1216 Build with APE Hardware Issues

[rider384]

Hi all, this is probably a really stupid question so I apologize in advance, just want to make sure I'm getting this all correct. 

9/12 of the APE head/cylinder studs work perfectly, no issues. Two of them are too short (top left and right studs in the photo). No way to get enough threads on the head nuts to get on, much less torque down. One of the studs is also longer than the others, and even with a factory washer there it won't crank down enough to clamp, the nut just bottoms out.

I'm wondering if I'm missing something really obvious here, or if I ordered the wrong stud set. I ordered "CS1127GSX " for the studs and "CHN1000k" for the nuts. 

Thanks in advance

 

Edited October 2, 2022 by rider384

[Gixer1460]

Can't answer directly but the items you've got 'appear' to be correct but this image of the studs seems to indicate most all at one length with two slightly shorter and two even shorter - maybe 6-8mm max difference between longest to shortest, certainly no single odd one!

[rider384]

Interesting, wondering if they were packaged incorrectly as I have a single long one. I got the two shorter ones figured out thanks to the workshop manual, I'm going to pull all of them and measure to make sure either way. 

Also, semi-related, should I be using factory torque specs with this bit of kit or is more torque recommended?

[Gixer1460]

Std. torque can be used if the engine is essentially stock, although if higher cylinder pressures are envisioned then higher torque is easy to add - will go 60 - 70 ftlbs but pulling case threads could be an issue.