Panhead, Tapered vs. Splined, Belt aligment.

[Dragstews]

...Getting there...



Done with the Rev-Tech breather gear modification ....

Now on to building the crank up...
_________________________________________________

Say .... Speaking of "Right" .... Lol

I came up with a NOS set of S&S 3-5/8" Stroker pistons and also have a brand new set of Shovel 3-5/8" jugs that are also for sale....



Being your cases are early STD stuff, there is a world of beef in them that's begging for big cubes ...

Now that you have the STD dual bolt pattern heads.... Be "Plug & Play"

Cases and heads will need to be bored for the Big Bore jugs and a little back-up work to redo the balance....



Think about it (98 Cubies) Take your time ...

(But not too long, was about to build the crank and install it in the case by the end of the day)

BTY ..... One more thing .... .../// https://youtu.be/szwclmmKwLg \\\...

[gorgeous]

I'm good with the current setup. 88" will be enough for me. If I'm going dump a bunch more money into this thing it will be on a magneto which isn't cheap either.

[Dragstews]

You be the Boss, Boss ....
Just thought I would throw that out on the table being both of those item are being sold way below dealer cost... $$$
____________________________________________

550 ft. lbs. should keep it from working loose..



300 ft. lbs. on the crank pin nuts. Trued up with no movement on the needles...



I wouldn't be using 550 #'s of torque on what was once in these flywheels ...
(Shoot ... Don't think I own a punch large enough to throw on that much torque .. )



Didn't get around to installing the crank into the case ...
Maybe today that will go down... ??

[gorgeous]

[Dragstews]

It was more like .... "Hulking Out" .. !!



Speaking of the Green Guy, sure wish he was here to spin the handles on the bearing press...



May see a need to pull it back off and add shims under the bearing in order to see the rods being centered to the case bores...

I hope not cause it's a chore to R & R the bearing... !!!

Yup .... It needs to be shimmed ....



Using a Jim's tool to pull the bearing off does no harm to the bearing...



Think I'll add four .010" shims and see how that will look...

[Dragstews]

Whoa .... Whooooa

These are the parts that came out of this motor ... In other words it's been running like this ...



The cam is a AP "C" grind ...
C.B. gear is bone stock Oem ... (I think, maybe A/M)

Frog Hair would be how much room is there....

Did get a .003" feeler gauge in between them ... And that was tight !!!

[gorgeous]

haha, I take it that's not to "factory" spec? Have they made contact at some point or are they still serviceable?

[Dragstews]

The Boys that stuck that cam in there was living life on the edge ....
They must have been ....

[gorgeous]

Two things look funky to me. The cam lobe looks close to the breaker gear but that could just be the angle of the photo. You're referring to the cam gear being too close to the breaker gear, yeah? The fix is to shave a off a bit of the breaker gear or shims? That 400 thou is the minimum allowable width of the gear that is remaining after it gets a haircut? I'll have to go home and get out the book do some reading so I can follow along better.

[Dragstews]

I did do a cut on the case side of the C.B. gear..
Using the Oem spacer that was .526" thick I also added a .050" shim to the front side of the spacer.
Dial in the end-play from the cut on the gear...

Working on the gen idle gear at the moment ....


__________________________________________________ _

Here's the gig on the C.B. gear ...

Trimmed the back side and attain the needed end-play ...
Cam was still playing tag so did a trim job to the face of the gear...
Didn't want to take anymore off the back of the gear due to having the end-play already dialed in...



Being I had the gear in the lathe and set up a tool post grinder went ahead and gave some room for the swing of the front jug exhaust cam lobe.....

[gorgeous]

Is the reason for the cut on the cb teeth because the cam is bigger(105 thousandths?) than stock? or is it indicative of something else going on in the case?

[Dragstews]

Is the reason for the cut on the cb teeth because the cam is bigger(105 thousandths?) than stock? or is it indicative of something else going on in the case?

I have gave that much thought..
The only thing that was changed out was the cam cover ...
Here's what I'm thinking went down:

The new cam cover had more of a bushing thickness than the old due to being new, this moved the cam further inboard.
After a super hard look at the C.B. gear I now think it is a repop .. And not a good one at that...
Seems that it does not fit as well as the Oem of the day...
Has a shoulder on the case side of the gear that keeps it from sitting where it belongs..

What I would like to do is to get one from S&S (It's already clearance for the swing of the cam lobe) and redo the spacing of both the C.B and Gen Idle gears...

[gorgeous]

Im going to let you make that decision. If you deem that a worthwhile swap im on board. Doesn't seem like a good place to try and save a buck. If you think it's ok as is then I'm fine with it. But if you have reservations about it, then change it.

[Dragstews]

Never have I seen the need to trim on the face of a C.B. gear.... This was the first ....

[gorgeous]

Do you have another cam cover you can test it with? I'd rather not run anything that's suspect so go ahead and order the part if you need to. Just more curious as to why it's that way.