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Are NAPS z24 headbolts same as ka24?


Spades

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I have some Z series bolts and they are slightly too long, to certainly too long, for the KA24E head. On some I can slip an extra washer or two in but this lessens the number of threads into the block. I even tapped the block deeper and got maybe one more thread. The damn bolts are narrower above the threads so can't use a die and put more threads on the bolts.

 

Z20 and Z22 bolts are the same but the Z24 are a different number. The block is taller and maybe the holes go deeper before the threads start?

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Did anyone confirm if the KA kit works with the Z24 motor? If not did anyone ever find one for it?

KA head bolts come in different varieties:

* KA24E - 11057-H5010/11057-H5000 10 needed. Reusable. Same as Z24

* KA24DE, 11056-F3F01 10 needed. TTY bolts, do not reuse. Different length than the KA24E bolts.

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