Topic: Best way to remove exhaust spigots ?

[DH]

Like the title sez. I've beat the impact driver till it finally gave it up. Haven't stripped any screws and got 1 out, but the rest are givin me h3ll. What method do you folks use? I need to change the gaskets due to small lleak....Thanks.


PS Working with cylinder head removed.

[edwardmorris]

Heat gun, then impact.

[greenjeans]

More heat.  Are the pipes still on the bike so you could run the motor ?   You could secure it and run it to get the head hot.   Then go at it again with the impact driver.  I really like PB Blaster combined with heat.

[DH]

Well, I got all of them but one with the impact driver, head off the engine. The impact died on the last one, lower #3.
Ended up drilling it out, and will have to repair the threads. I like the heat from the engine trick. Would've tried it, but the engine is getting the royal treatment at the moment, awaiting new primary chains and tensioner, and same with the camshaft, so the engine is in pieces. Thanks for the suggestions guys.

[edwardmorris]

Heat gun is easier to use when the head is off, just need to heat up the threaded section and use this impact driver from Gordon, never fails.

http://shop.rrrtoolsolutions.com/4-Bit-Mechanics-Shop-Impact-Driver-Vessel-2500-RRR4IMPACT.htm

[disco]

I just removed the exhaust spigots as well. They were seized up real good, even after a good soak in penetrating oil. My Kinchrome bits gave up before the screws even moved. The screw head was mangled so I decided to use a centre punch to try out "rotate" them out. Took my time working around the perimeter but they eventually decided I was more stubborn than them & they relented.

[Nic]

I just removed the exhaust spigots as well. They were seized up real good, even after a good soak in penetrating oil. My Kinchrome bits gave up before the screws even moved. The screw head was mangled so I decided to use a centre punch to try out "rotate" them out. Took my time working around the perimeter but they eventually decided I was more stubborn than them & they relented.

Center punch always worth a go, well done Bruce

[disco]

It's probably a combination of the beating the screw on its head & the rotation that causes the to let go. I hope that someone else might find this method useful. I would keep it until last though....try the impact driver first.