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Front beam bolts to head?
Posted: Tue Jan 24, 2006 4:33 am
by Gene-C
What is the diameter of the bolts that hold the fromt beam on to the head? I want to thru bolt with lock nuts on the other side and need to know diameter to buy them tomorow!
Posted: Tue Jan 24, 2006 8:09 am
by Gene-C
i think i used half inch by 6 inch grade 8 bolts with lock nuts
Posted: Tue Jan 24, 2006 5:51 pm
by Gene-C
Did you have to drill the threads out in the head to thru bolt with the 1/2 inch bolt? The original bolts are metric and a 1/2 inch stantard wont thread...
Posted: Tue Jan 24, 2006 6:12 pm
by Reverb
If you have a hardware store near by, take one of the original bolts with you, find a metric nut that fits it.
Posted: Tue Jan 24, 2006 6:20 pm
by TMc2548
I think its a 12mm x 1.5 thread bolt. Not too sure. Its been awhile since I tapped out the head.
Posted: Tue Jan 24, 2006 6:45 pm
by Gene-C
Ok I want to replace them with stardard thread/diameter stainless steel bolts. What would be the equivalent to 12mm in inches? That way I can buy a drill bit to knock out the threads in the head and thru bolt with the S/S bolts and lock nuts.
Posted: Tue Jan 24, 2006 7:05 pm
by Gene-C
yes i drilled them thruogh
Posted: Tue Jan 24, 2006 8:53 pm
by Gene-C
1/2 inch = 12.5mm From my old dual dimensioning days. Wild Mike
Posted: Tue Jan 24, 2006 9:02 pm
by Gene-C
So then a 1/2 inch drill bit will actualy make the hole a tiny bit larger (.5mm) and knock off the threads as well? Then Ill just use a 1/2 bolt right?
Posted: Tue Jan 24, 2006 9:44 pm
by Gene-C
OK ... I was a little off. The 1/2" is actually 12.7mm ... hey it was over 20 years ago. If you're going to use a 1/2" bolt then you will need to drill it over size. You need to use at least a 9/16" drill. The site I just checked said 15%-20% larger hole than the bolt size. Wild Mike
Posted: Tue Jan 24, 2006 10:00 pm
by Gene-C
Why would I want a larger hole than the bolt itself? Any particular reason? I have drilled 1/2 inch holes before and used a 1/2 bolt with no prob...then why?
Posted: Wed Jan 25, 2006 3:11 am
by Gene-C
Alex DON'T use stainless. Most stainless is very brittle and only rated to grade 3. MURZ
Posted: Wed Jan 25, 2006 3:35 am
by Gene-C
Then how do I get a clean look ? Titanium jaja kidding! Will have to go with galvanized then...
Posted: Wed Jan 25, 2006 3:40 am
by Gene-C
I used phosphate coated iridium. Looks slick!!!! Strong too!!!! HEHEHE
Posted: Wed Jan 25, 2006 3:44 am
by Gene-C
And u thru bolted with a lock nut on the other side? Where do you get those bolts from? Local hardware store? Havent seen them.....