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firepower354 Samba Member
Joined: March 22, 2014 Posts: 6 Location: Flint MI
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Posted: Tue Apr 22, 2014 6:27 am Post subject: EFI runner diameter |
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I have 2 sets of steel EFI ends, one set (roughly) 23.5mm ID and one set 27.5mm ID. I'm cutting the 2>1 parts off to fab a long-runner setup. Does any one know why there was such a difference in the sizes? |
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Weezle Samba Member
Joined: February 07, 2014 Posts: 685 Location: ORLANDO
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Posted: Tue Apr 22, 2014 6:54 am Post subject: Re: EFI runner diameter |
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firepower354 wrote: |
I have 2 sets of steel EFI ends, one set (roughly) 23.5mm ID and one set 27.5mm ID. I'm cutting the 2>1 parts off to fab a long-runner setup. Does any one know why there was such a difference in the sizes? |
I have intakes from a FI bug that are much smaller ID than that. What type of car are they from? I think mine are 18mm ID |
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miniman82 Samba Swamp Donkey
Joined: March 22, 2005 Posts: 9515 Location: Southern Maryland
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Posted: Tue Apr 22, 2014 1:08 pm Post subject: |
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They probably realized the small tubes were a choke point and made them bigger, but even the later cast aluminum Mexi EFI stuff is too small for all but a mild 1915. _________________ Build thread: http://www.thesamba.com/vw/forum/viewtopic.php?t=212747
Glenn wrote: |
satterley_sr wrote: |
I just wanted to bitch but I'm getting no sympathy. |
Welcome to the Samba. |
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theKbStockpiler Samba Member
Joined: July 07, 2012 Posts: 2316 Location: Rust Belt
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Posted: Tue Apr 22, 2014 2:30 pm Post subject: |
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I believe I have set of 1975 type I's
Part number 043133213A +GF+125117A
and they measure:
I.D of branch ends (27.5)mm
I.D of single inlet to branch ( 32.3) mm
O.D of branches ( 30.25)mm _________________ My beetle is not competing with your beetle. I have the yellow beetle in my town. There is a red one, a green one ......
Use all safety devices including a mask. |
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Weezle Samba Member
Joined: February 07, 2014 Posts: 685 Location: ORLANDO
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Posted: Sat May 03, 2014 5:43 am Post subject: Re: EFI runner diameter |
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Weezle wrote: |
firepower354 wrote: |
I have 2 sets of steel EFI ends, one set (roughly) 23.5mm ID and one set 27.5mm ID. I'm cutting the 2>1 parts off to fab a long-runner setup. Does any one know why there was such a difference in the sizes? |
I have intakes from a FI bug that are much smaller ID than that. What type of car are they from? I think mine are 18mm ID |
I was wrong, the rubber tube that connect the manifold to the plenum has an inside diameter of 1.25" so way more than 18mm |
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clonebug Samba Member
Joined: January 29, 2005 Posts: 4026 Location: NW Washington
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Posted: Sat May 03, 2014 8:09 am Post subject: |
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The German intake from the plenum to the endpieces is 1 3/8ths inch outside diameter.
Mario was able to push a little over 200 hp through them with a turbo.
I just eliminated the German plenum on mine and built my own intake using 1 5/8ths inch tubing.
You could use 1 7/8ths and just clear the alt stand but it introduces many headaches with an endpiece with a smaller inlet and using a reducing coupler.
Basically there is no place to slide the coupler out of the way to pull the intake so you have to pull an end piece to remove the intake.
I can't pull an endpiece without pulling the shroud...........see where I am going????......I cant pull the shroud without pulling the Buggy body....... _________________
vwracerdave wrote: |
Take a good long look in the mirror and report back on what you see. |
Paul.H wrote: |
That one line on that chart is probably better info than you can get from this place in a month |
My Megasquirt Fuel Injection Turbo Buggy Build
Water/Alcohol Injection
Audi TT intercooler
Upgraded to MS3Pro-Evo
EcuMaster PMU16
ECUMaster ADU5 Digital Dash
http://www.shoptalkforums.com/viewtopic.php?f=3&t=127936 |
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66brm Samba Member
Joined: January 25, 2010 Posts: 3676 Location: Perth Western Australia
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Posted: Sat May 03, 2014 9:24 pm Post subject: |
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clonebug wrote: |
I can't pull an endpiece without pulling the shroud...........see where I am going????......I cant pull the shroud without pulling the Buggy body....... |
Thinking out of the box here, .....why don't you just drop the engine out the ass end? It is a buggy after all..? _________________ Aust. RHD 66 Type 1
Aust. RHD 57 Type 1 Oval
modok wrote: |
I am an expert at fitting things in holes, been doing it a long time |
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clonebug Samba Member
Joined: January 29, 2005 Posts: 4026 Location: NW Washington
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Posted: Sat May 03, 2014 9:38 pm Post subject: |
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66brm wrote: |
clonebug wrote: |
I can't pull an endpiece without pulling the shroud...........see where I am going????......I cant pull the shroud without pulling the Buggy body....... |
Thinking out of the box here, .....why don't you just drop the engine out the ass end? It is a buggy after all..? |
As you can see my Buggy body hangs pretty low in the back.
