smokinzx14
Needs a life
Posts: 10197
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posted October 14, 2007 08:21 AM
Track Test U4 Vs U4.2
I know some of you have asked this question about U4 Vs U4.2 in our zx14s ....I have no clue how it works in other bikes but in the zx14 with Brocks track map and a Smeg it works great ....Testing U4 netted an Avg of 5.74 @ 125 and the U4.2 run a Avg of 5.72 @ 125 ......
Some have stated it will need remapping to get the same power but i found no Difference in power with the same map ...If you are running a Brocks track map just pour it in and go racing ... NOTE : Some gains may be possible with custom mapping.. Smokin.....
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Smokin Performance Cycles..
Tampa Bay , FL .. Brocks Performance Dealer ..
Gen 2 ZX14R Best ET 8.43 , Best MPH 164.95
  
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bigdtd
Needs a job
Interceptors
Posts: 4209
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posted October 14, 2007 08:51 AM
good info, i use his track and maxton maps with pump gas and they work well
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Wheelie
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Old Man
Posts: 6902
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posted October 14, 2007 08:53 AM
no gain in mph. wee
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smokinzx14
Needs a life
Posts: 10197
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posted October 14, 2007 02:27 PM
quote:
no gain in mph. wee
I wasn't trying to go faster with the switch in fuels ..But i didn't want to go slower with the switch of fuels .. The reason for the switch was not to have to drain the fuel after every race ....Smokin..
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Smokin Performance Cycles..
Tampa Bay , FL .. Brocks Performance Dealer ..
Gen 2 ZX14R Best ET 8.43 , Best MPH 164.95
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iflyems
Expert Class
Posts: 233
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posted October 14, 2007 02:34 PM
Would you just quit dicking around and get blown 
Turbo's the only way to go 
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1BADZX12R
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posted October 14, 2007 03:16 PM
is there a differance
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Wheelie
Needs a life
Old Man
Posts: 6902
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posted October 14, 2007 05:04 PM
quote:
quote:
no gain in mph. wee
I wasn't trying to go faster with the switch in fuels ..But i didn't want to go slower with the switch of fuels .. The reason for the switch was not to have to drain the fuel after every race ....Smokin..
is vp doing away with the u4? wee
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CrotchRocket
Moderator
Bracket Racing with Betsy
Posts: 8038
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posted October 14, 2007 05:49 PM
 Edited By: CrotchRocket on 14 Oct 2007 18:51
I dont mean to Jack your post Smokin, but yesterday I ran 5.96 @ 124 in the 1/8 and 9.21 @ 154 in the 1/4 with mr9 without a power commander, stock airfilters,and an Akrapovic with ol' reliable @ 61inch wheelbase...
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Jason Miller StreetBike Seminars
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mark524
Expert Class
Posts: 297
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posted October 14, 2007 05:51 PM
I tested U4 vs. U2 this weekend. There was no difference. U2 is around 100 octane, I can run just as good on motor, then just change the map and spray with it. U2 is also $10 cheaper.
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Halvefast
Zone Head
Posts: 806
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posted October 15, 2007 03:46 AM
quote:
I tested U4 vs. U2 this weekend. There was no difference. U2 is around 100 octane, I can run just as good on motor, then just change the map and spray with it. U2 is also $10 cheaper.
+1 I too use U2, ran it all weekend without a problem at the mile.
Now if they would only make a U2.2 so I could leave it in the tank life would be good
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ECTA Ohio Mile 195.132mph
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entropy
Moderator
Posts: 8671
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posted October 15, 2007 04:53 AM
I'm looking forward to track results of VP Q16.
anyone, anyone? Buehller? Buehller?
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Halvefast
Zone Head
Posts: 806
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posted October 15, 2007 05:04 AM
Q16 looks like a great fuel for everday racer with massive amounts of compression, no wonder why you are curious 
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Texas Mile 200.256mph - Oct. 2007 (Update 202.577mph Oct 2008) NOS assisted
ECTA Ohio Mile 195.132mph
TexasMile 2012 199.9 mph all motor!
Streetriders Shootout 2008 series Pro/ET Champ!
Streetriders Shootout 2007 Series Pro/ET Runner-up!
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CrotchRocket
Moderator
Bracket Racing with Betsy
Posts: 8038
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posted October 15, 2007 07:19 PM
Karl with your motor, I would use mrxo1 on just motor...motor and nitrous then i would use c16...Seems to me that with the q16, there would be too much oxygen???
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entropy
Moderator
Posts: 8671
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posted October 15, 2007 11:06 PM
mrx01 and U2 both seem to work with this motor but q16's higher octane is attractive. Just wondering if anyone has actually tried a pail????
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stu64
Zone Head
Posts: 548
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posted October 16, 2007 04:25 PM
what does a 5 gal. pail of U4.2 cost?
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Shane661
Needs a life
Posts: 11494
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posted February 15, 2009 07:09 AM
Edited By: Shane661 on 15 Feb 2009 15:10
quote:
I dont mean to Jack your post Smokin, but yesterday I ran 5.96 @ 124 in the 1/8 and 9.21 @ 154 in the 1/4 with mr9 without a power commander, stock airfilters,and an Akrapovic with ol' reliable @ 61inch wheelbase...
I'm resurrecting this thread because that is flat out hauling on a 61" 12R with no PC3!!!!
And I know Rick was footshifting too....
Great power out of 1200cc....and great riding. 
Shane
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NOX
Needs a job
PMRA / TMRC Super Street 4022
Posts: 3745
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posted February 23, 2009 11:28 PM
I too ran 124 with no pc, on u4 several years ago....., brock made me send him the slip, he did not believe it......
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gilberjj
Needs a job
Friend of Fast
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posted February 24, 2009 12:13 AM
So which is going to be cheapest and best?
u4
u4.2
mr9
u2
I will not be spraying, but I'm going to the track on sunday (opening day for the race season). I don't care if the fuel isn't supposed to be left in the tank or not because I ride my bike quite a bit, and it wouldn't even last 2 days.
Thanks
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Bawls
Needs a job
re-learning to ride
Posts: 2701
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posted February 24, 2009 05:16 AM
if you're not spraying and don't have a map for it, will it really be necessary to run race gas? seems to me that you should be able to reach your goals with pump gas. take the money that you were going to spend on race gas and put it towards a strap and lowering bones. you'll be much more happy with the results.
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Shane661
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posted February 24, 2009 05:30 AM
Edited By: Shane661 on 24 Feb 2009 13:32
The fuel we are talking about is oxygenated...it will make more power than regular fuel, if mapped properly.
It adds oxygen, requiring more fuel, which then leads to more power. Not so different from nitrous...it's just a matter of how much and through what means you are adding to oxygen. You'll notice that even in Brock's case, the MR9 brings hp, and mph.
In my case, I am going to try some oxygenated fuel. I already have all of the other mods.
Shane
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1badzx12r
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posted February 24, 2009 06:43 AM
quote:
is there a differance
hey hey hey who's this fukker ..
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gilberjj
Needs a job
Friend of Fast
Posts: 3196
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posted February 24, 2009 07:35 AM
I have bones, straps, pipe, filter, pciii, 16t, and flies pulled. I think fuel will be the next thing to try.
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