Another Hybrid Build

[drf256]

Building a hybrid for a friend. Even though I stopped doing port work, I still have past obligations I haven’t fulfilled.

The build is based upon an MS440 case with a NOS tank. Glock did the powder work.

Well, here it goes. I’ll try to be as instructive as possible for anyone trying to learn the process. Also, it’s being built real time, so it may not be finished for some time.

 

[drf256]

Powdered case and all smalls/bolts/crank put through the USC.

 

[drf256]

OEM PTO bearing and a Nachi for the fly side. I’ve seen an SKF go bad once, so the Nachi is cheap insurance.

 

[drf256]

The build is based on an 046 D jug. The older 046 jugs tend to be a bit wider in the transfer tunnels than the 460 jugs, so I had to relieve both the jug and the case for fitment.

 

[drf256]

The ported jug. The scoring is an illusion. The plating is actually perfect in the jug. Unclear why the pics came out like this.

 

[drf256]

 

[drf256]

More assembly pics.

 

[drf256]

 

[drf256]

This is as far as I’ve gotten.

I’ll add for people who haven’t done a 446 build that a few things are needed to build one that differs from just bolting on the 046 jug:

The jug base and tunnels need to be relieved so that the width won’t interfere with the case mounting plate area and the sides. The flywheel also will hit the tunnel if it’s not relieved, so one can sand the tunnel of spin the flywheel on the lathe and take the edge off right up to the magnets.

The base holes need to be brought in on a diagonal to fit the tighter M5 bolt pattern of the 044/440 case.

The muffler needs a spacer. I believe it’s 3/16 thick off memory. There are spacers for sale, but being I was welding a deflector to the mufkin can anyway, I welded 2 nuts to the lower can holes and drilled them afterwards.

The air dam in front of the top cover needs to be nearly fully ground out to the top cover. The stock air dam won’t fit over the larger 046 jug fins.

 

[huskyboy]

Nice build Doc, been a while since you posted a build thread.

 

[drf256]

For the guys that want numbers.

30 out of the band, base cut for a squish of .018.

100.5 EX roof, 121 uppers, 78 intake.

 

[drf256]

Nice build Doc, been a while since you posted a build thread.

We need one here.

 

[drf256]

Should be done sooner than later.

 

[Sagebrush33]

Nice work! Subbed, as to I've been collecting parts for my own hybrid build. I'm anticipating using a Meteor 460 jug unless I find a better candidate. Are the 460s easier for fitment? This is my first build and I'm in no rush to get it done. Still collecting parts. Most are NOS OEM.

2nd quick question, seems to me a lot of builds use the blue headed decomp valve. Is there a reason for this? Do they leak less?
I noticed your AV mount up top behind the jug is also blue. Never seen the blue rubber before.

Following along this sweet build ........

 

[Duane(Pa)]

Beautiful work as usual Doc! Thanks for the ride...

 

[old guy]

I recently put one together using a new brazilion stihl cyl., I did not have to clearence the transfers, was about .060 flywheel side.

 

[Lightning Performance]

Nice work! Subbed, as to I've been collecting parts for my own hybrid build. I'm anticipating using a Meteor 460 jug unless I find a better candidate. Are the 460s easier for fitment? This is my first build and I'm in no rush to get it done. Still collecting parts. Most are NOS OEM.

2nd quick question, seems to me a lot of builds use the blue headed decomp valve. Is there a reason for this? Do they leak less?
I noticed your AV mount up top behind the jug is also blue. Never seen the blue rubber before.

Following along this sweet build ........

Blue is just stiffer AM parts in rubber or urethane or poly.

Blue decomp caps are usually large Husky OEM offerings with larger bleed ports drilled in them. Some of us modify Stihl or Dolkita decomp valves. I drilled out many.

Looks like a long bar saw with those numbers.
Good stuffs

 

[Sagebrush33]

new brazilion stihl cyl

Which saw model?

 

[Sagebrush33]

Blue is just stiffer AM parts in rubber or urethane or poly

Gottcha. Just like the suspension suppliers in the automotive world. Any source links for saws?

Copy that on the rest of your post. Thanks for the reply.

 

[drf256]