magzx12r
Expert Class
Posts: 252
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posted August 09, 2003 08:38 AM
Low Dyno #'s
I live in hot and humid Houston and had my '00 ZX-12R dynoed friday. It was a DJ250 with a tuning link, but the tuning link was not working. The best #'s I got were 167.1 SAE hp and 91.2 ft-lbs SAE Torque. I have an Akra pipe, K&N filters, PC-3, Muzzy ign advancer @ +4 deg, Bear Stacks, Muzzy billet clutch basket. I was hoping to get into the high 170's. Some of you guys with similar mods are getting 180hp. Although there was a small A/C in the dyno room, it was warm and humid when we started, and got warmer as the tuning went on. When I ride, the bike feels strong with no dips. The tuner commented that he felt no dips in power and that the hp curve was smooth. A/F for the most part ran ~13:1 with a few small peaks/dips.
Note: The oil level before the dyno was at the "high mark" on the sight glass. I changed the oil this morning and it is now at the middle of the sight glass between the low and high marks.
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Mark
'03 ZX-12R
'12 1199S
  
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VincentHill
Needs a life
Posts: 6520
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posted August 09, 2003 11:45 AM
On my 2K ZX12r, with an Akra Pipe, Bear Stacks, K&N plus PC3r, In Maryland I got 167+ HP. The filters made no difference and the stacks made about 2+ HP Difference (I was making 164 and 165 without the stacks!) I made 152+ HP Stock, so 15 more HP is not bad! The 183 HP I made was under good conditions with the BMC Race and the addition of the Billet basket! (Did I mention the Step tube Hindle?) +4 degrees is a lot of advance!
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Made History @ Daytona and still one fast old man!!
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entropy
Moderator
Posts: 8671
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posted August 09, 2003 03:16 PM
 Edited By: entropy on 9 Aug 2003 16:29
magzx,
I live in Houston area, and when my bike was set up exactly like yours, i got essentially EXACTLY the same hp numbers. I really don't worry about dyno numbers except as back to back comparisons of mods on the same dyno, same day.
I have no doubt that some folks are seeing 170-180's w/stock motors, but I'll wager big bux that their bikes are NOT getting any more mph in the 1/4.
I had my bike dynoed many times at: KS Cycle works in Katy (DJ150), Sabin in Dallas (DJ250 w/sniffer), and at JohnnyCheese in Austin (DJ250 w/sniffer). All 3 dynos read pretty similar (JC's a bit lo perhaps) and none of them give the outrageously high #'s I see posted from time to time.
Many of the big hp numbers are generated from dynos in AC'd rooms like Lee's.
Bottom line: don't listen to the big dyno #'s, take yr baby to HRP and see what the mph is. BUT, Houston weather has a very big impact on hp; up to 7-8% change from Feb to July; mph can drop 2-4 easily on a lo pressure, hot day.
Where did you get yr bike dynoed?
Do you run the Texas Shootout?
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magzx12r
Expert Class
Posts: 252
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posted August 09, 2003 05:25 PM
Low Dyno #'s
Entropy, this is Mark. I talked to you on the phone a year or two ago about getting a big bore kit on my bike, but I never did. I have a red 2000 that I bought from Highlands. I have not run my bike at the track. I had the bike dyno'd at NW Honda on 45N and West Rd.
Vince, Highlands set my timing to +4 deg. Would it be better to replace my PC-3 with a PC-3R where I can vary the timing instead of a constant +4 deg? I know the Hindle Step Tube is making more hp than the Akra, but what about the Arata? I saw an Arata pipe up close and it is sweet.
One other question, should I aim for an AF ratio of 13.2:1 across the rev range?
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Mark
'03 ZX-12R
'12 1199S
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VincentHill
Needs a life
Posts: 6520
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posted August 09, 2003 07:41 PM
Personally, knowing what I know now, I would not have bought a PC3r, just used the advancer! The +4 in fine, even great at low rpms, but fights you on top!
I looked at the Perfection is pipe building called an ARATA (It was designed by the person that designed the TiForce) I do not think is will make any or much more than the Akra. The main thing about a TiForce, Muzzy and Hindle is that they are 4-2-1 and the ARATA and Akra are 4-1's
13.2 :1 is an excellent AF ratio for power and I would not go leaner!
You have never said what your "Original" HP Was!
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Made History @ Daytona and still one fast old man!!
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necro
Needs a job
My Grandma Is A Virgin
Posts: 2148
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posted August 09, 2003 08:31 PM
My stock did 165.7 HP on swft's/ZHooligan's dyno.
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3829
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magzx12r
Expert Class
Posts: 252
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posted August 10, 2003 08:11 AM
Low Dyno #'s
I didn't dyno the bike before the mods. I had a Muzzy pipe put on back in 2000 and the shop did not have a dyno. When I switched from the Muzzy pipe to the Akra in '01, the shop that did the work did before and after dyno's on a Factory Eddy Current dyno. With the akra, PC-3, K&N's, and timing advancer, I got 165.5 hp and 90.87 ft-lbs which was a couple hp more than the Muzzy. I just added the Bear Stacks and billet clutch basket a couple of months ago.
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Mark
'03 ZX-12R
'12 1199S
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k bryant
Needs a job
Sponsor
Posts: 2911
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posted August 10, 2003 10:59 AM
Huh? From my understanding, if you calculate the difference from DJ150 to a Factory Eddy current, you would have been in the 190 hp range on the DJ150. And I keep seeing results that are 5 - 9hp higher on a DJ250.
If you are/were getting 165.5 hp on a Factory Dyno, you've got a monster on your hands! But I don't see how'd you'd get similar numbers on your original post using a DJ250??????
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magzx12r
Expert Class
Posts: 252
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posted August 10, 2003 07:53 PM
Dyno #'s
The dyno on the Factory Eddy Current was at ~4300 miles and the temp was low 80's. The dyno on the DJ250 was at ~13,000 miles and the temp was the low 90's with a lot of humidity. I may go back to the Factory dyno to see what my numbers are now.
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Mark
'03 ZX-12R
'12 1199S
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