Torques Posted July 19, 2011 Share Posted July 19, 2011 Hello, I fitted a larger hybrid turbo recently and was told that the intake rubber hose tends to collapse under the vacuum. I weighted my options for a replacement but could not find anything I liked or was willing to pay for. So I came up with the following: After taking measure I bought a 76mm aluminium hose joiner (100mm long) I then lubricated the inside of the rubber hose with oil and slid the joiner inside the hose. It is a very tight fit and it took me about 15 minutes to get the joiner in. After everything looked nice I degreased the inside of the hose to get rid of any excess oil and make the aluminium joiner less prone to slippage. I could image using an aerodynamically more advanced profile for the joiner, but at current it does the job. As you can see from the pictures the outside of the intake hose is a bit bulging which is not a problem and helps airflow. It's a quick fix to a possible issue .. cheap and efficient and non destructive Link to comment https://www.sau.com.au/forums/topic/371512-sucked-shut-hose-counter-meassure/ Share on other sites More sharing options...
TiTAN Posted July 20, 2011 Share Posted July 20, 2011 its the same as the rev210 fix except you arent cutting the pipe to fit the 3" metal tube. Link to comment https://www.sau.com.au/forums/topic/371512-sucked-shut-hose-counter-meassure/#findComment-5922615 Share on other sites More sharing options...
GTScotT Posted July 20, 2011 Share Posted July 20, 2011 I like this idea more than the rev210 one TBH. I think as long as that joiner has a larger OD than the ID of the turbo snout your in business! Would work great for any entry level highflows IMHO. Good work. Link to comment https://www.sau.com.au/forums/topic/371512-sucked-shut-hose-counter-meassure/#findComment-5922669 Share on other sites More sharing options...
scotty nm35 Posted July 20, 2011 Share Posted July 20, 2011 The lower bend will still suck shut at around 250kw but that setup will work quite well up till then. Link to comment https://www.sau.com.au/forums/topic/371512-sucked-shut-hose-counter-meassure/#findComment-5923258 Share on other sites More sharing options...
Torques Posted July 20, 2011 Author Share Posted July 20, 2011 The lower bend will still suck shut at around 250kw but that setup will work quite well up till then. Hi there, The lower end looked quite rigid to me ... Does it really collapse > 250KW? And if the vacuum is really that high, does't that mean a huge restriction? Cheers from London .. Link to comment https://www.sau.com.au/forums/topic/371512-sucked-shut-hose-counter-meassure/#findComment-5923639 Share on other sites More sharing options...
hypergear Posted July 20, 2011 Share Posted July 20, 2011 Tried that， Doesn't work . the lower elbow towards the turbo side would suck shut. Link to comment https://www.sau.com.au/forums/topic/371512-sucked-shut-hose-counter-meassure/#findComment-5923768 Share on other sites More sharing options...
pipster11 Posted July 20, 2011 Share Posted July 20, 2011 its a combo of heat from the manifold heat softening the rubber and the vacuum on that mine is sleeved twice with 3 inch exhaust pipe, at both sections of ribbing Link to comment https://www.sau.com.au/forums/topic/371512-sucked-shut-hose-counter-meassure/#findComment-5923786 Share on other sites More sharing options...
scotty nm35 Posted July 20, 2011 Share Posted July 20, 2011 Hi there, The lower end looked quite rigid to me ... Does it really collapse > 250KW? And if the vacuum is really that high, does't that mean a huge restriction? Cheers from London .. The vacuum must be immense, I had to laugh at GuiltToy's video of the pod filter collapsing on the dyno. http://www.skylinesaustralia.com/forums/topic/287968-guilt-toy-in-georgia-former-soviet-union/page__st__240 I would love to modify my stock airbox to fit two panel filters, or design a new one. That should halve the vacuum I guess. Link to comment https://www.sau.com.au/forums/topic/371512-sucked-shut-hose-counter-meassure/#findComment-5923996 Share on other sites More sharing options...
