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dek swap 280 hp build validation

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dek swap 280 hp build validation

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Old 11-30-2017, 09:28 AM
  #41  
3.5 Swapped!
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I'll just wait this out until the hard stuff has been figured out, because eventually my oil burning 3.5 DE is going to need to be replaced, and I'll need to figure out which 3.5 to replace it with. I'm sure I'll want to stick with 3.0 timing and my Nistune, but everything else is up in the air.
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Old 11-30-2017, 05:14 PM
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+09 maxima motor w/ a set of cams. As much as i said. i wouldn't buy a normal DE over one of the newer motors lol. IF you can afford it a Haltech will eliminate a lot of the key nonsense associated with the newer ECUs. However at that point....a 4th gen, really?
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Old 11-30-2017, 07:09 PM
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Originally Posted by Crusher103 View Post
+09 maxima motor w/ a set of cams. As much as i said. i wouldn't buy a normal DE over one of the newer motors lol. IF you can afford it a Haltech will eliminate a lot of the key nonsense associated with the newer ECUs. However at that point....a 4th gen, really?
Would those be 3.0 or 3.5 cams?
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Old 11-30-2017, 07:45 PM
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3.0 cams would make things easier. Hit up JWT and let them know what you're doing.

Keep in mind that with cams you should check the clearance on all the base circles. Depending on what you ens up with this may require clearancing what you have or buy some new buckets to do so.
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Old 12-01-2017, 04:56 AM
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Originally Posted by 95maxrider View Post
Would those be 3.0 or 3.5 cams?
Originally Posted by 95naSTA View Post
3.0 cams would make things easier. Hit up JWT and let them know what you're doing.

Keep in mind that with cams you should check the clearance on all the base circles. Depending on what you ens up with this may require clearancing what you have or buy some new buckets to do so.
^What he said. Although you can use 3.5 cams you will just have to use the adapters or drill the cams. I would suggest drilling them and getting longer dowel pins.
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Old 01-01-2018, 10:32 PM
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I made 274hp all motor with 3.0 timing on a 05 motor..
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Old 01-04-2018, 05:06 AM
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A graph and details would actually add value to this thread.
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Old 08-14-2018, 10:19 PM
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Originally Posted by vipervadim View Post
there have been about 10 3.0timing HR swaps running around, but nobody has dyno'd or done anything track/street related with them (besides 95Nasta)

I see many many many 5.5gen HR swaps...

But I have yet to see a proper 3.0timing HR build with supporting mods and proper tuning.

In the past three years of the 3.0 hr builds there's been 0 progress, nobody still seems to know what the optimal HR manifold VIAS switchover RPM, or is it better to gut the manifold = simple engine efficiency steps needed to determine power delivery and peak power.

Just seems like there's still a lot of unfinished work left to do, then just making it 'fit and run'

from what I recall the highest HP 3.0timing 3.5DE was 272whp done over 10 years ago with 'old tech'
Maybe tying a RPM switch for a RPM activated VIAS and the TPS WOT switch to activate the VIAS would work?
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Old 08-15-2018, 04:36 AM
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I had mine set with Emanage using what Darren chose for a full swap as a guide.
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Old 10-12-2018, 07:17 PM
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Been awhile but thought I'd post an update. Been playing around with 4" intake (when I'm not playing with my new son..hence the lag in updates). As you can see...just a 4" intake (with a Lightning MAF) didn't really do much compared to the 3.25" intake. Then I "cleaned up" the runners on the Altima UIM (there are some "ledges" inside the runners that need to be removed)....and voila. Pretty good gains across the board. Makes me wonder what I'd see with the 3.25" back on.


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Old 10-17-2018, 01:40 PM
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Originally Posted by tkriggs View Post
Been awhile but thought I'd post an update. Been playing around with 4" intake (when I'm not playing with my new son..hence the lag in updates). As you can see...just a 4" intake (with a Lightning MAF) didn't really do much compared to the 3.25" intake. Then I "cleaned up" the runners on the Altima UIM (there are some "ledges" inside the runners that need to be removed)....and voila. Pretty good gains across the board. Makes me wonder what I'd see with the 3.25" back on.

Good stuff man. Have you thought about taking it another step and chopping out the shelf in the plenum?
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Old 10-18-2018, 08:36 AM
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I've taken out the "power valves" and used block off plates and it didn't do anything (no gains) so I'm hesitant to actually cut that shelf out (this would be a SSIM correct? - which I've read doesn't really do much for low to mid ranges). You know of any results/examples where the shelf has been removed with positive gains? The gains seem to be made in the "flow"...be it a 3.25" or 4" intake or smoothing/porting the upper and lower IMs. I personally think the 4" intake might be too big (too much velocity lost) but I'm not going to mess with it right now. I might port the 2011 Maxima UIM and/or the 2017 Maxima UIM I have and put those back on to see what happens. In the past putting those on gained some top end HP while shifting the curves to the right (too much midrange loss in my opinion). Do you (or anyone) know if a 2016+ VQ35 can be converted...I assume it can.
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Old 10-18-2018, 01:43 PM
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Yes, basically SSIM'ing it. There was a post floating around from FB, let me see if I can dig it up. Basically it was saying yes there are gains only if fully bolted/tuned. But this was on 3.5 timing, not 3.0 so YMMV.
Personally I'd want to do an AB test on the dyno with modded manifolds ready to go. I'm on the fence if it would be worth testing on both altima and maxima manifolds, but it might be worth it to see how they do up to ~7200 because most of your dynos appear to be at stock rev limit. Then toss in tb size and intake size on top of it all..

Yes, the new 2016 VQ35 can be converted, its just a matter of verifying cam timing with the potentially updated cams or using aftermarket 3.0 cams like you did.
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