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Random Thought & question...

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Old 11-29-2010, 04:28 PM
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Random Thought & question...

I'm just wondering why nissan never decided to change the engine in the z's and keep the I6 going on through the 300zx etc. by making it an DOHC? Seems like it would have given them more options and prolonged the I6 for longer. I'm no engine expert so forgive me if its a stupid question, just seems like it would have been the way to go similar to what the supra had... I dunno just curious like the title says its a random thought.
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Old 11-29-2010, 05:12 PM
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does the rb series count? kinda l6 and dohc and produced into the 90's
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Old 11-29-2010, 05:15 PM
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There's no simple answer as many variables go into engineering an entire car. Most argue that an I6 has more benefits than a V6, but engineers still have to balance quality, cost, and efficiency, with other things...
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Old 11-29-2010, 05:19 PM
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Originally Posted by SHADY280
does the rb series count? kinda l6 and dohc and produced into the 90's
Indeed. Speaking of which, Nissan has made many more I6's than V6's: http://en.wikipedia.org/wiki/List_of...nes#Straight-6
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Old 11-29-2010, 05:23 PM
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Originally Posted by J-cubZ
I'm just wondering why nissan never decided to change the engine in the z's and keep the I6 going on through the 300zx etc. by making it an DOHC? Seems like it would have given them more options and prolonged the I6 for longer. I'm no engine expert so forgive me if its a stupid question, just seems like it would have been the way to go similar to what the supra had... I dunno just curious like the title says its a random thought.
they did in japan... they made the 200ZR too bad it never seen the states..
http://zhome.com/Dec99/Kei200ZX-R.htm
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Old 11-29-2010, 06:43 PM
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Originally Posted by NismoPick
There's no simple answer as many variables go into engineering an entire car. Most argue that an I6 has more benefits than a V6, but engineers still have to balance quality, cost, and efficiency, with other things...
Ya good point, I'm sure they must have considered it....maybe lol. I love the I6 but man just seems DOHC with it would open up alot more.
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Old 11-29-2010, 08:13 PM
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Time to build yourself a triple dissected KA24DE head for the L28E.

http://forums.hybridz.org/index.php?showtopic=54764

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Old 11-29-2010, 09:01 PM
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Nissan changed the engine to the V6 for cost mainly. sense the VG was being used in more cars then the I6 was. Tho Originally, the RB engines were meant for the Z cars in replacement of the outdated L engine, instead of a V6. But the I6 would have pushed the cost of the Z up much more, and take it out of the category of the cheap sports car.

Lotta Variables really but I think thats the main issues.
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