Ok,
This is out there, but I was thinking about turbos last night (needed something else to think about besides the upcoming wedding....TWO WEEKS)and I keep falling back to the VNT units and the possibilities, obstacles and setups that exist out there right now for mechanical control...or use of the stock VNT unit on the mTDI setups....
So...what we have thus far is...
1. There is an elusive mechanical control diaphrapm out there from older VNT setups...I have yet to had luck finding one...not to mention, would it work with our nicely sized VNT 22, 25, etc. that I'd be looking at for my setup?
2. We have the flipped acutator mechanism that Jake did on his dad's TD IDI 1.6 for mechanical control over the VNT 15 that was installed on his dads car. It worked, but did have some issues with its operation right? Wasn't "linear" or "constant" sometimes in how it pulled the vanes, etc.
3. We have Martins very nicely setup linkage for his VNT20...looks to work very SLICK! However, when a larger intake manifold is involved...it makes such a setup hard to work with and such...
Did I miss anything?
So...what was I thinking about last night? Well... came home for the weekend to spend with my family and we were out to dinner. My dad has a few Fords around here..namely a Taurus and a Crown Victoria and we were crusing to dinner last night and I got to thinking about the cruise control setup on the Fords (and many cars for that matter) and how you can "accel" at the push of a button, de accel, etc. all based on a vac. operated system. (got to thinking about the cruise setup in my b3 variatn from there with its vac. acutators, pedal diaphrapm linkage, etc.) Also, most cruise control setups operate on a seperate control module to...so, with some independence from the ECU.
I haven't thought about it much beyond that at this point, but I was thinkin about whether a cruise control setup couldn't be modified for use in controlling the VNT turbo designs on our mTDI setups. I was going to play with the idea some more...but don't know...just a random thought.
Throwing it out there...not much behind it yet though...
Joe