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donnmon
Samba Member
Joined: May 22, 2013
Posts: 82
Location: UK
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 Posted: Wed Aug 28, 2013 3:50 pm Post subject: |
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| SBD wrote: |
Looks nice, but can ya do it with heat?  |
I think that it can be done with heating. In this layout there would be just about room for a heat exchanger over the #2 and #4 primary tubing. I think we will try this when we have test fitted the thing. |
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tncsparky
Samba Member
Joined: November 29, 2008
Posts: 703
Location: santa rosa
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modok
Samba Member
Joined: October 30, 2009
Posts: 26787
Location: Colorado Springs
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| Posted: Wed Aug 28, 2013 4:15 pm Post subject: |
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yes, to be correct in the US it is "exhaust tube", and measured on the OD.
Trying to get a good recording of the sound I have come to realize it is actually not as loud as I thought....... the cooling fan and carbs probably are just as loud. Wasn't that quiet last year.
It's amazing how much differently mufflers and pipes work when they get some age and carbon in them! |
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Altema
Samba Member
Joined: June 20, 2010
Posts: 2904
Location: Lower Michigan
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| Posted: Thu Aug 29, 2013 5:32 pm Post subject: |
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| modok wrote: |
yes, to be correct in the US it is "exhaust tube", and measured on the OD.
Trying to get a good recording of the sound I have come to realize it is actually not as loud as I thought....... the cooling fan and carbs probably are just as loud. Wasn't that quiet last year.
It's amazing how much differently mufflers and pipes work when they get some age and carbon in them! |
If you have carbon buildup in the exhaust, you're driving it wrong!
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dnielsen
Samba Member
Joined: June 19, 2005
Posts: 80
Location: Phoenix, AZ
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| Posted: Thu Sep 26, 2013 10:42 am Post subject: |
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| Is there enough room to add a pair of small resonators or glasspacks before the final merge? I would really like to make something like this but also want a very quiet exhaust. |
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modok
Samba Member
Joined: October 30, 2009
Posts: 26787
Location: Colorado Springs
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| Posted: Thu Sep 26, 2013 4:44 pm Post subject: |
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no, but it's no problem.
I could make it very quiet if desired. Plenty of room in that muffler for glass, and there is enough space the muffler could be upped in size 50%
No point for me tho, carbs are already louder than tailpipe |
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donnmon
Samba Member
Joined: May 22, 2013
Posts: 82
Location: UK
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| Posted: Mon Nov 11, 2013 6:18 pm Post subject: |
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tri y has been completed thanks again to Glen for all your help with this.
[/img] |
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tncsparky
Samba Member
Joined: November 29, 2008
Posts: 703
Location: santa rosa
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| Posted: Tue Nov 12, 2013 3:51 pm Post subject: |
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How does it sound?
_________________
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tencentlife
Samba Member
Joined: May 02, 2006
Posts: 10078
Location: Abiquiu, NM, USA
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| Posted: Tue Nov 12, 2013 5:27 pm Post subject: |
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Good job, donnmon!
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donnmon
Samba Member
Joined: May 22, 2013
Posts: 82
Location: UK
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| Posted: Thu Nov 14, 2013 4:18 pm Post subject: |
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| tncsparky wrote: |
| How does it sound? |
Rather strangely quiet. |
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donnmon
Samba Member
Joined: May 22, 2013
Posts: 82
Location: UK
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| Posted: Thu Nov 14, 2013 4:41 pm Post subject: |
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| tencentlife wrote: |
| Good job, donnmon! |
Many thanks tencentlife, I am a real fan of your work so much appreciated. |
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tencentlife
Samba Member
Joined: May 02, 2006
Posts: 10078
Location: Abiquiu, NM, USA
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| Posted: Thu Nov 14, 2013 5:12 pm Post subject: |
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Well thanks to you too, for the kind words!
_________________
Shop for unique Vanagon accessories at the Vanistan shop:
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Please don't PM here, I will not reply.
Experience is kryptonite to doctrine. |
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modok
Samba Member
Joined: October 30, 2009
Posts: 26787
Location: Colorado Springs
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| Posted: Thu Nov 14, 2013 6:41 pm Post subject: |
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Looks very nice, closer to tecent's design than mine.
The fact it is quiet is....probably a good sign. You'll never know if it is perfect unless you try every combination of this and that..... which...you may or may not want to do.
We are off the beaten path now!
I bet at the very least it will help it run strong and cool in the mid RPMS, and if it isn't too loud..... then it's better than the majority of em 
Give it a week or two, I swear they always run different after it has some miles on it!! Tell me if you notice |
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ralf
Samba Member
Joined: July 08, 2008
Posts: 1215
Location: r4
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| Posted: Sun Jul 20, 2014 7:24 pm Post subject: Re: Sedan tri-y header |
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| modok wrote: |
while car was on stands, I took some pictures for you |
probably the most useless post/reply here ever..
but the last photo. just reminded me of that vid you made for that competition... u were driving around across and waving LOL
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Flow Through a Curved Conduit
porting my SP head for my brother's project
https://youtu.be/OS_mVjQuqgk |
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modok
Samba Member
Joined: October 30, 2009
Posts: 26787
Location: Colorado Springs
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| Posted: Sun Jul 20, 2014 7:39 pm Post subject: |
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Yes it's been awhile. I should update.
Since pic.......... shortened the primaries to be approx 13" long. Lost mid range bad, top end improved.
Changed final collector to be 2 1/8 OD, and gained response and some of midrange back.
Probably better overall now. But secondaries being 1/2 length of primaries is good too. Considering stepped primaries as another possibility, but no idea if it will be better/worse
Today I talked to my buddy who is a welder/fab guy about making these, he first brought up making it one piece with minimum welds.
That's fine it reminds me average joe thinks the appearance affects performance. Average joe is a moron. Maybe I will make another someday, but not soon.
BTW ralf, I changed the oil and spark plugs and filter today. The limit for VR1 oil is 5000 miles. i waited too long and the carbon in the oil was starting to seperate out |
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ralf
Samba Member
Joined: July 08, 2008
Posts: 1215
Location: r4
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| Posted: Sun Jul 20, 2014 7:42 pm Post subject: |
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good to know on the mileage limit! hehe 5k is alot so that should be nice though
_________________
Flow Through a Curved Conduit
porting my SP head for my brother's project
https://youtu.be/OS_mVjQuqgk |
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Brian
Samba Moderator
Joined: May 28, 2012
Posts: 8340
Location: Oceanside
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| Posted: Sun Jul 20, 2014 9:58 pm Post subject: |
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is that a mini sump or a flipped oil strainer to filter the drips?
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modok
Samba Member
Joined: October 30, 2009
Posts: 26787
Location: Colorado Springs
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| Posted: Sun Jul 20, 2014 10:07 pm Post subject: |
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| bottom of propane bottle=mini-sump |
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earthquake
Samba Member
Joined: January 10, 2008
Posts: 3984
Location: SANDY VALLEY, NEVADA
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| Posted: Mon Jul 21, 2014 9:06 am Post subject: |
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Here's a good place for bends and collectors and such...
http://www.mandrel-bends.com/catalog/
They have a pretty good selection in the smaller size tubing.
Casey
_________________
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modok
Samba Member
Joined: October 30, 2009
Posts: 26787
Location: Colorado Springs
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| Posted: Wed Apr 11, 2018 7:52 pm Post subject: Re: Sedan tri-y header |
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#2 primary rusted through today.
I'll have to patch it tonight with used crappy tubing, don't have any good stuff on hand.
I need 14 gauge aluminumized U and J bends in 1.5" and 1 3/8.....where to get them? |
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