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article details
Author Shawn Church
Categories Dyno Testing, Civic
Create Date September 27, 2005 19:54
Last Update September 30, 2005 14:52
Dyno Testing the R18 Engine
Without further ado, take a look at the dyno test of our 2006 Civic EX 5MT Coupe

Note that the higher of the two runs was performed in 3rd gear. The lower was in 4th gear. Power and torque at the hubs indicate that this engine is producing more like 150-155 hp and 135-138 lbs-ft of torque at the engine. Also note that the power peaks and torque peaks correspond almost perfectly with the advertised peaks of 4300 rpm for torque and 6300 rpm for horsepower.

We also noted that the engine would occasionally knock at low rpms, indicating that it might indeed benefit from higher octane gasoline (all testing was done on whatever Honda delivered it to us with - probably 87 octane). Power was somewhat soft below 2000 rpm. We feel that this was probably due to the new small valve opening mode on the R18 designed for optimal fuel economy. Once you got to full throttle and above 2000 rpm, however, performance was brisk.

We have heard some doubt expressed about these numbers, so we thought we would see how the dyno results stacked up with acceleration testing. Our 0-60 testing returned consistent times in the 8.2-8.5 second range. Average acceleration in 1st gear was 0.47g with a 5000 rpm launch. From 4500 to 7000 rpm (the rpm range we accelerated through with a hard launch in first gear), average torque is about 113.5 lbs-ft at the hubs. From past experience, for wheels and tires of this size, a loss of 5-6 lbs-ft of torque is expected from hub to contact patch.

An average of 107.5 lbs-ft of torque, multiplied by a first gear ratio of 3.143 and a final drive ratio of 4.294 gives us a total torque at the axles of 1485 lbs-ft. The tire size of 205/55/16 gives us a tire radius of 1.04 ft. This means an average thrust of 1440 lbs in 1st gear. Our total weight for the car (2705 lbs) plus driver and equipment (230 lbs) was 2940 lbs. This amounts to an maximum average acceleration in first gear of 1450/2940 = 0.49g. While this is slightly higher than what was recorded, launches were performed with a great deal of wheelspin to keep the engine speed up, accounting for some error.


