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Forum: Technical Q&A

30-09-2014, 08:20 PM

Replies: 16

Top Mount Bolts Snapping

Views: 2,596

Posted By Frenchbruno

May be comparing your broken bolts with the...

May be comparing your broken bolts with the pictures on this renowned bolt maker you can have a path:
https://arp-bolts.com/p/technical.php#p7TPMc1_3
Hope you still have the old bolts for...

Forum: Technical Q&A

30-09-2014, 03:11 PM

Replies: 16

Top Mount Bolts Snapping

Views: 2,596

Posted By Frenchbruno

p.s if your worried about vibration why are the...

p.s if your worried about vibration why are the rod bolts in your engine ultra high tensile, pretty sure there's more vibration there.

No, I've no vibration on my engine connecting rods, If it is...

Forum: Technical Q&A

30-09-2014, 12:23 PM

Replies: 16

Top Mount Bolts Snapping

Views: 2,596

Posted By Frenchbruno

METRIC or UNC

[/COLOR]
Not exactly ROSSM!
I've a merc racing engine too, 250 XS mod 2004 and the upper mount bolt are stamped grade 8.8, and it's original bolt form MERC racing factory, after 10 years of use...

Forum: Technical Q&A

29-09-2014, 01:02 PM

Replies: 16

Top Mount Bolts Snapping

Views: 2,596

Posted By Frenchbruno

2 possible references and size availables, depend...

2 possible references and size availables, depend the serial number of your engine.
On one generation they are UNC and on the other they are Metric
for the metric type the steel grade is 8.8
for...

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