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post #1 of 9 Old 10-24-2019, 07:07 PM Thread Starter
 
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If i boosted the cm250, how much horsepower can i make without the motor blowing up? (If anyone had to guess)
I think 35 would most likely be safe considering the the C/R being on the lower mid range at 9.2:1-9.4:1 and the Australian versions making 27 or 28, only difference i know is ITB instead of single toilet. Just hypothesizing, definitely getting a GT0632 tho, looks fun!
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post #2 of 9 Old 10-25-2019, 07:09 AM
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3x the designed hp should make things interesting - the question is what will fail first? no free lunch

1985 CMX250 ... 1986 CMX450 ... 2005 Ruckus 50
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post #3 of 9 Old 10-25-2019, 04:42 PM
 
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If you manage to gain more than the typical 10% increase from a decent intake & exhaust mod (meaning something much more elaborate than a pod filter and hacked OEM pipes), you'll be the first to do so.

"Ride Safe, Chop Safer" Motorcycles are not unsafe. However; they are extremely unforgiving of inattention, incompetence, ignorance, and stupidity.
Dismantling, sawzalling, and rattle canning does not make a bobber.
Those are STEPS toward customizing, not customizing unto itself.
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post #4 of 9 Old 10-25-2019, 06:17 PM Thread Starter
 
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I mean the turbo from garrett costs about as much as the camshaft i got for my hemi so nothing I'm not unfamiliar with, probably have to run an external oil pump and reservoir. Ihdk hows that for a pod filter?

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If you manage to gain more than the typical 10% increase from a decent intake & exhaust mod (meaning something much more elaborate than a pod filter and hacked OEM pipes), you'll be the first to do so.
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post #5 of 9 Old 10-25-2019, 06:22 PM Thread Starter
 
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50 ain't too bad


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Originally Posted by 01-7700 View Post
3x the designed hp should make things interesting - the question is what will fail first? no free lunch
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post #6 of 9 Old 10-26-2019, 04:41 PM
 
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Many have attempted a turbo, none have posted finished/successful results. Again, if you do so you'll be the first.

"Ride Safe, Chop Safer" Motorcycles are not unsafe. However; they are extremely unforgiving of inattention, incompetence, ignorance, and stupidity.
Dismantling, sawzalling, and rattle canning does not make a bobber.
Those are STEPS toward customizing, not customizing unto itself.
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post #7 of 9 Old 10-27-2019, 06:13 PM
 
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Quote:
Originally Posted by Shadow Shack View Post
Many have attempted a turbo, none have posted finished/successful results. Again, if you do so you'll be the first.
Now that sounds like a challenge. I could see the hardest part being the exhaust manifold fabrication. Maybe a properly sized turbo would be a little hard of your not so good at math.

Why do you think everybody fails ?

1985 Honda Rebel 250
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post #8 of 9 Old 10-27-2019, 10:22 PM
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A little reading on the subject. https://www.hondarebelforum.com/f18/...ress-4202.html

Keepin' all the left over parts. Gonna use 'em to build another bike!

'01 & '09 Rebel 250, '06 Ninja 250, '89 VN 750
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post #9 of 9 Old 10-27-2019, 11:53 PM
 
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The least expensive/least labor intensive/most effective procedure for getting more horsepower out of your Rebel is to jack up the gas cap and sliding a Shadow, Magna, or Valkyrie underneath it. All of those bikes are bolt-on compatible with the Rebel gas cap.

"Ride Safe, Chop Safer" Motorcycles are not unsafe. However; they are extremely unforgiving of inattention, incompetence, ignorance, and stupidity.
Dismantling, sawzalling, and rattle canning does not make a bobber.
Those are STEPS toward customizing, not customizing unto itself.
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