289 crank pulley bolts needed

fastsvo · 07-05-1999, 01:02 PM

I need to know the size of the 3 bolts and the thread so I can get new ones from the local hardware store. I do not have the originals.

Mach · 07-06-1999, 12:46 AM

3/8 NC I believe.

fastsvo · 07-07-1999, 06:48 PM

fastsvo · 07-07-1999, 06:49 PM

Ok, the head is 3/8, but what about thread size (I understand that they are not always the same). How deep/long should it be? Thanks.

Mach · 07-07-1999, 08:14 PM

3/8 x ~ 1 bolt.

Add the thickness of all parts and locking devices and add 1.5 times the bolt diameter which happens to be 9/16 for a 3/8 bolt. This yields the needed bolt length.

The bolts in my C ballencer are 3/8 x 1 NC with a 7/16 head and integral washer. 3/8 usually have 9/16 heads.

07-05-1999, 01:02 PM	#1
fastsvo Registered Member Join Date: Jul 1999 Posts: 44	289 crank pulley bolts needed I need to know the size of the 3 bolts and the thread so I can get new ones from the local hardware store. I do not have the originals.

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07-06-1999, 12:46 AM	#2
Mach Registered Member Join Date: Jun 1999 Location: North East Ohio Posts: 23	3/8 NC I believe.

07-07-1999, 06:48 PM	#3
fastsvo Registered Member Join Date: Jul 1999 Posts: 44

07-07-1999, 06:49 PM	#4
fastsvo Registered Member Join Date: Jul 1999 Posts: 44	Ok, the head is 3/8, but what about thread size (I understand that they are not always the same). How deep/long should it be? Thanks.

07-07-1999, 08:14 PM	#5
Mach Registered Member Join Date: Jun 1999 Location: North East Ohio Posts: 23	3/8 x ~ 1 bolt. Add the thickness of all parts and locking devices and add 1.5 times the bolt diameter which happens to be 9/16 for a 3/8 bolt. This yields the needed bolt length. The bolts in my C ballencer are 3/8 x 1 NC with a 7/16 head and integral washer. 3/8 usually have 9/16 heads.