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hi chaps iv converted my 2000 v8 to two stage boost so i can run full boost 11 psi or switch to a lower boost of 5 psi.
these engines run 350 hp on full 11 psi, does anyone have any idea what the output would be at 5 psi ? even if its only a guestimate cheers steve
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two stage boost
Started by braziers, Nov 12 2009 08:41 PM
3 replies to this topic
#1
braziers
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- Name:steve
- Car:2000 lotus esprit v8 se
Posted 12 November 2009 - 08:41 PM
#2
mike_sekinger
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Posted 13 November 2009 - 07:05 PM
The only way to know for sure is to dyno the engine (or use a GPS/accelerometer based system).
My guess would be a little more than 300bhp with your low boost letting. Lotus specified 280bhp for the engine in NA trim, although that may have had different cams.
Why did you opt for the low boost letting? Did you want better fuel economy?
Cheers,
Mike S
My guess would be a little more than 300bhp with your low boost letting. Lotus specified 280bhp for the engine in NA trim, although that may have had different cams.
Why did you opt for the low boost letting? Did you want better fuel economy?
Cheers,
Mike S
... more children than sense ... but
1996 Esprit V8
1998 Esprit V8 GT
1999 Esprit S350 #002 (Esprit GT1 replica project)
1996 Esprit V8 GT1 (chassis 114-001)
1992 Lotus Omega (927E)
1999 Esprit V8SE
1999 Esprit S350 #032
1995 Esprit S4s
1999Esprit V8 GT (ex-5th Gear project)... not a bad innings
#3
braziers
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Posted 14 November 2009 - 03:52 PM
its mainly for economy / saving any stresses to things like gear box ect during normal driving., and switch it for playing
#4
Günter
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Posted 14 November 2009 - 04:11 PM
in stock and not well maintained condition (with the tin-wastegates) and 60°C in the plenum you end with 280hp on the wheels. Or at least this is what I've got some years ago on a dyno-test. Think if you reduce the boost peak (as this is basically the same what the ECM does in case of overheating/hight-plenum temperatures..)it is near to that.
Would be interesting to know what my engine can do now after the rebuild. After all i would be happy to get the Lotus factory results, as i have never got them over the years... . But the positive thing was the good mpg-rate: what i can confirm is that you will get 10L/100km -as long as you not use more than 4000rpm and run above an 170km/h limit. Sound practicable for daily live , or what you think
other interesting point: while i experimented with the E85 in the last years, there was an 'black-box' system in use. It was there to manipulate the injection signals *in the loop* -or with other words: i could 'shut off' the injection on one cylinder-bank and run the car with only 4pots. But you will need to have power to run the pistons& valves in the cold side, so there is still some more fuel needed than on an real 4pot... .
Would be interesting to know what my engine can do now after the rebuild. After all i would be happy to get the Lotus factory results, as i have never got them over the years... . But the positive thing was the good mpg-rate: what i can confirm is that you will get 10L/100km -as long as you not use more than 4000rpm and run above an 170km/h limit. Sound practicable for daily live , or what you think
other interesting point: while i experimented with the E85 in the last years, there was an 'black-box' system in use. It was there to manipulate the injection signals *in the loop* -or with other words: i could 'shut off' the injection on one cylinder-bank and run the car with only 4pots. But you will need to have power to run the pistons& valves in the cold side, so there is still some more fuel needed than on an real 4pot... .
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to name the things if I see them, that's what I call integrity..
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to name the things if I see them, that's what I call integrity..
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