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Discussion Starter #1
someone is going to shoot me for posting all this, but i thought brian might like to add it to the site as a one-stop source for G20 specs...here goes
 

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P10

INFINITI G20 1991
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CAR SPECIFICATIONS

Engine Displacement: 1998 cc.
Engine Location: FRONT
Engine Type: NORMAL
Engine Max Horsepower: 140 bhp
@: 6400 rpm
Engine Torque: 132 lb-ft
@: 4800 rpm
Compression Ratio: 10.0 :1
Maximum engine speed: 7500 rpm
Start Engine Speed: 3500 rpm
with Clutch: DUMP
Transmission Type: MANUAL
Number of Gears: 5
Gear Ratio 1st: 3.06 :1
Gear Ratio 2nd: 1.83 :1
Gear Ratio 3rd: 1.21 :1
Gear Ratio 4th: 0.93 :1
Gear Ratio 5th: 0.73 :1
Gear Ratio 6th: :1
Final drive ratio: 4.18 :1
Driving wheels: FRONT
Car test weight: 2989 lb.
% weight on front wheels: 63 %
Wheelbase: 100.4 in.
Tire section width: 195 mm.
Tire circumference: 5.59 ft.
Wheel diameter: 14 in.
Tire profile: 60 %
Coefficient of drag: 0.30
Frontal area: sq.ft.
Overall height: 54.7 in.
Overall width: 66.7 in.
Ground clearance: 5.3 in.

INFINITI G20 1991
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GENERAL PARAMETERS

Air Temperature: 65 deg. F.
Barometric Pressure: 29.38 in. Hg.
Relative Humidity: 55 %
Elevation above Reference: 0 ft.
Headwind (+), Tailwind (-): 0 mph
Road Grade (+=Ascend, -=Descend): 0 %
Shift Time, Manual: 0.50 sec.
Shift Time, Auto: 0.30 sec.
Engage Time, Manual: 0.20 sec.
Engage Time, Auto: 0.10 sec.
Clutch Slip Max. Time, Manual: 5.00 sec.
Brake Release Time at Start, Auto: 0.10 sec.
Trans. Engage Method-Lin,Prog,Regr: R
[email protected]=Optim,R=Redline,D=Driver,P=Prog: O
Engine Free Decel Rate: 2000 rpm/sec
Engine Bog Down Decel Rate: 4000 rpm/sec
Engine Wheelspin Decel Rate, Manual: 500 rpm/sec
Engine Clutch Slip Decel Rate, Man.: 250 rpm/sec
Engine Trans. Slip Accel Rate, Auto: 750 rpm/sec
Engine Wheelspin Accel Rate, Auto: 250 rpm/sec
Max. Coefficient of Static Friction: 1.00
Max. Coefficient of Kinetic Friction: 0.85
Coefficient of Rolling Resistance: 0.013
Tire Expansion Factor: 0.020 %/mph
Hot Tire Pressure: 35 p.s.i.
Tire Tread to Section Width Ratio: 90.0 %
Wheel and Tire Weight: 45 lb.
Minimum Engine Speed: 700 rpm
Zero h.p. Engine Speed: 600 rpm
Turbo Start Speed: 3000 rpm
Max. Torque Conv. Slack Until, Auto: 2000 rpm
Low Max. Brake Torque Speed, Auto: 2000 rpm
Time Increment: 0.05 sec.
Start Time after Car Moves: 1.00 ft.
Mechanical Losses-Auxiliaries: 2.00 %
Mechanical Losses-Manual Trans.: 6.00 %
Mechanical Losses-Auto Trans.: 8.00 %
Mechanical Losses-Differential: 4.00 %
Mechanical Losses-Axles & Shafts: 5.00 %
Mechanical Losses-Torque Converter: 3.00 %
Max. Clutch Slip Losses, Manual: 10.00 %
Max. Trans. Slip Losses, Auto: 15.00 %
Max. Torq. Conv. Torque Multiplier: 2.25
Effective Engine Radius: 3.0 in.
Drive Shaft Radius: 1.0 in.
Center of Gravity from bottom: 30.0 %

INFINITI G20 1991
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STANDING START ACCELERATION RESULTS

Starting vehicle speed: 0 mph
Starting engine speed: 3500 rpm
Starting gear: 1st

Optimum Shift Points:
1st 7480 rpm @ 37 mph
2nd 7220 rpm @ 60 mph
3rd 6810 rpm @ 86 mph
4th 6720 rpm @ 111 mph

Time to Speed:
0- 30 mph............ 2.6 sec.
0- 40 mph............ 4.6 sec.
0- 50 mph............ 6.2 sec.
0- 60 mph............ 8.2 sec.
0- 70 mph............ 11.4 sec.
0- 80 mph............ 14.4 sec.
0- 90 mph............ 19.2 sec.
0-100 mph............ 24.3 sec.

Time to Distance:
0- 100 ft............ 3.4 sec.
0- 500 ft............ 8.9 sec.
0-1320 ft.(1/4 mile). 16.5 sec.
@ 85.5 mph

Top Speed............. 130.0 mph
 

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Discussion Starter #3
i'm still playing around with optimizing shift points for the p10, i also need to know if the ratios are the same in the p11 gearbox to post those...

as for automatic specs, i'll need to know the ratios of the p10 auto tranny

is this too much information? :)
 

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Nice list of info, the only thing i noticed that was wrong was the compression ratio. I thought that only the JDM spec came with 10:1 while the rest were 9.5:1, correct me if i'm wrong.
 

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i always thought it was better to shift closer to where you have max hp and not to redline it .......... like at the top of the parabola........


P.S. p11?:asian: :depressed :pirate:
 

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If that's the program I think it is (something like Car test, right?) it's not that accurate. there are too many variables that are not easily found, so the numbers can be quite a bit off even with the same hp numbers. It's ok for very general numbers, but that's about it.
 

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The Primera GT's came with 10:1, the rest came with 9.5:1. Also, I didnt know that P10's came with 6 gears?:surprised
 

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cad455 said:
someone is going to shoot me for posting all this, but i thought brian might like to add it to the site as a one-stop source for G20 specs...here goes
Funny you should say that. Brian should still have that info some where on his server.

Prior to this site becoming a 100% forum, it was a 100% website full of G20/Primera information, facts, suspension write ups and even had a small picture gallery of members rides.

Hmm? If only that was still available. (hint! hint!)
 

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Re: Re: the definitive g20 spec list

NismoPC said:

Funny you should say that. Brian should still have that info some where on his server.
That would be me, not Brian! Before it became 100% forum, Brian had nothing to do with the site. But be paitent I'm working on bringing back all that content. :)
 

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Re: Re: Re: the definitive g20 spec list

G-Forces said:

That would be me, not Brian! Before it became 100% forum, Brian had nothing to do with the site. But be paitent I'm working on bringing back all that content. :)
Awe!

Carfusciuos once say: A patient monkey will never run out of bananas :asian:

Thanks Jason!!!!!!
 
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