Spinning wheels on dyno
Thread Starter
Pit Crew
Joined: Sep 2013
Posts: 203
Likes: 3
From: Can
Spinning wheels on dyno
Hi everyone need some help please...
My sc300 is being Dyno at a shop and after 530whp the wheels spin on the Dyno and he cannot grip on the rollers to map on the computer, because of this they cannot get the true who of the sc300.
Has anyone else had this issue? If so could you please share what was done to correct the spinning the tires on the dyno?
I'm really disappointed this is happening.
Your help would be greatly appreciated.
My sc300 is being Dyno at a shop and after 530whp the wheels spin on the Dyno and he cannot grip on the rollers to map on the computer, because of this they cannot get the true who of the sc300.
Has anyone else had this issue? If so could you please share what was done to correct the spinning the tires on the dyno?
I'm really disappointed this is happening.
Your help would be greatly appreciated.
Thread Starter
Pit Crew
Joined: Sep 2013
Posts: 203
Likes: 3
From: Can
No drifting as of yet, but will be taking it to the track.
Hi Gerrb, the current tire size in the rear is 245/40R18.
This video is really cool and funny, but seems to work thank you I will tell the shop to put to bodies in the trunk.
Thank you
Put 2 decently heavy bodies in the trunk, that will do it
SP Built ProEFI 94mm 1600+whp 2JZ 240SX DYNO - YouTube
SP Built ProEFI 94mm 1600+whp 2JZ 240SX DYNO - YouTube
Thank you
Last edited by Idlefree; Feb 15, 2015 at 03:48 PM.
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Having people or weights on the trunk help keep the rear on dyno drums thus preventing wheel spin but not the right way in doing things in my opinion for that power level. I would understand if you are making above 800rwhp already .
Why ? You are not driving that car on the streets with people or always have something on the trunk . You will endanger yourself and others on the street if you can't control that car on the streets with your wheels spinning.
Get wider tires like with more meat and better brand/model like drag radials when you can. Power that you cannot put down on the street/road is useless . Having the right combination of wheel size, tire size and model will be your secret.
Why ? You are not driving that car on the streets with people or always have something on the trunk . You will endanger yourself and others on the street if you can't control that car on the streets with your wheels spinning.
Get wider tires like with more meat and better brand/model like drag radials when you can. Power that you cannot put down on the street/road is useless . Having the right combination of wheel size, tire size and model will be your secret.
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Thread Starter
Pit Crew
Joined: Sep 2013
Posts: 203
Likes: 3
From: Can
The shop has indicated it is also because it is cold, do you think this would make a difference.
Having people or weights on the trunk help keep the rear on dyno drums thus preventing wheel spin but not the right way in doing things in my opinion for that power level. I would understand if you are making above 800rwhp already .
Why ? You are not driving that car on the streets with people or always have something on the trunk . You will endanger yourself and others on the street if you can't control that car on the streets with your wheels spinning.
Get wider tires like with more meat and better brand/model like drag radials when you can. Power that you cannot put down on the street/road is useless . Having the right combination of wheel size, tire size and model will be your secret.
Why ? You are not driving that car on the streets with people or always have something on the trunk . You will endanger yourself and others on the street if you can't control that car on the streets with your wheels spinning.
Get wider tires like with more meat and better brand/model like drag radials when you can. Power that you cannot put down on the street/road is useless . Having the right combination of wheel size, tire size and model will be your secret.
2. The car will be programmed with 2 mappings, one for street driving and another for the track.
3. I believe you are right, I have to get wider tires and the right combination and or the right brand as well of tires, do you have any suggestions?
Thanks gerrb, apprieated
Thank dsouth, I will look into the r888's from toyo tires, what size tires are you using?
Rookie
Joined: Aug 2014
Posts: 63
Likes: 0
From: Illinois
Wheel spin on they dyno won't be the same as wheel spin on the street.. A dyno isn't a direct representation of street driving it's just a free rolling drum, however if its a dynojet you can load the roller to simulate driving on the street.
Having guys seat on the trunk and / or heavy weights/stuff on the trunk is really the only way shops/tuners can resort on when making well over 1000rwhp . Slick tires than can hold power to the ground are not permitted on dyno's because pieces or chunks/debris from the tires can mess up the dyno so tuners resort to weight in the trunk.
As for size, the wider you can fit and the more meat better. 275 will be good but wider better. If you look at high hp cars, they try to stufff in 325 or 295 at least in there. So choosing the right wheel with the right offset is the key. To have better meat on tires people go with 15" or 16" wheels but the biggest wheel size for me to have good meat on the rubber is 18" . When you go 19" wheel or bigger... you need to go low profile tires which are not really a good combination for high hp cars.
On the streets, speaking of my experience as dsouth mentioned R888 are good , I probably missed it , what ECU are you using ?
As for size, the wider you can fit and the more meat better. 275 will be good but wider better. If you look at high hp cars, they try to stufff in 325 or 295 at least in there. So choosing the right wheel with the right offset is the key. To have better meat on tires people go with 15" or 16" wheels but the biggest wheel size for me to have good meat on the rubber is 18" . When you go 19" wheel or bigger... you need to go low profile tires which are not really a good combination for high hp cars.
On the streets, speaking of my experience as dsouth mentioned R888 are good , I probably missed it , what ECU are you using ?
Thread Starter
Pit Crew
Joined: Sep 2013
Posts: 203
Likes: 3
From: Can
Having guys seat on the trunk and / or heavy weights/stuff on the trunk is really the only way shops/tuners can resort on when making well over 1000rwhp . Slick tires than can hold power to the ground are not permitted on dyno's because pieces or chunks/debris from the tires can mess up the dyno so tuners resort to weight in the trunk.
As for size, the wider you can fit and the more meat better. 275 will be good but wider better. If you look at high hp cars, they try to stufff in 325 or 295 at least in there. So choosing the right wheel with the right offset is the key. To have better meat on tires people go with 15" or 16" wheels but the biggest wheel size for me to have good meat on the rubber is 18" . When you go 19" wheel or bigger... you need to go low profile tires which are not really a good combination for high hp cars.
On the streets, speaking of my experience as dsouth mentioned R888 are good , I probably missed it , what ECU are you using ?
As for size, the wider you can fit and the more meat better. 275 will be good but wider better. If you look at high hp cars, they try to stufff in 325 or 295 at least in there. So choosing the right wheel with the right offset is the key. To have better meat on tires people go with 15" or 16" wheels but the biggest wheel size for me to have good meat on the rubber is 18" . When you go 19" wheel or bigger... you need to go low profile tires which are not really a good combination for high hp cars.
On the streets, speaking of my experience as dsouth mentioned R888 are good , I probably missed it , what ECU are you using ?
2. The ECU is an AEM ser 2
Thanks for the advise and help greatly appreciated
Rookie
Joined: Aug 2014
Posts: 63
Likes: 0
From: Illinois
Also it isn't optimal to run a dyno under 30* so you may need to wait till it gets warmer. My dyno room is heated and will get pretty warm while running cars on it just be sure to open the door enough to let the exhaust out and keep the doors closed to prevent all the heat out between runs