LaserRS92
Supporting VIP
- 284
- 16
- Aug 14, 2008
-
Fort Wayne,
Indiana
Looks like you guys hit the 500whp you were looking for!!
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Looks like you guys hit the 500whp you were looking for!!
Where do I start? First of all, nice job! I love the custom windage tray. Wow, just look at those fuel pumps. And what great results on the dyno! This is gonna be fun to see run at the Shootout for sure. See you soon.
Down to the wire! Good luck!
Thanks man! I'm excited to meet some people, make sure you come say hello.
Great work!
What did you change since the last dyno? I am assuming compression and Cam, but I am not sure what else. Same manifodl and turbo?
Crazy how well it carries power up top for such a small turine housing. 8cm?
Same cams, change compression from 8:1 to 11.2:1. This isnt a 16G anymore, this is our own billet charger we built for the SAT class at shootout. Yes 8cm housing.
So how much of the extension on the torque curve do you attribute to the housing change vs the cam?
So how much of the extension on the torque curve do you attribute to the housing change vs the cam?
To further Andy's response, the boost is stable from the hit all the way to redline on this charger. The 16G would spike to 44 and fall to 32. the new combo holds 40-41 from 5400 to 8000+ Also the 4-2-1 collector design will broaden the curve, I think this is just more apparent now that boost is stable. (
There was no cam change. The is the exact same head setup, with the new aluminum rod, high compression bottom end on it, and a new turbo.
The turbo is a hybrid unit, which we are testing at the shootout, and we may start selling if it all goes well. It is MUCH larger than a 16G on the compressor and turbine side. Ideally it should be in a TD06 compressor cover, but we're limited in the stock appearing class obviously.
So basically, to answer your question, the entire powerband extension is due to the turbo. Had the 16G stayed on, it would have looked like it did before, except with higher peak numbers.
To further Andy's response, the boost is stable from the hit all the way to redline on this charger. The 16G would spike to 44 and fall to 32. the new combo holds 40-41 from 5400 to 8000+ Also the 4-2-1 collector design will broaden the curve, I think this is just more apparent now that boost is stable. I'm also thinking that removing some over lap would give me more up top as drive pressure is increasing. Boost would creep to 37psi when I had it set around 32 in the early stages of tuning. I would also benefit from a larger intake cam (possibly exhaust cam as well). but the curve would be more peaky. We will see how the new converter acts and I'll probably make a cam decision based off that, and RPM in the traps. To further the cam situation.. I chose these cams because the ramp rate is very high. The intake cam has 264 advertised (@.004) and the @.050 is 226. This allowed for less overlap while maintaining the upper lift duration numbers I am looking for.
Damn I'm logged in as Andy
Phenomenal! What a badass charger!
Ya some how I missed "the cams are the same" even though it was stated in the post right above mine.
Because the x-axis intervals are (intentionally?) not visible, can you tell us where it starts to take a nose dive? In the post below I see reference to 8k+ rpm. So is this along the lines of a 30R turbine? My suspicion was that this much added usable rev-range would not have come from just a bump up from the 070 housing to the 080.
"Peaky" may not be a bad thing if the only real sacrifice to that nice torque curve comes at an rpm the engine never sees after leaving the stripe, no?
Good stuff guys.
extremely interested in the details of this turbo, where do i get one?
Amazing work you did here... Im so jealous
Great job Tyler! The car performed really well at the shootout all in all in my opinion. Thank goodness your dad was able fix the valve on the vacuum pump. Sorry I didn't stop to say hi and meet you. I always get caught up and overwhelmed by everything and never get to talk to 90% of the people I want to. I saw you a couple times and I knew you were busy, so I didn't want to bother you.
Anyway, I have some good videos of your passes that I have to put up yet, but when I do I'll post them here so you can see them.
That does not surprise me. I understand that they are trying to make a budget product for the masses, and this is fine, but that means that the parts get cast/rough machined by the lowest bidder. The consequences from this are what happened here. Not every rod will be perfect, ether from heat treat, forging, or machining. Yes it sux, but sh*t happens. I've been building engines long enough to know that sometimes you get screwed and its no ones fault. On the same note, we have replaced Eagle rods with K1 rods for our builds. I'm not saying that the K1 is a way superior product, they might come from the same place, but it helps me sleep at night.
On another note, I have the engine sitting in the car, but i will not be able to finish it up tonight, but it will be running tomorrow, and baring any huge problems at work, I plan to have it on the rollers again tomorrow night.