BK Posted February 15, 2022 Share Posted February 15, 2022 Do the bottom port test again off car to confirm it definitely passes to the top port, therefore being faulty. If it's got a split diaphragm it'll be obvious when disassembled with a tear in it - It's about the only thing that really fails on them. Link to comment https://www.sau.com.au/forums/topic/483339-external-wastegate-opening-at-higher-boost-than-spring-rated/page/2/#findComment-7961176 Share on other sites More sharing options...
Chereboy Posted February 15, 2022 Author Share Posted February 15, 2022 Alright, thanks so much again man, everyone had been heaps of help. I've been soo stuck until now, I'll give an update hopefully tomorrow afternoon after work Link to comment https://www.sau.com.au/forums/topic/483339-external-wastegate-opening-at-higher-boost-than-spring-rated/page/2/#findComment-7961180 Share on other sites More sharing options...
BK Posted February 15, 2022 Share Posted February 15, 2022 👍 Just be careful when you pull the gate apart - remember big spring in there that can send the cover into your face if it flies apart without keeping it compressed on disassembly. Link to comment https://www.sau.com.au/forums/topic/483339-external-wastegate-opening-at-higher-boost-than-spring-rated/page/2/#findComment-7961182 Share on other sites More sharing options...
Chereboy Posted February 15, 2022 Author Share Posted February 15, 2022 Not gonna lie, I'm actually really happy and thankful you just said that cause I know what would have happened aha Link to comment https://www.sau.com.au/forums/topic/483339-external-wastegate-opening-at-higher-boost-than-spring-rated/page/2/#findComment-7961183 Share on other sites More sharing options...
Chereboy Posted February 16, 2022 Author Share Posted February 16, 2022 (edited) The Air Compressor was at 5psi throughout the testing Snapchat-651745023.mp4 Snapchat-9772583.mp4 Edited February 16, 2022 by Chereboy Link to comment https://www.sau.com.au/forums/topic/483339-external-wastegate-opening-at-higher-boost-than-spring-rated/page/2/#findComment-7961202 Share on other sites More sharing options...
Chereboy Posted February 16, 2022 Author Share Posted February 16, 2022 (edited) Think I might have found the issue Edited February 16, 2022 by Chereboy Link to comment https://www.sau.com.au/forums/topic/483339-external-wastegate-opening-at-higher-boost-than-spring-rated/page/2/#findComment-7961203 Share on other sites More sharing options...
BK Posted February 16, 2022 Share Posted February 16, 2022 On 16/02/2022 at 4:02 PM, Chereboy said: Think I might have found the issue Good work, you owe me a carton 😄 That gate diaphragm is exactly the one I linked you to from RHDjapan, so around $150. HKS part 1499-RA057 1 Link to comment https://www.sau.com.au/forums/topic/483339-external-wastegate-opening-at-higher-boost-than-spring-rated/page/2/#findComment-7961204 Share on other sites More sharing options...
Chereboy Posted February 16, 2022 Author Share Posted February 16, 2022 On 16/02/2022 at 5:41 PM, BK said: Good work, you owe me a carton 😄 That gate diaphragm is exactly the one I linked you to from RHDjapan, so around $150. HKS part 1499-RA057 Thanks soo much man, I honestly appreciate it soo damn much. You've been a huge help. Link to comment https://www.sau.com.au/forums/topic/483339-external-wastegate-opening-at-higher-boost-than-spring-rated/page/2/#findComment-7961206 Share on other sites More sharing options...
Chereboy Posted February 16, 2022 Author Share Posted February 16, 2022 On 16/02/2022 at 5:41 PM, BK said: Good work, you owe me a carton 😄 That gate diaphragm is exactly the one I linked you to from RHDjapan, so around $150. HKS part 1499-RA057 Also just curious on how I would fit it on as the one on my wastegate is round but the online one is squared off, do I just run a knife around the outside of the wastegate after clamping it shut? Thanks again Link to comment https://www.sau.com.au/forums/topic/483339-external-wastegate-opening-at-higher-boost-than-spring-rated/page/2/#findComment-7961207 Share on other sites More sharing options...
BK Posted February 16, 2022 Share Posted February 16, 2022 Nah the rhd one is round - have a good look at all the pictures again - it is curved and just a bit wrinkled up. It'll take shape when installing. Link to comment https://www.sau.com.au/forums/topic/483339-external-wastegate-opening-at-higher-boost-than-spring-rated/page/2/#findComment-7961208 Share on other sites More sharing options...
