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grailoc
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Joined: March 25, 2004
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Location: FRANCE and now QUEBEC city
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grailoc
Samba Member
Joined: March 25, 2004
Posts: 783
Location: FRANCE and now QUEBEC city
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grailoc
Samba Member
Joined: March 25, 2004
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Location: FRANCE and now QUEBEC city
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RichardinNZ
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Joined: September 16, 2011
Posts: 204
Location: Auckland, New Zealand
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 Posted: Sun Feb 26, 2017 7:10 pm Post subject: Re: Autotechnik express Kit - for my 56 vert |
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I have a pair of modified Express Manifolds, but my setup may be a little different to yours:
- Modified stocks heads , flycut 2mm for 7.5:1 compression and 33mm intake valves
- Speedwell USA 1.4:1 Ratio Rockers
- Vintage Speed TW Sebring Exhaust
I have the following jets:
Main Jet 112.5
Air Correction Jet 190
Emulsion Tube 10
I've only had these jets a few weeks as I have just installed rebuilt carbs. I previously had the suggested 'Express' jets set out here:
https://felix03.jimdo.com/die-vergaser/der-solex-28-pci-vergaser/
It is difficult to compare the two as the previous jets were in worn out carbs. My intention is to see how the latest setup goes and swap over jets if needed.
Hope this helps
Richard
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Richard
'58 Beetle; NZ Assembled
Dual Carb 36hp |
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grailoc
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Joined: March 25, 2004
Posts: 783
Location: FRANCE and now QUEBEC city
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grailoc
Samba Member
Joined: March 25, 2004
Posts: 783
Location: FRANCE and now QUEBEC city
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RichardinNZ
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Joined: September 16, 2011
Posts: 204
Location: Auckland, New Zealand
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| Posted: Sun Mar 05, 2017 9:17 pm Post subject: Re: Autotechnik express Kit - for my 56 vert |
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The question I always have looking at that table is why do Express and Riechert suggest different jetting for what is essentially the same set up (ie both dual 28PCI with 21.5mm venturi on otherwise stock 30hp engines)?
I know very little about jetting, but does the larger air correction jet and smaller main jet suggested by Express give a similar outcome to the larger main jet and smaller air correction jet suggested by Riechert (I've been looking at http://www.aircooled.net/vw-carburetors-jetting-102/).
With my setup (as listed above) it seems to be running rich at high RPM...but with larger intake valves, higher compression, ratio rockers and improved exhaust I'd expected it to be lean with the Riechert recommended jetting...am I wrong?
Sorry to hijack the thread but good to keep this discussion together?
Thanks, Richard
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Richard
'58 Beetle; NZ Assembled
Dual Carb 36hp |
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grailoc
Samba Member
Joined: March 25, 2004
Posts: 783
Location: FRANCE and now QUEBEC city
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grailoc
Samba Member
Joined: March 25, 2004
Posts: 783
Location: FRANCE and now QUEBEC city
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grailoc
Samba Member
Joined: March 25, 2004
Posts: 783
Location: FRANCE and now QUEBEC city
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grailoc
Samba Member
Joined: March 25, 2004
Posts: 783
Location: FRANCE and now QUEBEC city
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grailoc
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Joined: March 25, 2004
Posts: 783
Location: FRANCE and now QUEBEC city
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Peter_N
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Joined: February 19, 2014
Posts: 153
Location: The Netherlands
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| Posted: Mon May 29, 2017 6:15 am Post subject: Re: Autotechnik express Kit - for my 56 vert |
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| grailoc wrote: |
So here is the final setup:
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Great setup! Looks very cool.
Forgive my ignorance, but would such a set increase torque, topspeed or both?
I'm looking into getting some more out of my 36hp one day (in a splitbus)
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My 1958 PGSG project topic |
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grailoc
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Posts: 783
Location: FRANCE and now QUEBEC city
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Peter_N
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Joined: February 19, 2014
Posts: 153
Location: The Netherlands
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| Posted: Tue May 30, 2017 2:25 am Post subject: Re: Autotechnik express Kit - for my 56 vert |
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| grailoc wrote: |
Hi Peter, I guess it would add few more hp around 10-20% range more.
I also put domed piston which might help to get few more HP too.
When I get a chance, I will also install 4 tip abarth muffler which should allow few more extras HPs.
In other vintage speed build thread I saw people to increase valve diam to same size as the okrasa setup. |
Thanks for your explanation.
I've been looking into the okrasa setup yes 
I reckon I first have to study the possibilities a bit more.
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