Installing a Koyo radiator and I want to drain the system completely. I have drained the radiator but I know there is a nut and washer somewhere that I need to remove to drain the block. Does anyone know where it is and have possible pics? By the way, it is a jdm H22. Dont know if the is a difference between H23 or not. Pics
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On top of and to the left of the oil filter.

#32 here:


Be prepared for a mess, the coolant comes gushing out.

 

Off hand does anybody know what size sockett you need to get this thing loose?

I remember somebody saying you need a huge hex key. That doesn't sound right though.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by hu &raquo;</TD></TR><TR><TD CLASS="quote">Off hand does anybody know what size sockett you need to get this thing loose?

I remember somebody saying you need a huge hex key. That doesn't sound right though.</TD></TR></TABLE>

majstic honda says that it is a 12x60 bolt, so a 12 mm socket will do. I don't believe it is a hex bolt, but I am not 100% sure

 

No, that refers to the size of the bolt, not the size of the hex head on the bolt. e.g. a M6x50mm bolt is a 6mm bolt that is 50mm long. They will usually have a 10mm head on them.

The lug studs are M12 studs, but the nuts have a 19mm hex on them.

It's been a long time since I looked at that plug, but I'd guess a 17mm, 19mm, or 22mm head. It is not a allen key type of plug (that's in the head), it's a normal hex head like a cap bolt.

 

just bought one of the hex's from snapon the other day. its a 14mm. it cost me just under $28.00 lol, gotta love specialty tools.

and those things are a mother bitch to get out. they've got thread locker on em and i can guarantee its not gonna be fun.