07-08-2019, 11:13 AM
not much new to report, really. just gas and go lately. we did another ~700mi roadtrip in it recently and that triggered a wave of scheduled and unscheduled maintenance that all ended well. currently sitting at ~102k.
so we headed up to Roanoke for a quick few days to see family for the 4th + a birthday and decided to take the Si since we were packing relatively light. for us that means 3 people and a dog and a full trunk including a folded up dog crate, fishing gear, and a cooler full of beer. managed about 31mpg with the AC cranked and alternating between a 78mph cruise and some bumper to bumper stop and go.
the unscheduled maintenance - AC was blowing warm about 2 weeks prior to leaving. figured i had a slow leak and went in for a recharge the day before leaving. left the shop and it was still blowing a limp 75 degree breeze. shit. i started wondering if the rallyx dust and vibration broke something in the system. stayed up half the night researching what it could be - fearing the worst which was a potential compressor replacement ($$$) and decided to try resetting the HVAC control panel as a hail mary move. press/hold the AC and Recirc button, ignition on, then the panel runs all the settings through and clears any stored codes. IT WORKED. couldn't believe it. my guess is that the blend door was stuck in between the evaporator and heater core and was just bleeding heat into the airstream. i don't know a thing about AC systems but at least if this ever happens again i have a few leads to go on after my crash course.
anyway, aside from awful traffic in Charlotte in triple digit heat it was a nice ride. took it up on the parkway to Peaks Of Otter early Friday in freak 75 degree weather and it was magic. low clouds were pouring over the ridges and i was so glad to enjoy the car on some proper roads even if i had to keep things very tame with everyone in the car. you VA guys are so lucky to have this in your back yard.
stopped in Charlotte at Dorton Park for a picnic lunch. if you guys are on 85 passing through, its a great little place to pull off just off the highway and stretch out.
after getting home it was time for an oil change, almost exactly a year from the last one i did. this time i ran the oil change up to 8200 miles and collected a bit for a Blackstone analysis. this will likely be my last one - i'm content with an annual change and just looking to see if i need to pull it back a bit. Mobil 0W-40 went back in, because it just works and is filthy cheap at wally world.
at the same time, the K20 calls for valve lash adjustment at 100k miles. i grabbed a Mahle gasket kit which was a nice value compared to an OEM set and all the rubber parts look very high quality - much as i remember their stuff being from when i used their products in my Audi days. grabbed a set of bent feeler gauges too so i could get to things easier. set the car up for the night to come down to stone cold and up on stands for an oil drain.
there's no getting around that the engine bay is tight. you can see where Honda went to legit lengths to try to make servicing the car a priority - things are loomed together, minimal attachment points, clearance where they could make it. its appreciated, but its still a process. ultimately i got the cover cracked off without much drama and was greeted with a very clean valvetrain. the inside of the valve cover was totally free of sludge. very pleased overall.
certainly some cam lobe wear, but absolutely nothing out of the ordinary to my eyes. chain looked fine, guides have some wear but plenty of life. i honestly could have just reused the valve cover gaskets, all of them were completely gummy without a trace of cracking.
no shots of the valve adjustment but it was pretty textbook - intake side was a bit loose, exhaust was a bit tight, and all cylinders were slightly inconsistent. adjusted to .09" clearance on intake and a loose .10" on exhaust, in an attempt to hit right in the middle of the spec. Honda conveniently makes a port in the passenger wheel well where you can turn the crank pulley with a 19mm socket to turn the engine over by hand, which I did to adjust cyl 1, 3, 4, and 2 in that order. this is my first time doing valve lash and its not hard, just tedious. i found the most difficult thing just being consistent - i had to go back 2 or 3 times to get everything to feel exactly the same across cylinders.
no, i didn't take the chance to paint the valve cover something ridiculous. personal rule is Honda valve covers should only change color for special OEM models or legit internal work. maybe some day if i get those cams i want...
anyway, cover back on with a dab of Hondabond in a handful of spots. sat another night to let the Hondabond cure. drove around today and nothing was leaking or on fire, so i'll call it a success. seems a bit less tappy when cold, but otherwise ready for another 100k.
next up: coolant change and then headed for the NC mountains for a weekend with some buds and a chance to really stretch the Si's legs a bit.
