New DP, low boost

[Shimy87]

I will do that tomorrow when I grind the flange.....tha nks

[Shimy87]

puck swing freely now, did before but not even close now. Attached new pics with anti sieze. It appears the puck is very slightly concave and contacts around the outside but not a flush contact. checked with straight edge and its hard to see anything but the antiseize shows it. anyway, it does contact all the way around and it is a very very thin layer on there. Should this be working correctly or is that concave puck the issue. If so how the hell do you remove that puck, I have a buddy with a machine shop that could surface grind it perfectly flat. I just cant believe that this is to "out of spec" to work properly but I obviously have some issue.

[motorhead]

Use a sharpening stone and lap it true.  You only need about 60% of the puck's surface area to seal against the housing.

[Steve Wood]

I would not think that's the problem.  As you tied the puck shut,  I don't think it's a weak actuator spring.  Otherwise I would tell you to verify the number on the actuator is correct for an HD

[Steve Wood]

What are your O2's reading at part throttle 0-4 psi of boost before the alky starts spraying?  Again in third gear up close to 70 mph or so?

[Shimy87]

spent a few hours trueing up the puck and checking, I get a good 1/4 seal all around so that's not the problem any more....took out and same dam thing 19 lbs boost. actuator rod set to 3/16 and then maxed out rjc controller and got 20 lbs with O2 in the 825 area. Tried the low boost pull and between 5-10 lbs its O2s were 815-820. Getting so frustrated that I'm tempted to put stock dp back on and see what happens. Still no call back from Julio but I did also turn up the turn on point and lower the initial...VERY slightly and if I jump on it in 3rd when boost shoots up to 20 I get a small knock blip to about 2 so I don't think messing with alky settings will be wise.

Im out of ideas and this bitch is beating me down   

[nocooler]

Have you checked the intake side for leaks?

[gusszgs]

Maybe I missed it, have you tried it without the boost controller? Just hooked up stock or tuner style?

[Shimy87]

Yea tried that....descid ed to put stock dp back on and see what happens.....ou t of ideas

[motorhead]

Helper spring on the WG?

[Steve Wood]

Helper spring on the WG?

He wired it shut and did not get more boost...so a helper spring probably won't help....

[Steve Wood]

Shimy, this thread has been of great interest to me. A couple of months ago, I had someone asking me for help and eventually he put an alky kit on it and the car was too rich.  I never got anywhere trying to help him because he could not follow instructions and never would do all of what I asked him to try.  I think he could make boost, but he kept setting the boost to 18 psi instead of increasing it to see if the car would lean down with boost. 

then, you came along and could not make the boost it should...you had the alky kit and a new dp.

Two weeks ago, I finally got around to installing the alky control kit to replace the old SMC kit that died a couple of years ago and which I had rigged with various pumps, etc.  I also installed a new boost controller.  I did not have much time to play with it but when I did the other day, it was showing O2s ranging from 860-900 and would only pull 22# of boost.  Shades of Shimy!  LOL

I was convinced it was the alky kit but I turned it down a bit yesterday and it was still running 850-860 and pumping black smoke with no improvement in the boost.

I played with it a bit yesterday and started playing with the fueling in the chip yesterday and this morning and got it down to about 830.  I noticed that it was running well in the 800's before the alky came on at light throttle so I have begun to look at the chip settings.  This is an SD chip with a million settings so it is not simple to just pull fuel out without some careful consideration.  I don't have a wb on the car and don't think it would help.  I am running open loop.  I don't recall ever having much problem setting it up or it being so rich. 

Fuel pressure seems to be working properly but I am going to put a different gauge on it because it seems to be rich all the way from beginning to end.  I put the old controller on it and that did not help the boost come up.  My computations say that another 3psi of boost might bring the O2s into line...but, computations only count when they work.

I will try to find my other gauge tomorrow and I am going to wire the puck shut. 

so don't get discouraged, it happens to all of us...at least to those of us that are honest!  lololol

I think everybody knows but the parts # for the hd actuator should be 1011-144

[Steve Wood]

spent a few hours trueing up the puck and checking, I get a good 1/4 seal all around so that's not the problem any more....took out and same dam thing 19 lbs boost. actuator rod set to 3/16 and then maxed out rjc controller and got 20 lbs with O2 in the 825 area. Tried the low boost pull and between 5-10 lbs its O2s were 815-820. Getting so frustrated that I'm tempted to put stock dp back on and see what happens. Still no call back from Julio but I did also turn up the turn on point and lower the initial...VERY slightly and if I jump on it in 3rd when boost shoots up to 20 I get a small knock blip to about 2 so I don't think messing with alky settings will be wise.

Im out of ideas and this bitch is beating me down   

Reduce parameter 1 by about 4 numbers at a time until the third gear o2s get down to about 800.  Don't know what effect this will have on the boost but it should run better

[1 RARE T]

Crank the waste-gate tighter.


Being a little rich is'nt killing the ability to make boost.

[Steve Wood]

Crank the waste-gate tighter.


Being a little rich is'nt killing the ability to make boost.

Would you explain to us how cranking it tighter will make more boost when wiring it closed will not?