my current bolts have stretched , need to replace them what do i get
my current bolts have stretched , need to replace them what do i get
Are they the same as jackplate bolts? http://www.bobsmachine.com/Pro...t.cfm
Marks Props 317-398-9294, 1850 East 225 South, Shelbyville, Indiana 46176 propellerman59@gmail.com http://www.marksprops.com/index.html
not sure what the proper terminology is , but talking about bolts that fasten jackplate to transom
Marks Props 317-398-9294, 1850 East 225 South, Shelbyville, Indiana 46176 propellerman59@gmail.com http://www.marksprops.com/index.html
IMHO, standard size stainless is just too soft, especially for 500+ lb motors. I would upgrade to at lease 5/8" stainless, or if staying with 1/2 ", some sort of grade 8 or better steel.
I too would use the biggest diameter SS bolts that fit in the holes. I assumed 1/2 in is the norm. My bolts are snug in my motor and jackplate.
Marks Props 317-398-9294, 1850 East 225 South, Shelbyville, Indiana 46176 propellerman59@gmail.com http://www.marksprops.com/index.html
I use 9/16 grade 8 bolts
I have had 4 of the ss bolts break
I used 9/16 grade eight when I put the new Detwiler jackplate on.
<table width="90%" cellspacing=0 cellpadding=0 align=center><tr><td>Quote, originally posted by Stroker300x »</td></tr><tr><td class="quote">I have had 4 of the ss bolts break</td></tr></table>
All at the same time, or one here and there?
Marks Props 317-398-9294, 1850 East 225 South, Shelbyville, Indiana 46176 propellerman59@gmail.com http://www.marksprops.com/index.html
+1 to what Kurt said..... Stainless tend to snap!
Jason
He never broke a thing on the Cobra and he drove it a lot. Paul didn't either so I guess it was a tough little boat.
I use grade 9 bolts in 1/2 in. You can get them at Fastenal. That way you have the strength of 5/8 in grade 8 bolts but don't have to drill out anything to make them fit.
"Luminous beings are we not this crude matter." Yoda
<table width="90%" cellspacing=0 cellpadding=0 align=center><tr><td>Quote, originally posted by Stroker300x »</td></tr><tr><td class="quote">I use 9/16 grade 8 bolts
I have had 4 of the ss bolts break</td></tr></table>
Kurt's right, and long ago based on his advice I changed to using these
I also took Kurts advise, used 5/8" grade 8 on transum and static plate to jack plate and 9/16" grade 8 on the motor. I did have to drill the static plate, jack plate and the transum. I had replaced the stainless with 1/2" grade 8 bolts and nuts before going larger. I just didn't want to have a problem. I also added 1/2" thick alum plates on the inside of the transum for added protection.
<table width="90%" cellspacing=0 cellpadding=0 align=center><tr><td>Quote, originally posted by Strokerdean »</td></tr><tr><td class="quote">I also took Kurts advise, used 5/8" grade 8 on transum and static plate to jack plate and 9/16" grade 8 on the motor. I did have to drill the static plate, jack plate and the transum. I had replaced the stainless with 1/2" grade 8 bolts and nuts before going larger. I just didn't want to have a problem. I also added 1/2" thick alum plates on the inside of the transum for added protection.</td></tr></table>
Dean, that sounds like an ideal setup.........
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