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aeromech
Samba Member
Joined: January 24, 2006
Posts: 16954
Location: San Diego, California
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 Posted: Fri Oct 23, 2009 8:11 pm Post subject: |
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Glenn,
I need to go somewhere tomorrow and have some fuel lines made to run from the hard fuel manifold I fabricated to the carbs. The fittings are 1/4 MS (or swagelock) male to 1/4 male AN and need to be about a foot long each. Where's a good place to go to have them made? Maybe stainless braid hose.
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Glenn 
Mr. 010
Joined: December 25, 2001
Posts: 76884
Location: Sneaking up behind you
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| Posted: Fri Oct 23, 2009 8:15 pm Post subject: |
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Honestly I didn't use any fittings... just band style hose clamps.
After all, it's just 3psi in the fuel line.
The ones I used are ABA band clamps on the right.
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Glenn
74 Beetle Specs | 74 Beetle Restoration | 2180cc Engine
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aeromech
Samba Member
Joined: January 24, 2006
Posts: 16954
Location: San Diego, California
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| Posted: Fri Oct 23, 2009 8:18 pm Post subject: |
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Those clamps are cool. I found them on eBay yesterday for around $1 a piece delivered. My problem is that the fittings on the carbs are 3/8 AN male so I have to adapt to that.
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Lead Mechanic: San Diego Air and Space Museum
Licensed Airframe and Powerplant Mechanic
Licensed Pilot (Single engine Land)
Boeing 727,737-200-300-400,757,767
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Glenn
Mr. 010
Joined: December 25, 2001
Posts: 76884
Location: Sneaking up behind you
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| Posted: Fri Oct 23, 2009 8:21 pm Post subject: |
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Form my IDA's I used Weber 45DCOE barbed fittings, so putting the hose on was easy. I also used the 7mm FI hose instead of the 5.5mm carb hose.
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Glenn
74 Beetle Specs | 74 Beetle Restoration | 2180cc Engine
"You may not get what you pay for, but you always pay for what you get"
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aeromech
Samba Member
Joined: January 24, 2006
Posts: 16954
Location: San Diego, California
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| Posted: Fri Oct 23, 2009 8:27 pm Post subject: |
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| Glenn wrote: |
| Form my IDA's I used Weber 45DCOE barbed fittings, so putting the hose on was easy. I also used the 7mm FI hose instead of the 5.5mm carb hose. |
Thanks for the info Glenn.
_________________
Lead Mechanic: San Diego Air and Space Museum
Licensed Airframe and Powerplant Mechanic
Licensed Pilot (Single engine Land)
Boeing 727,737-200-300-400,757,767
Airbus A319,320,321
DC9/MD80
BAe146
Fokker F28/F100
VW type 1 1962,63,65,69,72
VW Type 2 1971 (3 ea.) 1978, 1969
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Chris Vellat
Samba Member
Joined: April 09, 2004
Posts: 1590
Location: Seattle, WA
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| Posted: Sun Oct 25, 2009 12:06 pm Post subject: |
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| Chris Vellat wrote: |
| aeromech wrote: |
| Type 5 Joe wrote: |
The carb sucks all the oil through the #3-4 cylinders. Effectively lowering the octane rating of those cylinders.
Maybe he could inject oil directly into the other cylinders to lower the octane ratings there also, and even things up. |
The oil lowers the octane rating? Octane is a measure of the resistance of fuel to detonation, not how much heat value it contains. |
I thought it was clear what he meant...of course it'll 'increase' the octane - but with negative consequences... |
I'm going to go back here and eat my words... Oil will decrease the octane by increasing the cetane...Oils are rated in cetane - or essentially the opposite of octane. Octane being the resistance, cetane being the willingness to detonate. |
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aeromech
Samba Member
Joined: January 24, 2006
Posts: 16954
Location: San Diego, California
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| Posted: Sun Oct 25, 2009 2:50 pm Post subject: |
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| Chris Vellat wrote: |
| Chris Vellat wrote: |
| aeromech wrote: |
| Type 5 Joe wrote: |
The carb sucks all the oil through the #3-4 cylinders. Effectively lowering the octane rating of those cylinders.
