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Weber DCOE Stock Jetting Information!


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#1 Radim

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Posted 17 December 2010 - 06:59 PM

My brother (schicksal) got me a book with some jetting information ... thought i'd be helpful and share with Ratsunners!


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#2 Xander_42

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Posted 17 December 2010 - 11:06 PM

Awesome! Nice post! I'm sure this will be a good resource.

#3 banzai510(hainz)

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Posted 18 December 2010 - 10:53 AM

that has been needed for a long time that jettingbooklet

datzen mike save this
Throw on some Weber sidedrafts, Rising Sun hood.... call it good

#4 Radim

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Posted 18 December 2010 - 08:03 PM

You're welcome. :D

#5 tjyak50

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Posted 26 December 2010 - 09:42 AM

There is a little program available that gives preliminary jetting information too.
I have it on my website.

Own risk: http://www.airpoweri...car/jetting.exe

#6 Wide14u

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Posted 24 January 2011 - 07:24 PM

oh ya this rocks
Posted ImageWide14u, on , said:

i like the short bus and i can't do a long post :rofl:

#7 Skib

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Posted 24 January 2011 - 07:53 PM

this should be a sticky.

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#8 DISLEXICDIME

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Posted 24 January 2011 - 08:21 PM

Freeky has a pdf I gave hime on webber jetting freeky if you still have it post it up! My comp is dead or I would do it!

#9 kneesamo

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Posted 17 February 2011 - 07:31 AM

A few websites on tuning.

Redline's Idle Adjustment


Redline's Low Speed Circuit Tuning


Jason Grey's Tech


Teglerizer Tech


#10 speeder

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Posted 10 March 2011 - 02:50 PM

More useful tuning info for DCOE's. Much of it is applicable to Mikuni side drafts also.

http://www.expeditio...berDCOEinfo.htm

#11 defdes

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Posted 07 October 2011 - 05:36 PM

A few websites on tuning.

Redline's Idle Adjustment


Redline's Low Speed Circuit Tuning


Jason Grey's Tech


Teglerizer Tech


Great basic info in those Redline sites. I had never disconnected the throttle cable when tuning, I did it today and made a huge difference.

#12 Ron1200

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Posted 24 May 2012 - 11:37 AM

Hi Radim... Any chance you can fix the pic link?

Thanks

#13 ggzilla

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Posted 24 May 2012 - 11:53 AM

Here is the missing page.

If you have Weber, you really should buy the book, as it explains how to adjust, tune, size, and install. If yours for example has the wrong size venturis, no amount of swapping jets will make it run perfect.

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Here today gone tomorrow

#14 ggzilla

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Posted 24 May 2012 - 11:55 AM

Less than $25 at amazon
Here today gone tomorrow

#15 JacksonElanao

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Posted 08 May 2013 - 09:59 PM

 if you still have it publish it up! My compensation is deceased or I would do it! .

 

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#16 Ron1200

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Posted 05 November 2016 - 01:29 PM

I'm making this thread more current... A/O Nov 5, 2016

 

Links below have be checked, tested and updated.

 

There is a little program available that gives preliminary jetting information too.
I have it on my website.
Own risk: http://www.airpoweri...car/jetting.exe

 

This link is dead.  However, I found it at the AlfaBB forum.  Scroll to the last post and follow the instructions.  We may want to host it on Ratsun... just a thought.

http://www.alfabb.co...t-happened.html

 

 

 

All the above links are good... The Jason Gray and Teglerizer links are reached via the WayBackMachine

 

 

More useful tuning info for DCOE's. Much of it is applicable to Mikuni side drafts also.
http://www.expeditio...berDCOEinfo.htm

 

The above link works (TeriAnn's Triumph Web Pages).

 

Here are some additional Links:

Weber 40, 42, 45 DCOE Carburetor Exploded View (other types available at site)

Jetting Weber Carbs for High Altitude

Original Weber Jet Specs (new carbs)

Weber Carb Troubleshooting Guide

 

Weber Retailers:

Pierce Manifolds, Gilroy, CA

Redline Weber, Torance, CA

Weber Carbs Direct, Hauppauge, NY

 

I believe that the book book referenced by Radim in his original post was Pat Braden's Weber Carburetors It's about $21 on Amazon.

 51BZZh7u10L._AC_US160_.jpg

 

The book referenced by ggzilla is Haynes' Weber Carburetors Owners Workshop Manual. Now about $40 on amazon.

51kjQM5Zu5L._AC_US160_.jpg

 

Both books have a recommended jet settings reference.

 

From my Pat Braden book:

Page 169 listing conversion kits and their jetting (I've penciled in the missind info on the Datsun single 45 DCOE application. The added info sourced from ggzilla post above.) Keep in mind that this info was from 1988 do the newer DCOEs like the 45 DCOE 152 is not listed.

WCp169%20Conv%20Kits_zpshkq3exzu.jpg

 

Here is page 167 listing standard weber jetting by carb.

WCp167%20Weber%20Standard%20Jetting_zpsc

 

From ggzilla's post of page 190 from the Haynes book:

carb2.jpg

 

I believe that the columns in the image above reference the following:

A. Application

B. Carburetor type

C. Quantity of carbs

D. Main venturi

E. Auxiliary venturi

F. Main jet

G. Emulison tube

H. Air correction jet

I. Idle jet

J. Accelerator pump jet

K. Exhaust orifice

L. Needle valve



#17 Ron1200

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Posted 05 November 2016 - 01:40 PM

A few more captures...

DCOE Idle Jet

WCp162%20Idle%20Jet%20Selection_zpsxxolc

 

DCOE Emulsion Tube

WCp163%20Emulsion%20Tube%20Selection_zps

 

Altitude Compensation

WCp166%20Altitude%20Compensation%20Table



#18 Letsurf

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Posted 16 January 2017 - 07:56 AM

Does the book have jet settings for the 32/36 DVEG on a 720 with z24 engine? I've been searching everywhere and have found 3 completely different configurations.



#19 Ron1200

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Posted 27 January 2017 - 12:49 AM

If you meant 32/36 DGEV, it just has standard jetting...

Main Jet 140/140

Em Tube F50/F50

Air Corr   170/160

Idle Jet    60/50

Pump Jet 50

Float Value 2.0