thread chaser

[Poor Ol Harry]

Well after cleaning carbs & r & r the jets......I put the carbs all back in place & connected all lines,cables & air box.....I decided to crank it without the fuel tank.only problem is when I connected a fuel supply.....the fuel rail between 3&5 was dripping fuel....instead of walking off & coming here ...I pulled the carbs & then came here the next day to learn a leak was normal & would likely stop & it did .....on my tailgate the next day.Sooooo,here's my next NEW problem....as I was installing the chrome intakes...as soon I turned the 8mm bolt with a 1/4 in. ratchett I felt if fowl /cross threaded!! I stopped immeditealy & am sure a chaser will clear it.Being metric,  does anyone know the correct thread size or how to id the tap or chaser I need? Or where I may order shuch tool? THANKS HARRY

[art]

Just measure the screw.If the threads are gone you will need a heli coil repair

[longrider]

It is a 6mm bolt.  Take a bolt in to fastenal and they will check it with a pitch gauge and match it up to a bottoming tap.  clean it up gently.  hope it works out. 

warren

[Ricky-D]

If you cross threaded the hole, what would make you think the thread chaser will go in straight?

The best I would think would be to take the intake completely off and then using a pick and a good light, slowly clean up the threads.

Once you get it all cleaned, turn the bolt in. If you did a good job the bolt ought to turn in easily enough.

***

[Madmike]

there is a difference between a thread chaser and a tap and there are different sorts of taps ( taper, plug and bottoming are the ones I am familiar with), the challenge when repairing threads is getting the tool straight to the original threads so as to not do any additional damage or remove any more material than necessary.

[bentwrench]

6mm x 1.0 pitch,is standard on car and bikes.
bw