Losing boost at 6400rpm. Help!
- Thread starter suprahero
- Start date
buckshotglass
I love all your sounds.
buckshotglass;1131154 said:
They're variable Dave.
For each psi above the spring they open x amount.
This is how an EBC can make a difference to spool as it holds the gate shut until the set pressure.
buckshotglass
I love all your sounds.
Shut, then when your opening pressure is reached they let the gate open to control boost (shut = uncontrolled boost and it will rise until the engine grenades)buckshotglass;1131160 said:
Normally when you start building boost the gate will creep open bleeding off turbine speed adding to lag.
suprahero;1131161 said:
Should work ok plumbed there J.
(what's inside the TB where that fitting enters?)
buckshotglass
I love all your sounds.
ok. It's late here. I might not understand this until I get mine set up, but you just said shut, and then creep open bleeding upon boost. Is the spring holding long enough?
edit- I know Jdub already questioned the spring a while ago, it just seemed to be the obvious leak.
edit- I know Jdub already questioned the spring a while ago, it just seemed to be the obvious leak.
I'm thinking that since there is no difference between the boost controller hooked up and disconnected that maybe the boost controller isn't working at all. Maybe it's shot it's wad. When the boost controller is hooked up, I still dont' get 17psi until around six grand and I know it used to get 17psi by around 3800rpm. I'm hoping that Brian sends me his HKS boost controller to try out and see if that helps any.
Dave, the bc should hold the gate shut until my desired boost level has been met and then it should open to release the unwanted boost. It doesn't actually keep it completely closed, but it is suppose to keep it from opening completely until it reaches my wanted boost level. I dont' think it is the wastegate because the other wastegate was doing the exact same thing.
Dave, the bc should hold the gate shut until my desired boost level has been met and then it should open to release the unwanted boost. It doesn't actually keep it completely closed, but it is suppose to keep it from opening completely until it reaches my wanted boost level. I dont' think it is the wastegate because the other wastegate was doing the exact same thing.
suprahero;1131294 said:
Fix one thing at a time, leave the boost controler off till you fix the real problem. Once you have a solid 13psi and the slow spool sorted out then look at getting the boost controler on and sorted.
The way the boost is reacting, slow spool, boost spike and then drop off. It keeps leading me back to the turbo, you have eliminated everything else. I mean you have done every check people have sujested and they have all not fixed the problem.
I see that some one posted you drove for an extended pirod with the car runing with a few dead cylenders. If there was still fuel going in the cylenders and not getting burned? The EGT's in the turbo would have been extreamif that was the case and may have damaged it some how. Do you have another turbo you can try and see if that fixes the problem?
I dont have another turbo to try or I would have definately tried it already, but I'm now thinking that it isn't the turbo. When I hook the wastegate lines up backwards, the turbo spools up about 20psi in about one second. I'm now leaning towards the new intake gasket that I have on there. It's a new thicker gasket that is suppose to lower intake temperatures. I'm going to remove my intake manifold again this evening and put some high temp silicone sealant on both sides and then let it sit overnight. This may or may not help, but I'll feel better having done it. IJ has the same gasket, but he installed his with the sealant the first time..........imagine that.
)? like if you use a boost control solenoidI'm using the Stinger standalone and it is capable of controlling boost, but I'll have to read up on how to do that. I'll read the manual later on tonight and see if I have the necessary parts to control the boost through the stinger. Thanks for the suggestion.
Since your boost doesn't work as it should, you know you just have to fill the car up with c16, disconnect the side port of the wastegate and connect the boost source to the top port of the WG and let her rip.:evil2:
suprahero;1131523 said:
LOL thats a very good idea. If its boosting to 20si that fast with no vac line then the turbo is working fine and its a pressure loss or blocked exhaust. You ruled out the exhaust so it must be somthing in the intake leaking.
I thought you did a leak test back when this all started? A leaking manifold gasket would have shown in that right away. Did you already tell us you had this gasket? From working on DSM's I know most of the guys that use the thermal spacers also use a stock intake gasket on each side of it.
I think you may have found your problem. I cant belive somthing like this was missed.
I've got it all reassembled and I'm not going to crank it until tomorrow morning. I figured I would sleep better letting myself believe that this is going to fix it. I also thought I'd let the sealant dry and do what it does.
Justin, that was going to be my next step. Work is definately going to have to pick up because I will be going through tires like crazy..........:burnout:
Justin, that was going to be my next step. Work is definately going to have to pick up because I will be going through tires like crazy..........:burnout:
::shrug::
I'm hoping him not posting is a good thing and that its fixed and he is boosting or in Jail for fixing it and speeding :biglaugh:
I'm hoping him not posting is a good thing and that its fixed and he is boosting or in Jail for fixing it and speeding :biglaugh:
It may be Jail from 100+ in the neighborhood in 3rd gear.
We all have lives away from here that sometimes keep us away for a day or close to it. Hopefully work was busy for him today. The construction business has been slow lately.
Please Jay, come post something worth boobies. Oh, and once you get here go check out the new member of the Jay Blue group. I think you will approve.
We all have lives away from here that sometimes keep us away for a day or close to it. Hopefully work was busy for him today. The construction business has been slow lately.
Please Jay, come post something worth boobies. Oh, and once you get here go check out the new member of the Jay Blue group. I think you will approve.