Chereboy Posted February 16, 2022 Author Share Posted February 16, 2022 On 16/02/2022 at 6:31 PM, BK said: Nah the rhd one is round - have a good look at all the pictures again - it is curved and just a bit wrinkled up. It'll take shape when installing. Damn aha, you're spot on again Link to comment https://www.sau.com.au/forums/topic/483339-external-wastegate-opening-at-higher-boost-than-spring-rated/page/2/#findComment-7961209 Share on other sites More sharing options...
tridentt150v Posted February 18, 2022 Share Posted February 18, 2022 On another tack...10psi sounds a bit low. You would need to test, but a 14psi would probably suit that turbo and setup a bit better. Link to comment https://www.sau.com.au/forums/topic/483339-external-wastegate-opening-at-higher-boost-than-spring-rated/page/2/#findComment-7961291 Share on other sites More sharing options...
Chereboy Posted February 20, 2022 Author Share Posted February 20, 2022 On 18/02/2022 at 8:46 PM, tridentt150v said: On another tack...10psi sounds a bit low. You would need to test, but a 14psi would probably suit that turbo and setup a bit better. Hey mate, so your saying it would be worth my while to have a 14pound spring in there instead of the 7pound one? I'm also going to be tuning the car soon after the diaphragm arrives and I'll probably be pushing close of not a little more than 20psi. I'm also probably just going to have the ECU control the boost so I'll just delete the Blitz one Link to comment https://www.sau.com.au/forums/topic/483339-external-wastegate-opening-at-higher-boost-than-spring-rated/page/2/#findComment-7961332 Share on other sites More sharing options...
GTSBoy Posted February 20, 2022 Share Posted February 20, 2022 On 2/20/2022 at 1:16 PM, Chereboy said: close of not a little more than 20psi. The general rule is that you do not want to use a spring that is less than half the boost you want to bleed up to, and more spring is generally better than less. So for 20+ psi, you definitely want to be in the 14 psi spring range, rather than 10, and you definitely don't want to be using a 7. Link to comment https://www.sau.com.au/forums/topic/483339-external-wastegate-opening-at-higher-boost-than-spring-rated/page/2/#findComment-7961333 Share on other sites More sharing options...
Chereboy Posted February 20, 2022 Author Share Posted February 20, 2022 (edited) On 20/02/2022 at 4:27 PM, GTSBoy said: The general rule is that you do not want to use a spring that is less than half the boost you want to bleed up to, and more spring is generally better than less. So for 20+ psi, you definitely want to be in the 14 psi spring range, rather than 10, and you definitely don't want to be using a 7. Alright mad, too easy, I'll definitely be sourcing out at least a 14 psi spring setup. Thanks mate Edited February 20, 2022 by Chereboy Link to comment https://www.sau.com.au/forums/topic/483339-external-wastegate-opening-at-higher-boost-than-spring-rated/page/2/#findComment-7961335 Share on other sites More sharing options...
BK Posted February 20, 2022 Share Posted February 20, 2022 On 20/02/2022 at 3:26 PM, Chereboy said: Alright mad, too easy, I'll definitely be sourcing out at least a 14 psi spring setup. Thanks mate As your HKS standard gate has no spring preload adjustment on it, I'd say you want the purple spring as it should be about 1.1 bar fitted being that's minimum on the adjustable version Available springs from RHDjapan attached, although HKS themselves say only the yellow and purple springs are available now and that the original standard gate spring selection is discontinued. https://www.rhdjapan.com/search/brands/hks/category/turbo-and-na-systems/?q=Spring Link to comment https://www.sau.com.au/forums/topic/483339-external-wastegate-opening-at-higher-boost-than-spring-rated/page/2/#findComment-7961336 Share on other sites More sharing options...
Chereboy Posted February 20, 2022 Author Share Posted February 20, 2022 (edited) Alright, I'm gonna order the purple one tomorrow, I'll see if they can add it to my pending order for the diaphragm as it's apparently going to be sent out on the 21st. Anyone know how long I'm looking at it taking to reach Sydney NSW? I paid for the DHL shipping and wasn't really sure what it meant by 1-5 days as I'm sure it will take much longer than that to arrive and 5 days will be the 21st when I think they are saying it will be sent out. Thanks guys, don't really understand their shipping system . Edited February 20, 2022 by Chereboy Link to comment https://www.sau.com.au/forums/topic/483339-external-wastegate-opening-at-higher-boost-than-spring-rated/page/2/#findComment-7961344 Share on other sites More sharing options...
BK Posted February 20, 2022 Share Posted February 20, 2022 Quick. I'm getting stuff out of Japan from them quicker than the east coast at the moment from like Just jap, Golebys etc. Link to comment https://www.sau.com.au/forums/topic/483339-external-wastegate-opening-at-higher-boost-than-spring-rated/page/2/#findComment-7961345 Share on other sites More sharing options...
r32-25t Posted February 20, 2022 Share Posted February 20, 2022 Usually when I order from rhd it leaves on the Friday afternoon and arrives Monday morning or Tuesday at the latest Link to comment https://www.sau.com.au/forums/topic/483339-external-wastegate-opening-at-higher-boost-than-spring-rated/page/2/#findComment-7961348 Share on other sites More sharing options...
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