smoke was grayish blue but hard to tell as it was not a thick cloud of it. Mike
Michael Knudson wrote: > After the head replacement I have been burning about half a quart every > 100-200 miles with 1 - 2 auto cross events in there. I did an evo > school locally a few weeks ago about burned about 1 quart in 25 40-50 > second runs. As for smoke I noticed a trail behind me this morning on > the drive to work gray in color and only under heavy acceleration. at > idle there is none, no smoke that I have seen at start up. unless the > car has sat for a few weeks or more. > > > before head replacement I burned 2.5 quarts in 150 miles and 1 autox > event. it was pretty bad. > > -Mike > > Chuck Wills wrote: > >> timing and oil burning are unrelated. the additional pressure might >> make an additional 3 or 4 foot pounds of torque... which is, what, >> maybe a 4% increase? That's not enough to change oil burning or ring >> sealing. >> >> How much oil are you consuming? Do you have a grey/blue cloud >> following your car? Is it worse when you let off the gas at high rpm? >> >> -Chuck >> >> ---------------------- >> >> Michael Knudson wrote: >> >>> />The ECU has no way of knowing where you have physically set the >>> timing. It assumes you are physically setting it to 10* and will report >>> that even if you physically set it to 20*. If you set it to 14*, it's >>> like adding an additional 4* over the entire timing map. The ECU >>> doesn't know this, though. >>> > >>> >As far as ignition timing having any effect on oil consumption.... it >>> doesn't. It's either coincidence or imagination. >>> >I'd say stick it back at 14* and run it that way. >>> > >>> >Have you done a leakdown and compression check to know that the rings >>> are bad? >>> > >>> -Chuck / >>> >>> @ Chuck, >>> >>> no leak down yet, compression comes to 160, 155, 162 , 160 (at 4100 >>> feet). need to check them again now there there is a more mileage on >>> the head. >>> as for burning oil, I know timing its self would have nothing to do >>> with it. but the increased pressure from the fuel igniting sooner would >>> right? the engine has just about 154k miles on it. >>> >>> >>> @ Larry, come to think of it, no I did not. guess thats what I get for >>> being in a hurry that night... >>> >>> Larry Alster wrote: >>> >>> >>>> Did you put the jumper in the diag block to adjust the timing? >>>> >>>> >>>> >>>> Larry >>>> >>>> White Knight 1991 Crystal White #99 CSP >>>> Silver Bullet 1992 Silverstone #17 SM2 FM I+ Turbo >>>> Honey B 1992 Sunburst Yellow #99 SM2L JR Supercharger >>>> Whooosh 2004 Titanium Mazdaspeed MX-5 >>>> >>>> LowCountry Miata http://www.lowcountrymiataclub.net >>>> Masters Miata >>>> RAGS 074 >>>> >>>> -----Original Message----- >>>> From: [EMAIL PROTECTED] >>>> [mailto:[EMAIL PROTECTED] On Behalf Of Michael Knudson >>>> Sent: Tuesday, June 24, 2008 4:37 PM >>>> To: [email protected] >>>> Subject: Adjusted timing to 14 on a 97 >>>> >>>> Hello, Just have a quick question for you. I adjusted the timing on my >>>> 97 NA to 14 degrees. We set it using a timing light and while keeping >>>> an eye on a scangauge in side the car to see what the ecu was saying it >>>> is. timing light says we are at ~14 but the ecu is still reporting 10 >>>> at idle. does it always report it as 10 or is there some other issue >>>> that I should be worried about. >>>> >>>> I will say this though, since I bumped the timing it runs much smoother >>>> and feels much quicker while accelerating. no more hesitation from >>>> 1k-4k rpm. >>>> >>>> >>>> I am going to drop it back off to 12 degrees on thursday. My rings seems >>>> to be letting more oil past now... just can't keep up with the extra >>>> pressure I guess. Hoping to have money for rebuild over the >>>> winter/spring. on that note, any tips on where I should look for parts >>>> and pricing on all that? head was recently replaced with a rebuilt >>>> unit. so I think just a head gasket and a lower end rebuild should be >>>> enough. >>>> >>>> >>>> Thank! >>>> _______________________________________________ >>>> Miatapower mailing list >>>> [email protected] >>>> http://list.miatapower.net/cgi-bin/mailman/listinfo/miatapower >>>> >>>> >>>> >>>> >>>> >>> _______________________________________________ >>> Miatapower mailing list >>> [email protected] >>> http://list.miatapower.net/cgi-bin/mailman/listinfo/miatapower >>> >>> >>> > _______________________________________________ > Miatapower mailing list > [email protected] > http://list.miatapower.net/cgi-bin/mailman/listinfo/miatapower > > _______________________________________________ Miatapower mailing list [email protected] http://list.miatapower.net/cgi-bin/mailman/listinfo/miatapower
