barneybrendan Posted August 5, 2011 Share Posted August 5, 2011 (edited) My silicone pipes are sucking flat imediately.Before i go and get all hard pipe made up i would like to work out why its actually happening. Just for anybody thats not aware of it this is on the supercharger setup. would like to add the throttle body was the standard na one first and psi was around 7 pipe were fine at that.Now the throttlebody is before the charger and psi has been increased (unsure what to yet) Edited August 5, 2011 by barneybrendan (see edit history) Quote Link to comment Share on other sites More sharing options...
Guest jamsames Posted August 5, 2011 Share Posted August 5, 2011 maybe less restriction has caused the air to move faster, just throwing my last 2 cents in before i get told off for club membership, ill get it next week then ill post loads of stuff and probably get banned... Quote Link to comment Share on other sites More sharing options...
David P Posted August 5, 2011 Share Posted August 5, 2011 Engine vacuum Barney, you need hard pipes and close joints. Quote Link to comment Share on other sites More sharing options...
Swampy442 Posted August 5, 2011 Share Posted August 5, 2011 Reinforced rubber pipes instead of silicones is the way ahead. Quote Link to comment Share on other sites More sharing options...
barneybrendan Posted August 6, 2011 Author Share Posted August 6, 2011 but why were they fine when i had it dyno'd.when i was blowing into the throttlebody. Quote Link to comment Share on other sites More sharing options...
David P Posted August 6, 2011 Share Posted August 6, 2011 Because when it was blowing, it wasn't sucking. Quote Link to comment Share on other sites More sharing options...
David P Posted August 6, 2011 Share Posted August 6, 2011 Engine vacuum exists behind the butterfly, you have moved yours and extended it. Quote Link to comment Share on other sites More sharing options...
barneybrendan Posted August 6, 2011 Author Share Posted August 6, 2011 Engine vacuum exists behind the butterfly, you have moved yours and extended it. now that makes sense to me now.I like to know the why's. Quote Link to comment Share on other sites More sharing options...
Swampy442 Posted August 6, 2011 Share Posted August 6, 2011 A nice 90 degree hard pipe would do, minimise the suction risk Quote Link to comment Share on other sites More sharing options...
barneybrendan Posted August 6, 2011 Author Share Posted August 6, 2011 (edited) A nice 90 degree hard pipe would do, minimise the suction risk i have to replace all 3 90 degree silicone bends as there were all sucking flat.Might replace all the hard pipe with stainless as i cant weld alloy. Edited August 6, 2011 by barneybrendan (see edit history) Quote Link to comment Share on other sites More sharing options...
David P Posted August 6, 2011 Share Posted August 6, 2011 Do you have space to use D section elbows and short silicone connections? Quote Link to comment Share on other sites More sharing options...
barneybrendan Posted August 6, 2011 Author Share Posted August 6, 2011 i suppose i could just replace with hard elbows and short connectors for a minute. Quote Link to comment Share on other sites More sharing options...
David P Posted August 6, 2011 Share Posted August 6, 2011 My vacuum induction is 'hard-pipe' except for 3 well lipped, close fitting, well clipped straight silicone connections. Quote Link to comment Share on other sites More sharing options...
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