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#751
March 19th 2011, 06:31
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...that was a close call!
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#752
March 19th 2011, 13:14
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That could have ended very badly! Hopefully you can get that turned around and get it running again soon.
__________________
Lucy: 73 super beetle sport bug edition, 944 turbo suspension, 930 turbo brakes, 2165 FI, dry sump, turbo
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#753
March 19th 2011, 16:25
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Yeah, did my best today to get it running next weekend. Used a ticker plate and had the divider wall protrude through the tube so I could weld it all the way through. Its 5 times stronger now 4sure and had now room to port the transitions inside the wastegate tubes a little as well
  
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#754
March 19th 2011, 17:24
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Is there any reason to go with an external wastegate vs. an internal(turbo housing)? I'm trying to keep it simple, and I can't for the life of me figure out out if the external is necessary for my project.
Jason
__________________
If I could just get paid for my sleepless nights.... 1960 VW Bug UBRDUB Walkaround 1st Drag Run Dyno Run Oval Ragster-'57 Rag/'04 Boxster S
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#755
March 19th 2011, 18:04
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Quote:
There is also the better boost control if you have a relatively large turbo and run low-ish boost. Internal gates can be somewhat small-ish and boost creep can happen then. External gate usually flow more and don;t experience boost creep. Thirdly you can rotate the turbine housing more freely (in all positions, 'clocking' the turbo) if you don't have the arm of the internal gate to consider, which is usually attached to the compressor housing. That makes it easier to position the turbo any way you like wrt inlet and outlet openings 
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#756
March 28th 2011, 15:34
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This sunday I participated in the "Automaxx Streetpower Toyo Tires shoot-out" pfft what a name...
but it was good fun, lovely weather and good practice to get some seat time in this 1/8th mile event. 100 mile drive one way. All went well besides terrible traction and one side of the linkage that fell off (twice...) in 2 of the 6 runs I could do. I'll deff weld the arm to the shaft now! :twisted: First run on a cold track, cold tires and too much boost: http://www.youtube.com/watch?v=jkntN1YTjcI 
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#758
March 28th 2011, 16:16
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Can't keep a good man down for long. Good to see it back in action.
__________________
NO_H2O 72 1302 Smack Black GL 73 Bus (2L CIS Powered) 66 Beetle, 73 Standard Beetle 72 Pinzgauer 710M Volksport Kafer Gruppe
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#760
March 29th 2011, 09:52
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Sounds great Wally! You can really hear the spool up - very cool!
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#763
April 9th 2011, 13:10
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tnx Steve! Here's another run I found from that day:
http://www.youtube.com/watch?v=8MF7GaaDzVA Did a new dynorun today with same sort of problem as before: running lean up top... Its not too small injectors, but since I can log fuel pressure as of yesterday, it showed that FP gradually deminished from 3,5 bar to 2,5 bar at 1,3 bar of boost. Even though I have a boost referenced fuel pressure regulator! Lambda was approaching 1.0 again...and misfires occured. I even changed the fuel filter on the dyno and gave a bit more max fuel correction (30 instead of max 20% before). Even though the run didn't misfire this time, it still ran lean (lambda 0.95+ but just rich enough not to misfire and the run ended in 418 hp up top (max rpm 7200). Atm, I think its too small a wire I used for both fuel pumps. This was at 1,3 bar. I never got to my intended 1,6 bar... 
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#764
April 9th 2011, 16:16
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  Now get that fuel problem fixed and make a 450 run
__________________
If some is good and more is better, then too much should be just about right!
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