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Buell Forum » Old School Buell » Archives OSB 001 » Archive through May 04, 2005 » Stage 3 rebuild help required « Previous Next »

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Ezetobebad__uk
Posted on Thursday, April 14, 2005 - 12:26 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

I am sure you have this many times before but I will ask anyway.

1 - I am in UK, what RWHP can I expect?.

2 - Will Dyno results differ from those of you guys in US due to altitude?

3 - What ignition timing ,advance curve ect should my engine builder use as a base setting?

4 - What is considered a safe rev limit, that in theory I can use continuously without risk of failure?

5 - Can you advise on anything my engine builder should be doing for max RWHP?

6 - How much time should be spent on Dyno?

my spec as below,

*NRHS 2004 XL1200R Stage 3 heads, 11.5 comp, Dual plugged, 30 degree squish
*Axtell 1250cc Nikasil Cylinders
*NRHS Hurricane/CP 1250 30 degree pistons,
*Cometic topend kit
*Screamin' Eagle 44mm intake manifold
*Red Shift .585" Cams
* Buell pro series race header
* Supertrapp muffler (I think it is from Chevy as used in B2win)
* Hsr 45 carb
* Forcewinder Xr inlet
* Daytona adjustable ignition


Thanks - eze
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Wyckedflesh
Posted on Thursday, April 14, 2005 - 12:49 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

2 - Will Dyno results differ from those of you guys in US due to altitude?

uhm...no, we have sea level and up just as you do there in the UK. A good dtno shop will be able to make adjustments for SAE or what ever the Euro standard is.
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Alex
Posted on Saturday, April 16, 2005 - 06:01 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Eze,
if Your engine builder does not know all the answers to Your questions IŽd suggest You find another engine builder. Engines of that kind are no playground for beginners.
Best luck.

Alex
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Firemanjim
Posted on Saturday, April 16, 2005 - 01:57 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

That's a bunch of compression,what gas are you running.Better set your ignition module at the curve with least advance to keep from pinging.Good assembly and break in ,then dyno tuning for best performance a must.Not surprised to see 115+ HP.
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Blake
Posted on Saturday, April 16, 2005 - 06:02 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Take a look at the dyno charts posted in the Knowledge Vault "Dyno Charts" topic.

I agree with the Fire Man.
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Oldog
Posted on Sunday, April 17, 2005 - 10:34 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Ez:
I seem to recall reading here that for other than mild or stock motors the force winder may actually hurt your performance
I believe that it was Phat J or Spiderman that discovered this
interesting fact, what some of the serious guys are running is called the "ham can" this seems to be the best for all out power
what you are trying to put together sounds awesome, but the result is the sum of all of the parts. I would hate to think that you shelled out a lot of hard earned money and did not get what you were after, Sorry ez but the thread escapes me ..

as a final thought what Alex, FMJ, AND Blake said, and in spades


all the best the ol' dog

(Message edited by oldog on April 17, 2005)
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