Tech

November 3, 2018

Shovelhead frame repair in the top neck bearing area

The bearing race was way too loose on the top of the 1980 frame for an unknown reason, and it need to be repair, so my friend ask me to take care of it for him, he heard that I have done something similar in the past,here is some pics of the steps I have taken .

So I pull out a special tool I did years ago to correct a similar problem on a Evo frame, did a few modification to adapt to the shovelhead frame, the goal here was to machine the top portion in perfect line to bottom bearing axis with a guide in the bottom bore and add a bushing flush to bottom of top bearing area ,the boring bar will have a better stability and the bore would be possible

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Filed under Other, Random Ideas, Resources, Saddlebagrail's blog, Tech by saddlebagrail

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May 4, 2018

Broken primary lips repair on a Evolution

Hi to all

 

I got this case to do a big bore strocker kit with,blast both case have the lips that was broken build up ,now ready to do the repair,here with pictures how I did this.

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Filed under Engine & Transmission, Random Ideas, Resources, Saddlebagrail's blog, Tech by saddlebagrail

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February 21, 2018

How to correct a machining error in oem Harley Davidson head bolt thread drill too deep

Hi to all

Sometimes manufacturers make maching mistakes and it take a while sometimes to found the issue,and many often left facory like that and sometimes even worst,quality control was almost non existent in the past,often today .

Here it is ,you can barely see a black spot in the bottom of the thread(holes going throught drain hole cavity),the hole was drill too deep from factory and oil coming to drain to the bottom of the cylinders was sligthly leaking the head bolt thread all the way to head gasket,and into combustion chamber,so this is what I did to correct the problem.

 

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Filed under Engine & Transmission, Motorcycles, Other, Random Ideas, Resources, Restoration, Saddlebagrail's blog, Tech by saddlebagrail

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