Recent Posts

1
v1.0 - v1.1 / Re: My life, My coding
« Last post by Rx7man on September 22, 2020, 08:22:47 AM »
I think I'm going to build this onto a 24V engine.. I just picked up some stainless Shied .120 24V p pump lines... they ought to do the trick
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v1.0 - v1.1 / Re: My life, My coding
« Last post by hakcenter on September 19, 2020, 09:16:47 AM »
I've been wanting a bridgeport for a very long time :(
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v1.0 - v1.1 / Re: My life, My coding
« Last post by Rx7man on September 16, 2020, 01:52:06 PM »
Got another new toy I've been waiting to find for a long time.. This is going to open up lots of options!
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v1.0 - v1.1 / Re: My life, My coding
« Last post by Rx7man on September 02, 2020, 09:29:22 AM »
So I've driven the first gen a bit with the HE351CW... it's an AWESOME turbo.. spools nearly instantly, pushes 45PSI, and I'm getting considerably better fuel mileage than I was getting with the 60/64/12 HX35/40 hybrid..  I used the same billet compressor wheel in both, so it all comes down to the exhaust side
Buddy tried the 9cm from an HY35 which looks really similar, but it's not sounding like that's performing all that great, would be good for a truck with closer to stock fuel though.

Here's a little vid for the sound.. sure responsive
https://photos.app.goo.gl/AhbkEja2JRXaFgG9A
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v1.0 - v1.1 / Re: My life, My coding
« Last post by hakcenter on August 08, 2020, 02:29:14 PM »
You'd be the guy to do the H1000  8)
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v1.0 - v1.1 / Re: My life, My coding
« Last post by Rx7man on August 05, 2020, 10:30:12 AM »
Well, I can't remember if I've mentioned it before.. THe Bosch H1000 pump.. with electronic fuel and timing racks... one just came up for sale.. rare as hens teeth.. I'm sooooo tempted!

Just put an 60/67mm HE351CW on my first gen, going to try it out today... see how it does.. seems to spool real fast!
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General Discussion / Re: HE351VE on 1987 BMW (gas) - inspired by lilbb!
« Last post by Rx7man on June 08, 2020, 09:24:27 AM »
I let mine use the whole range, even though it may not be doing very much opening wider than 140.. It may also depend on the size of turbine you have, perhaps on a 60mm, the turbine exducer becomes the flow limiting factor, but if you go to a 67mm, that's no longer the case?
I showed my buddy your video, he is a beamer fan too (until I convinced him to get a dodge/cummins)

one reason I let mine use the whole range is to keep the vane sliders clean and not let too much soot build up on them, on a gasser it's probably not as important though
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General Discussion / Re: HE351VE on 1987 BMW (gas) - inspired by lilbb!
« Last post by mantonakakis on June 03, 2020, 12:18:54 PM »
correct, the feedback is essentially how hard and in which direction the motor is working, temp is usually pretty close to your coolant temp if you have that plumbed up
Cool, got that working now, I was curious if there was any big error between command and actual - at least driving around a bit yesterday, they follow pretty tightly. Both are getting logged to the Megasquirt now (previously I was only logging the position command I sent, but now I'm logging the received command position as reported by the turbo, as well as the actual position).

One other question - in some other forum thread circa 2014, someone was posting that a command position of 140 or so was the actual usable most-open position, even though the vanes will still move down to about 50 or 60 (which is where I have my limit set now). Any advice on whether it's worth changing that max limit to 140?
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General Discussion / Re: HE351VE on 1987 BMW (gas) - inspired by lilbb!
« Last post by Rx7man on June 03, 2020, 12:56:43 AM »
correct, the feedback is essentially how hard and in which direction the motor is working, temp is usually pretty close to your coolant temp if you have that plumbed up
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General Discussion / Re: HE351VE on 1987 BMW (gas) - inspired by lilbb!
« Last post by mantonakakis on June 02, 2020, 09:57:09 AM »
Okay, did my first test last night with the compressed air. Wastegate is staying shut now, when my MAP gets within 10kPa of my boost target I vent the solenoid, otherwise it's pressurizing the wastegate dome to ~35psi. One weird thing I noticed is significantly lower wheel speed - I'll have to do a back-to-back test to compare for sure, but usually I'm at 80k-90k once I'm spooled and around 180kPa MAP. After the wastegate change I'm seeing more like 65k-75k with all else mostly equal except altitude - my last testing at the current boost level was 85kPa ambient pressure, last night was 80kPa; pressure ratio was higher last night, but turbo speed decreased???

EDIT: Must have been a fluke, maybe bad data or something? I just went for a quick test drive and the speeds are back to normal, mid 80k's.

In any case, I want to try an capture and maybe log the messages broadcast by the turbo - I see in the lilbb code there is command and actual position (makes sense), but also feedback and temp? Is that the controller's closed loop feedback and the actuator temperature?