Flywheel Torx size

[GreenSuby]

Gday all
Trying to remove a flywheel from an ej25 motor that has a duel mass flywheel to change to single mass.
Does any one know the torx size required? I think it is t47?
Thanks
Green suby

 

[duncanm]

Be careful - I think its actually a T50+ (torx plus). A T50 will risk stripping out the bolts.

they are renowned for being complete *******s to remove.

 

[ateday]

Often need to be drilled out.

 

[AndrewT]

Yeah not normal torx, you need the special ones as above. I found these tools very difficult to source, even a speciality tool place had to order them in. I didn't end up getting one in the end - I ended up welding a nut to each torx bolt to undo them, chucking them away, and replacing with normal flywheel bolts!

 

[ozzycouch]

I got all mine out bar one with a standard Torx bit the right size, just need to put some positive pressure towards the engine while doing it. Had to drill out the final one. New bolts should come with the single kit.

I ended up welding a nut to each torx bolt to undo them, chucking them away, and replacing with normal flywheel bolts!

How did you do that? The heads of the bolts are 20mm below the face of the dual mass flywheel with not a lot of room for welder, let alone get a socket to fit through the little holes just bigger than the torx heads to undo the welded nuts?

 

[GreenSuby]

T50+ is the correct size as suggested.
I tried with a normal t50 but snapped it.
Gave up & took the motor into a subaru specialist who had the right tool.
He started by removing the circlip to take off the outer plate of the duel mass flywheel which gave better access to the bolts. I damaged 1 so he had to grind the head off then use a chisel to turn what was left of the bolt.
I've used hex head bolts for the new flywheel.
Gotta recomend RC automotive (suby specialist) in wollongong for their friendly service. He gave me a few pointers on other things while in there.
Greensuby

 

[AndrewT]

I got all mine out bar one with a standard Torx bit the right size, just need to put some positive pressure towards the engine while doing it. Had to drill out the final one. New bolts should come with the single kit.



How did you do that? The heads of the bolts are 20mm below the face of the dual mass flywheel with not a lot of room for welder, let alone get a socket to fit through the little holes just bigger than the torx heads to undo the welded nuts?

Ah should clarify, this was on an auto motor. The torx+ bolts holding it all on were easy to get to. I replaced it with a single mass 5speed flywheel and used regular flywheel bolts.

 

[ozzycouch]

Ah should clarify, this was on an auto motor. The torx+ bolts holding it all on were easy to get to. I replaced it with a single mass 5speed flywheel and used regular flywheel bolts.

Man, I was so interested in another way to get them off that I may have missed.

He started by removing the circlip to take off the outer plate of the duel mass flywheel which gave better access to the bolts.

That's really useful information for the future struggle of removing a dual mass flywheel.