Anyone running stock motor with out the AC belt on?
#1
Anyone running stock motor with out the AC belt on?
I was looking but so far have not found a thread dealing with this. Less i am blind.
I wanted to see if anyone has dyno'd a stock Z with out the use of the AC belt at all. Just wanted to see if there was any if slight gains. I have been thinking about taking the belt off for a while, but then also thought that i do not want to have the AC freeze up with no use as well. So im just wondering.
reason is i really dislike when the damn AC pops on when i turn the air on. I did pull the fuse, but then again if i never use it why shoul di have to waste some weight spinning it. Figured i could help the engine spin a lot more free this way.
I do have the light weight pulley's as well.
I wanted to see if anyone has dyno'd a stock Z with out the use of the AC belt at all. Just wanted to see if there was any if slight gains. I have been thinking about taking the belt off for a while, but then also thought that i do not want to have the AC freeze up with no use as well. So im just wondering.
reason is i really dislike when the damn AC pops on when i turn the air on. I did pull the fuse, but then again if i never use it why shoul di have to waste some weight spinning it. Figured i could help the engine spin a lot more free this way.
I do have the light weight pulley's as well.
#4
im not asking if it gets hp gains at the wheels. im talking to the crank. because if you eliminate the ac you free up weight put on by spinning the ac. so although it will be extremely minimal say maybe 2 hp just for a quicker response purpose. Not asking because i believe i am going to go faster.
Trending Topics
#9
so the benefit of putting on a light pulley is saying that it is only freeing up distributed weight for a free spin. say less weight to rotate does not effect any aspect?
that is all i am saying that the engine will work slightly less harder is all.
with the ac on the z does have a drag feel that is very noticeable. Kind of the reason i disliked when it went on when i didn't notice.
but that is with any engine for that matter. all im asking is that completely removed the engine it self may feel a tad more responsive in the sense that your freeing up the crank from spinning both belts and all the spin is just going to the one. cause no matter what the crank is sill trying to spin the ac belt regardless. which is adding a lil pressure.
i might do a before and after just to see. maybe something will come out of it.
that is all i am saying that the engine will work slightly less harder is all.
with the ac on the z does have a drag feel that is very noticeable. Kind of the reason i disliked when it went on when i didn't notice.
but that is with any engine for that matter. all im asking is that completely removed the engine it self may feel a tad more responsive in the sense that your freeing up the crank from spinning both belts and all the spin is just going to the one. cause no matter what the crank is sill trying to spin the ac belt regardless. which is adding a lil pressure.
i might do a before and after just to see. maybe something will come out of it.
Last edited by Dr. Venture; 01-27-2010 at 01:20 PM.
#12
350Z-holic
iTrader: (46)
What kind of racing do you instruct? Did you ever race or track your own 350, and do you race/track/instruct currently in your 240? I ask because I've never seen your name before, Vitaly Ivanchenko, in the various events I've attended, so maybe there is some underground I don't know about which could give access to even more - otherwise private - events?
#13
Need for Speed perhaps?
ok so then a dyno probably will not show any gains or loss.
so then all it will probably do is just allow the engine to sweat a lil less when whipping it around town if that at all.
Last edited by Dr. Venture; 01-27-2010 at 01:32 PM.
#14
Registered User
Join Date: Jun 2008
Location: concka
Posts: 124
Likes: 0
Received 0 Likes
on
0 Posts
What kind of racing do you instruct? Did you ever race or track your own 350, and do you race/track/instruct currently in your 240? I ask because I've never seen your name before, Vitaly Ivanchenko, in the various events I've attended, so maybe there is some underground I don't know about which could give access to even more - otherwise private - events?
#15
Registered User
Join Date: Nov 2009
Location: Stockton,CA
Posts: 166
Likes: 0
Received 0 Likes
on
0 Posts
^^ who hasn't heard of scott the forum. wow it just got personal
#16
Former Sponsor
iTrader: (564)
Join Date: Feb 2003
Location: Long Island, New York
Posts: 19,266
Likes: 0
Received 5 Likes
on
5 Posts
the a/c belt weighs a few ounces
the a/c pulley weighs ~ 1 lb
Neither one are hardly taxing the crank whatsoever. The reason the engine can feel more responsive with a lightweight crank pulley is that you're reducing anywhere from 60-80% weight from a piece that has fairly substantial weight in the first place. Just as if you remove weight from the flywheel.
the a/c pulley weighs ~ 1 lb
Neither one are hardly taxing the crank whatsoever. The reason the engine can feel more responsive with a lightweight crank pulley is that you're reducing anywhere from 60-80% weight from a piece that has fairly substantial weight in the first place. Just as if you remove weight from the flywheel.
#17
350Z-holic
iTrader: (46)
So what DO you race or track then, something else besides your 240SX or your 350 before you sold it? I don't track a street car either!
https://my350z.com/forum/8006425-post59.html
BTW, we should do that soon!
Last edited by scotts300; 01-27-2010 at 02:55 PM.
#18
350Z-holic
iTrader: (46)
the a/c belt weighs a few ounces
the a/c pulley weighs ~ 1 lb
Neither one are hardly taxing the crank whatsoever. The reason the engine can feel more responsive with a lightweight crank pulley is that you're reducing anywhere from 60-80% weight from a piece that has fairly substantial weight in the first place. Just as if you remove weight from the flywheel.
the a/c pulley weighs ~ 1 lb
Neither one are hardly taxing the crank whatsoever. The reason the engine can feel more responsive with a lightweight crank pulley is that you're reducing anywhere from 60-80% weight from a piece that has fairly substantial weight in the first place. Just as if you remove weight from the flywheel.
If he removes all the AC components though, he will free up about 35# from the front of the car, at the expense of AC of course.
https://my350z.com/forum/7809508-post672.html if you're curious. . .