Honda-SOHC

SOHC.co.uk Forums => CB350/400 => Topic started by: Harold 400/4 on August 10, 2015, 08:59:03 PM

Title: 400/4 spark plug helicoil
Post by: Harold 400/4 on August 10, 2015, 08:59:03 PM: Looking to sort the plug threads on my 400/4. From past posts, helicoils look to be the way to go.
I have read the inserts can come out when you take the plugs out?? Has anyone had any issues with helicoils?
Many thanks
Harold.
Title: Re: 400/4 spark plug helicoil
Post by: tom400f on August 10, 2015, 09:06:13 PM: Had one done on my CB175K6 back in the day. It was perfectly fine afterwards - good as new
Title: Re: 400/4 spark plug helicoil
Post by: Green1 on August 10, 2015, 09:10:27 PM: My Guzzi is full of them not been an issue yet. :)

Mick
Title: Re: 400/4 spark plug helicoil
Post by: hairygit on August 10, 2015, 09:12:32 PM: A Wurth insert or sometimes called a timesert is better, it's like a metal tube that's threaded inside and out. Offers better heat dissipation as well.
Title: Re: 400/4 spark plug helicoil
Post by: hairygit on August 10, 2015, 09:13:57 PM: Quote from: Green1 on August 10, 2015, 09:10:27 PM
My Guzzi is full of them not been an issue yet. :)

Mick
Till the next time you try and remove a bolt/stud if you re used the shitalian bolts
Title: Re: 400/4 spark plug helicoil
Post by: Green1 on August 10, 2015, 09:16:07 PM: You just unwind the insert then ;)
Title: Re: 400/4 spark plug helicoil
Post by: Greg65 on August 10, 2015, 10:44:33 PM: If it's just the beginning of the thread then you might like to consider a back tap. I recently used one and while the tool is not perfect at £30 it will do, there is an ideal one state side at over £100. I got mine from motorcycleproducts.co.uk.

Greg