WestTexasS2K Posted August 28, 2007 Share Posted August 28, 2007 I dont have a scanner so I cant upload my dyno run but it goes like this 4k rpm 125 ft/lb 95hp 5k rpm 125ft/lb 118hp 5600 rpm 150ft/lb 170hp 6k rpm 153 ft/lb 175hp 7k rpm 165ft/lb 220hp 8k rpm 174ft/lb 268hp 9k rpm 166 ft/lb 298hp This was done on a dynojet 92 degress 58% humidity. 6 dyno runs done back to back no cool down to boost the numbers the motor was 210 degrees when we did the last pull. I do this to make sure the motor is little fat when on the track especially forced feed. The AFR was between 11.8-12.7 from 4-9krpm. Link to comment Share on other sites More sharing options...
Al N. Posted August 28, 2007 Author Share Posted August 28, 2007 Now Loren, that's not very nice is it. Next thing I know, Mazda will drag out his "post head and cam" numbers and make me go :cry: even more... Link to comment Share on other sites More sharing options...
slngsht Posted August 28, 2007 Share Posted August 28, 2007 Now Loren, that's not very nice is it. Next thing I know, Mazda will drag out his "post head and cam" numbers and make me go :cry: even more... Your numbers are slightly higher than mine on a per liter basis Link to comment Share on other sites More sharing options...
WestTexasS2K Posted August 28, 2007 Share Posted August 28, 2007 I cant wait to get that stroker built and then huff on it. I should be about 360 at the wheels and over 200 ft/lb of torque from 4-9.:party: Link to comment Share on other sites More sharing options...
WestTexasS2K Posted August 28, 2007 Share Posted August 28, 2007 Now Loren, that's not very nice is it. Next thing I know, Mazda will drag out his "post head and cam" numbers and make me go :cry: even more... Al I have figured it out. I am only about 25 hp more than you are supercharged. You just need to move that rev limiter from 6k to 9k and that will get you right up there with me. :blueangel: Link to comment Share on other sites More sharing options...
Al N. Posted August 28, 2007 Author Share Posted August 28, 2007 They make a stroker Zetec as well as a Supercharger...but I'll leave that to Ray McNew (owner of dyno/tuning shop) should he ever fulfill his dream of building a Se7en. He was thinking of a Superformance S1. I'm telling you, if we do a club event there, it'll put him over the edge into ownership. ---- For those that haven't been following the plot, I'm seriously considering putting a hotter head and cams on the Cat. Just so I can be marked off-course faster!:jester: Link to comment Share on other sites More sharing options...
powderbrake Posted August 30, 2007 Share Posted August 30, 2007 Al: having a baseline dyno run for your future engine mods is a good idea. You can then evaluate the incremental hp increase. It would be preferable to have the engine at the same temp on the run after the mods. It is also preferable to use the same dyno, as there is no calibration between dynos. This whole dyno thing was researched and commented on ad nauseum on the Corvette Forum a few years ago. When the C5 vette appeared, lots of people made engine mod items with outrageous horsepower claims. One dyno maker joked that he could "prove a horsepower increase by changing tire valve caps" The dynojet, being an inertial dyno doesn't need the feedback transducer and intermittent calibration that a Mustang ( brake type) dyno does, but it always better to use the same dyno to test your mods, as they have their temp and air pressure adjustments set the same. You can get differet numbers on subsequent runs on the same day. Keep the one you want , or an average, and note the increase you get after the mods, rather than concentrating on the "actual"peak hp. The local Lotus club is having a dyno run this saturday. When asked by a member why I wasn't going to dyno my Ultralite, I told him that since I wasn't planning an engine modification, I really didn't care what the baseline numbers were, and generally all dyno runs seem to give disappointing numbers since we hear about hp numbers at the flywheel. Good luck on your mods. Link to comment Share on other sites More sharing options...
scannon Posted August 30, 2007 Share Posted August 30, 2007 For another data point, the 1,800 cc turbocharged Miata engine in my Se7en put out 234 hp and 205 ft lb on a Rototest dyno. The Rototest dyno is bolted to the rear hubs. During the tuning sessions, we lowered the boost from 12 psi to 10 psi and added up to 40 ft lb of torque down low in the range and kept the peak hp and torque figures about the same. It runs cooler with the lower boost. The extra torque came from tuning, not from lowereing the boost. On the track at LOG27 at the suggestion of the dyno tuner, I shut off the electronic boost control and ran on the can which gives about 8 psi of boost. I'm still learning the car and the lower boost makes it easier to get out of the corners. With this boost level, the 2-11 could not stay with me on the straights. Link to comment Share on other sites More sharing options...
Al N. Posted August 30, 2007 Author Share Posted August 30, 2007 Thanks all for you tips and insights. I plan on going back to that same dyno place, as it's close to my brother's house AND they are well known for Zetec tuning (albeit for the Ford Focus). So the dyno (dynojet) will be the same before and after. I'd love to see more people's dyno charts...I can change the title of this make it more inclusive if people start to post up. Damn, Skip...a concours winner AND a track weapon. Well done. They claim the 211 will be at Lime Rock this weekend (static display at least). Link to comment Share on other sites More sharing options...
scannon Posted September 1, 2007 Share Posted September 1, 2007 Damn, Skip...a concours winner AND a track weapon. Well done. They claim the 211 will be at Lime Rock this weekend (static display at least). Thanks Al. My car was faster on the straights but when I rode with Nick in the 2-11 it was obvious he was faster in the corners. Nick is far more experienced on the track than I am and was running the sticky tires. I ram my street Avons as it was too cold to get heat into the Kumhos and I was sure it was going to rain (it did for a bit). If you get a chance to ride in the 2-11, do it, it was a real thrill ride. Link to comment Share on other sites More sharing options...
locostv8 Posted September 2, 2007 Share Posted September 2, 2007 Al I've got this sitting on the shelf if you want to give it a try. http://wrangler.rutgers.edu/gallery/d/11777-2/DSC01843.jpg Link to comment Share on other sites More sharing options...
Recommended Posts
Create an account or sign in to comment
You need to be a member in order to leave a comment
Create an account
Sign up for a new account in our community. It's easy!
Register a new accountSign in
Already have an account? Sign in here.
Sign In Now