View Full Version : 40 yamaha firing 123 - 132
byrdsperformance@tds.net
02-11-2012, 03:49 AM
Ok motor head's let's hear your fact's an opinion's
Do you think this mod will or mite improve the performance of this motor ???
Press crank apart an reverse #'s 2 - 3
Swap out # 2/3 coil lead's:
Fast Fred
02-11-2012, 05:44 AM
no:cool:
byrdsperformance@tds.net
02-11-2012, 11:08 AM
no:cool:
No , meaning dont think so are what ?
Any proven fact's like been there done that, dyno tested ?
It is a known fact it will work:)
Fast Fred
02-11-2012, 11:28 AM
no, no gain, sure it will work, more power, no.:cool:
88workcar
02-11-2012, 05:48 PM
no, no gain, sure it will work, more power, no.:cool:
I agree, but go ahead and try it, whats to loose.
byrdsperformance@tds.net
02-11-2012, 07:11 PM
I agree, but go ahead and try it, whats to loose.
It's allready been tried.:;)
88workcar
02-12-2012, 06:58 AM
So what happened, and differant? I know that with a 5.0 ford motor things change. Fill us in.
byrdsperformance@tds.net
02-12-2012, 09:00 AM
This crank is in a every day genral use motor.
Crank had to be rebuilt for bad bearing's.
During reassembly 2 an 3 were reversed, (by accident)
This is discovered after engine was started
So what the hell, swap coil lead's an give it a try.
Still run's ok today.
Since it's a every day fishing motor i cannot state any performance gain's.
The point of my question is to hear if folk's have tried this.
Tested like dyno, rpm's inproved flow. ect.
Fast Fred
02-12-2012, 11:07 AM
not a good "fix".:eek:
byrdsperformance@tds.net
02-12-2012, 11:23 AM
not a good "fix".:eek:
Well how long you think result's will take to prove this ?:confused:
Fast Fred
02-12-2012, 12:21 PM
that time has passed, it's not a good fix, all you did is make a problem to fix a problem you let happen, i don't see how you can call that fixed.
Popa Sam
02-12-2012, 12:44 PM
In the mid 1970's Merc made this same change, or maybe the reverse of it, to their 3 cylinder's and changed the horsepower rating from 65 to 70. I don't remember which way it was changed. Other changes were made at the same time to exhaust and carbs, so not sure how much this change affected the power.
byrdsperformance@tds.net
02-12-2012, 12:59 PM
that time has passed, it's not a good fix, all you did is make a problem to fix a problem you let happen, i don't see how you can call that fixed.
Mechine shop did crank work, not (me) i did not create this so called problem :confused:
So far result's are motor idle's, an run's fine.
Been quite a while, quess if we will live long enough time will tell the outcome:eek:
Thank's for your thout's FRED
Fast Fred
02-12-2012, 02:22 PM
best of luck:cool:
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