What Kinda bolt is this?!

[bighands 0]

Im in the process of stripping the new/secondhand 2.0 block i have while i await the head back from the engineers, and i go to undo the bottom timing bolt, the one off the crank, and im greeted by this odd looking nut.

Not the nice big 22 odd mm nut i would of liked, so my question is, what the hell is it, what size and where do i get the right socket to get it off?!

 

Its kinda like a reverse torx, slighty more rounded tho

 

Cheers

Andy

[steveo29 0]

12point socket.....most socket sets have em

[bighands 0]

Does it just look like a normal socket, one of the ones with loads of teeth?

[Toad 0]

A normal multispline socket will fit it, i think it's a stupid idea to try to stop people from rounding normal bolts off, looks a bit rusty so it might be worth giving it a good tap on the end with a hammer just to help free it off.

[bighands 0]

Result, just tried 'normal' socket and it worked?! in all my years of fixing cars iv'e never come across one of these!!!

Learn something new every day eh!

Cheers mate ur a diamond :-)

 

Andy

[Yandards 0]

I'd get a new one when you stick the engine back together - that one is knackered!

[2_Door_fun 0]

I'd get a new one when you stick the engine back together - that one is knackered!

 

Some on the forum say replace this bolt with a different kind. From a Mk1 GTI or something. Is this a bad bolt or something?

[steveo29 0]

get a bolt and washer from a DX engine

[Chris VR6nos 0]

Some folk call this a double hex or a 12point as mentioned...

 

 

 

Chris

[Henny 0]

that kind of bolt was a stretch bolt and as such was single use only. If you've removed it, it WILL have to be replaced with a new one.

 

The replacement which ISN'T stretch is from a DX coded 1.8 8V engine out of a 1982 MKI Golf GTI. You'll need both the bolt and it's washer. It's an 8 sided bolt rather than 12 sided and is re-usable... 8)

[davidwort 0]

that kind of bolt was a stretch bolt and as such was single use only. If you've removed it, it WILL have to be replaced with a new one.

 

The replacement which ISN'T stretch is from a DX coded 1.8 8V engine out of a 1982 MKI Golf GTI. You'll need both the bolt and it's washer. It's an 8 sided bolt rather than 12 sided and is re-usable... 8)

 

make sure it's the correct length, there's a number of these crank pulley bolts, 16v ones are definitely longer, and stick some loc-tite on it when fitting.

 

David.