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Author Topic: exploded yfz450 motor  (Read 12470 times)
k-town quad boy #5
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« Reply #25 on: December 13, 2007, 10:22:57 PM »

i def. agree especialy once you put power to them they just dont hold up.
so how does the non programmable rev box mess it up because i have an adjustable srp metals box. maybe that isnt helping anytihing?
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A.T.P. RACING
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« Reply #26 on: December 13, 2007, 11:40:11 PM »

The timing map in the box was designed for a stock engine. The SRP and or Pro Comm boxes were also designed to specifically enhance the performance of a stock application. Once you make changes like increased compression or more efficient cylinder head air flow, you have to make adjustments to compensate for the increased performance.

As with any good build, be it ATV or Automotive , years of hands on experience, hundreds of thousands of dollars worth of R&D, tens of thousands of dollars worth of testing equipment, ( Dyno, Flow Bench, ect...) have taught us that not only using the best parts that the many different industries have to offer, the little things like tuning a quad properly, will not only yield the best possible performance, but will keep it running properly for many many hours.

A person can waist a lot of good money if they are unsure of what they want but really need, or if there builder does not have the proper equipment to do the job.

I hope all of my rambling will help you in one way or another. It is no secret that the YFZ's are probably the most prone to engine failure, but they can also be a good quad as well.

Mike
ATP Racing
« Last Edit: December 13, 2007, 11:43:32 PM by A.T.P. RACING » Logged

Fox17
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« Reply #27 on: December 14, 2007, 12:02:01 AM »

that engine sucks. are you gonna look for a new motor or a whole new quad?

p.s. i sent ya a pm bout that 250R k-town quad boy #5.
« Last Edit: December 14, 2007, 12:16:51 AM by Fox17 » Logged
novadave
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04 yfz450


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« Reply #28 on: December 14, 2007, 01:26:47 AM »

mine is an 04 and still kickin, but i got my fingers crossed  Wink
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quad control
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« Reply #29 on: December 14, 2007, 01:52:50 AM »

Don't feel bad here's my Honda

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sykolincoln
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« Reply #30 on: December 14, 2007, 09:41:13 AM »

YAY!! for 2 strokes!!! Cool
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k-town quad boy #5
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« Reply #31 on: December 14, 2007, 04:14:40 PM »

The timing map in the box was designed for a stock engine. The SRP and or Pro Comm boxes were also designed to specifically enhance the performance of a stock application. Once you make changes like increased compression or more efficient cylinder head air flow, you have to make adjustments to compensate for the increased performance.

As with any good build, be it ATV or Automotive , years of hands on experience, hundreds of thousands of dollars worth of R&D, tens of thousands of dollars worth of testing equipment, ( Dyno, Flow Bench, ect...) have taught us that not only using the best parts that the many different industries have to offer, the little things like tuning a quad properly, will not only yield the best possible performance, but will keep it running properly for many many hours.

A person can waist a lot of good money if they are unsure of what they want but really need, or if there builder does not have the proper equipment to do the job.

I hope all of my rambling will help you in one way or another. It is no secret that the YFZ's are probably the most prone to engine failure, but they can also be a good quad as well.

Mike
ATP Racing

yup ben through to many of them. was gunna get a suzuki but i already have tons of extra parts for my yfzs
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k-town quad boy #5
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« Reply #32 on: December 14, 2007, 04:17:01 PM »

Don't feel bad here's my Honda




haha YEAS. only the best have holes in there motors! more airflow lol Wink
but atleast yours spared your cylinder for you
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Tecatematt
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« Reply #33 on: December 27, 2007, 04:35:00 PM »

haha that sucks man i can feel your pain though. my father raced his bike forever gave it to me and after ten mins this is what i did. theres more pieces i just have to get them out of the exhaust Smiley



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