Just did some major install work (header, exhaust, oil jet botls) and when all was done, I noticed a threaded hole in the cylinder head, just forward of the header, next to the VTEC solenoid valve assembly. It appears to be a "closed" hole, i.e. it doesn't go all the way through into the vlavetrain area, but I don't know what it's for... I can find no mention of it in the Helm manual... All bolts removed/used during the installs are accounted for...


Here's a couple pics:

 

I dont have anything there ethier

 

I bet it's a mount for the heat shield.

 

Im not sure but Vortech uses it for the SC brackets.

 

probably a mount for something RHD. i know on B-series Hondas, the valve cover had a threaded hole like that which was used for the throttle cable bracket which comes from the other side.

 

I agree. Twohoos, are you gonna put on the heatshield?

 

It's not a heatshield mount. As I said, all bolts are accounted for, and I have mounted all the heat shields. They do not come anywhere near this hole.

I'm betting Secret's right that it's used only in RHD configurations.

 

You just made your car faster by saving a little weight!

When I had my 300ZXTT....everytime I would work on the darn thing I would end up with spare parts...scary!

 

It is used for fixturing during the manufacturing process...

 

Attachment points for an engine hoist?