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Messages - Leon_Johansson_

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Briggs Flathead / Re: 22 Ci 10 hp questions.
« on: November 14, 2018, 10:28:54 am »
The rule that we go by, if the governor is gone, so is the stock flywheel.
It is not up for debate. Also, nobody will teach anyone to do so from
This site.
Alright, no need getting angry. Ill tell everyone that they’ll have to invest a ton of money if they want to rev a little higher if that makes you happy.

2
Briggs Flathead / Re: 22 Ci 10 hp questions.
« on: November 14, 2018, 09:51:37 am »
Yes the flywheel is dangerous, if you wish to take on financial responsibility for every flywheel made, you can make that statement.
Please do not make that statement here again.

Yea not saying it’s completely harmless but the flywheel often fails above 5500 rpm where you get valve float or it already is damaged, most often someone has tried getting it of and cracked it in the process. The first thing to fail in a stock ungoverned engine is almost always the “dogbone” (if it has one) or the rod. Not suggesting to get a billet rod and no flywheel, if you have the money spend it. Look at this he explains it great http://www.atltf.com/t2575-governors-flywheels-and-an-internet-full-of-crap

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Briggs Flathead / Re: 22 Ci 10 hp questions.
« on: November 11, 2018, 06:43:59 pm »
Sounds like a great plan

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Briggs Flathead / Re: 22 Ci 10 hp questions.
« on: November 11, 2018, 02:56:02 pm »
From what i have heard the 21, 22, 25, 28 are basically the same engine with different strokes, head and sometimes different pistons.

If this is the case then they should all work with the 28 billet flywheel

I know the 28 and 25 shares the same rod and piston except the 28 avs that uses the same piston as the 21 wich is a shorter piston.
If the crank has the same rod journal as the 28/25 and if the stock rod is as long as your 25 rod or the same length as the arc 28 rod you could probably just use the 28 billet rod.

5
You could get arund 5500 with a removed governor, porting and polishing, and shaving the eyebrows. If you have the time and money you should get a billet rod and flywheel, atv carb, straight pipe exhaust, maybe a cam and upgrade the whole valve train and do some porting and polishing and shave the eyebrows a little, dont go crazy on the eyebrows, only slope up to the top of the cylinder and never polish the intake!

6
Briggs Flathead / Re: 22 Ci 10 hp questions.
« on: November 11, 2018, 11:42:52 am »
What’s the complete model number on your engine?

7
Briggs Flathead / Re: 22 Ci 10 hp questions.
« on: November 10, 2018, 03:11:24 pm »
Thanks hotrodbriggs, yea we talked on some video.
I’ve got another channel with my friend Called F&L garage on youtube where im going to to upload a video of my 28 very soon.

And if you ever find a billet rod that works for whatever engine you’re gonna build make sure it’s the right length because the model 28 uses the model 28 avs piston with the billet rod or some of the model 21 pistons, the piston number is 792307 thanks to pjg56 for helping me find it.

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Briggs Flathead / Re: 22 Ci 10 hp questions.
« on: November 10, 2018, 03:04:49 pm »
The whole engine is designed to be able to run well over 3600 rpm for a good well lasting engine. The only reason it only revs to 3600 rpms is because that’s what every small equipment engine is set to run. If it wasn’t designed to be able to rev higher there would be a much higher risk of blowing them even at govorned speeds.
And when we get to the flywheel, the last thing Briggs & Stratton wants is a lawsuit because the flywheel was weak and hurt somebody, that’s why they design it to rev much higher.

Now dont get me wrong i would suggest using a billet flywheel if you got the money or atleast make a scatter shield. But you’re probably going to blow the stock rod before the flywheel.

9
Briggs Flathead / Re: 22 Ci 10 hp questions.
« on: November 10, 2018, 12:03:12 pm »
If you just run it ungoverned it could rev up to about 5000-5500 rpms until you upgrade the valve springs. It could probably handle just running ungoverned for a long time depending on how you drive and how much you rev it up.
If it is Synchro Balanced I wouldn’t ungovern it at all because it’s a really weak point in the engine if you dont get the billet dogbone.

The flywheel isn’t as dangerous as some people make it seem, if you haven’t bashed on it with a hammer or it doesn’t have any cracks it will probably be good until you upgrade the valve springs, then it becomes dangerous.

My suggestion is to wait and see if you could find a 28 or at least a 25 to build or see of your blown engine is good enough, maybe some honing and polishing the crankshaft could be enough.

10
Briggs Flathead / Re: Briggs model 28 piston
« on: October 31, 2018, 04:49:13 am »
Sweden

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Briggs Flathead / Re: Briggs model 28 piston
« on: October 30, 2018, 08:38:32 pm »
Thanks for everything and if you’d ship to a different country i would be happy to pay you through paypal.

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Briggs Flathead / Re: Briggs model 28 piston
« on: October 30, 2018, 12:39:38 pm »
Well i bought the 6280 rod and i have measured both the piston and the bore with a caliper and all.
But it always comes out as 83.7mm and thats quite a bit of difference from the 87.7 that it’s supposed to be. Maybe i should get the model 21 piston and try.

13
Briggs Flathead / Re: Briggs model 28 piston
« on: October 30, 2018, 10:44:52 am »
Thanks, Do you have a link to the model 21 ohv horizontal piston?

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Briggs Flathead / Briggs model 28 piston
« on: October 30, 2018, 09:06:00 am »
I just started building a briggs model 28 i/c flathead with the arc dog bone and connecting rod but i just noticed that the cylinder bore is 3.3 inches (83.7)mm wide when it’s supposed to be 3.4 inches (87.7) mm. So i was wondering what piston should i get? One that is short enough for the arc rod and just 3.3in wide. Maybe the briggs model 49 piston?

Any help is appreciated.


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