6.5 Girdle

[quickv6]

These are pictures of the prototype girdles. They fit on an otherwise unmodified motor, including the pan. The final version still does, but is 3/4 inch thick instead of 5/8 inch. All five mains are covered. Unfortunately, we don't have pictures of the 3/4 inch version because it is 1000 miles into use on the truck, and pictures weren't a priority when the engine was prepared. It seems to work fine. Of course, it takes much longer than 1000 miles to test a girdle.

How will that support the caps if the girdle is not tied into the block?

[Robyn]

The end caps 1 and 5 are very strong as they are fastened to the ends of the block where there is massive amounts of material and the girdle bars tie the whole lot together.
The best way of course is to do the complete girdle with the cross bolts and anchor everything along the way.

This simple tie bar is still a very worthwhile addition to any 6.5.

One thing that is absolutely a step in the right direction is to lightly chamfer the bolt holes in the block on all the mains especially the center ones.
The ragged sharp edges in the block are a perfect send off to getting cracks started down the outer bolt holes..

All really great stuff in this thread. Good tech and a step in the right direction.

Robyn

[82blazer]

In all the pictures posted in the thread (oil in the coolant) all the cracks seen to follow corners in the machine work ie. the piston bore. Robin is rigth that a sharp corner will not stand the pressure of a radius corner. The stress is spread over a larger area. All we can do is try to lessen the damage by rounding and bracing. Blazin has some personal value due to time spent with my son. So it is worth it to me to try. Question: Is the pattern on the mains the same on a 6.2l and a 6.5l?

[opto]

I would really like to have more information about the roller rockers shown
Which parts were used?
What machine work do I have to do?
Anyone know where to get this info??

[More Power]

Jesel roller rockers were used. The original mounts on the head need to be machined flat to accept the Jesel rocker bases.

The valve covers need to be modified to accept the increased height of the rocker adjusters - or do as Andrew did, and machine a 1/4" aluminum spacer to raise the covers (fits between the covers and the heads).

Jim

[opto]

Thanks for the info, but more specific which Jesel rockers?

Yes , to machine an aluminium spacer would defenetly be the way to go.

Would it be possible to get in touch with Andrew?

[opto]

Sorry to be bugging you about this but....

I had a look at the Jesel web page and couldn't find any rockers that looked like the ones used so I asked Jesels tech help to identify them. Answer is that this is not a Jesel rocker setup.

What could it be??

[93drw]

Is the stud girdle still performing well? Did you make or are you making kits for sale. I can build my own but if someone has already done it and it works why rock the boat?