P.S.A. ARP Head Bolt Kit for Z24

[Rudok]

Just an FYI, After I pulled the engine on my 86 720, I decided to waist some money on expensive head bolts. Come to find out there is no kit available that specifically mentions the Z24 (or at least none that I could find). I decided to pull the trigger and just buy the kit from ARP for the KA24E and guess what... it worked perfectly.

 

ARP 202-4307 fits the Z24 just fine!

 

If this is already a known fact, my bad for saying it again.... Just was glad to have a win!

 

[Madkaw]

I’ve heard this before but good to hear again 

[Dguy210]

4 hours ago, Rudok said:

Just an FYI, After I pulled the engine on my 86 720, I decided to waist some money on expensive head bolts. Come to find out there is no kit available that specifically mentions the Z24 (or at least none that I could find). I decided to pull the trigger and just buy the kit from ARP for the KA24E and guess what... it worked perfectly.

 

ARP 202-4307 fits the Z24 just fine!

 

If this is already a known fact, my bad for saying it again.... Just was glad to have a win!

 

 

Lol, they are actually the redesigned bolts going back to the A12!

 

I've personally used a Z22 bolt on an A14 and they are identical (excepting the single oil passage bolt on the A). While the Z24 uses that oil passage bolt for all 10!

 

"11057-H5000 and 11057-H5700 are for the A12 haha. It is funny that the Z24 engine uses the bolts originally designed for the A12!

 

Yes, those are Cro-Mo-V steel re-usable head bolts

11057-H5000 BOLT-CYLINDER HEAD LONG, TO OIL GALLERY (FROM 7/73) $4.03

* supercedes 11057-H5010 and 11057-H5700

* One needed per A-series, 10 per Z24

The A-series uses a stronger bolt for the other 9.

 

"

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."