Maybe he could inject oil directly into the other cylinders to lower the octane ratings there also, and even things up. |
The oil lowers the octane rating? Octane is a measure of the resistance of fuel to detonation, not how much heat value it contains. |
I thought it was clear what he meant...of course it'll 'increase' the octane - but with negative consequences... |
I'm going to go back here and eat my words... Oil will decrease the octane by increasing the cetane...Oils are rated in cetane - or essentially the opposite of octane. Octane being the resistance, cetane being the willingness to detonate. |
Thanks, I didn't know that
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Licensed Airframe and Powerplant Mechanic
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Boeing 727,737-200-300-400,757,767
Airbus A319,320,321
DC9/MD80
BAe146
Fokker F28/F100
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dmilla
Samba Member
Joined: February 19, 2005
Posts: 123
Location: Ventura County, CA
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| Posted: Sun Dec 20, 2009 12:09 pm Post subject: Modified CB Performance Breather Box |
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Here's my two cents...
I took "Lost In Baja's" post one step further on my 2007cc. In addition to adding 2/3 of one stainless steel Scotch Brite Scowering Pad to help collet the oil vapors to prevent potential clogging of my K&N filter, I drilled & tapped another intake fitting to the lower end of the box. Now, the oil vapors enter the lower third of the box, the full oil collection benefit of the breather is realized, and the K&N Filter shouldn't wet-out. The new intake fitting is tapped high enough to prevent oil backflowing into the valve covers when filling the case with oil. Seal it all up with some high-temp silicone sealer on both sides of the face plate rubber gasket and the pedistal gasket, and it'll stay nice, dry, & clean.
Enjoy!
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bigheadted
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Joined: July 25, 2009
Posts: 79
Location: Oroville, Ca
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| Posted: Sun Dec 20, 2009 12:38 pm Post subject: |
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| It would sure suck big time IF a chunk of those scrubbing pads fell into the engine. I would at least add a screen over the large hole leading into the engine or would the stock louvered part do the trick ?? |
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dmilla
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Joined: February 19, 2005
Posts: 123
Location: Ventura County, CA
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| Posted: Sun Dec 20, 2009 1:05 pm Post subject: |
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You're looking at 2/3 of one pad that has been stretched and puffed up. The pad is extremely tough and cutting 2/3 of it off was a bitch, so I'm confident it won't separate.
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Glenn
Mr. 010
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dmilla
Samba Member
Joined: February 19, 2005
Posts: 123
Location: Ventura County, CA
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| Posted: Sun Dec 20, 2009 1:32 pm Post subject: |
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Thanks for the compliment Glenn. You helped me with the parts to rebuild my 019.
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lostinbaja
Samba Member
Joined: December 19, 2004
Posts: 4036
Location: Frankfort, Illinois
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| Posted: Sun Dec 20, 2009 2:12 pm Post subject: |
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| bigheadted wrote: |
| It would sure suck big time IF a chunk of those scrubbing pads fell into the engine. I would at least add a screen over the large hole leading into the engine or would the stock louvered part do the trick ?? |
I had the same worries, that is why I went with copper scouring pad. I have a lot of miles on mine with no issues.
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Daddybus
Samba Member
Joined: June 15, 2000
Posts: 1653
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| Posted: Sun Dec 20, 2009 4:29 pm Post subject: Re: Modified CB Performance Breather Box |
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| dmilla wrote: |
Here's my two cents...
I took "Lost In Baja's" post one step further on my 2007cc. In addition to adding 2/3 of one stainless steel Scotch Brite Scowering Pad to help collet the oil vapors to prevent potential clogging of my K&N filter, I drilled & tapped another intake fitting to the lower end of the box. Now, the oil vapors enter the lower third of the box, the full oil collection benefit of the breather is realized, and the K&N Filter shouldn't wet-out. The new intake fitting is tapped high enough to prevent oil backflowing into the valve covers when filling the case with oil. Seal it all up with some high-temp silicone sealer on both sides of the face plate rubber gasket and the pedistal gasket, and it'll stay nice, dry, & clean.
Enjoy!
