Building for the road course...again
- Thread starter gotovato
- Start date
- Watchers 22
drinks first and during
just dont try to put the valvecover back on hammered
just dont try to put the valvecover back on hammered
gotovato
Greenie N00B Member
Lashed the valves. A few were tight. A few were loose. Nothing was totally out though. Not in a huge way anyways. Kinda how I figured.
here’s a video from tonight of my turning the engine over by hand. Everything looks *ok* to me. I don’t know. Fuck
https://youtube.com/shorts/mPEAhdzHr3g?feature=share
here’s a video from tonight of my turning the engine over by hand. Everything looks *ok* to me. I don’t know. Fuck
https://youtube.com/shorts/mPEAhdzHr3g?feature=share
How does the chain tensioner work? Is it ratchet and oil pressure? Is it locking into place? If the ratchet portion isn't working right it could be relaxing and letting your chain slap until the oil starts to flow and gets the oil pressure up
gotovato
Greenie N00B Member
This is my oem chain tensioner. I replaced it with a inline pro branded tensioner. That’s supposed to be the best one. The “go to” for any cam/valve train upgrade.
it works the same like oem it just has a stiffer internal spring, and harder/more defined locking/ratcheting teeth.
The internal spring keeps tension while there’s no oil pressure. Once you have pressure that is what keeps the tension.
one thought was yes maybe it is a bad chain tensioner. I thought about maybe swapping my oem one back in to test
gotovato
Greenie N00B Member
Same noise. I’ll give the exhaust a check
That's exactly the type of tensioner I was talking about. I wonder if the spring is broken/missing. The drain is small on those so it could explain the 4hour cool down
Can't say without being there just throwing it out as something to investigate
Have you run the car with the belt off? Just to eliminate any pulley noise as a possibility
gotovato
Greenie N00B Member
I really should try with the belt off. I doubt that’s the issue but it’s possible for sure.
I’m also considering swapping the tensioner so maybe I’ll do that before swapping the gear. It does seem like it’s a bad vtc gear though. I remember when I brake cleaned the cams. Exhaust cam brake clean came flying out of all the holes when I sprayed into 1 of the oil holes. With the intake cam…the brake clean just kinda oozed out slowly. Maybe a blockage ?
here’s a good suggestion I got from the k20 forums. I’m gonna try this I think
I’m also considering swapping the tensioner so maybe I’ll do that before swapping the gear. It does seem like it’s a bad vtc gear though. I remember when I brake cleaned the cams. Exhaust cam brake clean came flying out of all the holes when I sprayed into 1 of the oil holes. With the intake cam…the brake clean just kinda oozed out slowly. Maybe a blockage ?
here’s a good suggestion I got from the k20 forums. I’m gonna try this I think
gotovato
Greenie N00B Member
I tried the above. It appears the vtc gear maybe takes 10 seconds or so to match commanded advance. I believe this is normal. This being said the more videos I watch the more it sounds like it’s the bad vtc gear. I’ll start it up again in a few hours to confirm.
the thing also sprung a coolant leak somewhere. I can’t find it but it’s leaking good. Too cold to really spend any time out there right now
the thing also sprung a coolant leak somewhere. I can’t find it but it’s leaking good. Too cold to really spend any time out there right now
10 seconds. That's a pretty long time in terms of counts. Is that test run on first cold start? Or have you repeated the test with a warm start up?
For example run the engine to operating temperature and then let it sit for 2-3 minutes and then retest.
gotovato
Greenie N00B Member
Just went out again to fire it up. It’s been 5 hours.
it sounded like rattle until commanded vtc and actual lined up. It took about 10 seconds again. Maybe little less this time. I watched vtc start at 0 then slowly work it’s way up to 20*. I’m having a hard time listening to all these sounds now.
This time I didn’t hear that broken ass sound. Just injector and loud valve train.
I’m probably going crazy by now
it sounded like rattle until commanded vtc and actual lined up. It took about 10 seconds again. Maybe little less this time. I watched vtc start at 0 then slowly work it’s way up to 20*. I’m having a hard time listening to all these sounds now.
This time I didn’t hear that broken ass sound. Just injector and loud valve train.
I’m probably going crazy by now
gotovato
Greenie N00B Member
I should try this. Part of me is like yes 100% vtc rattle. Part of me is like no 100% it’s not the vtc. I don’t know anymore
If the vtc actuator was bad and making noise like the vid or your car, would there not be damage marks some where like on Speed valve covers? Does anyone on the K20 forums know of a potential spot to check?
Yours may not have failed, but may be lazy?
Yours may not have failed, but may be lazy?
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