TR6 Help with removal of TR6 crankshaft end bolt!

[bunzil]

Hi,

I am trying to remove my timing chain cover to eliminate a leak. So far so good but removal of the crank bolt is posing a problem. First of all, is this a standard thread bolt - that is left to loosen? Dumb question perhaps, but worth asking.

Second, it's pretty stubborn and I can hear the entire drivetrain loading up in the back resisting it. There's no rust on the car anywhere so there's no issue with excess rust on the bolt threads. I am just worried I'd break something somewhere else if I really lean into this bolt.

Any and all advice appreciated.

Thanks!!!

Ned

 

[Darrell_Walker]

Hi Ned,

It is a standard thread.

The torque spec is pretty high, somewhere over 100 ft-lbs, I believe, so it should take some oomph. If you have an impact wrench, that would be the way to go.

-Darrell

 

[poolboy]

I'll second the impact wrench for removal, but use a torque wrench to tighten it back.

 

[bunzil]

Thank you, very much appreciated. So standard counter-clock wise for loosening? If I have this wrong, tell me. Since the engine rotates counter-clock wise I thought I might encounter reverse threading, like wire wheel knock-offs.

I don't have an impact wrench, but do have a compressor. They are not that expensive...perhaps this is my excuse to finally get one.

Many thanks.

 

[Darrell_Walker]

I don't have an impact wrench, but do have a compressor. They are not that expensive...perhaps this is my excuse to finally get one.

And for occasional home use, an inexpensive one from a place like Harbor Freight is likely all you need. Plus, having the ability to make that cool garage sound can't be over-stated

 

[Darrell_Walker]

Thank you, very much appreciated. So standard counter-clock wise for loosening? If I have this wrong, tell me. Since the engine rotates counter-clock wise I thought I might encounter reverse threading, like wire wheel knock-offs.

I don't have a TR6, but given that the transmission, cooling fan and rear end are basically interchangeable with the 4A, I would think the engine rotates clock-wise, same as the 4A.

 

[DNK]

Actually on this, the compressor is more important.
When I did my Wedge for the first time . I tried it by Electric ,then my air impact. My neighbors bigger compressor and finally rented a better one.
Spun right off. Same gun the whole time.

 

[Gliderman8]

This is how I did it....

 

[hondo402000]

I just checked my bolt and its lefty loosy, and a fine thread at that

Hondo

 

[bunzil]

I was thinking something along the lines of bolting some form of clamp to the flange but I've always wanted an impact wrench...so it's off to Harbor Freight today.

As for counter-clock wise - my mistake. That's as viewed from behind the engine. Not facing it. If facing yes, it would be clockwise.

 

[hondo402000]

or you could put a pipe wrench on the fan extension, that worked for me

Hondo

 

[Scott_Hower]

Just removed the giant crank nut from my Spitfire.

I pulled one of the plugs. Backed off both rockers to close the valves. Inserted about 3ft of cotton rope into the plug hole - with plenty more sticking out the plug hole. Piston compresses rope preventing the engine from spinning.

Used a 4ft length of black pipe over my 1/2in ratchet. It took some effort, but popped loose.