SoCal Jet Boats

Tech Talk => Engine Mechanical / Electrical => Topic started by: SomeThingWilder on May 21, 2015, 10:51:09 PM

Title: BBC Engine mount bolt length
Post by: SomeThingWilder on May 21, 2015, 10:51:09 PM
I want to buy the right hardware to mount my engine to a rail mount kit for a BBC.  I assume stainless steel  hardware is the way to go. What's length / thread / and material for bolts shoukd I be looking for? I have the stringer hardware  just need  to know for the angle mounts in the fronts and angle through the rear + 3/8 aluminum  plate.  Sorry for my newbies questions
Title: Re: BBC Engine mount bolt length
Post by: GT Jets on May 22, 2015, 08:06:02 AM
I personally do not like stainless steel hardware in iron, unless it is of a high quality and grade.

I will either use Cadium plated grade 8 (which is getting harder to find) or black oxide grade 8.

As for the length, it really depends on what you are bolting through.

The rule of thumb is 1-1/4 times the bolt diameter into the threads. And a minimum of the threads showing out of a nut if through bolted.

I use blue Loktite like it's free, not necessarily to lock the threads, but it seals then up and keeps them from rusting.

Hope this helps.

GT
Title: Re: BBC Engine mount bolt length
Post by: rawrtuna on May 23, 2015, 01:17:34 PM

I personally do not like stainless steel hardware in iron, unless it is of a high quality and grade.

I will either use Cadium plated grade 8 (which is getting harder to find) or black oxide grade 8.

As for the length, it really depends on what you are bolting through.

The rule of thumb is 1-1/4 times the bolt diameter into the threads. And a minimum of the threads showing out of a nut if through bolted.

I use blue Loktite like it's free, not necessarily to lock the threads, but it seals then up and keeps them from rusting.

Hope this helps.

GT

X 10,000 on everything GT said!


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