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</o:shapelayout></xml><![endif]--></head><body lang=EN-US link=blue vlink=purple><div class=WordSection1><p class=MsoPlainText>Dave, I'm not the one having the problem and asking the question; but I was responding to your statement that the timing is set to 6° @ 750 RPM, which does not agree with what is published in the BMC workshop manual for the Mk III engine (see attached). My Glenn's AUSTIN AUSTIN-HEALEY REPAIR AND TUNEUP GUIDE (copyright 1965, and also says CHILTON 1432 on the spine) gives the same numbers as the BMC manual. I do understand what you mean about the advance (I have a Mallory Dual-Point distributor with mechanical advance only), but questioned where your numbers came from. <o:p></o:p></p><p class=MsoPlainText><o:p> </o:p></p><p class=MsoPlainText><o:p> </o:p></p><p class=MsoPlainText>Steve Byers<o:p></o:p></p><p class=MsoPlainText>HBJ8L/36666<o:p></o:p></p><p class=MsoPlainText>BJ8 Registry<o:p></o:p></p><p class=MsoPlainText>AHCA Delegate at Large<o:p></o:p></p><p class=MsoPlainText>Havelock, NC <o:p></o:p></p><p class=MsoPlainText><o:p> </o:p></p><p class=MsoPlainText><o:p> </o:p></p><p class=MsoPlainText><o:p> </o:p></p><p class=MsoPlainText>-----Original Message-----<br>From: David Porter [mailto:frogeye@porterscustom.com] <br>Sent: Monday, August 14, 2017 8:53 AM<br>To: BJ8Healeys; healeys@autox.team.net<br>Subject: Re: [Healeys] Carb Adjustment Help Requested - BJ8 MkIII</p><p class=MsoPlainText><o:p> </o:p></p><p class=MsoPlainText>Steve, my Glenn's book shows the dist as 40966A/B with centrifugal advance starting at 500RPM with 7.5 degrees, max centrifugal adds 19 more degrees at 3200RPM plus another 8 for the vacuum advance giving a total max of 34.5 degrees. Thus if at 3200RPM your total is more than<o:p></o:p></p><p class=MsoPlainText>34.5 back off the initial. If your strobe light won't allow you to calculate total, get one that will. ;~) Healey engines are very good at not pinging audibly. Can't count the number of engines I've seen with damaged ring lands from too much advance.<o:p></o:p></p><p class=MsoPlainText><o:p> </o:p></p><p class=MsoPlainText><o:p> </o:p></p><p class=MsoPlainText>On 8/13/2017 6:41 PM, BJ8Healeys wrote:<o:p></o:p></p><p class=MsoPlainText>> Dave, are you sure about those numbers? I believe the manual <o:p></o:p></p><p class=MsoPlainText>> specifies 10 BTDC static and 15 BTDC @ 600 RPM.<o:p></o:p></p><p class=MsoPlainText>><o:p> </o:p></p><p class=MsoPlainText>> Steve Byers<o:p></o:p></p><p class=MsoPlainText>> HBJ8L/36666<o:p></o:p></p><p class=MsoPlainText>> BJ8 Registry<o:p></o:p></p><p class=MsoPlainText>> AHCA Delegate at Large<o:p></o:p></p><p class=MsoPlainText>> Havelock, NC<o:p></o:p></p><p class=MsoPlainText>><o:p> </o:p></p><p class=MsoPlainText>><o:p> </o:p></p><p class=MsoPlainText>> -----Original Message-----<o:p></o:p></p><p class=MsoPlainText>> From: Healeys [<a href="mailto:healeys-bounces@autox.team.net"><span style='color:windowtext;text-decoration:none'>mailto:healeys-bounces@autox.team.net</span></a>] On Behalf Of <o:p></o:p></p><p class=MsoPlainText>> David Porter<o:p></o:p></p><p class=MsoPlainText>> Sent: Sunday, August 13, 2017 7:20 PM<o:p></o:p></p><p class=MsoPlainText>> To: Bob England; <a href="mailto:healeys@autox.team.net"><span style='color:windowtext;text-decoration:none'>healeys@autox.team.net</span></a><o:p></o:p></p><p