DC231 wrote: ↑Sun Mar 08, 2020 12:38 pm
So your oil consumption issue... I wanted to ask a couple things about that.
It comes down to I need to get a leakdown test to see what is going on.. Plan on picking one up this week and seeing if I can get it done and report back what I find out.
Was the cylinder head rebuilt with the block?
When I had the block rebuilt, I went ahead and had the machine shop install new OEM valve stem seals. My friend who had the head mentioned it had bronze valve guides, which I did not get replaced since the head had less than 15k miles on it. But I question now whether I should have had them replaced after reading threads on bronze valve guides
This was the details I know of the head from his build thread over on t-i
the GSR Head now consists of:
-pnp
-3 angle valve job
-supertech valvetrain
-aupertech flat faced valves
-skunk2 lmas
-bronze valve guides
Have you changed the PCV valve? Are you losing it through your catch can setup?
I've tried multiple setups with no change, only thing I haven't tried putting the blackbox in, but I think that might make things worse
-The typical endyn setup with the breather and venting from the back of the block
-The Enydn setup with the PCV on top of the catchcan instead of the breather - This was horrible, and the car would create a smoke stream at autocross, which mirrors the situation solo_x had on his DSP ITR from this previous h-t thread:
https://honda-tech.com/forums/road-raci ... st38730576
-Valve cover venting to the endyn can with the breather
-Valve cover breather with the endyn can with the pcv on top, which appears due to the valve cover internal baffles and the endyn can's baffles, does not produce same issue like the back of the block.
In all setups, I ran the drainback either the traditional endyn method or straight to the bung on my oil pan. And I've tried OEM PCVs and Toyota Supra PCVs, so I don't think the consumption is from the PCV. When I was venting to atmosphere, and I would rev the motor from the TB wheel, it would always mist some smoke,.
Or leaks? Let's try narrowing it down.
No oil leaks, all of those were fixed over a 1.5 years ago. The main culprits were the oil pan gasket and the oil pump o-ring leaking. Since then, its been leak free.
This past month I've gone 200+ street miles of just regular street driving and occasional VTEC with no noticeable oil consumption as it is still on the top dot, which has been my experience, but I've switched back to conventional 10w30 Valvoline VR1, and on hard driving the 1-2 shift I can see the smoke from my rear view mirror from the VTEC Transition. But I've 10w30, 10w40, 5w40, 15w40 and all consume around the same amount of oil the minute I take it to an autocross event. The two track days I've done, I consumed the same amount of oil with a longer duration of hard driving, go figure.