It doesn't help I am an old Fart and can't bend as well as I used to.
I told myself when I started my turbo project that i would NOT cut the body in the back to add anything nor make it easier and so far I have stuck with that.
I am running out of room though......
There is no way that engine would come out with the body on.
It only takes an hour or so to get it ready to pull and now with the FI wiring added it takes a little over two hours. _________________
vwracerdave wrote: |
Take a good long look in the mirror and report back on what you see. |
Paul.H wrote: |
That one line on that chart is probably better info than you can get from this place in a month |
My Megasquirt Fuel Injection Turbo Buggy Build
Water/Alcohol Injection
Audi TT intercooler
Upgraded to MS3Pro-Evo
EcuMaster PMU16
ECUMaster ADU5 Digital Dash
http://www.shoptalkforums.com/viewtopic.php?f=3&t=127936 |
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66brm Samba Member
Joined: January 25, 2010 Posts: 3676 Location: Perth Western Australia
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Posted: Sat May 03, 2014 9:51 pm Post subject: |
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clonebug wrote: |
I told myself when I started my turbo project that i would NOT cut the body in the back to add anything nor make it easier and so far I have stuck with that.
I am running out of room though......
There is no way that engine would come out with the body on.
It only takes an hour or so to get it ready to pull and now with the FI wiring added it takes a little over two hours. |
Fair enough, I still feel there isn't any reason why the engine wouldn't come out although I know what you are saying about limited space, I recently helped a friend widen a Manx copy by about 4" total, and extended the back about the same to fit larger rear tyres under the fenders and dual carbs under the fiberglass with space for linkages and filters etc _________________ Aust. RHD 66 Type 1
Aust. RHD 57 Type 1 Oval
modok wrote: |
I am an expert at fitting things in holes, been doing it a long time |
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firepower354 Samba Member
Joined: March 22, 2014 Posts: 6 Location: Flint MI
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theKbStockpiler Samba Member
Joined: July 07, 2012 Posts: 2316 Location: Rust Belt
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Posted: Sun May 04, 2014 8:23 am Post subject: |
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Are you going to use two throttle bodies like a crossfire? _________________ My beetle is not competing with your beetle. I have the yellow beetle in my town. There is a red one, a green one ......
Use all safety devices including a mask. |
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firepower354 Samba Member
Joined: March 22, 2014 Posts: 6 Location: Flint MI
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Posted: Sun May 04, 2014 9:06 am Post subject: |
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theKbStockpiler wrote: |
Are you going to use two throttle bodies like a crossfire? |
No, common plenum 4>1 and progressive 2v carb, is the plan. It's a SoCal/TX car, so I'm thinking there will be less issues with atomization than in my frozen tundra. A couple of heat sources, long/narrow runners, snug quench, it should run OK in the warm country. |
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theKbStockpiler Samba Member
Joined: July 07, 2012 Posts: 2316 Location: Rust Belt
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Posted: Sun May 04, 2014 9:18 am Post subject: |
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I think the factory manifold can keep up with the factory end-manifolds so I assume you want to tune the length of the runners for a specific rpm range? I have seen used single 2 barrel carb setups (non progressive) for sale in the samba classifieds that had provisions for the preheater tubes? I get the crossfire comparison now. _________________ My beetle is not competing with your beetle. I have the yellow beetle in my town. There is a red one, a green one ......
Use all safety devices including a mask. |
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firepower354 Samba Member
Joined: March 22, 2014 Posts: 6 Location: Flint MI
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Posted: Sun May 04, 2014 1:11 pm Post subject: |
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Yep, 4 long runners, all the way to the plenum. |
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