Photos on engine rebuild (N/A)
#142
Registered User
Thread Starter
iTrader: (2)
Join Date: Jan 2003
Location: Australia
Posts: 1,647
Likes: 0
Received 0 Likes
on
0 Posts
No problem... I am also learning my way through too... really need to thank a lot of people on this forum helping me out with questions and parts... It is always good to get feedbacks too after I share my experiences with the mods, then more improvements can be made
cheers,
richie
cheers,
richie
#146
Registered User
Thread Starter
iTrader: (2)
Join Date: Jan 2003
Location: Australia
Posts: 1,647
Likes: 0
Received 0 Likes
on
0 Posts
Thanks guys... now... need some feedback on the light weight pulley...
I used to run UR light weight crank pulley until the machine shop lost it during balancing that piece again... so I got the standard pulley balanced instead and am using the heavy stock crank pulley now.
Machine shop is going to either get another UR crank pulley for me or give me the cash back instead... I heard from many people saying that using underdriven pulley seems to be a good idea for higher rpm (up to 8000rpm) since that will not overload the rest of the working parts around the engine... I don't mind staying with stock pulley because I know I will not be able to gain much from the UR anyway at this stage... I just want to know if it is true that using under-driven pulley will actually help reducing the loads (on engine or any other parts) when the engine is running up to 8000rpm?! Or it will do more damages?
Thanks guys!
cheers,
richie
I used to run UR light weight crank pulley until the machine shop lost it during balancing that piece again... so I got the standard pulley balanced instead and am using the heavy stock crank pulley now.
Machine shop is going to either get another UR crank pulley for me or give me the cash back instead... I heard from many people saying that using underdriven pulley seems to be a good idea for higher rpm (up to 8000rpm) since that will not overload the rest of the working parts around the engine... I don't mind staying with stock pulley because I know I will not be able to gain much from the UR anyway at this stage... I just want to know if it is true that using under-driven pulley will actually help reducing the loads (on engine or any other parts) when the engine is running up to 8000rpm?! Or it will do more damages?
Thanks guys!
cheers,
richie
#147
New Member
And I thought my Z sounded good at 7100rm...lol. Wow Richie that sounded soooo swet man. I can only imagine the rush you get revving her to 8k rpm. Man that was the best sounding Z I have ever heard. Congrats on the build and we NA guys will be definatley keeping an eye on your Z. Beautiful car man. I love it. I couldn't agree with you more.... thats how the 350z should be from the factory. Lol.
#148
MOTORDYNE-MY350Z SPONSOR
iTrader: (53)
Originally Posted by Z350Lover
yway at this stage... I just want to know if it is true that using under-driven pulley will actually help reducing the loads (on engine or any other parts) when the engine is running up to 8000rpm?! Or it will do more damages?
richie
richie
With an engine like yours, I suggest staying far away from the light weight, undamped pullies. You need a fluid damper pully.
It help increase the longevity of your engine by damping out crank harmonics. They are specially made for high reving race applications. And your engine certaintly qualifies for that definition.
There are many on the market. Check into them. They cost several times more than a standard pully, but in your case it would be a good investment.
Tony
#149
Registered User
Thread Starter
iTrader: (2)
Join Date: Jan 2003
Location: Australia
Posts: 1,647
Likes: 0
Received 0 Likes
on
0 Posts
thanks Tony... do you have any suggestion into which brand that I should look into? This is my first time to hear this type of pulley (fluid damper pulley) though... I will definitely want to learn more about it and if you can be able to share your expertise with all of us, it will be greatly appreciated!!
thanks in advance once again!
cheers,
richie
thanks in advance once again!
cheers,
richie
#151
Originally Posted by rednezz
Couldn't he just get a light weight pulley and balance with the rest of the engine? Also, I thought fluid dampers were for American engines because they are not balanced internally?
Mega HP cars with sky high rpms like highly tuned RB26 etc do run aftermarket fluid dampers to cancel out vibtation like Tony mentioned. A fully balanced motor will still create vibration at really high rpm. I dont know any companies who make one for the 350z.
Last edited by mchapman; 02-08-2006 at 12:52 PM.
#152
New Member
iTrader: (2)
Originally Posted by rednezz
Couldn't he just get a light weight pulley and balance with the rest of the engine? Also, I thought fluid dampers were for American engines because they are not balanced internally?
Will
#154
Registered User
Thread Starter
iTrader: (2)
Join Date: Jan 2003
Location: Australia
Posts: 1,647
Likes: 0
Received 0 Likes
on
0 Posts
Resolute,
Thanks for that... really appreciate for the explanations! That surely clears things up for me!
I found a company called Fluidampr that offers fluid harmonic balancers... but they are like 7.22 ponds which is around 1 pond heavier than the stock pulley though...
Here is the link
http://www.sallee-chevrolet.com/fram...fluidampr.html
Do you think that's the one that I should look into?
cheers,
richie
Thanks for that... really appreciate for the explanations! That surely clears things up for me!
I found a company called Fluidampr that offers fluid harmonic balancers... but they are like 7.22 ponds which is around 1 pond heavier than the stock pulley though...