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1:53 - 6.71MB

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Date Thread Starter Thread
12-02-2005 13:18
If my civic is 5AT.   (Score: 1, Normal)
kenken3686
09-29-2005 01:06
engine mounts?   (Score: 1, Normal)
kiwikungfu
09-29-2005 12:16
Re: engine mounts?   (Score: 1, Normal)
TonzX22
11-11-2005 09:53
Re: engine mounts?   (Score: 1, Normal)
munchiemond
09-29-2005 14:30
engine knock   (Score: 1, Normal)
iwu
09-29-2005 21:34
Re: engine knock   (Score: 1, Normal)
Hondarific
09-30-2005 00:17
Re: engine knock   (Score: 1, Normal)
notyper
09-30-2005 00:19
Re: engine knock   (Score: 1, Normal)
OptimusPrimeXXX
09-30-2005 00:32
Re: engine knock   (Score: 1, Normal)
CSi
09-30-2005 02:40
Re: engine knock   (Score: 1, Normal)
anime_man24
09-30-2005 08:55
Re: engine knock   (Score: 1, Normal)
99SI
09-30-2005 10:22
premium gains   (Score: 1, Normal)
watchdoc
09-30-2005 10:31
Re: premium gains   (Score: 1, Normal)
porky3
09-30-2005 11:14
Re: premium gains   (Score: 1, Normal)
iwu
09-30-2005 11:41
Re: premium gains   (Score: 1, Normal)
Hondarific
09-30-2005 13:57
understanding knock   (Score: 1, Normal)
watchdoc
09-30-2005 15:56
Re: understanding knock   (Score: 1, Normal)
Hondarific
09-30-2005 16:06
Re: understanding knock   (Score: 1, Normal)
iwu
09-30-2005 16:07
Re: understanding knock   (Score: 1, Normal)
RyanDL
09-30-2005 16:21
Re: understanding knock   (Score: 1, Normal)
Dren
09-30-2005 16:48
Re: understanding knock   (Score: 1, Normal)
JeffX
09-30-2005 16:59
Re: understanding knock   (Score: 1, Normal)
iwu
10-01-2005 20:36
Re: understanding knock   (Score: 1, Normal)
foreverev3r
10-02-2005 13:45
Re: understanding knock   (Score: 1, Normal)
rsmith
09-30-2005 17:11
Re: understanding knock   (Score: 1, Normal)
porky3
09-30-2005 18:07
Re: understanding knock   (Score: 1, Normal)
Hondarific
10-01-2005 09:38
plastic manifold   (Score: 1, Normal)
watchdoc
10-07-2005 12:46
Re: plastic manifold   (Score: 1, Normal)
spicer
11-11-2005 09:50
Re: engine knock   (Score: 1, Normal)
munchiemond
10-02-2005 01:09
Speedo lag   (Score: 1, Normal)
ipribadi
10-02-2005 13:31
Re: Speedo lag   (Score: 1, Normal)
rsmith
10-02-2005 20:07
Re: Speedo lag   (Score: 1, Normal)
semperfisc
10-02-2005 20:25
Re: Speedo lag   (Score: 1, Normal)
LilChowWow
11-11-2005 09:38
Re: Speedo lag   (Score: 1, Normal)
munchiemond
10-01-2005 01:34
Cracks   (Score: 1, Normal)
TonzX22
10-01-2005 11:21
Re: Cracks   (Score: 1, Normal)
RyanDL
10-01-2005 11:40
Re: Cracks   (Score: 1, Normal)
TonzX22
10-01-2005 14:09
Re: Cracks   (Score: 1, Normal)
Price
10-17-2005 16:10
Re: Cracks   (Score: 1, Normal)
DoubleWishbone
11-11-2005 09:35
Re: Cracks   (Score: 1, Normal)
munchiemond
11-02-2005 20:15
r18 aftermarket   (Score: 1, Normal)
RoninTalesDotCom
09-28-2005 11:00
136 hub hp for R18 it's good!   (Score: 1, Normal)
civic_cx_92
09-29-2005 14:37
Re: 136 hub hp for R18 it's good!   (Score: 1, Normal)
TonyEX
09-30-2005 00:19
Re: 136 hub hp for R18 it's good!   (Score: 1, Normal)
notyper
09-30-2005 10:23
Re: 136 hub hp for R18 it's good!   (Score: 1, Normal)
TonyEX
10-18-2005 17:55
Re: 136 hub hp for R18 it's good!   (Score: 1, Normal)
hondaracer
09-28-2005 07:47
How does it compare to say, an Integra LS?   (Score: 1, Normal)
8000RPM
09-28-2005 10:10
Re: How does it compare to say, an Integra LS?   (Score: 1, Normal)
DCR
09-28-2005 12:26
Re: How does it compare to say, an Integra LS?   (Score: 1, Normal)
shingles
09-28-2005 12:39
Re: How does it compare to say, an Integra LS?   (Score: 1, Normal)
8000RPM
09-28-2005 12:40
Re: How does it compare to say, an Integra LS?   (Score: 1, Normal)
99SI
09-28-2005 13:13
Re: How does it compare to say, an Integra LS?   (Score: 1, Normal)
notyper
