Page 1 of 2
2 Wheel Dyno
Posted: Sun Mar 12, 2006 9:32 pm
by Splinter
Unfortunally, the only 4 wheel dyno is quite a trek from here. The shop where Im going to be doing my build only has a 2-wheel, so Im wondering if there's any *safe* way to dyno our cars on a 2wd dyno?
Disconnect the driveshaft?
FWD fuse? (apparently this puts strain on the diff?)
Disconnect the axels?
I know its not going to be accurate, but its mostly to see if the car is running well, and for tuning. I'll take it up to the 4WD place once the basic tuning is done.
Posted: Sun Mar 12, 2006 9:58 pm
by Manarius
FWD fuse...but you're not supposed to be driving the car hard on FWD.
Posted: Sun Mar 12, 2006 10:01 pm
by Splinter
Yea I dont want to do anything thats going to damage the car
Posted: Mon Mar 13, 2006 1:31 am
by LaureltheQueen
then don't put it on a 2 wheel dyno.
Posted: Mon Mar 13, 2006 1:51 am
by Splinter
Well that's my question, Laurel. Is there any way to do it without damaging the car. I don't think I could have stated it much more clearly.
If the answer is no, then it's no.
Posted: Mon Mar 13, 2006 3:18 am
by Manarius
Splinter wrote:If the answer is no, then it's no.
Well then simply, the answer is no. You have a AWD car, and it wasn't meant to be tested on a 2WD dyno.
Besides, why waste the WHP of those other two wheels. And...I don't know if I'd want to use a dyno as a method of tuning. There have to be better methods.
Posted: Mon Mar 13, 2006 3:25 am
by Splinter
This is why I'd waste the extra WHP
$200-$300 in travel expense alone.
Looks like for tuning, it's gonna be a lot of highway pulls at 4am
Posted: Mon Mar 13, 2006 5:07 am
by Richard
13 hours? F^ that! Get a g-tech and be happy with that.
Posted: Mon Mar 13, 2006 5:27 am
by Splinter
Well the Autronics SMC that Im putting on will give live horsepower/torque ratings, but the initial setup would really go a lot smoother in a controlled environment, vs flying down the highway at 60mph trying to look at readings on an 8" screen
Posted: Mon Mar 13, 2006 7:09 am
by 555BCTurbo
How the HELL does it take 13 hours to go 211 km??!?!?!?!
btw...get a wideband O2...it is pretty much vital for tuning
Posted: Mon Mar 13, 2006 7:22 am
by jnorion
How about jackstands on the dyno?
Posted: Mon Mar 13, 2006 7:42 am
by Splinter
555BCTurbo wrote:How the HELL does it take 13 hours to go 211 km??!?!?!?!
There's an ocean, a mountain range and a major metropolitan center in the way.
Posted: Mon Mar 13, 2006 2:01 pm
by legacy92ej22t
A good street tune is better then a dyno tune anyways.
Posted: Mon Mar 13, 2006 7:28 pm
by Legacy777
I know some people that have inserted the FWD fuse and dyno'd the car on a 2-wheel dyno.
I wouldn't recommend you do that....but it has been done.
Posted: Mon Mar 13, 2006 7:48 pm
by DLC
Swap in a 5MT FWD tranny
Posted: Tue Mar 14, 2006 2:19 am
by wiscon_mark
MCarp22 on Nasioc did the FWD fuse thingy...on a mustang dyno...my heart is too sad to give you the results
Posted: Tue Mar 14, 2006 8:20 am
by Kelly
legacy92ej22t wrote:A good street tune is better then a dyno tune anyways.
ditto.
Posted: Tue Mar 14, 2006 9:17 am
by Splinter
rallitektech wrote:legacy92ej22t wrote:A good street tune is better then a dyno tune anyways.
ditto.
Kelly, you were running an SMC, right?
Can you give me a run down on what components you were using with it, and a copy of your map?
Posted: Thu Mar 16, 2006 4:29 pm
by Penguin
I am with DLC a 5speed 2wd swap would only take like 2 or 3 hours
and they are cheeeeep so slam the gears and not care
Posted: Thu Mar 16, 2006 4:42 pm
by BAC5.2
DLC wrote:Swap in a 5MT FWD tranny
We just completed a 5-speed, Front-wheel-drive, straight cut dogbox.
Posted: Fri Mar 17, 2006 12:17 am
by wiscon_mark
seriously, who wants FWD?
Posted: Fri Mar 17, 2006 2:10 am
by Splinter
wiscon_mark wrote:seriously, who wants FWD?
+1
I'd rather spend a day driving out to the 4WD than switch to a FWD tranny
Posted: Fri Mar 17, 2006 3:45 pm
by Penguin
correct me if i am wrong but....
wouldn't you get a higher WHEEL horsepower number?
and the words "bake show" come to mind. you could just melt those poor tires.
AND want to drop about 200 pounds go from AWDauto to FWD5speed
Posted: Fri Mar 17, 2006 3:47 pm
by wiscon_mark
no, you probably wouldn't get a higher readng...at least MCarp22 over on Nasioc didn't...82 whp on the dyno with the fuse in. I just don't think the fuse thing is meant to transfer all the power to the front diff, it's really not made for normal use.
Posted: Sat Mar 18, 2006 7:16 am
by Penguin
I agree,... if you put a fuse in the FWD plug in your AWD engine bay you will get NO GAIN if anything you get LESS power
i think mark misunderstood me,
If you have a 22t AWD AUTO and put it on an allwheel dyno you get "X" as you WHEEL horsepower number.
If you have a 22t FWD 5 speed and put it on a 2 wheel dyno you get a number GREATER then "X" as you WHEEL horsepower number
a?