Rev-up VS. Non Rev-up - 6MT.net Infiniti G35/G37/GTR Forums
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post #1 of 52 Old 02-09-2009, 03:44 PM Thread Starter
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Default Rev-up VS. Non Rev-up

What is the difference between the two really? is it the higher red line? or hp difference?

Those can only mean that there is a lot more different with the guts of the engine, so what is it?

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post #2 of 52 Old 02-09-2009, 04:47 PM
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rev-up motors high little bit higher red line, i believe 7k and 298 hp. non rev-up motors have red line @ 6.6k and 280 hp but non rev-up motors have higher torque. so.... i think it's even. real difference is the interior. 04 have brembo on 6mt and rev ups have better quality interior. also rev ups have sports front bumper and 19" wheels.

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post #3 of 52 Old 02-09-2009, 05:37 PM
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...higher redline, slightly more hp, but with less torque.

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post #4 of 52 Old 02-09-2009, 05:49 PM Thread Starter
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But why do they have more hp and higher redline?

For example, I was looking at getting the mrev manifold and was told it is not worth it bc I have a non rev-up. But if the only difference is a higher redline and a little more power then it should do the same thing on my car. So really what can be so different to cause this?

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post #5 of 52 Old 02-09-2009, 08:04 PM
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Originally Posted by krnmasta View Post
rev-up motors high little bit higher red line, i believe 7k and 298 hp. non rev-up motors have red line @ 6.6k and 280 hp but non rev-up motors have higher torque. so.... i think it's even. real difference is the interior. 04 have brembo on 6mt and rev ups have better quality interior. also rev ups have sports front bumper and 19" wheels.
all stuff about the car not the engine




I think one of the major differences is the exhaust cam control for the rev-up engines, prior engines were intake only...rev-up has both intake and exhaust
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post #6 of 52 Old 02-09-2009, 08:21 PM
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Originally Posted by spdcrz View Post
But why do they have more hp and higher redline?

For example, I was looking at getting the mrev manifold and was told it is not worth it bc I have a non rev-up. But if the only difference is a higher redline and a little more power then it should do the same thing on my car. So really what can be so different to cause this?
Hp numbers sell cars. Torque gets stuff going.

Keep in mind there were some other things done to the 03/04 engines (exhaust valve timing) to get better breathing up top to get the hp numbers.

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post #7 of 52 Old 02-09-2009, 08:26 PM
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The 298 hp motor has a different intake plenum and different cams. I believe that the short block is essentially the same in regards to stroke and displacement. The 6mt has the tighter gear ratio that would benefit from keeping the car at higher rpm's whereas the 5at would benefit from the lower torque.

There is the rev-up oil consumption as well. Ironically, the rev-up oil consumption issues seem to correlate with driving the manual as how it supposedly was designed to be driven in the higher rpms.

The MREV2 from motordyne is evidently a modified intake plenum from a 280 hp motor. When I installed the mod, I noticed subtle changes between the plenums. I believe the MREV2 was a good mod for me in that I don't take my car to redline often so the decrease at the top end wasn't an issue for me.

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post #8 of 52 Old 02-09-2009, 09:40 PM
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THREAD JACK.....what are some ways to raise the Redline on the VQ35DE?...i know some ppl with the RB26DETT can get 10k redline lol

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post #9 of 52 Old 02-09-2009, 09:45 PM
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valve springs, strengthen the internals, new cams

piston speeds are one of the main issues at those RPM's...notice that most high RPM motors have a rather short stroke to keep the piston speed down.
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post #10 of 52 Old 02-09-2009, 10:22 PM
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valve springs, strengthen the internals, new cams

piston speeds are one of the main issues at those RPM's...notice that most high RPM motors have a rather short stroke to keep the piston speed down.
i see...just the higher redline would really let this car loose....wonder why even the GTR has such a low RL... even a civic SI out RL a GTR lol

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post #11 of 52 Old 02-09-2009, 11:02 PM
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no need to string out a stock motor from the factory, they have to warranty that thing. the faster it spins the faster stuff breaks. tuners will take motors that high but durability is not at the top of their list.

most any car motor (gas not diesel) can be made to spin to 10k

I doubt a higher redline would help in stock trim, the dyno curves are falling well before 10k...any gains to be made up there would kill the power where it is needed the most, the bottom end...it's all about power under the curve
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post #12 of 52 Old 02-09-2009, 11:08 PM
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I understand what ur saying maybe im just an IDIOT haha lol so a 8k RL wouldnt help with acceleration or free up any ponies?? ...so what ur saying is the VQ's weakness is low end power??

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post #13 of 52 Old 02-09-2009, 11:18 PM
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I'm saying a motor that has that high end power will be weak at low end...
2-strokes are a perfect example. Very high hp at a zillion rpm but come off of that sweet spot and you might as well have some hamsters on a wheel in there.
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post #14 of 52 Old 02-09-2009, 11:20 PM
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VQ does lack in the torque department in the low end, the non-revup has a higher torque rating than the revup. the revup has a higher hp rating than the non-revup...
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post #15 of 52 Old 02-09-2009, 11:29 PM
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VQ does lack in the torque department in the low end, the non-revup has a higher torque rating than the revup. the revup has a higher hp rating than the non-revup...
how didnt Nissan keep the original TQ numbers while also improve upon HP??

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