Missing your point.
1) Run 1 should be displayed on the left, unless you are in Asia.
2) Max HP and Torque are the same between the 2 runs.
3) Largest difference is that run 1 made torque at 3K: run 2 at 4K
4) Tuner changed scales, making run 2 look much weaker.

 

1) that was just my stupidity when I screenshotted the two PDFs side by side
2 ) correct, this confuses me
3) Yep, 80ft/lbs is a big difference I need to double check the datalog to confirm boost was equal on both
4) I was with the dyno operator in the car, ramp rate was not changed at all.

There was another pull made after these two with the same power/torque/torque curve as run 2, the car was loaded back on the dyno 4 hours later and another 2 pulls made (With a lower ramp rate) and the power/torque/power curve were exactly the sane

 

Pulled the head on saturday

Rods on 2 and 3 confirmed bent .

Looks like what we call 260ft-lbs flywheel is enough

 

 

Long overdue update on this one. 12 months since the original damage and back to the strip. Cold day (14c/57f) and no wind

One decent pass, followed by an awful 60ft and a missed 2-3 shift then rained out for the day

 

 

Pulled the head, dropped a DTI on the block and measured piston heights at TDC, 2 and 3 were about 1.5mm lower in the bore. Very very minimal bend to the rods when I pulled them out.

Swapped in a used NB long block, retuned in on a Dyno to make a bit less torque and called it a day

 

So you're trapping 109 on another stock block? that's really good congrats

 

Yep I guess enough power to trap 109-110mph is as much as reliably possible on a stock block

 

Revisited the tune on this as I swapped to MS3 after the last time at the strip and have also swapped over to a MAF




First up comparison vs last time the car was on the same dyno, Red trace is the latest tune




And a Wastegate boost (~145kpa MAP) vs Max effort tune

 

Nice to see you back.

 

I've been lurking. Started a new job back in November which eats up a lot of time

Tuning the MS3 on a MAF highlights really well how this "little" TD04 is right on the limit of its flow capability

 

Hit the strip today with a sole focus on the launch. So spent the day messing with a few things.

The two 2.0x 60fts were leaving at 3200RPM with the car making close to 7psi on 2 step.

Missed a shift on the 4th pass, the two 2.6s the car bogged trying to use timed retard after launch on MS3. Boost was around 10-12kpa down compared to normal over 5500rpm

 

Not bad. It takes more EBC duty to maintain boost up top. I am typically between 4 and 4500 rpm on a launch under 2 seconds, but there are a lot of variables. Your car is pretty quick, probably eat most street driven cars.

 

I'd dampened the closed loop response a little a tame some overshoot using flat shift and hadn't gotten around to getting the bias table corrected to suit.

Just checked your thread and it looks like you seem to carry a lot more pace through the back half of the track

 

I understand.

Yeah, my car is fast as hell, but I'm on really crappy tires. It messes with people during elimination sometimes. They slow down because they think I am far enough behind. My car is fast at the top of the track. My bottom end is forged, so I can push it a ton.

 

60ft was *****. ET not so much

 

great work

 

What boost were you running on the strip? And the rods seem intact this time? I’m hoping for similar numbers, if I ever get set up.

 

14.5psi peak boost. Rods seem to be holding up absolutely fine, I've put 25 passes on the engine at this power level, trap speeds haven't changed at all. Its making a hair under 8psi on a 4k RPM launch

I don't think you'll realistically see the same power numbers on pump fuel.

Here's an MLV plot of manifold pressure vs RPM and TPS