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G

Yes there are differences. Euro-speced SR20DEs are closer to Japan-speced SR20DEs. They are "lighter" on emmision stuff and with a 10:1 compression rate.SR20D_GTI said:I have a Euro SR20DE. Could there be any differences?

There is ABSOLUTELY NO CHANCE for a 143hp at the crank weighting close to 2500lbs and with a CD ~.30+ to hit 150mph!!!

I had 150 out of mine but i guess it might be the difference of where the limiter is. I have a freind who has the same as me. We have both had 150 MPH.

Again there is ABSOLUTELY NO CHANCE to hit 150mph in our cars!!!!! (unless it is free-falling down a 2mile deep canyon!!!)

It is simple physics. With those parameters the absolute theoretical top speed is somewhere in the area of 133.5-136.5mph.

Your car (and your friend's car) have very optimistic speedometers.

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Chris

1992 Suny 2.0GTi

I think you are taking this in the wrong way. No-one said your speedo does not show 140mph. It may even show 150, 160 or whatever for all I know.SR20D_GTI said:

What is simply stated by forum members is that there is a limit to the top speed of any car that is horsepower related and can be calculated by using simple physics and technical information from any car.

The calculation is rateher involved but it can be done. So, here is from www.pumaracing.co.uk , the horsepower vs. physically attainable speed for an average car:

(It assumes a car weighing 2500 lbs with driver, 21 square feet fA, 0.35 Cd and front wheel drive so transmission losses are 15% of the flywheel power which is VERY close to our cars and maybe a little optimistic since 2500lbs WITH driver is nowhere close to the truth).

SPEED(mph) FLYWHEEL POWER REQUIRED (hp)

100 _______________ 69

110 _______________ 90

120 ______________ 114

130 ______________ 143 *

140 ______________ 176

150 ______________ 215

160 ______________ 258

170 ______________ 307

Now, since our cars are close to the (*) in the table and 140 requires 176 crank hp, I simply stated that your speedo is rather optimistic.

Chris

PS. The site mentioned above is (in my opinion) the best resource you can find regarding crank vs. wheel hp relationships etc. I suggest forum members cosult it.

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I know that my friend Kyle Davis and Ben Rockwell were clocked by radar going 150+ mph during the Silver State Classic race in Nevada in a NX2000 with simple bolt on mods.hpro123 said:Yes there are differences. Euro-speced SR20DEs are closer to Japan-speced SR20DEs. They are "lighter" on emmision stuff and with a 10:1 compression rate.

There is ABSOLUTELY NO CHANCE for a 143hp at the crank weighting close to 2500lbs and with a CD ~.30+ to hit 150mph!!!

Again there is ABSOLUTELY NO CHANCE to hit 150mph in our cars!!!!! (unless it is free-falling down a 2mile deep canyon!!!)

It is simple physics. With those parameters the absolute theoretical top speed is somewhere in the area of 133.5-136.5mph.

Your car (and your friend's car) have very optimistic speedometers.

=============

Chris

1992 Suny 2.0GTi

There car makes about 145 to the wheels with only a header, UD Pulley, JWT ECU, Exhaust, CAI and JWT S3 cams.

Mike

I have seenSR20D_GTI said:Ok hpro123 lets leave at this i will get you a picture of my speedo doing 140.

I am simply saying that I

The only time I had the opportunity to actually radar-clock my car (working for a local car magazine way back in 1994 when it had 20K miles - and under unspecified weather conditions) it clocked at 215 Kmh = 133.6mph (average of 4 runs - 2 each on opposite directions of the same road strip) and 219kmh = 136mph best run.

Chris

Well Mike,morepower2 said:I know that my friend Kyle Davis and Ben Rockwell were clocked by radar going 150+ mph during the Silver State Classic race in Nevada in a NX2000 with simple bolt on mods.

There car makes about 145 to the wheels with only a header, UD Pulley, JWT ECU, Exhaust, CAI and JWT S3 cams.

Mike

I had enjoyed reading their accounts very much last year but -if you want to be technical- they actually clocked 140mph since this was the limit in their chosen category.

In any case, the NX has a smaller frontal area than Sentras/Sunnys/Almeras and maybe this (plus their 172+ crank hp) may account for their top speed.

I will do an NX + Almera specific calc table and see what it gives.

Chris

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