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I added a fitting to the back like this guy. I used one of the bottom fittings for a return like to the fuel pump block off. I filled the box with layers of steel screen material to help slow down the oil mist and help it to condense and fall back into the box/motor. |
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pharos
Samba Member
Joined: March 05, 2009
Posts: 309
Location: Egypt
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| Posted: Fri Aug 20, 2010 7:17 am Post subject: Re: Modified CB Performance Breather Box |
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| dmilla wrote: |
Here's my two cents...
I took "Lost In Baja's" post one step further on my 2007cc. In addition to adding 2/3 of one stainless steel Scotch Brite Scowering Pad to help collet the oil vapors to prevent potential clogging of my K&N filter, I drilled & tapped another intake fitting to the lower end of the box. Now, the oil vapors enter the lower third of the box, the full oil collection benefit of the breather is realized, and the K&N Filter shouldn't wet-out. The new intake fitting is tapped high enough to prevent oil backflowing into the valve covers when filling the case with oil. Seal it all up with some high-temp silicone sealer on both sides of the face plate rubber gasket and the pedistal gasket, and it'll stay nice, dry, & clean.
Enjoy!
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I have one question
| Quote: |
| another intake fitting to the lower end of the box |
Is this new intake fitting goes to both sides of valve covers with "T" Connector?
Tks
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wildman1
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Joined: December 30, 2003
Posts: 674
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| Posted: Fri Aug 20, 2010 8:01 am Post subject: |
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Pharos, good question. You could/should have another fitting for the other valve cover as T-ing the covers may not work properly?? I do not know, just speculating. It could just transfer oil from one to the other without a scavange of vapors to the breather?
dmillaFirst, your Bug is still my favorite late model street build and I hope mine will be that clean when done. Second, You can further utilize that breather box by plumbing the dead top fitting to your RH side Dell. You have the right idea for the VC at the lower 1/3 and the K&N to the atmosphere, it just needs vaccum that the carb will provide. Without the vacuum it will be a collector of vapors since the K&N will only bleed off a bit and not evacuate. Nice work.  |
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Steve Arndt
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Joined: August 01, 2005
Posts: 1780
Location: Boise, Idaho
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| Posted: Fri Aug 20, 2010 6:03 pm Post subject: |
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I TIG welded my CB breather box directly to the alternator stand. No leaks  I also enlarged the tapped holes to 3/8 instead of 1/4 pipe. I stuffed three copper cleaning pads inside. Finally, gloss black powder coated the whole shabang. |
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aeromech
Samba Member
Joined: January 24, 2006
Posts: 16954
Location: San Diego, California
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| Posted: Fri Aug 20, 2010 8:57 pm Post subject: |
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| Steve Arndt wrote: |
| I TIG welded my CB breather box directly to the alternator stand. No leaks I also enlarged the tapped holes to 3/8 instead of 1/4 pipe. I stuffed three copper cleaning pads inside. Finally, gloss black powder coated the whole shabang. |
Pics or it didn't happen......
_________________
Lead Mechanic: San Diego Air and Space Museum
Licensed Airframe and Powerplant Mechanic
Licensed Pilot (Single engine Land)
Boeing 727,737-200-300-400,757,767
Airbus A319,320,321
DC9/MD80
BAe146
Fokker F28/F100
VW type 1 1962,63,65,69,72
VW Type 2 1971 (3 ea.) 1978, 1969
VW Jetta
VW Passat
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Steve Arndt
Samba Member
Joined: August 01, 2005
Posts: 1780
Location: Boise, Idaho
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| Posted: Sat Aug 21, 2010 12:39 pm Post subject: |
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| aeromech wrote: |
| Steve Arndt wrote: |
| I TIG welded my CB breather box directly to the alternator stand. No leaks I also enlarged the tapped holes to 3/8 instead of 1/4 pipe. I stuffed three copper cleaning pads inside. Finally, gloss black powder coated the whole shabang. |
Pics or it didn't happen...... |
Just uploaded one:
The bottom is plumbed to the fuel pump block off with 3/8 fittings.
The top fittings are still 1/4 pipe. This is working on my 13.1:1 2275. |
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74 Thing
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| Posted: Sat Aug 21, 2010 3:34 pm Post subject: |
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| I have one for sale if anyone is interested-PM me. |
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