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Thread: N1 vs 20V blog, ate TB screw, fixed... i think.

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Posts: 41-50 of 147
2012-04-27 04:12:23
#41
Originally Posted by Forced
i believe coheed conducted the test properly, the only issue is im assuming he went 20v low boost, 20v high boost, n1 high boost, n1 low boost, so the last numbers might not be 100% from heat soak, but the complete drop in test shows how the cams really perform, but your right thats scary without a wideband but if his tune was that on edge from before i would be worried regardless


The N1 were tested on low first. we then went to high boost and did a couple pulls. When we tried to pull up the first N1 graph, it said "runtime error". Just going from what JC told me, the power was close. Without a graph I cannot substantiate his claims on power. It still made less power than the 20V on low boost.

I will be testing low boost runs again, believe me on that. but doing this whole dyno test cost about $300 and I had the cams donated for the test. C16 isn't cheap, dyno is $100/hr, my valve cover gasket required replacement after it started seeping, it's not cheap.

While I was frustrated to not have AFR on these runs, JC was cool and knocked the bill down. For 4 hours on the dyno, that's awesome.

I'll start taking donations for any testing you guys want me to do, but since I don't own the shop these tests come out of pocket.
2012-04-27 04:15:55
#42
youve gone above and beyond.

save up, spend the money on dialing the timing in on those n1's get that afr dead solid and im sure youll pull even more power !

stratton.
2012-04-27 04:29:16
#43
The AFRs are rich, and I keep them on the rich side. Admittedly though, the AFR gets really rich up top. High 10's aren't frequently seen, but it is def low 11s. Peak torque is around 11.7-11.8.

I took it out for a spin, but it was raining

I wanted to drive it though. the car is sooo quiet on the small lobes. The 20V/VET are noticeably louder. VET was loudest, for obvious reasons. But when the cams switch it is nuts. I'll let you guys know what I think of the power on low boost when it dries up.

Makes me kinda wonder though: if boost was 15psi on both cams, they likely would have produced the same exact numbers. What would we do then? lol.
2012-04-27 04:41:54
#44


This is why I really want to see the N1 on a cool motor. I would like to see the N1 make more. power like the SR16 cams did in this old comparison. But since these were not back to back, there are more variables still.

the SR16 cams made more power in this run, but I hardly think the N1 would make less power than the SR16 cams... But its very possible. Heat was probably the biggest factor. Power dropped from 517whp to only 505whp in just one run. This comparison proves that both of these cams are awesome in my book. If I had an ice-box and could do comparisons that way... awesome.

But the SR16 cams made pretty much the same kind of gains over the 20V in the previous comparison. Mid range delivery, there is a huge difference in the way the cams react. The N1 basically performed like the 1.6 cams in this regard. No real loss of bottom end, but the N1 come on harder and a bit faster.

I predict 355-360whp on the N1 cams without the heat issues. Cold run to cold run. I'll get it down there in a bit and do some more runs.
2012-04-27 04:47:09
#45
In for some vids on 19psi and n1's. Please, please please. lol.
2012-04-27 09:13:42
#46
Originally Posted by Coheed
...
I will be testing low boost runs again, believe me on that. but doing this whole dyno test cost about $300 and I had the cams donated for the test. C16 isn't cheap, dyno is $100/hr, my valve cover gasket required replacement after it started seeping, it's not cheap.

While I was frustrated to not have AFR on these runs, JC was cool and knocked the bill down. For 4 hours on the dyno, that's awesome.

I'll start taking donations for any testing you guys want me to do, but since I don't own the shop these tests come out of pocket.


Man that's a lot of money, I guess switching cams out is not quick! I would consider doing two different dyno sessions then, that way you pay $200 instead of 300+.

Originally Posted by Coheed

But the SR16 cams made pretty much the same kind of gains over the 20V in the previous comparison. Mid range delivery, there is a huge difference in the way the cams react. The N1 basically performed like the 1.6 cams in this regard. No real loss of bottom end, but the N1 come on harder and a bit faster.


So it seems like, if you stay low PSI your better off with the cheaper 16VE's. I'm surprised 20V's do so badly, especially since they are meant for NA motors. Keep an eye out on your gas mileage, I wouldn't mind seeing if N1's get a bit better then 20V's
2012-04-27 12:34:44
#47
Yeah, I was expecting better low end as well from the 20v... But man they made awesome power on low boost.
2012-04-27 14:17:29
#48
Great info, and awesome results. Congrats man!
2012-04-27 21:36:12
#49
keep up the good work
2012-04-29 01:04:14
#50








I had to get videos where I wasn't giggling hysterically.
Last edited by Coheed on 2012-04-29 at 01-09-24.
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