09-28-2005 19:42
Re: How does it compare to say, an Integra LS?   (Score: 1, Normal)
magueto
09-28-2005 21:27
Re: How does it compare to say, an Integra LS?   (Score: 1, Normal)
anime_man24
09-28-2005 22:14
Re: How does it compare to say, an Integra LS?   (Score: 1, Normal)
mystiklegendz
09-28-2005 23:54
Re: How does it compare to say, an Integra LS?   (Score: 1, Normal)
cobalt
10-13-2005 21:53
Re: How does it compare to say, an Integra LS?   (Score: 1, Normal)
Djaric
10-13-2005 16:54
One piece head/header?   (Score: 1, Normal)
Djaric
09-29-2005 20:35
How about a dyno with the airbox off.   (Score: 1, Normal)
Acuratuningx16
09-30-2005 11:45
Re: How about a dyno with the airbox off.   (Score: 1, Normal)
JeffX
10-01-2005 11:35
Re: How about a dyno with the airbox off.   (Score: 1, Normal)
uhhhh
10-06-2005 13:50
here's a clip   (Score: 1, Normal)
JeffX
09-29-2005 16:54
DX vs EX   (Score: 1, Normal)
96civicEX
09-29-2005 21:03
Re: DX vs EX   (Score: 1, Normal)
corey415
09-29-2005 22:39
Re: DX vs EX   (Score: 1, Normal)
DaBlackT
09-30-2005 11:22
Re: DX vs EX   (Score: 1, Normal)
96civicEX
09-30-2005 11:53
Re: DX vs EX   (Score: 1, Normal)
jeffbatt
09-30-2005 12:55
Re: DX vs EX   (Score: 1, Normal)
JeffX
10-02-2005 20:14
Re: DX vs EX   (Score: 1, Normal)
outersquare
09-30-2005 13:10
Re: DX vs EX   (Score: 1, Normal)
Driving91LX
09-30-2005 16:17
Re: DX vs EX   (Score: 1, Normal)
Dren
10-02-2005 05:17
Re: DX vs EX   (Score: 1, Normal)
Jordan5cyl
10-05-2005 12:05
Re: DX vs EX   (Score: 1, Normal)
revvit
10-05-2005 21:25
Re: DX vs EX   (Score: 1, Normal)
DaBlackT
10-04-2005 13:37
Wheel weight?   (Score: 1, Normal)
Hondu
10-02-2005 00:39
comparison   (Score: 1, Normal)
Rydin24inchdubz
10-01-2005 01:56
Cracks   (Score: 1, Normal)
TonzX22
09-30-2005 23:04
Who is the guy in the vid, Shawn?   (Score: 1, Normal)
harky007
10-01-2005 00:26
Re: Who is the guy in the vid, Shawn?   (Score: 1, Normal)
Stephen
09-29-2005 23:57
Are the assupmtions of flywheel horsepower slightly optimistic?   (Score: 1, Normal)
Aaron97SH1
09-30-2005 00:15
Re: Are the assupmtions of flywheel horsepower slightly optimistic?   (Score: 1, Normal)
notyper
09-30-2005 00:29
Re: Are the assupmtions of flywheel horsepower slightly optimistic?   (Score: 1, Normal)
CSi
09-30-2005 02:46
Re: Are the assupmtions of flywheel horsepower slightly optimistic?   (Score: 1, Normal)
anime_man24
09-30-2005 16:18
Re: Are the assupmtions of flywheel horsepower slightly optimistic?   (Score: 1, Normal)
HONDA_99
09-30-2005 19:45
Re: Are the assupmtions of flywheel horsepower slightly optimistic?   (Score: 1, Normal)
Aaron97SH1
09-30-2005 20:16
Re: Are the assupmtions of flywheel horsepower slightly optimistic?   (Score: 1, Normal)
porky3
09-28-2005 15:44
Honda rating HP at the wheels now??   (Score: 1, Normal)
hopeful_si
09-28-2005 18:31
Re: Honda rating HP at the wheels now??   (Score: 1, Normal)
notyper
09-30-2005 16:41
Re: Honda rating HP at the wheels now??   (Score: 1, Normal)
KaP TypeSH
09-30-2005 15:07
nice video   (Score: 1, Normal)
civic_cx_92
09-30-2005 09:08
Just couldn't resist   (Score: 1, Normal)
6SPDTL
09-29-2005 11:30
137.9 hub hp with Air Conditioning on?   (Score: 1, Normal)
1atm
09-29-2005 11:58
Re: 137.9 hub hp with Air Conditioning on?   (Score: 1, Normal)
shingles
09-29-2005 12:45
Re: 137.9 hub hp with Air Conditioning on?   (Score: 1, Normal)
1atm
09-29-2005 13:01
Re: 137.9 hub hp with Air Conditioning on?   (Score: 1, Normal)
8000RPM
09-29-2005 12:23
Re: 137.9 hub hp with Air Conditioning on?   (Score: 1, Normal)
RyanDL
09-28-2005 18:10
Break in? Swap potential?   (Score: 1, Normal)
cyisalwayshungry
09-28-2005 22:15
Re: Break in? Swap potential?   (Score: 1, Normal)
Hrandy
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