Torques Posted July 20, 2011 Author Share Posted July 20, 2011 I will see how the hose does on the dyno. Maybe another tube might help .. Heat shielding would also be an option .. though the pipe get constant fresh air from the sucktion .. Is there an alternative to the whole setup? (While keeping the airbox? its a combo of heat from the manifold heat softening the rubber and the vacuum on that mine is sleeved twice with 3 inch exhaust pipe, at both sections of ribbing Link to comment https://www.sau.com.au/forums/topic/371512-sucked-shut-hose-counter-meassure/#findComment-5924132 Share on other sites More sharing options...
pipster11 Posted July 20, 2011 Share Posted July 20, 2011 yeah, the setup that hypergear recommends some silicone elbows and some 3 inch pipe, have a look in his turbo thread for more details Link to comment https://www.sau.com.au/forums/topic/371512-sucked-shut-hose-counter-meassure/#findComment-5924382 Share on other sites More sharing options...
The Mafia Posted July 21, 2011 Share Posted July 21, 2011 This is what SAU is all about - Well done on the mod mate. I like it a lot. Looks stock as f**k too. Link to comment https://www.sau.com.au/forums/topic/371512-sucked-shut-hose-counter-meassure/#findComment-5924770 Share on other sites More sharing options...
Torques Posted July 21, 2011 Author Share Posted July 21, 2011 Funny video .. Maybe the airfilter was an el chepo type with no proper mechanical foundation? The vacuum must be immense, I had to laugh at GuiltToy's video of the pod filter collapsing on the dyno. http://www.skylinesaustralia.com/forums/topic/287968-guilt-toy-in-georgia-former-soviet-union/page__st__240 I would love to modify my stock airbox to fit two panel filters, or design a new one. That should halve the vacuum I guess. Link to comment https://www.sau.com.au/forums/topic/371512-sucked-shut-hose-counter-meassure/#findComment-5925284 Share on other sites More sharing options...
Harey Posted July 22, 2011 Share Posted July 22, 2011 Is there an alternative to the whole setup? (While keeping the airbox? In this thread Stevoss made up a custom metal intake pipe to connect the airbo to the turbo intake: http://www.skylinesaustralia.com/forums/topic/370985-cold-air-box-r34-gtt-anyone-know-where-to-get-one-to-fit-return-flow-coolerstock-cooler/ As a few people said in the linked thread, that is not easy to do as it must join the airbox at exactly the right location on the right angle. I thought Hypergears example was to connect a pod filter not the stock airbox?? Link to comment https://www.sau.com.au/forums/topic/371512-sucked-shut-hose-counter-meassure/#findComment-5927123 Share on other sites More sharing options...
GTSBoy Posted July 22, 2011 Share Posted July 22, 2011 I made up a metal replica of the rubber turbo inlet 10 years ago. Took 4 hours. Worth it. Not having the flexy ribs in the flow path is a reasonable flow derestriction on its own. Link to comment https://www.sau.com.au/forums/topic/371512-sucked-shut-hose-counter-meassure/#findComment-5927195 Share on other sites More sharing options...
southern_tango Posted July 23, 2011 Share Posted July 23, 2011 So using a couple of 3" aluminum pipping should help to stiff the intake rubber ...nice have some from work and they don't have ribsat the end may give it a go and put one in the middle and one in the elbow before the return of the BOV ,but my main compain is if they are going to move for not having the ends ... Link to comment https://www.sau.com.au/forums/topic/371512-sucked-shut-hose-counter-meassure/#findComment-5928805 Share on other sites More sharing options...
pipster11 Posted July 23, 2011 Share Posted July 23, 2011 So using a couple of 3" aluminum pipping should help to stiff the intake rubber ...nice have some from work and they don't have ribsat the end may give it a go and put one in the middle and one in the elbow before the return of the BOV ,but my main compain is if they are going to move for not having the ends ... its all under vacuum so you just won't be able to pressurise the system pre-turbo to do boost leak tests Link to comment https://www.sau.com.au/forums/topic/371512-sucked-shut-hose-counter-meassure/#findComment-5929124 Share on other sites More sharing options...
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