has anyone seen a compound turbo set up in the dunes?

this is my Special SU car that was built 15+ years ago. it was the only car i didn't win the EPO with. i have had a 3.0 liter Subaru in it at 28psi and 900 HP but it was when i first started playing with the flat six and it didn't last long. Shortly after i bought my first Funco and this has been sitting ever since. it was in the SSSS once. it's about time i resurrect this beast. it has +6" rear arms, the front arms were the first time the "outback arms" arms were made Larry actually called them the Outback arms, they were 2" wider, brand new S4D. might have to start a new build thread.......
it has been collecting dust and it's been a "storage facility" for the longest time. you couldnt even see this car from all the crap i had on it through the years--cleaning up this area of my shop right nowIMG_8645.JPGIMG_8646.JPGIMG_8647.JPG
 
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this is my Special SU car that was built 15+ years ago. it was the only car i didn't win the EPO with. i have had a 3.0 liter Subaru in it at 28psi and 900 HP but it was when i first started playing with the flat six and it didn't last long. Shortly after i bought my first Funco and this has been sitting ever since. it was in the SSSS once. its about time i resurrect this beast. it has +6" rear arms, the front arms were the first time the "outback arms" arms were made Larry actually called them the Outback arms, they were 2" wider, brand new S4D. might have to start a new build thread.......
Is this the one you were playing with the GTR engine forever ago?
 
this is my Special SU car that was built 15+ years ago. it was the only car i didn't win the EPO with. i have had a 3.0 liter Subaru in it at 28psi and 900 HP but it was when i first started playing with the flat six and it didn't last long. Shortly after i bought my first Funco and this has been sitting ever since. it was in the SSSS once. its about time i resurrect this beast. it has +6" rear arms, the front arms were the first time the "outback arms" arms were made Larry actually called them the Outback arms, they were 2" wider, brand new S4D. might have to start a new build thread.......
This is one of my favorite cars of all time. Please, please get this thing back in the sand!
 
Sick. All teh STU STU STU STUs

But I don't think that's a good dune setup :)
I wasn't expecting an exact replica build for John... lol. I was piggy backing off of your Supra comment and without any mention whatsoever was suggesting it does work, if done right... and obviously on a smaller scale. As mentioned previously, someone on here has done it... I do remember that.
 
Is this the one you were playing with the GTR engine forever ago?
yes. life just got in the way, business was busy, I had my Funco working all the time, but now im, down sizing. Closed down my Car repair shop. still have Outfront building engines. i see some daylight in my life so its time. ecus are more advanced now and i have always dreamed of having and air shifted car.
because i can now wire the car with twin DBW throttle bodies it would be a possibility to literally have a small electric shifter. i just don't know how much a tank of Co2 would last during normal driving
 
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Nissan GTR twin turbo V6 VR38TT. This motor is rated stock HP at 545. these motors can make 1000 hp in stock form. With mild upgrades are in the 12-1500 hp range. T1 even makes a 4.1 liter stroker motor, billet block (costing $70k) and is in every fastest R35 car in the world
Reach out to Dave McDowell...If i'm not mistaken, I think he has or had a twin turbo GTR in an Alumicraft. He may have some insights. I just don't think his was a compound setup though.
 
Saw a few compound set ups on 4G63's back when i was heavily into the Evo/DSM racing. seemed to work pretty well!
Same here. My brother was involved with DSM crap from about 1995 - 2002 and I saw a lot of off the wall stuff he was looking into. Greengo was part of his DSM crew but only had his toes in that pool, my brother being the most invested. I have about 5 blown transfer cases from GSX's in my Mom's garage that I have to toss out this weekend.
 
yes. life just got in the way, business was busy, I had my Funco working all the time, but now im, down sizing. Closed down my Car repair shop. still have Outfront building engines. i see some daylight in my life so its time. ecus are more advanced now and i have always dreamed of having and air shifted car.
because i can now wire the car with twin DBW throttle bodies it would be a possibility to literally have a small electric shifter. i just don't know how much a tank of Co2 would last during normal driving
You already have onboard air with the Funco, why not run it off the air tank?
 
