Author |
Message |
John Moxon Samba Moderator
Joined: March 07, 2004 Posts: 13952 Location: Southampton U.K.
|
|
Back to top |
|
|
henry roberts Samba Member
Joined: February 24, 2003 Posts: 1275 Location: australia
|
Posted: Thu Nov 19, 2009 6:37 am Post subject: |
|
|
huge thanks to tom for sharing this info. |
|
Back to top |
|
|
Peter_Plade Samba Member
Joined: January 09, 2005 Posts: 551 Location: Denmark
|
Posted: Fri Nov 20, 2009 12:50 pm Post subject: |
|
|
Very nice information!
I don´t understand this with the 28PCI FVEE "blended top" what does that mean?
I can see the choke has been taken out also, is this the complete choke with axle and all?
I´m thinking about taking the choke out of the carb´s on my Express motor, they are not in use anyway! _________________ http://vw-bluehats.blogspot.com/ |
|
Back to top |
|
|
grueni Samba Member
Joined: November 03, 2008 Posts: 582 Location: Germany
|
Posted: Fri Nov 20, 2009 1:59 pm Post subject: |
|
|
its crazy how close the carbs flow are in stock form to the stock hp configuration. when calculating cfm into HP.
can tom or someone say something about how to use thes flow numbers?
i mean a stock 28 pci can also do to 50 hp on a judson engine... |
|
Back to top |
|
|
bvilletom Samba Member
Joined: January 22, 2006 Posts: 95 Location: cedar rapids iowa usa
|
Posted: Fri Nov 20, 2009 8:52 pm Post subject: |
|
|
Peter
On the F-vee the choke is completely removed, all and any rough edges anywhere are streamlined, the acc. pump nozzle area is narrowed & airfoiled, even the air corr jet is rounded and streamlined, the throttle shaft narrowed a lot & polished. Anything to make the carb interior have non-turbulent, laminar air flow helps. Removing the choke on an otherwise stock carb is barely noticeable in improvement. Its like do the bigest restriction first, like the weak link of a chain. Do the venturi first. _________________ bvilletom
36hp Challenge record holder New Age 126.236mph
1970 Porsche 914/6 – 2 liter LSR record holder
1992 Metro Sedan – 1 liter LSR records
1987 Chevy Turbo Sprint – under construction |
|
Back to top |
|
|
ShadetreeVEE Samba Member
Joined: July 01, 2006 Posts: 242 Location: Chico, CA
|
Posted: Sun Nov 22, 2009 10:47 am Post subject: |
|
|
awesome info on the chart! i have dual zeniths and its nice to see the difference between the modified version and the stock. however (and i cant seem to find the link) but theres a guy on the 356 registry who bored his zeniths out to a 36mm throttle bore and id love to see the comparison side by side. if i recall correctly the Solex P-II was still ahead in overall CFM but the pure velocity of the zenith was far superior to the solex. |
|
Back to top |
|
|
Peter_Plade Samba Member
Joined: January 09, 2005 Posts: 551 Location: Denmark
|
Posted: Mon Nov 23, 2009 12:07 pm Post subject: |
|
|
bvilletom wrote: |
Peter
On the F-vee the choke is completely removed, all and any rough edges anywhere are streamlined, the acc. pump nozzle area is narrowed & airfoiled, even the air corr jet is rounded and streamlined, the throttle shaft narrowed a lot & polished. Anything to make the carb interior have non-turbulent, laminar air flow helps. Removing the choke on an otherwise stock carb is barely noticeable in improvement. Its like do the bigest restriction first, like the weak link of a chain. Do the venturi first. |
Okay thank you, and I´m allready planning to get the venturi machined bigger. _________________ http://vw-bluehats.blogspot.com/ |
|
Back to top |
|
|
bvilletom Samba Member
Joined: January 22, 2006 Posts: 95 Location: cedar rapids iowa usa
|
Posted: Sun May 01, 2011 4:03 pm Post subject: |
|
|
Folks have been wanting me to do a flow comparison between the Wolfsburg West kit parts and the original Okrasa parts. I got the setups done & here are the figures. In a nutshell the carbs are not quite as good but the manifolds have way more potential.
Note: The replica intake manifold are larger everyplace which increases theair flow. However, they need some T.L.C. work in the runners to get it all.
All tested by Tom Bruch (Bville Tom) on a Superflow 110 @10 H20 (4-28-2011) _________________ bvilletom
36hp Challenge record holder New Age 126.236mph
1970 Porsche 914/6 – 2 liter LSR record holder
1992 Metro Sedan – 1 liter LSR records
1987 Chevy Turbo Sprint – under construction |
|
Back to top |
|
|
36hplandspeedracer Samba Member
Joined: January 30, 2006 Posts: 847 Location: Ivins, Utah
|
Posted: Sun May 01, 2011 10:11 pm Post subject: |
|
|
bvilletom wrote: |
Folks have been wanting me to do a flow comparison between the Wolfsburg West kit parts and the original Okrasa parts. I got the setups done & here are the figures. In a nutshell the carbs are not quite as good but the manifolds have way more potential.
Note: The replica intake manifold are larger everyplace which increases theair flow. However, they need some T.L.C. work in the runners to get it all.
All tested by Tom Bruch (Bville Tom) on a Superflow 110 @10 H20 (4-28-2011) |
Thanx Tom for taking the time to test these new components and share this information with the rest of the 36 world. As a side note, while visiting with Wolfsburg West reps at the Bug In today I found out there are more 36hp perfromance components being developed. Stay tuned to Vintage Speed and the Wolfsburg West newsletter for more announcements over the next few months.
A huge thanx to Tony and the crew for making modern performance available to 36hp drivers.........................
Burly |
|
Back to top |
|
|
splitpile Samba's Worst Speller
Joined: May 03, 2000 Posts: 5927 Location: back to living where hell meets the suface
|
Posted: Mon May 02, 2011 6:45 pm Post subject: |
|
|
bvilletom wrote: |
Folks have been wanting me to do a flow comparison between the Wolfsburg West kit parts and the original Okrasa parts. I got the setups done & here are the figures. In a nutshell the carbs are not quite as good but the manifolds have way more potential.
Note: The replica intake manifold are larger everyplace which increases theair flow. However, they need some T.L.C. work in the runners to get it all.
All tested by Tom Bruch (Bville Tom) on a Superflow 110 @10 H20 (4-28-2011) |
Got my work cut out for me now Tom. Before I do any other changes to my engine I'll tune the carbs and intakes to see what improves. _________________ Stocking distributor of "The Funky Green Panels"
www.BUSTORATION.com metal and more for your bus
"no more hacking my sig line" |
|
Back to top |
|
|
Roadcow Samba Member
Joined: November 14, 2003 Posts: 1012 Location: Stockton, Ca. area
|
Posted: Tue May 03, 2011 9:54 am Post subject: |
|
|
Thanks for sharing Tom! _________________ 71 Westy Roadcow
67 Panel
63 Bug
66 Ghia Bonneville 2014
74 Ghia Vert
69 Bonneville Ghia 150 in Chico
69 Bonneville Ghia in Ireland
80 Cabby 2.1 16v
98 Passat |
|
Back to top |
|
|
|