VQ 37 HR dyno!!!!!!!!
05-21-2007, 07:08 PM
#1
Father of the 00 VI
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VQ 37 HR dyno!!!!!!!!
just wow ,i had to put this here .
the raising of the dicplacment and the comp being raised from 10.6:1 to 11:1 and the VVEL make for a huge increase . and imagine when the VVEL is tuned
http://www.my350z.com/forum/showthread.php?t=273363
the raising of the dicplacment and the comp being raised from 10.6:1 to 11:1 and the VVEL make for a huge increase . and imagine when the VVEL is tuned
http://www.my350z.com/forum/showthread.php?t=273363
WOW.
05-21-2007, 09:25 PM
#5
Originally Posted by maxspeedse02
That is impressive. I can't believe how flat that torque curve is, just like an LS1. More than likely my next car....
They just make so much more average torque than most motors anyways so nobody really cares. This 3.7's is more like an I-VTEC torque curve, loooong and flat and that's damn impressive for a larger motor.
05-22-2007, 06:12 AM
#10
05-22-2007, 08:44 AM
#12
Originally Posted by liqidvenom
and ls(?) dynos usually just have a tq flatness to them through out.
05-22-2007, 09:31 AM
#13
Originally Posted by nismology
Hard to believe a motor without variable ANYTHING has a flat torque curve throughout. It's a mechanical impossibility, regardless of displacement. Not a knock on it at all, so don't get defensive in your next post, but I'll stand behind my previous statement. They look like camel humps. Low-end is good but doesn't quite match the HUGE mid-range torque which drops off at higher revs. Anything but flat, stock at least. Everything I've seen tells me the stock LS1 was tuned for mid-range torque. Don't want to get too far OT though. This thread is about another great Nissan innovation.
05-22-2007, 11:56 AM
#14
Father of the 00 VI
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one thing i noticed is this car was driven with AC on heat soaked to the dyno and tested .
i would bet people get higher #'s than this
and i believe the 08 z will get this engine ,because nissan has said this tec h will trickle down
i would bet people get higher #'s than this
and i believe the 08 z will get this engine ,because nissan has said this tec h will trickle down
05-22-2007, 12:05 PM
#15
Originally Posted by krismax
one thing i noticed is this car was driven with AC on heat soaked to the dyno and tested .
i would bet people get higher #'s than this
and i believe the 08 z will get this engine ,because nissan has said this tec h will trickle down
i would bet people get higher #'s than this
and i believe the 08 z will get this engine ,because nissan has said this tec h will trickle down
BTW the ECU has a cut feature that turns off the compressor during agressive throttle angles or revs.
05-22-2007, 01:05 PM
#18
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Originally Posted by thatcarguy350
Ahhh, but with new technology, such as VVL, comes many more complications to your swap.
The VQ37 impresses me and I can't wait until its release. I definitely want to feel the power delivery on that thing
05-22-2007, 03:11 PM
#19
Originally Posted by nismology
They look like camel humps. Low-end is good but doesn't quite match the HUGE mid-range torque which drops off at higher revs. Anything but flat, stock at least. Everything I've seen tells me the stock LS1 was tuned for mid-range torque. Don't want to get too far OT though. This thread is about another great Nissan innovation.
80% peak torque at redline. Looks pretty flat to me... sure you weren't thinking of an LT1?
/OT
05-22-2007, 04:27 PM
#22
ls1 dyno
http://www.dragtimes.com/2004-Pontia...aphs-9875.html
that is more flat then what the vq37 can wish to have
http://www.dragtimes.com/2004-Pontia...aphs-9875.html
that is more flat then what the vq37 can wish to have
05-22-2007, 04:29 PM
#23
Originally Posted by nismology
That's not an LS1 dyno...but w/e...
05-22-2007, 04:48 PM
#24
Originally Posted by liqidvenom
ls1 dyno
http://www.dragtimes.com/2004-Pontia...aphs-9875.html
that is more flat then what the vq37 can wish to have
http://www.dragtimes.com/2004-Pontia...aphs-9875.html
that is more flat then what the vq37 can wish to have
Anyhow, that LS2 powerband is from 2500-6000. The 3.7's is 3000-7500+. You do the math.
BTW, whenever the air/fuel graph is included in a dyno chart the HP/TQ curves end up squished and look flatter/smoother than normal. Just an FYI.
