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whats the difrence between mx3 v6 spark plugs and jdm klze ones's "BKR6E 11".

will the jdm ones work better tha the mx3 v6 one on my klze? i heard the mx3 v6 work great on n/a kl's.

I dont think K8 plugs will work on a KLZE or atleast fit.

If your going to do the swap you might aswell change the spark plugs, cap, rotor and wires.

I know you're not suppose to use DE plugs in a ZE because of the higher compression pistons it would actually hit the plug. Considering that a K8 and a DE uses the same compression, I would assume that if the plugs fit, the outcome would be the same

K8's run at 10:1 compression? I had heard that they were 9.1:1 compression and that ZE's run at 10:1? I will research further

Tunes67

k8 has 9.2:1 compression. He probably ment de and ze have same compression.

mitmaks wrote:k8 has 9.2:1 compression. He probably ment de and ze have same compression.

Haha, no, i mean't that the K8 and DE have the same compression

Well I couldnt really find a specific tech source (granted I only looked for 10 minutes LOL) for the KLZE.. but the general consensus is that it has a 10:1 compression ratio. As for the other K series engines.. I did find this link in the FAQ forum:

http://www.mazdamaniac.com/tech/SAE_20920677.htm

Which shows a 9.2:1 ratio for the K8 & DE. Interestingly enough.. the KF has a 9.5:1 compression ratio. Anyway.. good read in that link in anycase.

For spark plugs.. this is a good read here:

http://www.mx-3.com/phpBB2/viewtopic.php?t=61610

Tunes67

well i have a mazda 323 hatch 94' with a klze with mx3 v6 spark plugs and i put down on the dyno 171whp 157trq mods:home made intake,sschrome headers,2.5 exhaust and mx3 4.38 tranny .couple of months have past went again with same mods but with the BKR6E 11 plugs and mx6 tranny(4.10)"played a little with ignition" and i put down 178whp 164trq

This topic has been discussed many times.

But yes the correct plug for klze is BKR6E-11. its the same plug for the k8 but the k8 is BKR5E-11 the number is the heat range, the K8 uses a hotter plug. You can use either in the klze. Technically you would gain more power with the k8 as its hotter plug and you would run a bit hotter(lean).

the DE plug are a tad longer and rumor has it the piston will hit the plug. That is a hoax if you ask me. I ran them for a few days without any problems with the gap closing. And after having a few ze's apart the piston will actually hit the squish area of the head before it even comes close to the plug.

But to clear it up the correct plug for the ze is NGK BKR6E-11 or Denso K20PR-U11

i like the bkr5e-11

anyways what do u guys think of my horse power with those mods?

The K8DE plugs should be the same as the KLZE plugs (which should also be the same as the FSDE engine). It's the KLDE plugs that typically have a slightly longer electrode length that could slam into the pistons if put in a KLZE.