Topic: What tool for the 4 interior head bolts?

[Jerry Rxman Griffin aka MuthaF'er]

And on the seventh day Honda says "Use special tool 07906-323000" to remove the 4 interior head bolts that happen to have 10mm heads that a standard socket will not fit. Now, I know we all have this "Special Tool" but just can't find where the hell we put it. My "Special Tool" disappeared died when I got married and I can't find it either.

What has everyone done to manufacture their own version of this "Special Tool # 07906-3230000" or has anyone found something that doesn't need fab work? Has anyone taken their handy dandy Dremel and reamed the area of the head around the bolt to where it would accept a standard socket?

And, with this in mind, why don't we have a seperate FAQ about "Special Tools" ??

 

[adams77]

I guess I got lucky because the last 3 engines that I separated heads on I used a 1/4" drive 10mm socket.

[Jerry Rxman Griffin aka MuthaF'er]

Yeah, the 1/4" worked but what about torqueing when putting a head back on? My torque wrench is 1/2". I've often wondered about the torque readings when using a 1/2 to 3/8" adapter. Using the 1/4" will require 2 adapters. What are everyone's thoughts on this (other than I'm trying too hard)? Tighten until it feels good?. Use 2 adapters and go for the higher end of the torque range? It's not like it will be re-torqued after the engine is installed.

[Bodi]

Torque is torque. Nothing in a reducer/adapter will absorb torque, it all goes to the fastener. If a 1/4 drive socket and adapters will survive the torque applied then use them. The wrench reading is no less accurate than with a single socket.

[bryanj]

Buy a set of "long" series 3/8 drive sockets and you wont have any problems Snap on sell a set for a snip of a price (Ha Ha ) about $300

[Raul CB750K1]

I have a 1/2 to 1/4 adaptor. Actually, one day I was tired of never having the right connector, I bought a lot of different adaptors and extenders in 1/2, 3/8 and 1/4 so I can now do almost any combination. I'm with Bodi about the torque. Some of it could be used in twisting the rods, but once the fitting is tight I think there is not much difference between the setting and the actual torque applied.


Raul

[adams77]

Be very carefull when torquing those 6mm bolts, the aluminum if notorious for stripping.  Someone here found a typo in the clymers for the torque specs also, seems like clymers said 15 ft/lb, but that is too much for the 6mm bolts, but dont trust me.

[crazypj]

torque for 6mm is usually 60 to 90 INCH pounds (5 to 7.5 ft/lbs) I seriously doubt that your half inch torque wrench will have a low enough setting to prevent damage to something. Snap-On sell sockets seperately, get a long 10mm six point socket and a a cheap 1/4 drive extension. Only time you need to worry about torque with adaptors is when they are offset (flare nut, crow foot, etc.)
PJ

[superchode]

my buddy and i took a regular canadian tire 10mm socket and turned down the outside of it a bit so it would fit.

[Raul CB750K1]

That's correct. My 1/2 torque wrench won't go below 10 ft/lbs. I torqued the small bolts on my CB350 head using a 1/4 regular drive, and torqueing with common sense and a lot of care.


Raul

[HondaMan]

I have that special tool, and all it's bigger brothers.   

I have the Suzuki ones, too.   

A 1/4" socket will do OK: tighten those 6mm ones on the head to 7 ft-lbs, then to 8-9 ft-lbs an hour or longer later.

The ones to watch out for: the ones that hold the pivot shafts in the cam bearings (for the rocker arms). These MUST NOT be torqued beyond 7 ft-lbs, or you'll be calling me for my 6mm Helicoil kit, Jerry!

[Jerry Rxman Griffin aka MuthaF'er]

The ones to watch out for: the ones that hold the pivot shafts in the cam bearings (for the rocker arms). These MUST NOT be torqued beyond 7 ft-lbs, or you'll be calling me for my 6mm Helicoil kit, Jerry!

Thanks for the info. I successfully installed that helicoil we talked about and the oil leak is gone. Of course I have a new leak to replace it. I have plenty of the inserts with the kit so I'm ready.