RB Header Dyno
03-18-09, 10:34 PM
#27
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Update to my original post. This weekend while at the track (Buttonwillow) I had the car re-dynoed with the RB collected header and presilencer. New results were 117HP which matches with the 108 2 years ago with a 2-1/4 exhaust and stock manifold. Both of these tests are with same emissions equipment and stock carb built to meet California emissions. I have no clue how my local guy came up with 90-97 HP. Wrong gear and high drivetrain loss? Wrong correction factor? ???
Conclusion (for me at least) is that the RB 2-into-one header gives 8-10HP increase of reasonably stock exhaust (without a cat in either case).
Noisy as hell though. Can't even think of getting in the car without earplugs.
Conclusion (for me at least) is that the RB 2-into-one header gives 8-10HP increase of reasonably stock exhaust (without a cat in either case).
Noisy as hell though. Can't even think of getting in the car without earplugs.
i remember seeing some pro7 dyno sheets back in the day of 112-116hp. thats when you have a NEW (rotors and housings!) engine, new plugs, a pretty dialed in carb, straight distributor shafts etc etc, lots of turd polishing
enjoy it! should be a really fun car to throw around
03-18-09, 11:32 PM
#28
Oh...I always thought it was 100 at the wheels. How is it possible that people are pushing 150 at the wheels with bolt ons then?
And better yet, how do our cars feel so fast? I know it comes down to power to weight ratio, but if what you say is true even our power to weight ratio isn't great. Yet my car bone stock had enough to put me back in my seat on a twisty road or break my tires loose in 2nd gear.
And better yet, how do our cars feel so fast? I know it comes down to power to weight ratio, but if what you say is true even our power to weight ratio isn't great. Yet my car bone stock had enough to put me back in my seat on a twisty road or break my tires loose in 2nd gear.
I got 51whp gain making a total of 189whp switching out a RB header to a custom exhaust.
03-19-09, 02:44 PM
#29
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Even so, it seems extreme that we can go from 80hp to 150 just by doing carb/exhaust/misc stuff. I mean, I know it is very hard to hit 150hp on the stock ports, but I've seen others get in the 120-140 range with the average FB power upgrades. Thats pretty cool to know that we can almost double our power that easily.
For instance, I know that dj55 (sorry, don't quite remeber your name) with his ITBs and other full mods was at like 140 something, and he's on the stock ports if I remember right.
For instance, I know that dj55 (sorry, don't quite remeber your name) with his ITBs and other full mods was at like 140 something, and he's on the stock ports if I remember right.
05-06-10, 01:15 AM
#30
kinda old thread but hey i'm in there so I though I should comment lol.
I did about a 154 whp last time, and this was with mis matched injectors just before blowing the engine a few weeks after IIRC correctly. I'll be going back on the dyno soon and hoping for abotu 170whp
I did about a 154 whp last time, and this was with mis matched injectors just before blowing the engine a few weeks after IIRC correctly. I'll be going back on the dyno soon and hoping for abotu 170whp
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