Here is the link
http://www.sallee-chevrolet.com/fram...fluidampr.html
Do you think that's the one that I should look into?
cheers,
richie
#157
Ritchi
Dont use an underdrive pully on your motor, they are not a harmonic balancer.
No problems for most people that run them but with your high rev application you need the protection they were designed for, not the miniscule HP gain made by underdriving.
The water pump is driven by the timing chain so you cant do any thing about that.
The Hitachi alternator is good for 8k.
The power steerpump will be OK. It will o,heat on the track if you do a lot of laps but with stock revs they do the same.
The problem is the Air con compressor ( they dont like high revs) but you have the solution with your MoTeC.
Get it to trigger a relay to cut power to the Air con clutch @ say 6K just in case you forget to turn it off in the heat of the battle.
Dont think it can't happen. When the adrenalin starts to pump the brain does some silly things.
Dont use an underdrive pully on your motor, they are not a harmonic balancer.
No problems for most people that run them but with your high rev application you need the protection they were designed for, not the miniscule HP gain made by underdriving.
The water pump is driven by the timing chain so you cant do any thing about that.
The Hitachi alternator is good for 8k.
The power steerpump will be OK. It will o,heat on the track if you do a lot of laps but with stock revs they do the same.
The problem is the Air con compressor ( they dont like high revs) but you have the solution with your MoTeC.
Get it to trigger a relay to cut power to the Air con clutch @ say 6K just in case you forget to turn it off in the heat of the battle.
Dont think it can't happen. When the adrenalin starts to pump the brain does some silly things.
#158
Registered User
Thread Starter
iTrader: (2)
Join Date: Jan 2003
Location: Australia
Posts: 1,647
Likes: 0
Received 0 Likes
on
0 Posts
Originally Posted by Nathan
Ritchi
Dont use an underdrive pully on your motor, they are not a harmonic balancer.
No problems for most people that run them but with your high rev application you need the protection they were designed for, not the miniscule HP gain made by underdriving.
The water pump is driven by the timing chain so you cant do any thing about that.
The Hitachi alternator is good for 8k.
The power steerpump will be OK. It will o,heat on the track if you do a lot of laps but with stock revs they do the same.
The problem is the Air con compressor ( they dont like high revs) but you have the solution with your MoTeC.
Get it to trigger a relay to cut power to the Air con clutch @ say 6K just in case you forget to turn it off in the heat of the battle.
Dont think it can't happen. When the adrenalin starts to pump the brain does some silly things.
Dont use an underdrive pully on your motor, they are not a harmonic balancer.
No problems for most people that run them but with your high rev application you need the protection they were designed for, not the miniscule HP gain made by underdriving.
The water pump is driven by the timing chain so you cant do any thing about that.
The Hitachi alternator is good for 8k.
The power steerpump will be OK. It will o,heat on the track if you do a lot of laps but with stock revs they do the same.
The problem is the Air con compressor ( they dont like high revs) but you have the solution with your MoTeC.
Get it to trigger a relay to cut power to the Air con clutch @ say 6K just in case you forget to turn it off in the heat of the battle.
Dont think it can't happen. When the adrenalin starts to pump the brain does some silly things.
cheers,
richie
#159
MOTORDYNE-MY350Z SPONSOR
iTrader: (53)
Originally Posted by Z350Lover
Resolute,
Thanks for that... really appreciate for the explanations! That surely clears things up for me!
I found a company called Fluidampr that offers fluid harmonic balancers... but they are like 7.22 ponds which is around 1 pond heavier than the stock pulley though...
Here is the link
http://www.sallee-chevrolet.com/fram...fluidampr.html
Do you think that's the one that I should look into?
cheers,
richie
Thanks for that... really appreciate for the explanations! That surely clears things up for me!
I found a company called Fluidampr that offers fluid harmonic balancers... but they are like 7.22 ponds which is around 1 pond heavier than the stock pulley though...
Here is the link
http://www.sallee-chevrolet.com/fram...fluidampr.html
Do you think that's the one that I should look into?
cheers,
richie
That's the type of damper you want. Or even Fluidyne! And I know they make one to fit the VQ crank. GeePasta has one on his G35.
If I remember correctly, I think Performance Nissan might carry one too... but don't quote me on that one.
And yes, it will typically be a pound or two heavier than stock, but when you really need to damp out the harmonics and resonances, its the only way to go. And I'm sure your super revup engine could benefit from it.
Tony
#160
Registered User
Thread Starter
iTrader: (2)
Join Date: Jan 2003
Location: Australia
Posts: 1,647
Likes: 0
Received 0 Likes
on
0 Posts
Tony... thanks for the suggestion... I have just ordered a fluid damper from Summit Racing... and the vibration balancer isn't that much heavier than the stock one... it is around 400 grams more only... I should get that soon by the end of this week...
Here is the link to that product if anyone is interested in purchasing one...
http://store.summitracing.com/partde...6&autoview=sku
cheers,
richie
Here is the link to that product if anyone is interested in purchasing one...
http://store.summitracing.com/partde...6&autoview=sku
cheers,
richie