class=MsoPlainText>> Subject: Re: [Healeys] Carb Adjustment Help Requested - BJ8 MkIII<o:p></o:p></p><p class=MsoPlainText>><o:p> </o:p></p><p class=MsoPlainText>> what are the compression numbers? Timing is set at 750RPM and 6 <o:p></o:p></p><p class=MsoPlainText>> degrees BTDC. Is it better or worse with chokes engaged? DP<o:p></o:p></p><p class=MsoPlainText>><o:p> </o:p></p><p class=MsoPlainText>><o:p> </o:p></p><p class=MsoPlainText>><o:p> </o:p></p><p class=MsoPlainText>> On 8/13/2017 3:23 PM, Bob England wrote:<o:p></o:p></p><p class=MsoPlainText>>> I've had a rough idle in the car since we picked it up in May and it <o:p></o:p></p><p class=MsoPlainText>>> seems to have gotten worse ever so slightly since then.<o:p></o:p></p><p class=MsoPlainText>>><o:p> </o:p></p><p class=MsoPlainText>>> I've putzed around trying the easy stuff and finally got the bullet <o:p></o:p></p><p class=MsoPlainText>>> and pulled the carbs yesterday (that was fun!) as one of the carb <o:p></o:p></p><p class=MsoPlainText>>> pistons was sticking ever so slightly. Stripped the carbs except for <o:p></o:p></p><p class=MsoPlainText>>> the throttle<o:p></o:p></p><p class=MsoPlainText>> shaft<o:p></o:p></p><p class=MsoPlainText>>> and found the floats were set a bit low. Put it all back together <o:p></o:p></p><p class=MsoPlainText>>> and<o:p></o:p></p><p class=MsoPlainText>> still<o:p></o:p></p><p class=MsoPlainText>>> having an issue as she is running quite rich, hence the call for help.<o:p></o:p></p><p class=MsoPlainText>>><o:p> </o:p></p><p class=MsoPlainText>>> Car: late '64 build BJ8 MkIII<o:p></o:p></p><p class=MsoPlainText>>> Carbs : HD8 (I think they were new about 15 years ago - not original <o:p></o:p></p><p class=MsoPlainText>>> to car).<o:p></o:p></p><p class=MsoPlainText>>> Cam : Dennis Welch DWR-1 (installed about 15 years ago).<o:p></o:p></p><p class=MsoPlainText>>> Distributor : stock with Petronix Ignitor (Petronix installed last <o:p></o:p></p><p class=MsoPlainText>>> weekend in the hopes it would help). New rotor.<o:p></o:p></p><p class=MsoPlainText>>> Coil : Lucas Sportcoil<o:p></o:p></p><p class=MsoPlainText>>> Plugs : new Autolite gapped at 25 (installed a couple of weekends <o:p></o:p></p><p class=MsoPlainText>>> ago) Timing : 15 degrees with strobe (my attempt at static timing was <o:p></o:p></p><p class=MsoPlainText>>> a dismal failure!).<o:p></o:p></p><p class=MsoPlainText>>><o:p> </o:p></p><p class=MsoPlainText>>> I set the carbs as per the manual - 3.5 turns open on the idle trim <o:p></o:p></p><p class=MsoPlainText>>> screws and 2.5 turn rich on the jet adjusting screw. Fast idle <o:p></o:p></p><p class=MsoPlainText>>> adjusting screw completely off of the cam lobe.<o:p></o:p></p><p class=MsoPlainText>>><o:p> </o:p></p><p class=MsoPlainText>>> The best I can get it is with the jets totally lean (i.e. not sitting <o:p></o:p></p><p class=MsoPlainText>>> on<o:p></o:p></p><p class=MsoPlainText>> the<o:p></o:p></p><p class=MsoPlainText>>> cam lobe) and the fast idle screws setting the idle speed. Idle trim<o:p></o:p></p><p class=MsoPlainText>> screws<o:p></o:p></p><p class=MsoPlainText>>> backed way out with little impact on idle. Carbs are still running rich.<o:p></o:p></p><p class=MsoPlainText>>><o:p> </o:p></p><p class=MsoPlainText>>> I think I have memorized the adjustment procedure from the manuals I <o:p></o:p></p><p class=MsoPlainText>>> read them so many time - (Bentley, BMC, and Haynes), and Norman <o:p></o:p></p><p class=MsoPlainText>>> Nock's<o:p></o:p></p><p class=MsoPlainText>> wonderful<o:p></o:p></p><p class=MsoPlainText>>> collection of papers.