between the $950 I got mine for, up to $2000+
So what Do I need to Know to Install it??
The KLZE is a direct bolt in, meaning exactly that!! All sensors, harnesses, Mounts, and even aftermarket bolt-on performance parts will work with just as it would a KL03. The swap is no harder than it would be to swap a KL03 for another KL03, with the addition of swapping distributors, and a little re-routing of a vacumm line. If you are hiring a mechanic, I would probably go as far as not even telling them that it is a J-spec motor.
You will also have to have, an aftermarket Air Intake, As per the intake manifold difference, there is a longer neck leading into the throttle body, causing the stock air-box to not fit in correctly. Id recomend getting a true Cold Air Intake system. Hotshot makes an excellent one.