parallel turbos

1mouse3

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I started ploting one the down pipes...


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This is the only place I see as a valid place for this wastgate and might rise it slightly. Any further back it will start a fight with the hvac box and side front the shock tower.

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I would like to use this bellow so dont get cracking but there is no direct room. Could run a second pipe down with the primary but could cause other clearence issues. Where I have the primary mocked up, it should clear the tire and fall below the cab. So dont to be moving the primary around to get a second to run down to a point so to join past the primary bellow.

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1mouse3

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Made a stub pipe to stand the gate up some and a rough ground branch to the down pipe.

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Some though about this location was weighed and this is what I came up with. The gate cant point up stream like was layed out, would give a path of back flow into the gate. So this is about where I could put it without maing it too difficult to weld. Final grind of it will be made when the stub and v-band of the turbo is welded.

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CBRF3

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Made a stub pipe to stand the gate up some and a rough ground branch to the down pipe.

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Some though about this location was weighed and this is what I came up with. The gate cant point up stream like was layed out, would give a path of back flow into the gate. So this is about where I could put it without maing it too difficult to weld. Final grind of it will be made when the stub and v-band of the turbo is welded.

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looking good it looks to be coming along as i said be carefull I think these are going to come on hot aka hard to control the boost will be nothing nothing holy crap we got more boost than can handle kind of situation. I think waste gates are going to struggle to control it especially when they gate open down low in RPM's the fuel is still ramping up ( ours ramp hard down low with fuel system we have ) increasing EGT's / turbine drive pressures massivelly and super quickly often overwhelming wastegates. This has been my experience we are talking all good here then out of nowhere bam it gives all the beans and according to the math this will be just a bit off idle where the turbos start ramping up so PLZ be carefull as we talked about before our motors are slobbery and lag for a few seconds then they get theyre dynamic compression suddenly goes up to burn the fuel and well suddenly they start running like a scalded dog and its worst down low in RPM with this kind of turbo setup hince why I target a bit higher in RPM's for boost to really roll in theyre so hard to control boost down low on our motors its just the nature of the beast with ours. The point is our motors go from minimal turbine drive pressure to full drive in just a very short window so twin small turbos are going to peak down low and essentially go full boost in microseconds this is why many that have tried this have literally sheared crank shafts off at the flywheel because the torgue spike is so aggressive we are talking literally double the torgue down low vs normal driving RPM's.
 
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1mouse3

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looking good it looks to be coming along as i said be carefull I think these are going to come on hot aka hard to control the boost will be nothing nothing holy crap we got more boost than can handle kind of situation. I think waste gates are going to struggle to control it especially when they gate open down low in RPM's the fuel is still ramping up ( ours ramp hard down low with fuel system we have ) increasing EGT's / turbine drive pressures massivelly and super quickly often overwhelming wastegates. This has been my experience we are talking all good here then out of nowhere bam it gives all the beans and according to the math this will be just a bit off idle where the turbos start ramping up so PLZ be carefull as we talked about before our motors are slobbery and lag for a few seconds then they get theyre dynamic compression suddenly goes up to burn the fuel and well suddenly they start running like a scalded dog and its worst down low in RPM with this kind of turbo setup hince why I target a bit higher in RPM's for boost to really roll in theyre so hard to control boost down low on our motors its just the nature of the beast with ours. The point is our motors go from minimal turbine drive pressure to full drive in just a very short window so twin small turbos are going to peak down low and essentially go full boost in microseconds this is why many that have tried this have literally sheared crank shafts off at the flywheel because the torgue spike is so aggressive we are talking literally double the torgue down low vs normal driving RPM's.


I understand that I need to be careful with this beast, especial since dont have the psd rod in this block. Im doing what some say cant be done, in turn not much documentation on traveling this path. Im more worried about these turbos giving 20+ psi too low in the rpm where could bend these na rods, thinking of it like a shot nitrous. There was that person I mentioned that kept braking flex plates with twin T04E, @IDIoit seems to have had batter luck with a differnet version. These hx35's with 10cm turbines should light off latter than both those but yes this is still asking for the boost early. If its giving too much boost too soon, I will get a different size turbing housing for them. The 10cm would be close to a .63, option for change would be a .70 or .82 single scroll. Will see what data I get off runing this beast and make change if needed.
 

1mouse3

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Day startted by going back to the stealer ship to return bearings that where sold at outrageous cost and get a kit instead. I got them to eat restocking fee for doing this on a special order.

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In the end its a fail, this kit has same bearing as the last. It is .01 smaller than the one that was pulled out. This hx35 is 3538868 and the number on the Bearing housing is 3530521, Im running out of options and dose not make sense.

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They need a matching compressor housing, so got a nos one like came on the hx35.

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The issue is with the he300, its cut for a hair bigger inducer and a bit bigger exducer. The hx35 housings are almost a perfect match for the wheels I have, there is a slight drag at the inside point of the exducer. May be hand sand them to fix that.

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So on to ploting the other down pipe, this one is going to need a bunch of special shapes made. The turbo sits square over the steering shaft, so needs to point up and out. So hacked up a 90 to get the needed shape and past this will be decided on with the engine in the truck. I could try a mock up on the 6.9 in the truck, but bees and weeds are taking over. It needs moved and a eviction notice serve to those taking over.

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Now to plot the gate and think this is where Im going to put it

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Nero

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I stand by it... You're insane. I love it. Can't wait to see it running.
 

IDIoit

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man, im boosting 25 psi on a factory cal IP, and i cant get this thing to pop.
stock N/A block on headbolts.
i actually deleted the wastegates. havnt had any issues
 

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1mouse3

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man, im boosting 25 psi on a factory cal IP, and i cant get this thing to pop.
stock N/A block on headbolts.
i actually deleted the wastegates. havnt had any issues

Thanks, that make feel a bit better about it and will pack up the wastgates. Im going to run the 6.9 IP on this and hold on to 7.3 IP for core on a 110cc for a latter date on the other block when ever it gets done. You do anything to get more fuel out that IP past the fuel screew?
 

IDIoit

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Thanks, that make feel a bit better about it and will pack up the wastgates. Im going to run the 6.9 IP on this and hold on to 7.3 IP for core on a 110cc for a latter date on the other block when ever it gets done. You do anything to get more fuel out that IP past the fuel screew?
yea, i ordered a 150 cc pump from justin, just hasnt came yet
 

1mouse3

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Since the thought of wastegates have been canceled, I can find closer to this subject.


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1mouse3

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The guy with the magic wand went about futher stitching together my lego pieces.

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And got a set of ghost down pipes.

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1mouse3

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Then started investigating if this boat will float.


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Also cleaned the ports on this one, unsure on how Im going to get the slag out.

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1mouse3

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I further cleaned up this manifold and looks to have no points that will leak, there is a bunch of boogers that need cleaned out tho.


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1mouse3

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I tried to call a pumber to get the boogers out, but the snake wanted to bite back. It did nothing more than make it shinny anyways, so a chisel and hammer to get that majority out.


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Also cleaned up the second and see reason to send back to the welder for touch up.

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1mouse3

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Called some holset distributors and found out oversize journal bearings exist, so a melett distributor to get one.

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So the hx35 is now assembled and painted, just hope I did not over touqe the wheel. Yes the braker triped and there is no more light after running the heat gun.

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