so we headed up to Roanoke for a quick few days to see family for the 4th + a birthday and decided to take the Si since we were packing relatively light. for us that means 3 people and a dog and a full trunk including a folded up dog crate, fishing gear, and a cooler full of beer. managed about 31mpg with the AC cranked and alternating between a 78mph cruise and some bumper to bumper stop and go.
the unscheduled maintenance - AC was blowing warm about 2 weeks prior to leaving. figured i had a slow leak and went in for a recharge the day before leaving. left the shop and it was still blowing a limp 75 degree breeze. shit. i started wondering if the rallyx dust and vibration broke something in the system. stayed up half the night researching what it could be - fearing the worst which was a potential compressor replacement ($$$) and decided to try resetting the HVAC control panel as a hail mary move. press/hold the AC and Recirc button, ignition on, then the panel runs all the settings through and clears any stored codes. IT WORKED. couldn't believe it. my guess is that the blend door was stuck in between the evaporator and heater core and was just bleeding heat into the airstream. i don't know a thing about AC systems but at least if this ever happens again i have a few leads to go on after my crash course.
anyway, aside from awful traffic in Charlotte in triple digit heat it was a nice ride. took it up on the parkway to Peaks Of Otter early Friday in freak 75 degree weather and it was magic. low clouds were pouring over the ridges and i was so glad to enjoy the car on some proper roads even if i had to keep things very tame with everyone in the car. you VA guys are so lucky to have this in your back yard.
stopped in Charlotte at Dorton Park for a picnic lunch. if you guys are on 85 passing through, its a great little place to pull off just off the highway and stretch out.
after getting home it was time for an oil change, almost exactly a year from the last one i did. this time i ran the oil change up to 8200 miles and collected a bit for a Blackstone analysis. this will likely be my last one - i'm content with an annual change and just looking to see if i need to pull it back a bit. Mobil 0W-40 went back in, because it just works and is filthy cheap at wally world.
at the same time, the K20 calls for valve lash adjustment at 100k miles. i grabbed a Mahle gasket kit which was a nice value compared to an OEM set and all the rubber parts look very high quality - much as i remember their stuff being from when i used their products in my Audi days. grabbed a set of bent feeler gauges too so i could get to things easier. set the car up for the night to come down to stone cold and up on stands for an oil drain.
there's no getting around that the engine bay is tight. you can see where Honda went to legit lengths to try to make servicing the car a priority - things are loomed together, minimal attachment points, clearance where they could make it. its appreciated, but its still a process. ultimately i got the cover cracked off without much drama and was greeted with a very clean valvetrain. the inside of the valve cover was totally free of sludge. very pleased overall.
certainly some cam lobe wear, but absolutely nothing out of the ordinary to my eyes. chain looked fine, guides have some wear but plenty of life. i honestly could have just reused the valve cover gaskets, all of them were completely gummy without a trace of cracking.
no shots of the valve adjustment but it was pretty textbook - intake side was a bit loose, exhaust was a bit tight, and all cylinders were slightly inconsistent. adjusted to .09" clearance on intake and a loose .10" on exhaust, in an attempt to hit right in the middle of the spec. Honda conveniently makes a port in the passenger wheel well where you can turn the crank pulley with a 19mm socket to turn the engine over by hand, which I did to adjust cyl 1, 3, 4, and 2 in that order. this is my first time doing valve lash and its not hard, just tedious. i found the most difficult thing just being consistent - i had to go back 2 or 3 times to get everything to feel exactly the same across cylinders.
no, i didn't take the chance to paint the valve cover something ridiculous. personal rule is Honda valve covers should only change color for special OEM models or legit internal work. maybe some day if i get those cams i want...
anyway, cover back on with a dab of Hondabond in a handful of spots. sat another night to let the Hondabond cure. drove around today and nothing was leaking or on fire, so i'll call it a success. seems a bit less tappy when cold, but otherwise ready for another 100k.
next up: coolant change and then headed for the NC mountains for a weekend with some buds and a chance to really stretch the Si's legs a bit.
2010 Civic Si
2019 4Runner TRD Off-Road
--------------------------
Past: 03 Xterra SE 4x4 | 05 Impreza 2.5RS | 99.5 A4 Quattro 1.8T | 01 Accord EX | 90 Maxima GXE | 96 Explorer XLT
2019 4Runner TRD Off-Road
--------------------------
Past: 03 Xterra SE 4x4 | 05 Impreza 2.5RS | 99.5 A4 Quattro 1.8T | 01 Accord EX | 90 Maxima GXE | 96 Explorer XLT