Really odd dyno numbers..Discussion...
Thread Starter
Not harsh, just truthful
Joined: Jul 2007
Posts: 5,709
Likes: 0
Really odd dyno numbers..Discussion...
Well I made the trip down to Tampa from Jacksonville to have my car tuned by John from Phearable (Phearable.net). The car was tuned at Precision Motorsports (pm-fl.com) and everything went smoothly, . . . without power being made.
So final results are listed and I am truly baffled as to how the car made almost "worse than stock" numbers on a brand new motor (1100 miles)
Specs:
01' GSR Head
-Buddy Club spec3+ cams
-Buddy Club intake valves
-Stock gsr exhaust valves
-Buddy Club dual valve springs
-AEM cam gears
-Crower retainers
-ARP head studs
JDM B16a block
-shot-peaned rods
-ACL race bearings
-micropolished and balanced crank
-stock P30 pistons
Bolt-ons
-Skunk2 intake manifold
-AEM Fuel Rail
-Password JDM intake
-JDM Type R 4-1 header
-US OEM Type R Exhaust
-NGK wires
-Iridium Plugs
On the bright side, the motor runs GREAT, but just no power or torque. All ailments have been cured, but the car just took a dump on the dyno. I'm bummed, but optimistic that we will get to the bottom of this. I'm going to take it to my buddy's shop this week to run a compression test.
Original motor thread is here:
fresh built swap b16a block/gsr head/tranny 0 miles lots a pics! new price $2,700!!!! - Honda-Tech
Graph:
Bonus shot of the motor when I just got back:
Any ideas guys?
So final results are listed and I am truly baffled as to how the car made almost "worse than stock" numbers on a brand new motor (1100 miles)
Specs:
01' GSR Head
-Buddy Club spec3+ cams
-Buddy Club intake valves
-Stock gsr exhaust valves
-Buddy Club dual valve springs
-AEM cam gears
-Crower retainers
-ARP head studs
JDM B16a block
-shot-peaned rods
-ACL race bearings
-micropolished and balanced crank
-stock P30 pistons
Bolt-ons
-Skunk2 intake manifold
-AEM Fuel Rail
-Password JDM intake
-JDM Type R 4-1 header
-US OEM Type R Exhaust
-NGK wires
-Iridium Plugs
On the bright side, the motor runs GREAT, but just no power or torque. All ailments have been cured, but the car just took a dump on the dyno. I'm bummed, but optimistic that we will get to the bottom of this. I'm going to take it to my buddy's shop this week to run a compression test.
Original motor thread is here:
fresh built swap b16a block/gsr head/tranny 0 miles lots a pics! new price $2,700!!!! - Honda-Tech
Graph:
Bonus shot of the motor when I just got back:
Any ideas guys?
Thread Starter
Not harsh, just truthful
Joined: Jul 2007
Posts: 5,709
Likes: 0
I said he needed a compression/leakdown test. As far as mods : 65mm throttle body, Apex'i N1 exhaust system or similar setup, RMF Replica header or similar setup, more compression, arp rod bolts, and a block with more displacement (most important of all). I still don't know why some people still use B16 blocks with stock crank and rods, i mean you are obviously going to be disappointed with the results, why not just save up a little more and get a gsr block if you are looking to stay all vtec and not frankenstein? 
i guess alot of people with stock Si's just want to do a build but are just too lazy to look for more displacement. 
i guess alot of people with stock Si's just want to do a build but are just too lazy to look for more displacement.
Thread Starter
Not harsh, just truthful
Joined: Jul 2007
Posts: 5,709
Likes: 0
Timing checked and good, valves were adjusted 2 weeks ago before Tune. Cams are entry level with low to mid gains.
Well, assuming a stock b16 motor with I/H/E typically will yield 160+ hp and I have added cams, cam gears, intake valves, an intake manifold, 3 angle valve job, and springs/retainers/and head studs to be able to extend the power band, I would expect more than what i put down.
Well, assuming a stock b16 motor with I/H/E typically will yield 160+ hp and I have added cams, cam gears, intake valves, an intake manifold, 3 angle valve job, and springs/retainers/and head studs to be able to extend the power band, I would expect more than what i put down.
Registered User
Joined: Nov 2003
Posts: 7,161
Likes: 0
Looks about right to me..Big cams with stock compression dont make good power..And thats about the only "power mod" he has.It makes power all the way to 9ish seems like a healthy motor to me.
As far as making power some compression and a better header would go along with the cams nicely.
As far as making power some compression and a better header would go along with the cams nicely.
Thread Starter
Not harsh, just truthful
Joined: Jul 2007
Posts: 5,709
Likes: 0
Looks about right to me..Big cams with stock compression dont make good power..And thats about the only "power mod" he has.It makes power all the way to 9ish seems like a healthy motor to me.
As far as making power some compression and a better header would go along with the cams nicely.
As far as making power some compression and a better header would go along with the cams nicely.
Registered User
Joined: Nov 2003
Posts: 7,161
Likes: 0
I think it should make about 165ish.
Thread Starter
Not harsh, just truthful
Joined: Jul 2007
Posts: 5,709
Likes: 0
I'm not sure on exactly where it should be but it shouldn't be less than stock for damn sure.
Last edited by Paulino; May 10, 2009 at 09:23 PM.
Thread Starter
Not harsh, just truthful
Joined: Jul 2007
Posts: 5,709
Likes: 0
