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Old 02-25-2004 | 06:18 AM
  #124  
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kickass
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Originally posted by stefan
Dennis,

I have a question for you.

I stripped a head screw thread on two different Picco engines (curiously the same screw on both engines) and I was wondering what you would do to repair this.
a.) Helicoil?
b.) drill and tap for a 3.5mm screw?

Have you ever done this before?

Thanks,

Stefan
Hi Stefan ,Drill and tap 3.5.
use bolts from novarossi 15s, fit straight in.
You will have to bore out the head holes slightly for larger bolts to fit in . I have done this on several Picco based collari bullets that I have done up. Had same problem as you , the cast is weaker than novarossi based engines.
Hope this helps
Cheers
Alex.Kickass.K
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