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Discussion Starter · #1 ·
Hey Guys I installed a new finned oil rocker feed on my 73 t140 and since I installed it my bike started smoking out the pipes like crazy ( was not doing it before ) I added a little bit more length to the feed line because the back of them have to do a bit of an "L" but thats all that is different..

Am i missing something here? Makes no sense to me..

This is what I installed : http://www.lowbrowcustoms.com/index.php?l=product_detail&p=363
 

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the easy thing to do is put the stock rocker feed back on and see if that makes a difference. it could be just a coincidence.
 

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Discussion Starter · #3 ·
I did, and believe it or not the smoking went away.. it burned off some oil, then was back to normal.. I have no clue.
 

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Sounds like too high a flow, if you do not run an original oil tank you need a 3 mm orifice on the line to the head. The flow should be 50/50, return to the oil tank and to the rockers.
 

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I agree...maybe less restrictive and allowing excessive oil to be dumped on valve train....can look in exhaust/intake ports to see if valve stems are wet....
 

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There you go...the entire Triumph oil system was a 50 year long trial and error design, from the oil pump to the oil tank,to the size of the line and ending up at the rocker feed.
Anytime you modify one thing, you change many things.
Aftermarket parts that work also have to pass the test of time.
you may be able to make a restrictor and put it in line, but it will also be a trial and error test.
 

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I'm with Tony on this one. I had to play around with the size of my restriction off my custom tank. I actually had the opposite with my finned cooler I would have to crack the rocker feed nuts to get oil up the rocker feed line. I finally went back to stock rocker feed and actually used the set up from 7metalwest he uses on his vertical tanks and this worked really well as well as opening up the whole to t
 

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Discussion Starter · #9 ·
WOW! thanks guys... This is awesome.. @scottto93 Yes the valve stems are wet.. @tgb3040 The bike is a OIF, so do you think i still need a 3mm oriface?

Tony the Torch, you are awesome, thanks so much..
 

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"The bike is a OIF, so do you think i still need a 3mm oriface?"

Just had a look at your blog nice looking bike, The restrictor should be part of the oil return line that is part of the frame, unless it has been cut off.

Personally I think you should be looking at other things, no restrictor ? the oil will take the easiest path and return to the tank = no feed to the rockers at all (the opposite of what you have)

Had Head work ? screwed guides ? got those silly helical groove guides ? is the original oil feed blocked ? and the new one is allowing oil to the rockers ?, got an in frame oil filter like the Timewarp one ?

Ohhh and whats doing with that crankcase breather setup ? you changed anything else with the breathing circuit ?

Cheers

Drew

Cheers
 

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Just had another think about it while on the crapper....
Maybe refit the original & block the return at the tank end with your finger, see if you can get it to smoke, if not crack the nuts and see if you are getting oil to the rockers at all.

Just a thought.

Drew
 

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The restrictor should be part of the oil return line that is part of the frame,
Yes, don't be mistaken. He is correct about this. You don't restrict the oil to the rocker. It's the restriction of the oil return line that helps pump the oil to your rocker.

Maybe your OIF restrictor was semi blocked thus pumping too much oil to the rocker.
 

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Discussion Starter · #15 ·
Hmm Interesting thoughts @DREW71, I almost should put a clear line and run both the new and oil feed and see whats happening.. I dont think the old feed was blocked as i tested it and its fine. There is a little nob off of my OIF where the line meets the OIF frame near the oil return. I think thats is the restricter no? Do you think I should try a few different I.D lines? anyone with an OIF and the finned feed recommend an I.D?

Also @laDolce I have added that breather as I picked it up for free, brand new. Looks and works ok, The other thing that I changed was the new pipes in terms of breathing.

I will take some pictures of the set up tomorrow and post them on here..

Again cant say enough how much I appreciate the help on this, its confusing the hell out of me..
 

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There is a little nob off of my OIF where the line meets the OIF frame near the oil return. I think thats is the restricter no?
Not in my experience, the "restrictor" is the size of the hole drilled in the end of the return line about a quarter inch below where the line is braze welded shut.

There is no actual physical restrictor to speak of, I just tried to take a pic but cant get a decent shot in there.

Same deal with the rocker, the shaft itself is the restriction & will be more or less restricted depending on wear & if you have the springs and washers the "correct" way round or the factory way.

Like Tony said there is a lot to the plumbing on these, sometimes its more art than science.

Rocker box breather hooked up to the breather in the frame up under the tank ?
have you run a wet oil pressure gauge ?

Cheers

Drew
 

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Discussion Starter · #17 ·
I havent Run a wet oil pressure test yet, but that was what I was working on next for the bike, I was just in the process of finding all the hardware and copper line for a 100psi gage I got.

I am going to test a few different I.D braided lines tomorrow and see what happens. I'll keep the post posted..
Thanks again Drew
 

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I have a OIF and running clear lines, but not the finned feed. I love the look of 'em though!
So up there below the oil cap, on the right hand side should be a "T" shaped tube. One barb faces forward (goes to the rockers) and one faces down (return from sump). The line facing forward is smaller and that serves as the restrictor.
Can't remember the diameter of the lines, but wanna say it was like 3/16" I.D. for the rocker feed, and that's where I used the clear. I got mine at Rask Cycles. He's a pretty gruff dude, but really knows his stuff. Maybe give them a call and if he knows you're gonna order something, he is usually pretty helpful. Or call Moore's Cycle Center. That guy knows a lot too and probably also has the clear line.
The problem with that clear stuff is that after the oil starts to flow, you can't see it moving anymore. It just becomes an oil colored line inside a clear tube and never goes away........Maybe it stays filled with oil. You might see a bubble go by every once in a while if you look real close, but other than that having the clear line hasn't been very useful. Kinda looks like it belongs on one of those sprayers beside the kitchen faucet too.
One other thing to check is up under the neck, there should be a vent tube for the oil. Mine had a piece of hose on it and was plugged with a bolt. The oil tank needs to breathe too.
Here's a few things I have read on here but have no experience with. May be worth searching to get some answers. I may be completely wrong on these.....
Tighten your rocker feed nuts down while the rocker boxes are loose, then torque the rocker box bolts down. I think they said it ensures the rocker feed is correctly seated.
When you hook up that oil pressure gauge, be aware that there are two types of threads up there at the oil pressure switch. Some years have straight threads, other years have tapered threads. The wrong one could crack your timing cover.

Sorry to be so long winded. Hope this helps and good luck!
Johnny
 

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Discussion Starter · #19 ·
Thanks @flypa38 Deffinitly some stuff to consider. I dont actually want clear lines, I was just thinking it could help me see whats happening in there. But as you said, probably not. And thats for the clarification on restrictor , thats where i thought it was. I am going to grab a few braided lines at the supply store tomorrow and see what a few different I.D hoses do.

Does anyone thing that I am loosing pressure if I have a stripped acorn nut on the feed? I am waiting for a new one to come in, so it leaks a little bit, but coud this be part of the issue?

Pulling hairs here...
 

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Yes, don't be mistaken. He is correct about this. You don't restrict the oil to the rocker. It's the restriction of the oil return line that helps pump the oil to your rocker.

Maybe your OIF restrictor was semi blocked thus pumping too much oil to the rocker.
The flow should be split 50/50, you need a 3 mm orifice/restriction on both the oil return and on the rocker feed.
Best.
 
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