Refresh951's Hybrid Ultra Stroker Build
06-21-2013 | 02:00 AM
#662
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Joined: Jun 2010
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From: Marietta, Georgia
Yes, just talked to Josh and he gave me your thoughts. Thanks! Really appreciate the input! Putting together a pretty solid plan for moving forward.
06-21-2013 | 02:02 AM
#663
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From: Marietta, Georgia
Nice!
You'll need time to adjust your EBC. The only reason i'd go EBC is having 2 or more boost modes. High and low. or in my case, 6.. ~12psi, ~15psi, ~16psi, ~16.8psi ~17.3psi ~18psi (pretty much the last 5 are because of weather. If it's very cold, it'll boost higher so if i want 18 psi i'll need to go to the 16.8 or 17.3 psi group. Because mine is closed loop. Open loop you can set a target boost pressure and it'll hit that 99% of the time.
What i did was set it to a very low boost level and make sure it's a flat curve, you can adjust the sensitivity until it's flat. then you bump it up to increase the boost & if that's flat also, just bump it up untill you've got your target boost pressure.
You'll need time to adjust your EBC. The only reason i'd go EBC is having 2 or more boost modes. High and low. or in my case, 6.. ~12psi, ~15psi, ~16psi, ~16.8psi ~17.3psi ~18psi (pretty much the last 5 are because of weather. If it's very cold, it'll boost higher so if i want 18 psi i'll need to go to the 16.8 or 17.3 psi group. Because mine is closed loop. Open loop you can set a target boost pressure and it'll hit that 99% of the time.
What i did was set it to a very low boost level and make sure it's a flat curve, you can adjust the sensitivity until it's flat. then you bump it up to increase the boost & if that's flat also, just bump it up untill you've got your target boost pressure.
06-21-2013 | 02:09 AM
#665
Race Car
Joined: Mar 2012
Posts: 3,602
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From: Austin TX, drinking beer in the garage
Is Josh planning something like that, maybe a system that uses the DME and the CV to control boost? Awesome numbers by the way, congrats on getting to at least view the cake if not getting to eat it, so to speak. I'm sure you'll hit your goal with a bit more tuning and a solid run. This is one of the coolest motors on the board.
06-21-2013 | 02:14 AM
#667
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From: Denver
06-21-2013 | 02:16 AM
#668
Race Car
Joined: Mar 2012
Posts: 3,602
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From: Austin TX, drinking beer in the garage
I dont think there is another car community with members that put so much of their own personal time and resources into developing custom solutions and keeping the cars paced with the march of time. Its pretty special here.
06-21-2013 | 02:40 AM
#669
Three Wheelin'
Joined: Jul 2011
Posts: 1,796
Likes: 4
From: Hollandaaaa
And the best thing is that the people who are doing it are from around the world! Holland, Sweden, Germany USA, Australia!
And than; DAMN! These power levels and only that amount of money spend.. I wonder what will happen to the other engines being build at the moment..
And than; DAMN! These power levels and only that amount of money spend.. I wonder what will happen to the other engines being build at the moment..
06-21-2013 | 02:49 AM
#670
Race Car
Joined: Mar 2002
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Nice number Shawn, congrats.
Re your problem with setting up the EBC, how stiff is the wastegate spring you are using?
I noticed that running open loop went well with a stiff spring, but closed loop worked much better with a softer spring, as when you get near the boost target the solenoid may have less work to supply in order to modulate the movement of the valve from both sides of the diaphragm. PWM settings will be easier to figure out.
Re your problem with setting up the EBC, how stiff is the wastegate spring you are using?
I noticed that running open loop went well with a stiff spring, but closed loop worked much better with a softer spring, as when you get near the boost target the solenoid may have less work to supply in order to modulate the movement of the valve from both sides of the diaphragm. PWM settings will be easier to figure out.
06-21-2013 | 06:31 PM
#672
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Joined: Jun 2010
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From: Marietta, Georgia
Thanks Tom! A lot more work to do but encouraging none the less.
Thanks Doug. Great analogy.
Appreciate the encouragement and input.
There are some pretty amazing forum's, DSMtuners for one, but I agree this is a great place to learn. I appreciate the knowledge and friendships I have found here. 
Trying to achieve reliable big power for less than 1/3 the typical price. Hybrid Strokers FTW!
Thanks Thom! WG spring is 1.1 bar. By the time I hit 2-3 psi I am in open loop. I added an additional spring to the Tial 38 a while back. It has two springs now and I can remove the secondary if desired to make it a 0.9 bar.
Appreciate the encouragement and input.
And the best thing is that the people who are doing it are from around the world! Holland, Sweden, Germany USA, Australia!
And than; DAMN! These power levels and only that amount of money spend.. I wonder what will happen to the other engines being build at the moment..
And than; DAMN! These power levels and only that amount of money spend.. I wonder what will happen to the other engines being build at the moment..
Nice number Shawn, congrats.
Re your problem with setting up the EBC, how stiff is the wastegate spring you are using?
I noticed that running open loop went well with a stiff spring, but closed loop worked much better with a softer spring, as when you get near the boost target the solenoid may have less work to supply in order to modulate the movement of the valve from both sides of the diaphragm. PWM settings will be easier to figure out.
Re your problem with setting up the EBC, how stiff is the wastegate spring you are using?
I noticed that running open loop went well with a stiff spring, but closed loop worked much better with a softer spring, as when you get near the boost target the solenoid may have less work to supply in order to modulate the movement of the valve from both sides of the diaphragm. PWM settings will be easier to figure out.
06-22-2013 | 12:20 AM
#674
Drifting
Joined: Aug 2009
Posts: 2,239
Likes: 2
From: Bangkok, Thailand, Milpitas, CA & Weeki Wachee, FL
Incredible work Shawn! People must also note the quickness in which this build took place. Most people don't realize the time it takes to accomplish results like this. Very impressive!
06-22-2013 | 12:46 AM
#675
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Joined: Jun 2010
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From: Marietta, Georgia
Thanks Eric. The beauty of off the shelf Chevy/Mitsu parts. As a result, these builds can occur much quicker.