dallaske55 Posted January 31, 2010 Report Share Posted January 31, 2010 HI all, As the title says, I have a 4agze, Its in a Ke55, I'm running a FMIC, Microtech ECU, and the Pulley is hooked up to a switch, via a relay and I have completed the ABV Mod. When the motor was out of the car, I played with the SC and it sucked and pushed air through. When I start the engine the Boost gauge runs at 20 In.Hg. When I flick the switch you can see the Clutch pop in, it spins faster BUT when you rev it, the gauge doesn't move. I've disconneded the Gauge and blown air through, and it shows pressure. The Silicone bends and clamps are new and tight. Any Ideas?? Thanks Quote Link to comment Share on other sites More sharing options...
Roo Posted January 31, 2010 Report Share Posted January 31, 2010 is the engine boosting? or is it the gauge Quote Link to comment Share on other sites More sharing options...
dallaske55 Posted January 31, 2010 Author Report Share Posted January 31, 2010 I think it's the engine... ... the reason being the silicon joints don't expand under revs. Quote Link to comment Share on other sites More sharing options...
Evan G Posted January 31, 2010 Report Share Posted January 31, 2010 (edited) mark the clutch to the pulley and see if it stays in the same spot when you rev it wait is it not make boost in neutral? or under load? Edited January 31, 2010 by Evan G Quote Link to comment Share on other sites More sharing options...
dallaske55 Posted January 31, 2010 Author Report Share Posted January 31, 2010 In neutral, I haven't driven it yet. Does it need to be under load? I didn't think it would have to, as the ECU is not connected to the SC. Quote Link to comment Share on other sites More sharing options...
Evan G Posted January 31, 2010 Report Share Posted January 31, 2010 I'm 70% sure its cause by no load, go for a spin ? Quote Link to comment Share on other sites More sharing options...
Taz_Rx Posted January 31, 2010 Report Share Posted January 31, 2010 (edited) I'm 70% sure its cause by no load, go for a spin ? That may have been the case with a big turbo but a supercharger should be able to make ample boost while in neutral. Does the guage come up to 0 when you give it a rev? Edit: Just for Evan...... :) Edited January 31, 2010 by Taz_Rx Quote Link to comment Share on other sites More sharing options...
dallaske55 Posted February 1, 2010 Author Report Share Posted February 1, 2010 The gauge doesn't move at all, it stays on 20 Vac. When the car is off it goes to 0. When you start it, it goes to 20 Vac. When you rev it, with the SC on or off it stays on 20 Vac??? I've checked the my Vac lines against the ABV mod and they all seem to be in the right place Quote Link to comment Share on other sites More sharing options...
Taz_Rx Posted February 1, 2010 Report Share Posted February 1, 2010 Um :jamie: you didn't plumb the boost guage into the brake booster line behind the ONE-WAY-VALVE did you!? As you blip the throttle in neutral the guage should come up to 0. Hold it a bit longer and it should come up in boost. Make sure you don't have some sort of one way valve in the line that is giving you false readings on the guage. Quote Link to comment Share on other sites More sharing options...
Evan G Posted February 2, 2010 Report Share Posted February 2, 2010 wtf thats like 10psi at 1300 rpm IMPRESSED Quote Link to comment Share on other sites More sharing options...
Roo Posted February 2, 2010 Report Share Posted February 2, 2010 (edited) my 4agze wont boost with no load but the moment i touch the throttle its gots to 0 vac is the engine noisey? any knocking ticking? my 4agze wouldnt boost as my knock sensor was picking up on my cam shims that needed adjusting, the boost gauge should connect straight into the nipple on the intake manifold (after the sc) where you at i could come have a looky if you want I'm not that good at engines but might be able to get running abit better evan g i have hit 14psi at 1400rpms now thats fun :jamie: Edited February 2, 2010 by Roo Quote Link to comment Share on other sites More sharing options...
dallaske55 Posted February 3, 2010 Author Report Share Posted February 3, 2010 The engine doesn't sound like it has any knocking or ticking. I'm sure i did the ABV mod correctly see pic I'm at Upper Coomera, Just off the highway behind St Steven College. Where abouts on the coast are you? Quote Link to comment Share on other sites More sharing options...
dallaske55 Posted February 14, 2010 Author Report Share Posted February 14, 2010 Hi all, I had a chat with a fella at work - an ex-engineer and car finatic. He thought it could be a problem with the ABV. I've added some pics below. Basically he thought because the outlet pipe is soo large 3" and the intercooler is much larger than stock, (the amount of volume that needs to be pressurised) is too large for the SC12 to overcome vacuum - therefore the ABV will constantly stay open. SO, I shut off the ABV (with a piece of aluminium and bolted the ABV back on) and took it for a drive today and ... ... it made boost! I didn't think of this as this is the original setup and the guy I bought the car off of said that it made boost. So, now I have to work out how to remedy this problem so the ABV can work properly. I don't want to keep the SC on all the time. 5lovegtz, it was blowing a bit of smoke today. Another problem to overcome. I might have to set up the ECU to look after the SC. Another thing to try and work out. Thanks for the patients and help all! Quote Link to comment Share on other sites More sharing options...
Evan G Posted February 14, 2010 Report Share Posted February 14, 2010 evan i have hit 14psi at 1400rpms now thats fun :) jesus must be a handful in the wet :) Quote Link to comment Share on other sites More sharing options...
930LLO Posted February 14, 2010 Report Share Posted February 14, 2010 (edited) It sounds like its making boost, maybe you have the gauge hooked up wrong. I recently put a boost gauge on my gze and i was able to get vacumme but not boost, now that i have fixed the wrongly placed T piping it is fine and It also happily makes 10psi with a good rev in neutral. hope this helps mate. Also would blocking the ABV off cause problems? Edited February 14, 2010 by 930LLO Quote Link to comment Share on other sites More sharing options...
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