Exhaust Plate Bolts- Unavailable?

Justinde

Justinde

Chief Petty Officer
Joined
Dec 11, 2010
Messages
431
Hi All

I just went to a bolt supplier and have bought some high tensile bolts for the exhaust, but they are 1" instead of 1&1/8th" ( sorry- we use metric in AUS). Will they be OK to use a bit shorter, or do I get longer and cut them down? There is an option of a hex head high tensile in the exact size, but I am wary of a hex head being torques to 70 ft pounds...... What do I do?
 
P

pnwboat

Rear Admiral
Joined
Oct 8, 2007
Messages
4,251
Re: Exhaust Plate Bolts- Unavailable?

I would prefer to use the exact same size. I replaced mine with stainless steel bolts that are the same size as the original. Not sure if that's better, but the stainless are pretty tough. I check them periodically and so far so good. It's been 4 years now. These bolts should be torqued to 70 INCH pounds, not 70 FOOT pounds. That is 7.9 Nm.
 
Frank Acampora

Frank Acampora

Supreme Mariner
Joined
Jan 19, 2007
Messages
12,004
Re: Exhaust Plate Bolts- Unavailable?

Since the holes are quite deep. you can use a 1/4 X 20 BOTTOM tap and tap them further in. Then you can use 1 1/4 long bolts with a washer under the head.
 
beckspop

beckspop

Seaman
Joined
Apr 11, 2009
Messages
74
Re: Exhaust Plate Bolts- Unavailable?

Not sure if they have Fasenal down there, but I got an entire bolt set for my powerhead including exhaust for less than $35 usd all cad plated grade 8. There's a thread on this forum about it with pics. I'm sure they'll ship to AUS...
 
jerryjerry05

jerryjerry05

Supreme Mariner
Joined
May 7, 2008
Messages
17,926
Re: Exhaust Plate Bolts- Unavailable?

iboats say's they have them.Go to the 88/85 site and look under powerhead.$.77 each.For some reason they don't have them on the 125 site.
I think they sell to our southern neighbors.J
 
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