Author Topic: Why?  (Read 2485 times)

0 Members and 1 Guest are viewing this topic.

Offline SinisterRacing

  • Turf Warrior
  • **
  • Posts: 129
  • Karma: 2
  • Gender: Male
    • View Profile
Why?
« on: February 03, 2012, 01:47:10 PM »
I am starting to build a mowchine. I have aquired a few mowers. However the 2 I have that use the 12hp flatty, have thrown rods and holed the cases.
The 2 I have with 11hp flatty's run fine.
What is the cause of the rod failure on the 28ci?
TIA


Steve
SinisterRacingProducts

Offline GRUBDIGGER

  • Custom Gear Picker
  • Mow-Forum Junkie
  • ***
  • Posts: 2238
  • Karma: 5
  • Gender: Male
    • View Profile
Re: Why?
« Reply #1 on: February 03, 2012, 01:48:53 PM »
LACK OF OIL OR OVER SPEEDING.
JOHN HERRING
ARMA TECH
TRI-STATE RACING MOWER ASSC.
http://wwwtsrm.smfforfree.com/

Offline SinisterRacing

  • Turf Warrior
  • **
  • Posts: 129
  • Karma: 2
  • Gender: Male
    • View Profile
Re: Why?
« Reply #2 on: February 03, 2012, 01:58:44 PM »
Well I admit I have a lot to learn, but how do you overspeed a governed engine?
Steve
SinisterRacingProducts


Offline The Tank

  • Highly Mowtivated
  • ****
  • Posts: 3540
  • Karma: 10
  • Gender: Male
  • #44 Tank Racing!!!
    • View Profile
Re: Why?
« Reply #3 on: February 03, 2012, 02:01:22 PM »
Well I admit I have a lot to learn, but how do you overspeed a governed engine?

Governor could be out of adjustment or the governor itself could have been improperly adjusted allowing the engine to over rev.
Frank "The Tank" Woods

AKA "The Intek Outlaw"

Offline SinisterRacing

  • Turf Warrior
  • **
  • Posts: 129
  • Karma: 2
  • Gender: Male
    • View Profile
Re: Why?
« Reply #4 on: February 03, 2012, 02:34:49 PM »
Well I didn't know the governor was adjustable, I havent looked close at one at.
How much more rpm's than the stock 3650 can these engines take?
Steve
SinisterRacingProducts

Offline GRUBDIGGER

  • Custom Gear Picker
  • Mow-Forum Junkie
  • ***
  • Posts: 2238
  • Karma: 5
  • Gender: Male
    • View Profile
Re: Why?
« Reply #5 on: February 03, 2012, 03:09:40 PM »
DEPENDS ON THE ENGINE. IVE SEEN SOME KAWASAKIS RUN 4000 FOR 2000 HOURS BEFORE DAMAGE WAS DONE. MOST OF THE TIME IT IS LACK OF LUBRICATION. RAN LOW ON OIL OR NO OIL.
JOHN HERRING
ARMA TECH
TRI-STATE RACING MOWER ASSC.
http://wwwtsrm.smfforfree.com/

Offline SinisterRacing

  • Turf Warrior
  • **
  • Posts: 129
  • Karma: 2
  • Gender: Male
    • View Profile
Re: Why?
« Reply #6 on: February 03, 2012, 06:33:16 PM »
Well I picked up my first non blown 12hp today
So that makes 2 running 11's, 1 13.5, 1 12 and 1 24hp 8)
Steve
SinisterRacingProducts


Offline Boomhowar99

  • Newbie
  • *
  • Posts: 86
  • Karma: 0
  • Gender: Male
    • View Profile
Re: Why?
« Reply #7 on: February 03, 2012, 09:46:37 PM »
Ive had 8hp flatties when side of case bustd out run for over half hour and still start up and run good after replacing lower pan.
James Urhahn

If it aint breaking then you aint running it hard enuff!

Offline SinisterRacing

  • Turf Warrior
  • **
  • Posts: 129
  • Karma: 2
  • Gender: Male
    • View Profile
Re: Why?
« Reply #8 on: February 05, 2012, 06:19:42 PM »
whats the advantage of the brass syncro weights?

I havent narrowed a class yet, just want to build something for club level fun. I would like to run ungoverned but am thinking the cost might be to steep right now. Can't swing the billet flywheel for sure.

I am more than likely going to rebuild my 13.5(12hp) but after seeing the 2 I have with the blown rods, I am leaning torward the billet rod.

Any tips on this engine build will be greatly appreciated. I should have my valve spring tool here on Wed.

And yes I have used the search function. Overload of info that is all over the place.
Steve
SinisterRacingProducts

Offline The Tank

  • Highly Mowtivated
  • ****
  • Posts: 3540
  • Karma: 10
  • Gender: Male
  • #44 Tank Racing!!!
    • View Profile
Re: Why?
« Reply #9 on: February 05, 2012, 06:55:45 PM »
If you plan to run a governed class why worry about the billet rod? Not only is it illegal in any sanctioned organizations but there really is no need for it at stock rpms. Put the engine on bone stock and spend the extra money in your chassis. The chassis is the key ingredient in any class.
Frank "The Tank" Woods

AKA "The Intek Outlaw"

Offline GRUBDIGGER

  • Custom Gear Picker
  • Mow-Forum Junkie
  • ***
  • Posts: 2238
  • Karma: 5
  • Gender: Male
    • View Profile
Re: Why?
« Reply #10 on: February 05, 2012, 07:22:42 PM »
If you plan to run a governed class why worry about the billet rod? Not only is it illegal in any sanctioned organizations but there really is no need for it at stock rpms. Put the engine on bone stock and spend the extra money in your chassis. The chassis is the key ingredient in any class.

IM WITH YA TANK.
JOHN HERRING
ARMA TECH
TRI-STATE RACING MOWER ASSC.
http://wwwtsrm.smfforfree.com/

Offline SinisterRacing

  • Turf Warrior
  • **
  • Posts: 129
  • Karma: 2
  • Gender: Male
    • View Profile
Re: Why?
« Reply #11 on: February 05, 2012, 07:35:09 PM »
If you plan to run a governed class why worry about the billet rod? .
Because of the 2 stockers with holed cases.

Ultimately this engine will get "built" why buy a stock rod now just to buy a billet rod later?
Steve
SinisterRacingProducts

Offline The Tank

  • Highly Mowtivated
  • ****
  • Posts: 3540
  • Karma: 10
  • Gender: Male
  • #44 Tank Racing!!!
    • View Profile
Re: Why?
« Reply #12 on: February 05, 2012, 07:45:30 PM »
If your rules allow then put the billet. I was just stating in any governed classes of the major sanctioning bodies that the engine must remain completely factory stock internally. Anything beyond factory parts would be deemed illegal.
Frank "The Tank" Woods

AKA "The Intek Outlaw"

Offline SinisterRacing

  • Turf Warrior
  • **
  • Posts: 129
  • Karma: 2
  • Gender: Male
    • View Profile
Re: Why?
« Reply #13 on: February 05, 2012, 08:11:06 PM »
noted.

Thanks Tank, so internal stock for goverened.

Well come to think about it, I do have another 12, I should just do a stock rebuild on one and build the other over time
Steve
SinisterRacingProducts

Offline The Tank

  • Highly Mowtivated
  • ****
  • Posts: 3540
  • Karma: 10
  • Gender: Male
  • #44 Tank Racing!!!
    • View Profile
Re: Why?
« Reply #14 on: February 05, 2012, 11:09:09 PM »
Correct for any governed class the engine must remain internally stock.
Frank "The Tank" Woods

AKA "The Intek Outlaw"