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Old 06-02-2011, 10:36 AM   #1
Dr. Benway
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Default Shovel crossover oil line...

Is there any reason that it needs to be a hard line?

While replacing the little rubber gaskets I thought in this simple crossover you have two rubber donuts, hard line, two fittings and *four* threaded joints, all within 2 1/2 inches or so.

Is there any reason there couldn't be two barbs threaded into the rocker boxes with a simple rubber line between? I can't see that it's a high-pressure joint, and the rubber certainly could deal with whatever heat expansion happens there.

Thoughts?
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Old 06-02-2011, 10:40 AM   #2
Destralo Roach
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Default Re: Shovel crossover oil line...

Remember the heads move away from each other when hot, but yeah ya can do that, make shure the ID is the same size as the OG hard line so ya dont over oil the rockers.....Roach.

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Old 06-02-2011, 10:43 AM   #3
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Default Re: Shovel crossover oil line...

Quote:
Originally Posted by Destralo Roach View Post
make shure the ID is the same size as the OG hard line so ya dont over oil the rockers
Ahhh...good point, I wouldn't have considered that. I might just be the guinea pig for this.
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Old 06-02-2011, 11:21 AM   #4
=JL=
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Default Re: Shovel crossover oil line...

I've seen plenty of braided lines between the rocker covers. A flexible line makes more sense to me on a motor which vibrates a fair bit, though the stock line seems to hold up fine.
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Old 06-02-2011, 11:29 AM   #5
Von Zacho
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Default Re: Shovel crossover oil line...

Do-able AND done-able. My braided line gave up on the way too work a few weeks back, grabbed some fittings and hose from work, pulled the old switcharoo and here we are. It's seen a few hundred miles at least since then and I have no complaints. Almost bought the pricey 15 dollar hard line kit the other day just for the rocker to rocker line but said fuck it.
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Old 06-02-2011, 12:00 PM   #6
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Default Re: Shovel crossover oil line...

My friend has braided rubber on all the oil feed lines and its has been like that for a couple years. If you can use copper , you gotta be able to use rubber.
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Old 06-02-2011, 12:07 PM   #7
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Default Re: Shovel crossover oil line...

The stock setup does work absolutely fine for the most part...but I find you're about 1/64th of a turn away from OK to drizzling oil. Of course it's while the bike is warming up, and you've got all your gear on.
Then it's time for the Donut Rigamarole, and then I'm paranoid watching the damn thing for leaks while I drive, which gave birth to the hose idea.

Necessity, invention, all that. Thanks gents.
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Old 06-02-2011, 12:19 PM   #8
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Default Re: Shovel crossover oil line...

I always use the braided kit on any shovel I build, it comes with the crossover and the feed both braided. I think it's only about 20 bucks, good conections at each end, some teflon and your in business.

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Old 06-02-2011, 12:29 PM   #9
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Default Re: Shovel crossover oil line...

How does i.d. of the crossover line have any effect whatsoever on potential to over oil the front rockers? It's fed by the rear head after the rear valve train has been oiled. If anything, a larger crossover will reduce pressure at the rear head, no? I mean, flow rate has already been limited at the rear feed line. That said, it gravity drains anyway so who cares if more flow than stock reaches the rockers? Just curious.

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Old 06-02-2011, 12:58 PM   #10
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Default Re: Shovel crossover oil line...

I did away with all of them with the JIMS through-the-pushrod oilers.
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Old 06-02-2011, 01:19 PM   #11
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Default Re: Shovel crossover oil line...

Quote:
Originally Posted by Skibo View Post
How does i.d. of the crossover line have any effect whatsoever on potential to overpol the front rockers? It's fed by the rear head after the rear valve train has been oiled. If anything, a larger crossover will reduce pressure at the rear head, no? I mean, flow rate has already been limited at the rear feed line. That said, it gravity drains anyway so who cares of more flow than stock reaches the rockers? Just curious.
Me and Benway just talked about this on PM's. My understanding is it shouldn't/wouldn't be a problem. Mine seems to be just fine, knock on wood, famous last words and such. As I ride my GREEN bike! Thats another thread though.
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Old 06-02-2011, 02:06 PM   #12
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Default Re: Shovel crossover oil line...

Quote:
Originally Posted by Englishman View Post
I did away with all of them with the JIMS through-the-pushrod oilers.
I've heard good things about them but it kind of takes away from the Shovel look.
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Old 06-02-2011, 02:11 PM   #13
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Default Re: Shovel crossover oil line...

...plus, $1,000?
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Old 06-02-2011, 02:26 PM   #14
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Default Re: Shovel crossover oil line...

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Originally Posted by Dr. Benway View Post
...plus, $1,000?

Yep, Yep, I'd love some Jims but damn the dilema of spending a grand, or having two lines visable was quickly solved......

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Old 06-02-2011, 02:30 PM   #15
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Default Re: Shovel crossover oil line...

Isn't there some swap magic you can do with gen-u-wine Evo parts to achieve the same end (through pushrod oiling)?
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Old 06-02-2011, 02:30 PM   #16
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Default Re: Shovel crossover oil line...

I like the look of the hard lines myself but my bud says he did it for the ease of installation and no leaks since. He builds motors from the pin up.
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Old 06-02-2011, 02:35 PM   #17
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Default Re: Shovel crossover oil line...

E'man - not everyone gets the famous discount. Personally I can think of a mess of other things to spend a grand on in an attempt to make my shovel look like an evo. I agree with bustedlifter on not losing the oil lines. If nothing else, I'd just run braided to each head off a y-block and do away with the crossover entirely.
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Old 06-03-2011, 10:05 AM   #18
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Default Re: Shovel crossover oil line...

I have been running a rubber oil line on my'77 for over a year now with no problems.

I found 2 barbs with the right thread at my local ACE hardware. much less hassle than stock and can be repaired anywhere.
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Old 06-03-2011, 10:22 AM   #19
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Default Re: Shovel crossover oil line...

As already stated, the diameter of the line has little (probably only theoretical in terms of resistance offered) effect on the amount of flow.

However, the diameter IS important for another reason. Consider the volume of the lines that must be filled (from empty) before the oil reaches the front exhaust rocker. More volume means more time before oil gets to where it needs to go.

When you park a bike hot and leave it sit, the oil drains due to gravity, albeit slowly.

This may be less important on the crossover than the up-feed, but it's a factor nonetheless.

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