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May 18, 2014 18:13:09 GMT
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I've just bought myself my 1st turbo powered vehicle, it's a 1994 Renault Extra van that's had a renault 5 gt turbo engine n box fitted. There's a bleed valve fitted already and I've just fitted a boost gauge, my question is, how do you set the pressure? I know that the bleed valve adjusts the pressure up and down, but should it be set at a certain amount of revs? It seems to be reading just over 21psi which seems a bit high, as I've been told they only run about 10-12psi standard? Hope this makes sense!!!!!
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May 18, 2014 18:34:33 GMT
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Don't turn it up too high!
That's what causes so many failures of these engines
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ChasR
RR Helper
motivation
Posts: 10,195
Club RR Member Number: 170
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Setting boost??? ChasR
@chasr
Club Retro Rides Member 170
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May 18, 2014 18:51:44 GMT
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It sounds like it may already be quite high!
Are there any spikes present in the boost?
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May 18, 2014 21:44:55 GMT
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You need a mate and some time. You'll need to drive with your mate viewing the boost gauge, come onto boost whilst driving ( max acceleration) this will give two readings, boost will go up (overboost) then settle and maintain pressure (boost setting) your mate needs to record this and then adjust your bleed valve and try again until your get the figures you want.
OF course don't break the speed limit / drive on private track. Better still go to a rolling Road and have it setup there.
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May 19, 2014 10:54:54 GMT
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If engine is pretty stock mate then most I would wind boost out too is 10-12 psi
Think 7psi is stock from memory but just be careful as they have a habit of unwinding themselves over a while mate
5psi increase should see an extra 20-30 bhp mate
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May 19, 2014 10:57:26 GMT
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Edit to say just seen its running 21 psi I imagine you will be outstripping the fuel regulators demand at that kind of boost
Resulting in car hitting overboost and cutting
Way too much for a gt turbo like I say 10-12 is good until you have it setup mate
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sparkyt
Posted a lot
selling stuff
Posts: 1,767
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May 19, 2014 12:03:02 GMT
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Boost is only part of the story .. . Fuel is what you need to know about ...
Find out what the fuel system is .. read the gas oxygen levels as you run boost . ..
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May 19, 2014 18:08:38 GMT
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See my prior post on "detting" shows what happens to insides of your engine when someone decides to err up the boost by tenfold hahahaah without knowing what they are doing
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