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25/30 Cam Timing

iruvyouskyrine

By iruvyouskyrine,
in Engines & Forced Induction

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iruvyouskyrine Grand Master

iruvyouskyrine

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Nothing but a story of neglect. Have been chasing a misfire issue ever since we first upped the boost. Turns out it was an issue with the adaptronic software. I have QR drift matsuri in October so will go back to the tuner before then and up the boost and FINALLY play with the cam gears haha. Will post results in here for everyone.

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iruvyouskyrine
iruvyouskyrine

Well if bet my left nut it's not electrical. Did absolutely everything myself and tuner could think of but still no avail. Thinking it could be a leaky injector seal or something similar. Out of rego

iruvyouskyrine
iruvyouskyrine

Getting some D585's and a 5 port boost solenoid and going back for retune so hopefully should have some results soonish with a bit of luck.

iruvyouskyrine
iruvyouskyrine

The block is however Nissan made it back in 1988 haha. Just a wrecker RB30 bottom end with 1.2mm restrictor. Neo head, standard cams, 6 boost exhaust mani, Greddy ffp, turbosmart 45mm hypergate, Hyp

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lcxu105 Proficient

lcxu105

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I will have mine together in the next few weeks and then back in the car hopefully by the end of the month.  Then it will be off to John from Next up performance for run in and tune. 

We will probably dial in the cams as close as possible without adjustable cam gears.  Not a fan of them even tho lots of people use them I won't be as I'm more a set and forget person. 

iruvyouskyrine Grand Master

iruvyouskyrine

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No worries man, let us know what you end up setting them at. Ben C34 did some investigating ages ago and found that if you align them to the TDC marks on the rear timing cover they are 8deg out (I think 8deg retarded)

I am still running standard Neo baby cams by the way.

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Pr0x1mity Proficient

Pr0x1mity

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On 7/30/2016 at 10:45 AM, iruvyouskyrine said:

Nothing but a story of neglect. Have been chasing a misfire issue ever since we first upped the boost. Turns out it was an issue with the adaptronic software. I have QR drift matsuri in October so will go back to the tuner before then and up the boost and FINALLY play with the cam gears haha. Will post results in here for everyone.

emoji106.png

So I had an almost identical misfire issue...

 

Turned out to be the cam timing being out. Found that even setting it to the marks it would be out a bit. Set it, turn it over 1 full turn, check again. Etc etc

 

I luckily have access to a friends dyno to play with this stuff with him, so we were able to see some real documented results. Could to 282kw by 4800rpm but would misfire like hell above that. Now the same boost comes on later and goes hard to limiter. Next is a retune for 20psi and to dial in the cams and EBC (Y) 

Edited by Pr0x1mity

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