I cant disagree, Heath. The dyno print out is always a better measure of the state of tune than BS.
----- Original Message ----- From: "Heath" <[EMAIL PROTECTED]> To: <[EMAIL PROTECTED]> Sent: Friday, September 03, 2004 10:12 AM Subject: Re: weber jets... > dyno tuning i have found the best over the years. > > heath > ----- Original Message ----- > From: "rclough" <[EMAIL PROTECTED]> > To: <[EMAIL PROTECTED]> > Sent: Thursday, September 02, 2004 10:56 PM > Subject: Re: weber jets... > > > > Deane > > Good info! > > > > I have heard of Link, dont know what types of engines they specialise in > do > > you? > > > > I was told by a Datrally customer whose engine I purchased, that Datrally > > used to set up this engine after a rebuild with chokes and jets selected > > from experience and road testing. Their tuner had great knowledge and > many > > years of experience in setting up webers on Datsuns. He used basic > > diagnostic equipt to set up and fine tune, and road testing for checking. > > There is no doubting that the result is pretty good as this engine goes > > really hard throughout the power rev range, yet is still tractable and > pulls > > without fuss from 1100RPM (Cam is only 72 degrees). > > > > Powerplay (formerly Datrally) seem to be well respected in the carby > repair > > industry as the place to go when you want to tune a Datsun L series motor > > fitted with webers (after rebuilding them). I didnt know they used a > dyno! > > My carby repair shop friend says Datrally are cheaper than self tuning by > > trial and error and having to buy full sets of jets, chokes etc. > > > > Errol, are you there? what do you know? > > > > ----- Original Message ----- > > From: "Deane Hayes" <[EMAIL PROTECTED]> > > To: <[EMAIL PROTECTED]> > > Sent: Thursday, September 02, 2004 10:13 PM > > Subject: Re: weber jets... > > > > > > > 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] > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > --membersozdat------------------------------------------------------- OZDAT Mailing List Please Note:- Send (un)subscribe requests to [EMAIL PROTECTED] Send submissions to [EMAIL PROTECTED] No unauthorised redistribution of this email http://www.ozdat.com/ozdatonline/index.htm http://www.ozdat.com/ozdatonline/listindex.html http://www.mail-archive.com/[EMAIL PROTECTED]/ ---------------------------------------------------------------------
