the official OBS diesel off topic thread
yeah, I watched that a few days ago! I have been waiting for 2 years to see the completion of that thing. It.....is.....epic!!!!
Join Date: Jan 2012
Location: Southern West Virginia
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Yeah, I don't think that's going to buff out....
I'll tell you how in one word!
Cummins.
In other news, I would like to report that engine temperature seems to play little or no significance in the results of a compression test. Last night I tested 6 of the 8 holes in the engine in parts truck '14 before the grease gun tube popped (or at least I thought it did). I only had cylinders 6 and 8 left to do when I heard a loud "POP!" and the last two results were a lot lower. Replaced the hose tonight and completed the test on holes 6 and 8 and the retested the other 6 just for the sake of comparison. Absolutely no difference in readings. None. The first test was run with an EOT of 170* and tonight I finished it with the engine at about 72* ambient. No difference in readings on any of the holes. I'll test the engine in my truck as well and compare those results once I get my injector o-rings in the mail. That will be an even better test since I will be able to test at around 170* EOT and compare that to one done when it was about 20* ambient.
Long story short, don't worry about doing your compression tests at operating temperature. All it does is created a hundred places to burn yourself.
Oh and a new hose tonight reveals that the test results on holes 6 and 8 actually are lower than the rest anyway. Go figure.
I'll tell you how in one word!
Cummins.
In other news, I would like to report that engine temperature seems to play little or no significance in the results of a compression test. Last night I tested 6 of the 8 holes in the engine in parts truck '14 before the grease gun tube popped (or at least I thought it did). I only had cylinders 6 and 8 left to do when I heard a loud "POP!" and the last two results were a lot lower. Replaced the hose tonight and completed the test on holes 6 and 8 and the retested the other 6 just for the sake of comparison. Absolutely no difference in readings. None. The first test was run with an EOT of 170* and tonight I finished it with the engine at about 72* ambient. No difference in readings on any of the holes. I'll test the engine in my truck as well and compare those results once I get my injector o-rings in the mail. That will be an even better test since I will be able to test at around 170* EOT and compare that to one done when it was about 20* ambient.
Long story short, don't worry about doing your compression tests at operating temperature. All it does is created a hundred places to burn yourself.
Oh and a new hose tonight reveals that the test results on holes 6 and 8 actually are lower than the rest anyway. Go figure.
Couldn't agree more with how great this place is Byron.
Seriously Bill, I thought you had your fill of mustangs and stacks when you were texting those pics out. I think this is actually your super secret build and you're just testing the waters!!??
Numbers Nate?
On an actual truck note. As some of you know, I smoked an idler pulley at RRE. It still chirped a bit as we replaced it with Gabes (thanks again!) old one. I believe it was still chirping because when it spun itself, it actually cut into the accessories bracket a bit. The pulley itself is now just a hair cocked. As I was putting SCA into the degas bottle this evening, I noticed the belt had skipped a rib and cut a rib. Still operating just fine. The rib that was cut was kinda flopping though. Lol. Threw the spare belt that Nate gave me on (thanks again!) and away I went. Not sure what I'm going to do about it yet. I don't really need the truck but to get materials for the house, I don't have time to work on it, we are less than 10 weeks out for the baby and I don't even have drywall up yet!!! Trust me it's not for lack of effort. I guess I'll do the brake job on my DD this weekend and worry about the truck down the road. Cause I'm sure I'll have nothing but time with a new baby.......
Seriously Bill, I thought you had your fill of mustangs and stacks when you were texting those pics out. I think this is actually your super secret build and you're just testing the waters!!??
Numbers Nate?
On an actual truck note. As some of you know, I smoked an idler pulley at RRE. It still chirped a bit as we replaced it with Gabes (thanks again!) old one. I believe it was still chirping because when it spun itself, it actually cut into the accessories bracket a bit. The pulley itself is now just a hair cocked. As I was putting SCA into the degas bottle this evening, I noticed the belt had skipped a rib and cut a rib. Still operating just fine. The rib that was cut was kinda flopping though. Lol. Threw the spare belt that Nate gave me on (thanks again!) and away I went. Not sure what I'm going to do about it yet. I don't really need the truck but to get materials for the house, I don't have time to work on it, we are less than 10 weeks out for the baby and I don't even have drywall up yet!!! Trust me it's not for lack of effort. I guess I'll do the brake job on my DD this weekend and worry about the truck down the road. Cause I'm sure I'll have nothing but time with a new baby.......
That bring up a good question Gabe, could Todd just install a SD tensioner on this bracket to solve his issue? (well, the issue with is serp belt, at least...) I don't know exactly how the SD tensioner fastens on, but does it need that face that is buggered up?(the one on the bracket, I mean...)
Todd as for numbers I got about 360 PSI on 6 of 8. The other two (6 and 8) must have eaten some dust at one point or another because they're a little lower at about 310 and 330 each. That's more than the 10% deviation I was hoping to stay within but I guess it's still better than what I'm running now. I plan to test the compression again on the engine I'm running now when I do the injector o-rings and I'll compare the number then. That way I can decide whether the swap will be worth the effort. If the truck runs okay with different injectors an new o-rings in it, I may just keep this PSD on the stand as a spare and run the one that's in the truck until I either can't stand it anymore or it quits. I haven't fully decided what my plans are yet.
Todd as for numbers I got about 360 PSI on 6 of 8. The other two (6 and 8) must have eaten some dust at one point or another because they're a little lower at about 310 and 330 each. That's more than the 10% deviation I was hoping to stay within but I guess it's still better than what I'm running now. I plan to test the compression again on the engine I'm running now when I do the injector o-rings and I'll compare the number then. That way I can decide whether the swap will be worth the effort. If the truck runs okay with different injectors an new o-rings in it, I may just keep this PSD on the stand as a spare and run the one that's in the truck until I either can't stand it anymore or it quits. I haven't fully decided what my plans are yet.