Wicked 090

[Deets066]

Sure looks that way, dialed in pretty easy after @srcarr52 suggested this method. Definitely the way to go. It’s about 4 tenths off so I’m good with that

 

[Dub11]

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Success

Glad you're staying hydrated......

 

[Deets066]

Glad you're staying hydrated......

Yeah, it’s all that was in the fridge.

 

[Dub11]

Yeah, it’s all that was in the fridge.

Could of been Budlight?

 

[Deets066]

Could of been Budlight?

It all tastes the same

 

[EvilRoySlade]

@Deets066 I have the tracking number but it hasn't moved yet. Hopefully not too long.

 

[srcarr52]

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Success

Man you have a lot of setup blocks and clamps!

I used a jack screw under both sides.

 

[Deets066]

Man you have a lot of setup blocks and clamps!

I used a jack screw under both sides.

View attachment 230963

I didn’t have room under the front for a jack, I do have one in the back.

I’ve got quite a bit to remove, sure don’t want to have to cut it 5 thou at a time

 

[srcarr52]

I didn’t have room under the front for a jack, I do have one in the back.

I’ve got quite a bit to remove, sure don’t want to have to cut it 5 thou at a time

I think I took 0.1" in two cuts... 0.095" first cut and a 0.005" finish pass.

 

[Deets066]

Mag does cut pretty easy. I’ve got about 0.3 on top and 0.375 to bore the case

 

[Deets066]

Big Ol’ hole

 

[huskihl]

Even my hands would fit in there

 

[Deets066]

Even my hands would fit in there

Both of em

 

[Canadian farm boy]

Even my hands would fit in there

And clap.

 

[Deets066]

Well I spent a couple hours on the 84 today, took lots of pics for those of you that want to follow along and see how I go about how I do this. Doesn’t mean I’m right, and I’m no machinist.


After I was indicated in, I milled my sides down and touched off on the deck. Just skimmed all 4 sides.

 

[Deets066]

Another .003 down but don’t have a full mating surface yet.

 

[Deets066]

good mating surface with another .0025

 

[Deets066]

Now that the deck is good, I need to bore the case to fit the 70mm piston. I’ll use a boring head, so I need to center the case to the quill.
Touch off on one side and zero my x.
Then I run to the other side and touch off.


Check my DRO


Half it.


Run it to zero and I’m center on my X. Then repeat for Y

 

[Deets066]

Little math and measuring off of my setup shaft and I have my depth of cut for the piston skirts to clear the case.

 

[Deets066]

Blue the deck to make layout easier.
Put the boring head in, touch it down on the deck about a half thou. Then spin it by hand and adjust it out to give me 72mm.


Then flip her on and cut down to my measured depth.


I did have to bring it back in because the back of my boring bar would bottom out on the bearing boss. So I stepped the cut .1