Bad Bish and a few quick dyno pulls with new stroker-amazing
Long rough day, a lot of work. Today goes to show that if you are going to do a dyno test you better do it the same day on the same dyno.
When I dropped this new engine in I put our fabricated intake on the car. I've never ran or tested it on a stroker. My theories told me it was going to work killer, better than it did on the 2.1's and 2.0's.
The weather the last time I dyno'd the car was about 30 degrees outside. Today it was 72 degrees and very muggy with rain on and off. I do not use weather correction on our dyno.
The first pull with the car was in the 680 whp range, down substantially from the 725 it made last time. The boost was off a bit and I worked on the tune a little. Ended up in the 710 range, not bad considering the weather. Not the gains I expected though with the fab'd intake on the engine. I decided the only way to know for sure was to go back to the JDM intake. This was a PITA because of the AN lines I run. They all had to be re-done and made to fit again. I put the intake back on and made a pull, 665'ish whp. Noticed the boost was down quite a bit. Adjusted the boost and worked on the fuel curve further and actually ended up with a fatter curve than with our Fab'd intake and that's what I'm after. I decided to leave the BR ported JDM intake on the car.
Next up I wanted to run the small runner header I built for the car. First pull was way up on power but the boost was at about 35 psi, I had been trying to keep it right around 32-33 psi peak. Adjusted the boost made another pull an the power was about the same but the car just didn't sound right. I don't know how to explain it but the sound was off. Low/mid range was improved slightly over the larger diameter tubing and the top end was about the same. Down low the boost only came in about 150 rpm sooner and based on the sound of the engine I opted to not run it either. I swapped the larger runner original header I built back on the car and settle in for the final tuning.
After over 20 dyno runs and 6 hours of work the car put down 716 whp and 565 ft lbs at 33 psi of boost.
The car runs as smooth as silk, it's quite impressive. If it ever stops raining in this crappy place I live I'll get it out and make some videos. I'm uploading one now to Youtube with todays dyno pulls on it and some pics/dyno graph. I'll post it once it is up.
When I dropped this new engine in I put our fabricated intake on the car. I've never ran or tested it on a stroker. My theories told me it was going to work killer, better than it did on the 2.1's and 2.0's.
The weather the last time I dyno'd the car was about 30 degrees outside. Today it was 72 degrees and very muggy with rain on and off. I do not use weather correction on our dyno.
The first pull with the car was in the 680 whp range, down substantially from the 725 it made last time. The boost was off a bit and I worked on the tune a little. Ended up in the 710 range, not bad considering the weather. Not the gains I expected though with the fab'd intake on the engine. I decided the only way to know for sure was to go back to the JDM intake. This was a PITA because of the AN lines I run. They all had to be re-done and made to fit again. I put the intake back on and made a pull, 665'ish whp. Noticed the boost was down quite a bit. Adjusted the boost and worked on the fuel curve further and actually ended up with a fatter curve than with our Fab'd intake and that's what I'm after. I decided to leave the BR ported JDM intake on the car.
Next up I wanted to run the small runner header I built for the car. First pull was way up on power but the boost was at about 35 psi, I had been trying to keep it right around 32-33 psi peak. Adjusted the boost made another pull an the power was about the same but the car just didn't sound right. I don't know how to explain it but the sound was off. Low/mid range was improved slightly over the larger diameter tubing and the top end was about the same. Down low the boost only came in about 150 rpm sooner and based on the sound of the engine I opted to not run it either. I swapped the larger runner original header I built back on the car and settle in for the final tuning.
After over 20 dyno runs and 6 hours of work the car put down 716 whp and 565 ft lbs at 33 psi of boost.
The car runs as smooth as silk, it's quite impressive. If it ever stops raining in this crappy place I live I'll get it out and make some videos. I'm uploading one now to Youtube with todays dyno pulls on it and some pics/dyno graph. I'll post it once it is up.
save myself some money.
4th gear pulls, doing a pull in 3rd is impossible, it just spins the tires.
There is no "race" tune, never has been. I tune it like I'm going to drive it. I have no plans to run 40+ psi right now, at only 33 psi the car is making close to what it use to at 43 psi.
The video, I screwed up. I thought once it was built in the publisher I could delete the files from my photo album. I deleted the files before it could upload last night, so now I have nothing. I'll get a copy of the dyno sheet today and post it up.
There is no "race" tune, never has been. I tune it like I'm going to drive it. I have no plans to run 40+ psi right now, at only 33 psi the car is making close to what it use to at 43 psi.
The video, I screwed up. I thought once it was built in the publisher I could delete the files from my photo album. I deleted the files before it could upload last night, so now I have nothing. I'll get a copy of the dyno sheet today and post it up.
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Dave if that thing has a fatter power band " to the left " I'm peretty sure you'll be close to 8s brother. Like she sits. It will be interesting to see the track numbers at this boost level. I'm sure it will be impressive.
I hear you about 4th gear pulls. I'm fighting that my self on Justin's car. Lol
I hear you about 4th gear pulls. I'm fighting that my self on Justin's car. Lol
Last edited by crewdawg130; Apr 27, 2011 at 07:07 AM.
