how mutch hp can u gain from very ritch to perfect jetting
EricMichael
New member
prob 2-3..then blow your motor that night lol
Mark / C&C PowerSports
New member
Haha
That is also coming from a kid that plans on changing his jets EVERYTIME the weather changes.........................just pullin you chain eric dont get mad............
That is also coming from a kid that plans on changing his jets EVERYTIME the weather changes.........................just pullin you chain eric dont get mad............
vipertripplexxx
New member
If you are extremely rich, a gain of ten to fifteen horse is not out of the question on a 140 horse machine.
EricMichael
New member
vipertripplexxx said:
didn't realize that much horse...that was my plan to jet atleast twice a season for optimal performance...mark over there thinks i'm crazy for this..
Small Question Many Anwser And Maybe A Little War About It
YAMMIEGOD3:16
Active member
WHATEVER YOU DO. DON,T POST THIS QUESTION ON vmax4.com !!! 3:16 (tony)
Yammiegod, it the V-Max 4 more sensitive to running lean then other engines?.
vipertripplexxx
New member
WOW!!!!
I read that v-max4 post and I have to say that has got to be some of the funniest $hit iv'e read in a long time!!!
Seriously though, a pig rich setting will kill a boat load of power! But Not all engines are the same, SRX's are blessed with a wide squish band. This helps when running rich because it mixes the fuel exceptionally well, and it still burns quickly.Yes too lean on an SRX will lower the power, unlike many other sleds that run best just before MASS DESTRUCTION.
High compression can also help tremendously.
An example would be a dyno sheet I saw on a stock XCR 800. It was running stock jets, and the dyno room was warm about 50 degrees. the corrected HP was something like 138 HP. five jet sizes smaller it was pumping out 160 HP. BONE STOCK!
I read that v-max4 post and I have to say that has got to be some of the funniest $hit iv'e read in a long time!!!
Seriously though, a pig rich setting will kill a boat load of power! But Not all engines are the same, SRX's are blessed with a wide squish band. This helps when running rich because it mixes the fuel exceptionally well, and it still burns quickly.Yes too lean on an SRX will lower the power, unlike many other sleds that run best just before MASS DESTRUCTION.
High compression can also help tremendously.
An example would be a dyno sheet I saw on a stock XCR 800. It was running stock jets, and the dyno room was warm about 50 degrees. the corrected HP was something like 138 HP. five jet sizes smaller it was pumping out 160 HP. BONE STOCK!
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flying yami
New member
Last year i ran with a xc 800 on a warm day. He had his jets dialed in perfect for that day. Mine were not. All day long i could not lose him until the sun went down and it was a different story. So yah it makes a big difference.
toydoc
Member
Just a FYI, all sleds stock, all numbers form dyno-tech.
1995 Vmax600
155MJ
93HP / 63TQ @ 7750rpm
153.8MJ
95HP / 64TQ @ 7750rpm
1997 Mach700
320MJ
137HP / 84TQ @ 8500rpm
290MJ
139HP / 86TQ @ 8500rpm
1995 XCR 440
230MJ
78HP / 53TQ @ 8000rpm
200MJ
80HP / 52TQ @ 8000rpm
1995 ZRT800
420MJ
146HP / 93TQ @ 8250rpm
390MJ
152HP / 97TQ @ 8250rpm
1995 Vmax600
155MJ
93HP / 63TQ @ 7750rpm
153.8MJ
95HP / 64TQ @ 7750rpm
1997 Mach700
320MJ
137HP / 84TQ @ 8500rpm
290MJ
139HP / 86TQ @ 8500rpm
1995 XCR 440
230MJ
78HP / 53TQ @ 8000rpm
200MJ
80HP / 52TQ @ 8000rpm
1995 ZRT800
420MJ
146HP / 93TQ @ 8250rpm
390MJ
152HP / 97TQ @ 8250rpm
shortstop20
New member
- Joined
- Mar 6, 2005
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- 1,583
- Age
- 38
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- Stickney, South Dakota
- Website
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vipertripplexxx said:
Got a link?
vipertripplexxx
New member
1997 Mach700
320MJ
137HP / 84TQ @ 8500rpm
290MJ
139HP / 86TQ @ 8500rpm
Only two horsepower? yea right! A change of three jet sizes, and only two horse? something else is happening here!
Tell you what.... jet your sled up three sizes and race the same model sled with stock jetting installed. Most sleds will have such a large power loss that bumper won't even be in sight!!!!!!!!!
320MJ
137HP / 84TQ @ 8500rpm
290MJ
139HP / 86TQ @ 8500rpm
Only two horsepower? yea right! A change of three jet sizes, and only two horse? something else is happening here!
Tell you what.... jet your sled up three sizes and race the same model sled with stock jetting installed. Most sleds will have such a large power loss that bumper won't even be in sight!!!!!!!!!
vipertripplexxx
New member
Besides a 1997 mach 700 should be well above 137 HP stock!!!!
I'm thinking more like 145 HP Stock.
I'm thinking more like 145 HP Stock.
vipertripplexxx
New member
Here are the results from an f-7 with leaner fuel curve of 05 ECU, dynotech reserch. 133 HP to 140 HP Keep in mind that the 133 figure is not overly rich, just mildly richer than the 05 map.
Scott’s 04 square ECU was fitted with these very similar results. F7SN01 133.4 04 F7, 04 ECU
83.5
88.2
90.4
93.6
98.4
101.2
106.6
107.9
111.5
115.1
118.3
122.1
125.1
129.6
132.1
133.4
133.2
131.2
127.8
115.5
F7SN04 140.8 04 F7, 05 ECU
89.4
92.5
94.8
98.6
103.5
106.1
112.3
114.8
118.2
121.1
124.6
130.7
135.1
138.3
139.9
140.8
140.8
138.3
Scott’s 04 square ECU was fitted with these very similar results. F7SN01 133.4 04 F7, 04 ECU
83.5
88.2
90.4
93.6
98.4
101.2
106.6
107.9
111.5
115.1
118.3
122.1
125.1
129.6
132.1
133.4
133.2
131.2
127.8
115.5
F7SN04 140.8 04 F7, 05 ECU
89.4
92.5
94.8
98.6
103.5
106.1
112.3
114.8
118.2
121.1
124.6
130.7
135.1
138.3
139.9
140.8
140.8
138.3
5hp if you are rich 10 to 15 if you are pig rich. Just got back from the dyno and that is what I saw.
vipertripplexxx
New member
Hey Double-D what sled were you dyno testing?
tripple X I dynoed my srx with a price 1000. I also put my stocker on the dyno and did not have small enough jets with the 64 degree temps to see the numbers that it should of pulled. Dam WHAT an avitar! 
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