<o:p></o:p></p><p class=MsoPlainText>>><o:p> </o:p></p><p class=MsoPlainText>>> Should I be going to a leaner needle in the carbs? Or am I just <o:p></o:p></p><p class=MsoPlainText>>> screwing<o:p></o:p></p><p class=MsoPlainText>> up<o:p></o:p></p><p class=MsoPlainText>>> somewhere? This is my first attempt at adjusting SU's and I'm not <o:p></o:p></p><p class=MsoPlainText>>> too<o:p></o:p></p><p class=MsoPlainText>> happy<o:p></o:p></p><p class=MsoPlainText>>> with what I have done so far.<o:p></o:p></p><p class=MsoPlainText>>><o:p> </o:p></p><p class=MsoPlainText>>> Any and all suggestions appreciated (except maybe if I have to yank <o:p></o:p></p><p class=MsoPlainText>>> the carbs again).<o:p></o:p></p><p class=MsoPlainText>>><o:p> </o:p></p><p class=MsoPlainText>>> Thanks in advance.<o:p></o:p></p><p class=MsoPlainText>>><o:p> </o:p></p><p class=MsoPlainText>>> Bob England<o:p></o:p></p><p class=MsoPlainText>>><o:p> </o:p></p><p class=MsoPlainText>>> _______________________________________________<o:p></o:p></p><p class=MsoPlainText>>> Support Team.Net <a href="http://www.team.net/donate.html"><span style='color:windowtext;text-decoration:none'>http://www.team.net/donate.html</span></a> Suggested annual <o:p></o:p></p><p class=MsoPlainText>>> donation $12.75<o:p></o:p></p><p class=MsoPlainText>>> Archive: <a href="http://www.team.net/archive"><span style='color:windowtext;text-decoration:none'>http://www.team.net/archive</span></a><o:p></o:p></p><p class=MsoPlainText>>> Forums: <a href="http://www.team.net/forums"><span style='color:windowtext;text-decoration:none'>http://www.team.net/forums</span></a><o:p></o:p></p><p class=MsoPlainText>>><o:p> </o:p></p><p class=MsoPlainText>>> <a href="mailto:Healeys@autox.team.net"><span style='color:windowtext;text-decoration:none'>Healeys@autox.team.net</span></a><o:p></o:p></p><p class=MsoPlainText>>> <a href="http://autox.team.net/mailman/listinfo/healeys"><span style='color:windowtext;text-decoration:none'>http://autox.team.net/mailman/listinfo/healeys</span></a><o:p></o:p></p><p class=MsoPlainText>>><o:p> </o:p></p><p class=MsoPlainText>>> Unsubscribe/Manage:<o:p></o:p></p><p class=MsoPlainText>> <a href="http://autox.team.net/mailman/options/healeys/frogeye@porterscustom.co"><span style='color:windowtext;text-decoration:none'>http://autox.team.net/mailman/options/healeys/frogeye@porterscustom.co</span></a><o:p></o:p></p><p class=MsoPlainText>> m<o:p></o:p></p><p class=MsoPlainText>>><o:p> </o:p></p><p class=MsoPlainText>>><o:p> </o:p></p><p class=MsoPlainText><o:p> </o:p></p><p class=MsoPlainText>--<o:p></o:p></p><p class=MsoPlainText>Dave Porter Porter Custom Bicycles 2909 Arno St. NE Albuquerque, NM<o:p></o:p></p><p class=MsoPlainText>87107 505-352-1378 Go HERE: my world <a href="http://www.porterbikes.com/"><span style='color:windowtext;text-decoration:none'>www.porterbikes.com/</span></a><o:p></o:p></p><p class=MsoPlainText><o:p> </o:p></p><p class=MsoPlainText>---<o:p></o:p></p><p class=MsoPlainText>This email has been checked for viruses by AVG.<o:p></o:p></p><p class=MsoPlainText><a href="http://www.avg.com"><span style='color:windowtext;text-decoration:none'>http://www.avg.com</span></a><o:p></o:p></p></div></body></html>