Are Any M56 Owners Interested In Lightweight Pulleys

[DredM56]

Hey guys in an effort to get some more parts available for our cars I contacted a few companies about making some stuff for our cars.

Unorthodox Racing has got back to me. They will make any pulley we want with an order of at least 6 and require a 50% deposit. Like I said anything is an option. To me the crank pulley is the only one worth it unless you're very serious about getting everything you can out of it. Most of them only save ounces and the crank is several pounds.

A lightweight pulley is guaranteed power across the entire rpm range. On the G/Z people gain between .1-.2 in the 1/4 mile consistently. .2 is usually on the underdrive one not just lightened. A tenth is equal to a car length and about 10hp.

It will be about 300 for the crank pulley with 6-14 and 15-29 goes down 40 and 30+ another 30

I can post a rundown of everything else when I'm on a actual computer

[Ilya]

Maybe in the future, but not directly at this time; and it would only be the standard diameter one, not an underdrive.

[DredM56]

Yes standard diameter I could ask about underdrive. Wasn't sure if it was a good idea since this car has so much electronics but the G seems to be fine with it.

[Monster56]

Definitely would b interested, however I never like to b the guinea pig. I would have to see how the lightweight pulley affected engine longevity especially with a vehicle that has the amount of electronics and sophistication as the M. I know that when I had my subie, there where many companies that made light weight crank pulleys, BUT there was a fine line with the how light the pulley was and engine reliability. But, I'm sure I'm like most others who would love to have more performance options for their ride!

[ArmedAviator]

I've done quality lighter underdrive pulleys (Steeda) installs on two previous non-Nissan cars before. Both times, the difference in engine performance was negligible in seat-of-the-pants and 1/8 and 1/4 mile drag times. The only thing it accomplished was dim my interior and head lights when at idle - and I even bumped up the idle by 100 RPM in my tune.

With the electronics draw on these Ms, I wouldn't risk any underdrives. Lighter weight material may help in some way, but I can't imagine it'd be measurable at all. Certainly not 0.1 seconds in the 1/4 mile. Tire pressure would have more effect than the loss of a few pounds - even a spinning mass. on the engine.

[DredM56]

http://www.myg37.com/forums/motorsports ... 37-21.html

[DFW2011M56S]

Light weight underdrive pulleys can definately gain a couple of tenths or more! I had one on my 5.7 Hemi Ram and have a set on my Express van. Noticeable improvement in throttle response and mileage as well. Both setups had smaller pulleys for the alternator to retain full charging capability. That being said keep in mind if our pulley is like a Titan it has a harmonic dampner built into it. The Titan guys that tried to run without harmonic dampening were breaking flexplates left and right. Also the A/C will not cool as well if you keep the stock idle rpm. On my Express I have a cam and stall converter in it and raised the idle RPM. With the engine idling 750 for the cam rather than the stock 575 it cools just as well and the A/C is still ice cold at idle. The Ram also had a cam and converter and raised idle. I have the idle raised 100 rpm on my M56 as well. Better charging, better a/c cooling at idle and quicker throttle response was the result. I really want to try a 3.7 torque converter if it will bolt up to our flexplate. I have a very low mileage 370Z converter at work in a trans that was bottemed out and the case cracked I am thinking of pirating for my M56.

[Ilya]

Light weight underdrive pulleys can definately gain a couple of tenths or more! I had one on my 5.7 Hemi Ram and have a set on my Express van. Noticeable improvement in throttle response and mileage as well. Both setups had smaller pulleys for the alternator to retain full charging capability. That being said keep in mind if our pulley is like a Titan it has a harmonic dampner built into it. The Titan guys that tried to run without harmonic dampening were breaking flexplates left and right. Also the A/C will not cool as well if you keep the stock idle rpm. On my Express I have a cam and stall converter in it and raised the idle RPM. With the engine idling 750 for the cam rather than the stock 575 it cools just as well and the A/C is still ice cold at idle. The Ram also had a cam and converter and raised idle. I have the idle raised 100 rpm on my M56 as well. Better charging, better a/c cooling at idle and quicker throttle response was the result. I really want to try a 3.7 torque converter if it will bolt up to our flexplate. I have a very low mileage 370Z converter at work in a trans that was bottemed out and the case cracked I am thinking of pirating for my M56.

So on your M56 you have the RPM up 100 (UpRev?) and the 2* timing advance?

[DFW2011M56S]

Light weight underdrive pulleys can definately gain a couple of tenths or more! I had one on my 5.7 Hemi Ram and have a set on my Express van. Noticeable improvement in throttle response and mileage as well. Both setups had smaller pulleys for the alternator to retain full charging capability. That being said keep in mind if our pulley is like a Titan it has a harmonic dampner built into it. The Titan guys that tried to run without harmonic dampening were breaking flexplates left and right. Also the A/C will not cool as well if you keep the stock idle rpm. On my Express I have a cam and stall converter in it and raised the idle RPM. With the engine idling 750 for the cam rather than the stock 575 it cools just as well and the A/C is still ice cold at idle. The Ram also had a cam and converter and raised idle. I have the idle raised 100 rpm on my M56 as well. Better charging, better a/c cooling at idle and quicker throttle response was the result. I really want to try a 3.7 torque converter if it will bolt up to our flexplate. I have a very low mileage 370Z converter at work in a trans that was bottemed out and the case cracked I am thinking of pirating for my M56.

So on your M56 you have the RPM up 100 (UpRev?) and the 2* timing advance?

It can be done with Consult 3 but I did mine with Bullydog. 100 rpm up and 4° advanced over their 93 octane tune. Its what it liked best.

Still reluctant to pay Uprev another $200 on top of the $700 I have already paid for my Tuner cable and Tuning suite.

[Ilya]

So on your M56 you have the RPM up 100 (UpRev?) and the 2* timing advance?

It can be done with Consult 3 but I did mine with Bullydog. 100 rpm up and 4° advanced over their 93 octane tune. Its what it liked best.

Still reluctant to pay Uprev another $200 on top of the $700 I have already paid for my Tuner cable and Tuning suite.

Interesting, never heard of anyone doing a 4* advance...always hear of a 2*. So you'd recommend (regardless of tuner) those settings?

[DFW2011M56S]

It can be done with Consult 3 but I did mine with Bullydog. 100 rpm up and 4° advanced over their 93 octane tune. Its what it liked best.

Still reluctant to pay Uprev another $200 on top of the $700 I have already paid for my Tuner cable and Tuning suite.

Interesting, never heard of anyone doing a 4* advance...always hear of a 2*. So you'd recommend (regardless of tuner) those settings?

The only way you can do a 4° is Bullydog. With Uprev you can map the timing however you want for best results, that is if they fixed tje problem Majestik was having with Uprev and timing adjustments.

You would just have to try various settings and see what works for you. If I wemt over +100 rpm you could feel the car really tugging at the brakes when coming to a stop. But it really helped with the off-idle hesitation to have a higher idle rpm.

[DredM56]

That kind of sucks if it does have a damper. I thought all Nissan engines were internally balanced.
I'll have to ask them if they make those style. I think they don't though. I'll try and get a picture or more info on our Stock one.