Sealik Posted October 2, 2011 Report Share Posted October 2, 2011 I hooked up a 2 piece switch for the starter....first piece is hard wired, second piece plugs in when I want to set valves, compression/leakdown test etc. Speeds things up considerably, all intakes than all exhausts. Usually...all the valves don't have to be set....so...under 5 mins Quote Link to comment
FiveSeventyZee Posted October 11, 2011 Report Share Posted October 11, 2011 so this is probably a repeat question but what are the gaps supposed to be? in the vid you say 8, 9, 10 & 11 but what are the units? Quote Link to comment
Sealik Posted October 11, 2011 Report Share Posted October 11, 2011 .010" intake/.012" exhaust for stock L...hot engine 1-2 thousands less for aftermarket cam .006"-.008" cold...readjust to 'stock' specs when warmed up. as in Inches 1 Quote Link to comment
mklotz70 Posted October 11, 2011 Author Report Share Posted October 11, 2011 Thanks Sealik :) Quote Link to comment
FiveSeventyZee Posted October 11, 2011 Report Share Posted October 11, 2011 so for an all stock L18 I want .010 and .012 after warming it up? Quote Link to comment
mklotz70 Posted October 12, 2011 Author Report Share Posted October 12, 2011 Don't know off hand, but it's probably in here..... http://www.davidcmurphy.com/olddat/data/Service_Manual_Model_L16_&_L18_Series_Engines.pdf ....which can be found here. :) http://www.davidcmurphy.com/olddat/620tech.htm 1 Quote Link to comment
Radiant-Designer Posted October 17, 2011 Report Share Posted October 17, 2011 WOW, I was totally trying to put the feeler gauges in the wrong place, it goes unfer the lobes of the CAM!?!? no wnder why I thought my valves were all wrong. Looks like I am going back to check them again this week.... good thing I knew something was off and I decided to put the valve cover back on before changing anything. Quote Link to comment
mklotz70 Posted October 17, 2011 Author Report Share Posted October 17, 2011 The difference is because it's an overhead cam. If this were a pushrod motor, you'd check them where you're thinking you'd check them :) Quote Link to comment
mklotz70 Posted September 15, 2012 Author Report Share Posted September 15, 2012 Nothing new, just combined the two vids into one and uploaded it to youtube. Quote Link to comment
Pacific coast Datsun Posted September 16, 2012 Report Share Posted September 16, 2012 Thanks for the how to vids Mike. Very helpfull indeed. How often should L series valves be adjusted ? Quote Link to comment
mklotz70 Posted September 16, 2012 Author Report Share Posted September 16, 2012 Thanks Mark :) I really don't know off hand. I'm sure it's in the manuals. Our 521 gets driven so little that I haven't done it in at least 6 years. Quote Link to comment
nismo dr Posted September 16, 2012 Report Share Posted September 16, 2012 The old timers at work say it was part of a 15,000 mile tune-up w/new. I end up having my valve cover off so often I do it about twice a year :rofl: Quote Link to comment
mklotz70 Posted September 16, 2012 Author Report Share Posted September 16, 2012 15,000mi?! LOL....I'll never have to adjust ours again!! :) Quote Link to comment
Pacific coast Datsun Posted September 18, 2012 Report Share Posted September 18, 2012 Kool..was just wondering. I do the valves in the boat (L 20) at the start of summer..so once a year. Same goes for the 620. Quote Link to comment
DAT510 Posted September 18, 2012 Report Share Posted September 18, 2012 Quick question, are you sticking the feeler gauges in between the rocker and cam lobe? Quote Link to comment
I'm BLUE Posted September 18, 2012 Report Share Posted September 18, 2012 Quick question, are you sticking the feeler gauges in between the rocker and cam lobe? Correct Quote Link to comment
DAT510 Posted September 18, 2012 Report Share Posted September 18, 2012 Correct Sweet! Yeah I did my first valve adjustment on a pushrod J13, so it sorta threw me off :lol: Quote Link to comment
I'm BLUE Posted September 18, 2012 Report Share Posted September 18, 2012 Sweet! Yeah I did my first valve adjustment on a pushrod J13, so it sorta threw me off :lol: :lol: Lowest point of the cam and center "contact" pad area of the rocker arm as you already visualize in your head ;) Quote Link to comment
ohmrchristopher Posted February 9, 2013 Report Share Posted February 9, 2013 Gonna do this, this weekend. Can I get a definition of cold vs hot and can I run the engine w/o the vavle cover or will I make a mess? Quote Link to comment
datzenmike Posted February 10, 2013 Report Share Posted February 10, 2013 It will likely make a mess so just set the valve cover on in place while you re-warm. Quote Link to comment
datzenmike Posted February 10, 2013 Report Share Posted February 10, 2013 If you set the motor to TDC (compression stroke #1 )you can check set half the valves. Rotate ONE turn to TDC (exhaust stroke #1) and you can set the other half before the motor cools. 1 Quote Link to comment
mklotz70 Posted February 10, 2013 Author Report Share Posted February 10, 2013 I tend to set them cold, then check them again once it's warmed up to full operating temp. Fighting with the lock nuts and adjusters with hot oil is less than pleasant. Quote Link to comment
oldskoolvws Posted February 10, 2013 Report Share Posted February 10, 2013 For feeler gauges, these are the best I own. http://buy1.snapon.com/catalog/item.asp?P65=&tool=all&item_ID=637119&group_ID=675337&store=snapon-store&dir=catalog Quote Link to comment
TENDRIL Posted May 7, 2013 Report Share Posted May 7, 2013 .010" intake/.012" exhaust for stock L...hot engine 1-2 thousands less for aftermarket cam .006"-.008" cold...readjust to 'stock' specs when warmed up. as in Inches so for a cam that is 280/480 the above is true ? because ive set my valves twice hot at .010 /.012 and with a make shift stethoscope all the valves seem to still be chattering oil level is right but im starting to think what sealik said is becoming true for my situation ? any ideas Quote Link to comment
mklotz70 Posted May 7, 2013 Author Report Share Posted May 7, 2013 Beyond me....I do stock....that's it. Quote Link to comment
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