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About s40rch

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  • Model of Volvo
    V70 (Estate P1)
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  1. No I don't get overshoot running the standard actuator, if I bang my foot down it will go straight to the desired boost every time, maybe a bit less in 1st and 2nd gear. Did you run the forge actuator on the C70 too? I'm not sure what you mean about the 0.5bar and 1bar part throttle bits? Do you mean it's consistent or it's hard to maintain 1 bar? BTW, when I say 2% the scale for throttle only goes 0-70% so more like 5% difference can have a huge fluctuation.
  2. The way I look at it (just an assumption) is that boost is mostly uncontrollable below the spring pressure, so if you have a stupid red 1.4 bar spring then the TCV/engine management cannot control the boost below 1.4bar as the actuator will not fully open the waste gate below 1.4bar as it is mechanically limited by the characteristics of the spring. That is assuming if the cracking pressure is high, do you know what pressure the actuator starts to move/fully open? I believe with a standard actuator it starts to move at about 0.15 bar and is fully open by 0.6 bar. Although the cracking pressure is low, the actuator seems to be strong enough when we need to keep the wastegate closed. We still seem to have very stable boost control (no overshoots or need to run an MBC) and able to hold a solid 1.4 or 1.7 bar of boost if desired. At about 6k it tals off to about 1.1 bar but I believe this is down to the engine consuming the air rather than the waste gate being forced open. (this is what Tim tells me) If you want the turbo to spool just as quick with a standard actuator or weaker spring then you need to run 100% TCV duty cycle at lower pedal inputs until you reach the desired boost pressure. Usually you would run a very low TCV duty cycle at part throttle inputs so that the pedal is less savage, mine needs a tweak as it is very lazy feeling. I think you need to drive mine to compare the difference, it certainly has more derivability at lower throttle inputs. I wonder if your actuator with a 0.7 bar spring will be as strong and controllable as the standard actuator.
  3. I assume you are on part throttle... so the throttle plate angle will be restricting the air flow. Fine adjustments cause huge differences in boost pressure... 2% throttle input difference can be a difference of 0.5 of a bar
  4. He was at the ring in Septmber, had a chat with him, it was a track day using full slicks! Think he's on the dutch forums
  5. I think most of you have probably seen my lap I uploaded on Facebook, for those who haven't here it is..
  6. It runs 10w60 as specified in the handbook although we expect previous owners didn't, aftermarket camshafts are £350 each. The current owner doesn't want to scrap the car and as we know second hand camshafts are hard to come by on their own, a complete engine would be easier. I have a feeling that this old direct injection engine will cause nothing but problems!
  7. Aaaaand relax! Back to work and finally caught up with this thread, a great read with lots of long videos to watch! I'll put a couple up shortly once I've reviewed mine. Big thanks to Steve and Scott for saving my ass when my seatbelt locked up on day 2 and Tim for rebuilding my Turbo for the fun of it. I really was starting to get stressed that it was the end of my ring trip after the oil leak, smoke and lack of seatbelt. Will be some beers on me for you gents at combe! Post ring trip job list... Fix oil leak Fix steering rack leak Find why the WMI isn't having any effect Bring on ring trip 2018 and I hope to see you all again at Combe!
  8. And take the tim tool out of the wheel well. I've had to empty the entire boot before when a hose came off [emoji30] Sent from my iPhone using Tapatalk
  9. The panic has now begun. I'm all loaded, cars washed and polished but it's still gay gold. I've packed the trolley jack, so we should have 3 with redbricks and Tim's. Is 80L of screw wash too much? Sent from my iPhone using Tapatalk
  10. The panic has now begun. I'm all loaded, cars washed and polished but it's still gay gold. I've packed the trolley jack, so we should have 3 with redbricks and Tim's. Is 80L of screw wash too much? Sent from my iPhone using Tapatalk
  11. Nice decision making Chris, if it makes you feel any better my friend Ash is taking his new Civic type R... that too is a lot of money's work of car! Plus he's never been to the ring before [emoji23] haha Sent from my iPhone using Tapatalk
  12. Right you've been to the ring many many times in the ATR, thrashed it and had great fun. Is it time for something different? You want to ring the AMG one day and be able to sit in the bar and tell them German bitches you drive a E63 AMG rather than a cream and brown Volvo, isn't this the perfect excuse? On the other hand would you be there and wish you had the ATR to thrash around? Making yourself sick with worry about anything happening to the AMG? You don't want to regret taking the AMG and not having as much fun as what you could have had. Tbh I feel your pain, it's a really hard decision... Take the 850R [emoji23] Sent from my iPhone using Tapatalk
  13. Ah that'll be it!
  14. http://lmgtfy.com/?iie=1&q=mcgaurd+locking+wheel+nut+removal
  15. Glad you're enjoying it, there were some teething issues with the Ignition coil, TPS and MAF scaling (software) but once we got down to the bottom of that with extensive logging we started with a virgin T5 map and made great progress rather quickly. The actuator is rather unforgiving, making it impossible to reign in the boost below .7 bar at part throttle. Do you know which colour spring it contains? Maybe time for a dyno run post ring? Sent from my iPhone using Tapatalk