I need a bigger turbo....

[8v-of-fury]

A hard shift from screaming third to second?

You probably over revved and jumped the advance on the timing with the pumps internal pressure suddenly sky rocketing. Lost boost because you took the fuel out of the pump faster than it could supply it? lol

[bbob203]

A hard shift from screaming third to second?

You probably over revved and jumped the advance on the timing with the pumps internal pressure suddenly sky rocketing. Lost boost because you took the fuel out of the pump faster than it could supply it? lol

Thats a much better description of what i kind of thought and am relived its nothing more.

In other news I've done more fine tuning I have my star wheel bottomed out i adjusted the smoke screw up some and turned my boost up to 20psi. The smoke is the same or better as when i started this thread and the power is much better and more even across the acceleration range. I also turned up the fuel screw some more to and my egt's are barely teetering on 1300*f. I think I may be at peak performance for the turbo pump injector setup i have. We will see what adjusting the dynamic timing will do when the shims arrive. I may end up going with some .216 injectors and see what they do for me. If 8v can run them w/ a k03 and not intercooled with less boost than me... I don't see why I  cant run them..

[8v-of-fury]

I may end up going with some .216 injectors and see what they do for me. If 8v can run them w/ a k03 and not intercooled with less boost than me... I don't see why I  cant run them..

They seem to be just fine. They are just the higher horsepower 1.9's injectors.. Not sure what turbo they run though.

[bbob203]

gonna snag some. 216's from veg injection next week.

[8v-of-fury]

Cannot beat the price. Good service too.

[bbob203]

Veg-216 nozzles on order! in other news I wound out fourth gear pretty far last night and had the same weird higher rpm hiccup. I hit certain spot and it just cuts out blows smoke and loses power. I let off and it recoops so to speak and its back to normal.

[libbydiesel]

What rpm?  I would think it was one of two things, either valve float from excessive EMP or the pump rollers are skipping on the camplate.  The skipping rollers would be something to avoid.

[bbob203]

<3500

[libbydiesel]

I wouldn't call 3500 high rpms.  It's not the pump rollers @ 3500.   

[bbob203]

I wouldn't call 3500 high rpms.  It's not the pump rollers @ 3500.   

I just ran an errand with it and took it up to almost 4000 rpm and it didn't happen so i guess it must have been higher.

[libbydiesel]

I run mine often up over 4,000 without issue.  I've had it up close to 5,000 but I don't like doing that.  I've never run that high with a k14 pushing 20 psi, tho. 

[bbob203]

So my turbo just may be running out of breathe? I have turned the boost down to 18 psi and it its solid no creeping. I guess we will just have to investigate when I come out.

So 2 possible causes? valve float/ high emp. Or camplate skipping?

[bbob203]

entertaining the idea of a busted valve spring.. if my engine is possibly a 1z w/ dual valve springs..

[CRSMP5]

1z had duel spring.. i thinking big outter one broke.. lets it float.. from boost...

but no idea when a 12mm will skip.. vs 11mm.. and i know ive exceeded 6k with it..

like i told ya.. pull the valve cover.. figure out a way to use leverge and a torque wrench to see how many lbs each takes to open the valve.. if all even not the issue.. if one or 2 weak.. id pull cam/lifters and look at the springs.. if they all close to even.. aka reason for torque wrench to measure so you have a value scale to use on the test..

big long bar with fish scale on end to measure weight could work if you got one too.. id say they shoudl all be close to even.. if one feels real weak though.. you know it broke..

[libbydiesel]

A beam style torque wrench on the cam bolt to rotate the cam is an interesting idea.  See where the torque peaks out on each valve opening.