Disi-MZResponse

You could do the cams without pulling the motor, it would just require some more patience.

Would it be the end of the world if you did switch cams back to a stock like setup?

You have such an exotic setup that it seems like you have barely scratched the surface on, maybe it would be easier for you to progress the tune with a stock like cam?

 

I tried to swap the cams out already. The blind plug for the tensioner stripped out, so now I have to pull the entire cover to get it out. If I get new cams to throw in here, I'll probably order a custom grind from Kelford.

 

Yes, you did mention that. Sorry.

 

Plan established.

Gonna go full VTA with a couple cheap parts from Amazon (to arrive on Tues); both ports on the Radium plate will have hoses dropped to just below oil pan height, and the currently capped off rear valve cover port will get a breather. If this adds a bunch of power, I'll invest in a Pu valve cover and some other shit to sort it out, though I'll need to monitor oil consumption to see if it improves or just leaves a greasy trail behind me wherever I go (obviously I won't be permitted to race on a track lol).

My pistons are already gas ported so I'm not worried about ring sealing.

This is the easiest, fastest, and cheapest route forward to determine if it will be worth going forward on this engine in the future.

 

To back up last nights pull, went and hit my usual spot. Higher altitude, warmer air, shit driver, etc.

 

Couldn't make the VC breather work, so just dual 5/8" hoses strapped to the CS cross brace.

Looks like I need to start over on the tune, provided I'm not losing oil faster than I was previously. Speaking of which, I wound up having to wash the intercooler out, and all the existing pcv hoses were full of oil (the PCV valve was gunked shut too).

Anyways, here's the results of this test:

 

What's up with the random power spike

 

Dunno, maybe hit a good patch of timing or something, or the rings finally sealed for the first time. Lol

Super basic timing map, completely reworked and rescaled (used in the past several posted vdynos):


I think I just need to start over on the tune, and dial it in properly.

 

Curious to see what your vvt is like with this set up

 

Zero.
Edit: Since it seems to run a bit better, I might add it back in now.

 

Interesting turn of events; car has woken up (as above, about 3k rpm to 7500 blip), seems to smoke a touch less. Oil consumption unknown to my eye so might also have improved (seems unchanged after a single pull, but hard to tell).

New basemap needs a MAFCAL:


Compared to last run, which had no VVT and about 4-5 deg timing more than new base:

Since I'll be gaining about 6-10% fueling up top, might be time for the 15 PSI spring (though I probably won't because lazy:



Fueling corrections I'll be making tomorrow (using my fitted curve spreadsheet):
MAFV = Adjustment
1.18v = 0.977
1.88v = 0.937
3.00v = 1.0000
3.50v = 0.9469
4.00v = 0.9422
4.10v = 0.9093
4.20v = 0.9306

 

Fuck yes!

 

Sweet, excited to see some progress!

 

Lol watch you had a 100 hp crank case pressure problem

 

I still dont really know what I'm looking at but seems like progress.

Do you still think the cams arent right?

 

Enki is now woke

 

It is progress; no idea if the cams are right yet.

 

Rev 1, fuel only. Fucked up on the math (didn't doublecheck values), so had to redo the CAL (17.5 AFR at idle). Looking better, but I bet that that dip up top is actually still crankcase evac related.

 

Done fucking with it for the week; hit 4.14v due to temps, so down on power a bit. Had my pops in the car as well; neither of us remember anything other than a smooth pull, so not sure if the bump is logging lag or the rings sealing properly.

Checked oil level again prior to this pull (beat the shit out of it today) and again, can't tell if there's any oil loss, so seriously considering buying a new Genpu VC.



Edit: Bonus 2step log data from my driveway. Shit's insane.


End of line.

 

If you cant find a gen2 valve cover, just modify yours and be done with it.

I swapped the baffle cover for perforated sheeting on mine, here is a pic. The breather holes are bigger on the gen2 than the gen1/ms6.




So if you want gen2 venting, just drill the holes out a little wider and make a splatter shield for the oil cap like how Maisonvi did to his a while back. Again... if you cannot find a gen 2 valve cover.