I wasn't expecting an exact replica build for John... lol. I was piggy backing off of your Supra comment and without any mention whatsoever was suggesting it does work, if done right... and obviously on a smaller scale. As mentioned previously, someone on here has done it... I do remember that.
I was talking about the plumbing and complexity. Lots of bouncing around in the dunes, buggies aren't super large, and weight is a killer. :)
 
You already have onboard air with the Funco, why not run it off the air tank?
it needs a lot more pressure than the air tanks, and it's a lot more involved in that the shifter would change, probably redundant paddle shifter on steering wheel and most importantly the air shifting would require consistent DBW operation which my funco only has drive by cable throttle. With my current 2023 KTM 1290 super duke the "quick shifter" is absolutely flawless. up shifts, down shifts, part throttle or full throttle. just a realization of what could be
 
Turbo assembly for the diesel I’m putting into my bronco, it’s a little 3 liter Inline 6 (bmw m57n2). Always thought it’s be cool to throw these turbos on a gas motor. The small turbo is TINY
IMG_5455.jpeg
 
Excited to see that thing back in the light! I remember you talking about plans for that car, I cant even remember what they were it was so long ago and I didnt know much then.
That would be a wild ride for sure.

I know "no lift shift" has been hot topic this past year. Justin at SCU was talking about it for his new car, @SeanRitchie I believe talked a bit about it as well not all that long ago. perhaps there's some newer tech/stuff out that would be a good solution instead of air shift. If your still planning on duning the car vs just show boating at the drags, I think that might be the bigger factor on options....
 
it needs a lot more pressure than the air tanks, and it's a lot more involved in that the shifter would change, probably redundant paddle shifter on steering wheel and most importantly the air shifting would require consistent DBW operation which my funco only has drive by cable throttle. With my current 2023 KTM 1290 super duke the "quick shifter" is absolutely flawless. up shifts, down shifts, part throttle or full throttle. just a realization of what could be
I thought most of the air shift solenoids were in the 100psi range? Most onboard air setups should support that, and any of the kits I've seen road racing had that for air pressure supply.

You can also cut spark during shifts. Seems fawking with throttle opening on shifts would result in loss of boost pressure, no?
 
Maybe I'll talk to Dave and see if he wants me to do a paddle shifter article for the home page. I just haven't had any time to spend on other things while I've been getting my shop up and running and transmissions out the door this past few weeks.

I know the "hardware" side of paddle shifting pretty well, and what to program into the ECU to make it work. The hardware is the easy part other than opening your wallet. It's the programing that requires knowledge and understanding of how to make it work. I had a rather lengthy discussion with a set of race engineers from a top level factory road race team about why their programming destroyed an Albins gearbox in a vehicle they tuned.
 
This will require a DBW throttle body for proper operation. There are some guys that have fitted electric actuators to cable operated throttle bodies for blipping on a downshift, but they have never been able to get them to work as well.

Also, I've dealt with a Pikes Peak racer that had issues with no upshifting when running his turbo LS hard. Turns out, the blow off valves weren't opening fast enough when the ignition was cut, so the turbos were still pressurizing the intake and pumping air through the motor, which was not allowing the input shaft to slack up and let the dogs unload so it could pull out of gear and shift into the next.
 
Turbo assembly for the diesel I’m putting into my bronco, it’s a little 3 liter Inline 6 (bmw m57n2). Always thought it’s be cool to throw these turbos on a gas motor. The small turbo is TINY
View attachment 142965
Damn, only Ze Germans can come up with a Rube Goldberg Machine like this... LOL.



1745353720728.png

I assume there's a diverter valve to bypass the small turbo's intake tract once certain boost levels are met...? If not, reminds me of:

1745353852137.png

:ROFLMAO:

Pretty cool if it works, since this appears to be a true switch from one turbo to another, exhaust path wise.
 
This will require a DBW throttle body for proper operation. There are some guys that have fitted electric actuators to cable operated throttle bodies for blipping on a downshift, but they have never been able to get them to work as well.

Also, I've dealt with a Pikes Peak racer that had issues with no upshifting when running his turbo LS hard. Turns out, the blow off valves weren't opening fast enough when the ignition was cut, so the turbos were still pressurizing the intake and pumping air through the motor, which was not allowing the input shaft to slack up and let the dogs unload so it could pull out of gear and shift into the next.
Derp, yeah. Downshifts are the harder part if you want all of that to be automated. Might be easier to just airshift on upshifts?
 
cant believe all these parts were brand new and now look at them! DBW throttles can move about three times faster than your foot can so doing ignition cut and throttle cut to execute the shift. the throttle doesnt need to be 100% closed but maybe a 50-70% closed and only for a super small amount (quicker than you could ever do with your foot)
 

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