Welcome.. anytime you wanna buy me another 260z wreck just for the gearbox, say the word mate hehe
Chris Howard wrote: >Hi Chris, > >Does it blow black smoke at full throttle and high revs? > >To lean it out a bit, you can drop down one or two main jet sizes. This >leans out throughout the whole rev range from about 2k+ RPM (i.e. when >the main circuit becomes active). You can also/instead go a few sizes >larger in the air correctors. This leans out the top end (say 5000+) and >has little effect on the low end. The main jets are more sensitive than >the air jets, so you generally need to go at least 10 bigger on the airs >to notice a clear difference. I would probably drop down to a 145 or 140 >main and go up to a 170-180 air corrector to start with. Also, your >accelerator pump jet is unnecessarily large and is just pumping fuel out >the exhaust each time you floor it, drop down to a 40 if you can. > >Tuning blind is no fun, and can be risky... So I strongly recommend you >get hold of an air/fuel ratio meter first and at least check what your >existing mixtures are like, or even better get it on a dyno. > >As for the static ignition timing, this really depends on your dizzy and >what it's advance curve is like. What dizzy do you have? More important >than the static figure is how much total advance there will be once the >centrifugal advance in the distributor has come in (i.e. at high rpm). I >always check the total advance with a snap on timing light that you can >delay the flash by a certain no of degrees. You hold it at about 4500 >revs and delay the flash (with a button on the timing light) until it >lines up with the TDC mark. You can then read the amount of advance off >the timing light LED display. I found around 35 degrees of total advance >is good for a hot L series with twin carbs. With a S2 bluebird dizzy, >this usually ends up at about 15 BTDC static timing. Running this much >advance is pretty hard on the starter motor and can make it pretty hard >to turn over. L6 starters work great though, no need for an expensive >reduction starter. (Thanks Tom :) Also I would remove the vacuum advance >if it has one, these only work properly with webers if you get a vacuum >port from each runner and join them all up. > >Cheers, > >Chris Howard >[EMAIL PROTECTED] >http://turbovan.com > > > >>-----Original Message----- >>From: [EMAIL PROTECTED] >>[mailto:[EMAIL PROTECTED]] On Behalf Of Chris King >>Sent: Tuesday, 28 May 2002 10:10 PM >>To: [EMAIL PROTECTED] >>Subject: Re: twin weber settings att: Chris Howard >> >> >>Chris Thanks for the reply, >> >>I have always noticed it runs quite rich, what should i >>change to lean out >>the mixture a little. Also my car has always been set on 10 >>degrees advance. >>im now running premium unleaded is 15 BTDC a safe advance? >> >>Thanks again >> >>Chris King. >> > > --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]/ ---------------------------------------------------------------------