05-22-2007, 04:50 PM
#25
Originally Posted by MorpheusZero
05-22-2007, 04:54 PM
#27
Originally Posted by nismology
Anyhow, that LS2 powerband is from 2500-6000. The 3.7's is 3000-7500+. You do the math.
BTW, whenever the air/fuel graph is included in a dyno chart the HP/TQ curves end up squished and look flatter/smoother than normal. Just an FYI.
even ls1 vettes have the same tq platuoe(sp) and they can rev up to 7k easy. and the 3.7's is up and down...more camel humpish if you ask me
05-22-2007, 04:55 PM
#28
Fine, ya got me with the LS1/LS2 model year jive. 
Either way, I still don't think the LS1 comparison is valid simply because its effective operating range is smaller. The 3.7 torque curve is flat for LONGER. If the rev-limit was raised to 8k it would still be making good power up there.
Either way, I still don't think the LS1 comparison is valid simply because its effective operating range is smaller. The 3.7 torque curve is flat for LONGER. If the rev-limit was raised to 8k it would still be making good power up there.
05-22-2007, 04:56 PM
#29
Originally Posted by nismology
Anyhow, that LS2 powerband is from 2500-6000. The 3.7's is 3000-7500+. You do the math.
BTW, whenever the air/fuel graph is included in a dyno chart the HP/TQ curves end up squished and look flatter/smoother than they really are. Just an FYI.
-2k4 goats had LS1s.
-80% peak tq at redline. For reference, the VQ37HR has ~84% peak tq at redline.
-I'm not sure how your powerband comparison is relevant, but the chart is from 1500-6000rpm if you look closely, and it almost completely flat. Either way you look at it, there is a 40ftlb fluctuation (13%) between 1500 and 5500rpm on a car that peaks at 320ftlbs.
05-22-2007, 05:04 PM
#31
Originally Posted by VIP Maxima
uhhhhhh VQ35 swaps are now what, oldskool?????
psh, i wonder who is gonna be the first to swap in a VQ37. we must first aquire a FWD version
psh, i wonder who is gonna be the first to swap in a VQ37. we must first aquire a FWD version
05-22-2007, 05:05 PM
#32
Originally Posted by MorpheusZero
-I'm not sure how your powerband comparison is relevant, but the chart is from 1500-6000rpm if you look closely, and it almost completely flat. Either way you look at it, there is a 40ftlb fluctuation between 1500 and 5500rpm on a car that peaks at 320ftlbs.
Originally Posted by nismology
Either way, I still don't think the LS1 comparison is valid simply because its effective operating range is smaller. The 3.7 torque curve is flat for LONGER. If the rev-limit was raised to 8k it would still be making good power up there.
I'm not saying that LS-series engines don't have a flat torque curve. I'm just saying it's not an apples to apples comparison to the 3.7 because its relative power curve is much broader, IMO. This motor should be compared to the M3's, GT3's, NSX crowd IMO. High-revvers with linear power delivery.
But you all can continue to dissect my posts and miss my overall point if you'd like.
05-22-2007, 05:09 PM
#33
Originally Posted by VIP Maxima
uhhhhhh VQ35 swaps are now what, oldskool?????
psh, i wonder who is gonna be the first to swap in a VQ37. we must first aquire a FWD version
05-22-2007, 05:15 PM
#34
Originally Posted by nismology
ZOMG.
I'm not saying that LS-series engines don't have a flat torque curve. I'm just saying it's not an apples to apples comparison to the 3.7 because its relative power curve is much broader, IMO. This motor should be compared to the M3's, GT3's, NSX crowd IMO. High-revvers with linear power delivery.
But you all can continue to dissect my posts and miss my overall point if you'd like.
I'm not saying that LS-series engines don't have a flat torque curve. I'm just saying it's not an apples to apples comparison to the 3.7 because its relative power curve is much broader, IMO. This motor should be compared to the M3's, GT3's, NSX crowd IMO. High-revvers with linear power delivery.
But you all can continue to dissect my posts and miss my overall point if you'd like.
05-22-2007, 05:23 PM
#35
Originally Posted by MorpheusZero
Dood. You said Ellis Juan = camel hump. I said "not exactly." It's pretty simple.
05-22-2007, 05:28 PM
#36
Originally Posted by nismology
Show me a graph without the a/f at the bottom and I'll be glad to make nice.
http://img.photobucket.com/albums/v6...c-GTO-Dyno.jpg
05-22-2007, 05:30 PM
#37
Originally Posted by MorpheusZero
