I found this Via Google:
"Can any one point me in the direction of a real expert (in Melbourne, preferably eastern suburbs) on tuning Weber DCOE carbies?
Link Automotive in Thornton Cres Mitcham, lots and lots of Weber setup knowledge, will do as good a job as is possible without a rolling road dyno.
For the rolling road, I use Powerplay (formerly Datrally) down in Cheltenam (not eastern subs I know)"
Deane.
rclough wrote:
I tried to search for a Datrally web site but the search only finds people who are using Datrally built weber manifolds - which are the only manifolds to use in Australia on high powered Datsun engines using Weber DCOE 45 or 48mm carbs.
Datrally has another Trading name these days as Datsuns are becoming too small a market.
----- Original Message ----- From: "Mohit K. Autar" <[EMAIL PROTECTED]> To: <[EMAIL PROTECTED]> Sent: Thursday, September 02, 2004 6:45 AM Subject: RE: weber jets...
thanks bro,
now how do i get to their web.
-----Original Message----- From: rclough [mailto:[EMAIL PROTECTED] Sent: Wednesday, September 01, 2004 8:34 PM To: [EMAIL PROTECTED] Subject: Re: weber jets...
Mohit The people to contact for setting up webers on a Datsun are Datrally, in Cheltenham, Melbourne Australia. I was speaking to an (older) carburettor repair specialist today and he recommends them as the "one stop tuning shop" for all weber powered Datsuns. They are listed on the Ozdat Trade Page, "Datrally Developments". ----- Original Message ----- From: "Mohit K. Autar" <[EMAIL PROTECTED]> To: <[EMAIL PROTECTED]> Sent: Wednesday, September 01, 2004 6:48 AM Subject: RE: weber jets...
Hi there,
thanks alot.its kinda very hard to find info of performance parts here in fiji but if someone is interested in setting up a performance shop here they will make good money.
things we import here from aussie,nz,usa are spark plugs,air filters,NOS system,cams and plenty things to name.
i will get back to you once i get it going.
Mohit.
-----Original Message----- From: rclough [mailto:[EMAIL PROTECTED] Sent: Tuesday, August 31, 2004 10:24 PM To: [EMAIL PROTECTED] Subject: Re: weber jets...
Mohit
I am studying "the art of Weber Jetting" from Des Hammill's great book on setting them up, so a bit of a guess here.
Assuming you are running an L16, or 400cc per cylinder, as the weber tuning guide would work it out.
Choke size is OK, and you should have a 4.5 auxiliary venturi. Your Main/emulsion/air correction jetting sounds OK, maybe a bit rich for 400cc cylinders, probably good for high revving burnouts. Rule of thumb is the air correction (at the top emulsion tube) should be a bit larger the main jet (at the bottom of the emulsion tube).
The critical one for road use is the idle jet, as this is the one that keeps you going 90% of the time. Not so important for burnouts.
The 50 size pump jet is usually recommended but some tuners use a "nil" (no bleed back hole) jet to keep more fuel flowing when the accellerator pump jet is operating.
Give it a run with the jettings you have and tell us what is not working well, ie does it hesitate just off idle or run out of revs too early, missfire at certain revs etc. Then we can work out what part of the jetting is not ideal.
I just remembered, the Hames Weber/SU tuning manual has a table of all jettings for an L16 engine fitted with twin 40mm DCOEs. It would be well worth looking up if you can get a copy from a library (I think its in appendix 4 (page 52?) from memory - listed as Datsun P510.
Webers get very expensive to figure out - today I spent my second $100 on minor parts to repair just one 45mm DCOE, and I haven't bought a single jet or choke!
----- Original Message ----- From: "Mohit K. Autar" <[EMAIL PROTECTED]> To: <[EMAIL PROTECTED]> Sent: Monday, August 30, 2004 2:55 PM Subject: weber jets...
Hi list,
I got a set of twin webers 40DCOE.the jets are as follows,
1.air corrector jet - 155 2.idle jet holder - 50F9 3.emulsion tube - F15 4.main jet - 120 5.choke - 32 6.pump jet - 50 7.starter jet - 100FS
will this jets size work well on a L16 with mild cam.i want to use it on
my car for the race in the weekend.
[Mohit K. Autar]
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