Engine Mock Up. (Ongoing)

[confab]

Those things are worth more than my house..

And all that is cast into it is a single "R" cast at the base. But here's where I got it and the Part Number. (Now BMI Karts.)

The shovel cam plate and shims appear to fit.. But I seem to remember someone saying I had to use EVO parts? I can't see why. Is there a reason?

Rear Cam Lobe hits the case. I just clearance for this, right? Nothing special?

[JBinNC]

I have used that particular cylinder with no issues except that the wrench clearances top and bottom are not well done and need a little massaging so you can put the motor together. Those Taiwanese cylinders are better than the Chinese cylinders also on offer these days, but that is faint praise indeed. I would lower the oil holes as suggested previously and rock on.

Jim

[Dragstews]

Harry Denune's old stuff...

[confab]

I looked at their stroker cranks for shovels. Didn't see anything.

We talking about this?

6. Modify Crankcases for Oil Returning from Heads (All Crankcases 1953 and later) Crankcases 1953 to 1984 NOTE: This operation is necessary on any Sidewinder® installation for knucklehead, panhead or shovelhead engines where oil from cylinder heads is being returned to crankcases via oil return passageway in cylinders.

While cases are still bolted together, perform following steps:

A. Place cylinder base gasket on cases and mark and centerpunch oil return holes. Make certain you have gasket on correctly by checking oil hole location with each Sidewinder® cylinder.

B. Drill 1⁄4" diameter holes perpendicular to gasket surface 5⁄16" deep. See Figure 1, next page.


C. Disassemble crankcases and bolt front and rear cylinders to drive side crankcase half.

D. Drill through oil return hole in cylinder spigots into crankcase approximately 5⁄16" deep to connect with holes previously drilled using 1⁄4" diameter taper length drill.

E. Unbolt cylinders and remove from crankcase. Use file to break thin web of material at gasket surface. File slots to width of drilled holes.

[JBinNC]

No, those are Sidewinder instructions. You need the shovel stroker flywheel instructions.

Jim

[confab]

Found it.

https://assetcloud.roccommerce.net/files/_sscycle/5/7/6/51-1018_flywheel_btstrokerkit_20130228.pdf

This is very similar to Dragstew's fix.

[Dragstews]

It's the same specks for lowering the drain holes ...



Lots of Folks won't bother with drilling the holes in the jugs, they will drill all the way though the case to break into the flywheel cavity ..

I'm not a fan of doing it that way ...
Much rather take out as little meat as possible from the case ..

[confab]

Screw it.. If it works with strokers, it should be fine for mine.

[JBinNC]

Found it.

https://assetcloud.roccommerce.net/files/_sscycle/5/7/6/51-1018_flywheel_btstrokerkit_20130228.pdf

This is very similar to Dragstew's fix.

Yes, what D pictured earlier is the process, but having the instructions with dimensions, etc. is helpful.

Don't forget, you have to have drain holes in the base gaskets, and they have to line up. I've seen that simple step messed up more than once.

Jim

[confab]

Thank you both.

Any advice on using the EVO cam?

I can just clearance the case for the back lobe and use shovel cam backing plate and shims?

[JBinNC]

It's the same specks for lowering the drain holes ...

[ATTACH=CONFIG]100754[/ATTACH]

Lots of Folks won't bother with drilling the holes in the jugs, they will drill all the way though the case to break into the flywheel cavity ..

I'm not a fan of doing it that way ...
Much rather take out as little meat as possible from the case ..

I am solidly with you on that. No sense in weakening the cases unduly.

Jim

[Dragstews]

Base circle is larger on the Evo, in turn making the angles a bit different on the taplet blocks..

[JBinNC]

Thank you both.

Any advice on using the EVO cam?

I can just clearance the case for the back lobe and use shovel cam backing plate and shims?

The cams are essentially interchangeable as far as installation in the case. Shovel hardware preferred.

Jim

[confab]

Base circle is larger on the Evo, in turn making the angles a bit different on the tablet blocks..

I got EVO blocks and lifters?

[Dragstews]

There is a plus side to running Evo stuff ... The rollers are also larger ..
Rocker arm ratio is diff. too...

And ....
If you run the Jim's or S&S Shovel rocker arms you can get rid of your outside oil feed line going to the rocker boxes... You'll need pushrods that allows for oil travel to the arms...

Some Folks will use Evo arms, but they will require to be cut down since they are longer than the Shovels..