This is going to be a Fun Motor Build....

[Dragstews]

The knuckle pic makes me weak....

Me too Vonhatch, me too...!!!

The thought of it being on a rusty-ass container ship makes me cringe.....

Hope the seas are calm for it's journey ....

Seeing green water breaking over the bow is a spookie feeling...

http://youtu.be/4Nxeav0ivhM

(Been there, done that)

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On the XL...
Found the trans trap-door bolt holes with coils....



I'm going to add two more, making for six bolts holding the door to the case...



This motor will be making some serious HP...
A bit of overkill in this area is welcomed..

[Dragstews]

Moving to a diff. area of work to do is the Cam cover that came on the 75 XL..

This puppy is rough as 10 miles of gravel road...

Got a few welds done around the shift shaft hole, probably from a wadded up chain..
And many miles are to be seen from looking at the cam bushing wear...



I would like to find one that is in better shape....
But being the outside look is not a concern, going to tighten up what we have...

Been chromed at one time....
The platers didn't cover the bushing during the plating process and build up can be seen on the bushings...
Two of the bushings have severe cutting on the shoulders, all are on the high end of running fit specks of the ID....

Being we got some Bad-Boy bump-sticks going into this build, will replace with new and line-ream to size....

Using a Snap-On blind hole puller slightly modified for the ID of the bushings, pulls them out easily....



Going to leave the pinion bushing in the cover for now... That will help with aligning the cover to the case when line-reaming the other bushings..
Once they have been reamed, will install the pinion bushing and line-ream it to size....



The gasket surface had some chrome flaking off in a few areas..
Yes it got plated too.



Did a bit of sand down on the head-surfacer just to make sure the cover is flat and got rid of all the plating, don't want to see any leaks...

[Dragstews]

Now on to the install....



Ordered Jims tappet blocks and Big Axis tappets...
Wanted to beef this area with the best of parts that are on the market...
They will be doing some mega work...

Heating the cover in a oven and using Co2 on the bushings will help the install go down much easier...



Was a nice interference fit going in even with the heating and freezing of parts...
Used some green lock-tight too...
Next to do is the dowel pins to install...



The red dye that can be seen was to show where the old dowel pin holes are at...
That's only to keep me from drilling the new holes close to them...

Done with dat.....



Dowels are installed to the proper depth and penned in...

Next is to bolt on the cover to the right case half and ream to size..

With a gasket in place loaded number two cam ream in the case, that one has to be installed before the cover can go on due to the cutting head is to big to be inserted from the flywheel cavity of the case..

Cover installed and using the pinion ream as a guide tighten down to specks (90-110 inch pounds)



A few turns of the reams in each hole and done deal....
......(Still looks like 10 miles of gravel road..!!!)......

[Dragstews]

All cams spins freely and have a very, very nice fit on all gear fitment (gear-lash)

Now for the pinion bushing.....

[fdr]

Wow, not much taper on those cam profiles is there? Ha.

[Tattooo]

Wow, not much taper on those cam profiles is there? Ha.

A lot of duration!!!!! Easier to crank if it is a kicker!!!!

[Dragstews]

Well....

If ya going to be a Bear..... Be a "BIG BEAR"

http://youtu.be/6-W7gdGeFV8

(I would have soiled me nickers)

Word to the wise......About Bears...!!


Some of Jimmy Leineweber's best....
I was surprised at how well the gear lash was, he has't been making the billet Sportster cams for very long.
For the Sporties the "Grind off, Degree in and Weld on" lobes was the norm...

My hat is off to the Gent for putting these on the money....



Now if the pinion gear to cam gear falls into that same speck...
(Got a bunch of work to do before I will see what is what there. Got to line-lap the pinion race and fit up oversize bearings, then build the crank assembly and install it in the case, load gears and take a look. I got a feeling it will be fine too)

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Well.... So much for that shit...

Had in mind of reusing the pinion shaft...
Just now broke down the old OEM crank to grab it up....

That an't going to happen, cause the damn thing was wore out 20 years ago...
OK... More parts for the To Get list..

Will be getting a Jims pinion shaft, also going replace the case race with a Jims....
Should be able to use STD size bearings with a new shaft and race after line-lapping...




(A little more than 10 miles of gravel road is to be seen here.!!!)

[ZenerDiode39]

Nice

[ZenerDiode39]

Really NICE

[Dragstews]

Thanks....

Some of it is nice, and some of it ain't so nice, like this oil pump...



It's locked up solid....
Dug out the big pieces, ran it though the jet spray, still had alot of cutting in it...

Wanted to take a look at how bad off the blow-up did to it,



Didn't do it no good, that's for dang sure..!!!

The feed gear dowel pin was about to shear and deep grooves are cut into the body.... Breather valve and bore took a whooping too.

Think it's time to add another part to the wish list...

Will be setting the new pump up to the XLR specks.... This improves lower-end breathing for strokers.

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And now for a bit of humor... Click at your own risk...

http://youtu.be/x8CWOCJ1kPY

[Dragstews]

Got the new Jims case race sweated in, new Jims pinion shaft...
Grabbed up all the bearings that I had for doing a plug fit....



But....

Being a new race is in the mix, going to set up a dial-bore gauge and see how much the race is under size....
This will give me an idea of the lap time it will take to get to the running fit of .0008 to .001 ...

Should be able to fit to STD bearings....

The formula is =

Shaft...................................... = 1.000
STD bearings.. 0.1875 times two = 0.375
Running fit ............................. = 0.0008
All that added up come to ........ = 1.3758

That sum is the ID finish size of the race...

(Got two tenth of one thousandth to get within running fit speck.... Kinda reminds me of Frog Hair..!!!)

Did a few spins with the lap to see how well the lap pattern looked....



Got right at 0.0013 to come out ... Going to be spinning the handle for awhile looks like...

Pinion shaft bearins are now fitted...



In the photo is the old race... It was toast....

Next to do is the jugs... Got to lower the oil return holes and bore them to .010 over and then mock up the crank for checking the rod swing...

Some grind time will be needed on both the jugs & the crankcase for this stroke and the beefy S&S rods...

[Dragstews]

Any of y'all like to see a 37 U motor get rebuilt...
Took in that job today....

Owner said it's a bit rough...
But the lower end is still altogether ....
Top-end ..???... Sunk seats, bores whacked, broke fins ect... Hard life, sounds like...

[vonhatch]

Love to see it!

[Tattooo]

Damn right I do!!!! Merry Christmas my friend!!!!!! You too Hatch!!!!

[bobscogin]

Any of y'all like to see a 37 U motor get rebuilt...
Took in that job today....

And you ain't got pictures up yet? Slacker!

Bob