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-   -   Horizontal Conversion (http://www.diygokarts.com/vb/showthread.php?t=11895)

redsox985 06-13-2011 02:34 PM

Horizontal Conversion
 
Well, this is my first time converting a vertical engine to horizontal, so I decided to stop bumming off of TS's LB thread, and start my own. Before I even get into this, I just found today that our friends have a dead snowblower and dead weed wacker! They offered both to me. I couldn't say yes fast enough.

Anyways, onto this engine. It's a Briggs 190cc. Here's a quick photo timeline of today. I need to get a positive ID on this since I messed up the gaskets when splitting the case open. The carb wasn't in bad shape considering it had no air filter and the air box was blown out. It looks like it backfired and blew a hole in the air box? I was SO happy to see a straight, keyed shaft. It also have 2 half circle key slots in the opposite side. Once I dropped out the motor, which was only held on to the deck by 1 bolt (3 holes though), I nearly threw a party when I saw the PTO.

http://i820.photobucket.com/albums/z...-12-42_487.jpg
http://i820.photobucket.com/albums/z...-36-41_264.jpg
http://i820.photobucket.com/albums/z...-24-05_499.jpg
http://i820.photobucket.com/albums/z...-39-12_202.jpghttp://i820.photobucket.com/albums/z...-36-34_967.jpg
http://i820.photobucket.com/albums/z...-54-03_135.jpg
http://i820.photobucket.com/albums/z...-54-23_476.jpg
http://i820.photobucket.com/albums/z...-54-51_135.jpg

dave1701 06-13-2011 03:03 PM

What will you do get enough flywheel weight with the blade off?

redsox985 06-13-2011 03:09 PM

Haven't we said that it's tougher to start, yet starts every time someone proposes running a mower engine without a blade?

B man 06-13-2011 03:14 PM

some engines have the problem some don't depends on make and model.

sexyvicta 06-13-2011 03:19 PM

i have started an engine the same as that without the blade hub and blades(still attached to mower)

no probs

sideways 06-13-2011 06:27 PM

Just for future reference, pretty much all Briggs mower engines have a 7/8" PTO with a standard key way on one side and 2 woodruff key ways on the other side. It's VERY rare to find something that doesn't have that.

Good luck with the conversion mate, hopefully you'l be able to document it a bit better than me! :o

I've got an engine exactly the same as that that I was going to convert, it feels like its got some internal problems though. I've got to get off my arse and take it apart...

Thanks

Hayden

sexyvicta 06-13-2011 06:32 PM

Quote:

Originally Posted by sideways (Post 154323)
VERY rare to find something that doesn't have that.

no its not. most engines can come with two or three diff diameters and lengths. Each lawnmower constructor seems to choose a different option to suit their bodies and blade drivers. Have a look at a crankshaft off a briggs victa

i have 3 different crankshafts on my 3 190cc brigs vertical shaft lawnmower engines

sideways 06-13-2011 07:20 PM

Quote:

Originally Posted by sexyvicta (Post 154325)
no its not. most engines can come with two or three diff diameters and lengths. Each lawnmower constructor seems to choose a different option to suit their bodies and blade drivers. Have a look at a crankshaft off a briggs victa

i have 3 different crankshafts on my 3 190cc brigs vertical shaft lawnmower engines

My Briggs Victas were all 7/8". I've had 4 of those, they had shorter shafts than most though.

I've worked in a small engines shop, pretty much everything is 7/8". Maybe it's an Australian thing. :confused:

Thanks

Hayden

redsox985 06-13-2011 07:39 PM

So, my biggest question is what do I make the dipper from and where do I attach it, besides "to the crank shaft"?

Thanks!

Doc Sprocket 06-13-2011 07:42 PM

I'd go with 16ga steel sheet- but that's just me. And attach it to the rod cap via the bolts.

Edit- you can make dummy dippers out of a pop can until you get the size/shape right.

sideways 06-13-2011 07:48 PM

Quote:

Originally Posted by redsox985 (Post 154352)
So, my biggest question is what do I make the dipper from and where do I attach it, besides "to the crank shaft"?

Thanks!

I made mine out of plate steel that was about 2mm thick. I bolted it to the conrod using the rod bolts.

If I stop being lazy today then I might take it apart and get some pics for you.

EDIT: as Toystory says, make mock ones out of tin cans. I made a few mock ones and I'm bloody glad I did. My original thoughts were way off.

redsox985 06-13-2011 08:17 PM

Ok, now that I know what I'm doing for that, how do I ensure that the cam is in properly and that the timing is correct?

sideways 06-13-2011 08:27 PM

Quote:

Originally Posted by redsox985 (Post 154367)
Ok, now that I know what I'm doing for that, how do I ensure that the cam is in properly and that the timing is correct?

There's a little dot on the cam gear and another on the crank gear. You make them line up(so the are touching) and that's it.

You shouldn't have to pull the cam out though, I only pulled mine out to clean the bushings it turns in. I didn't even pull the head off when I converted mine.

redsox985 06-13-2011 08:36 PM

I just wanted to clean it all up cause the old oil was NASTY! Next question, do I need this spring loaded thing? I feel like it needs to come off.

A picture would help, huh?
http://i820.photobucket.com/albums/z...2-21-00_57.jpg

sideways 06-13-2011 08:51 PM

Quote:

Originally Posted by redsox985 (Post 154374)
I just wanted to clean it all up cause the old oil was NASTY! Next question, do I need this spring loaded thing? I feel like it needs to come off.

:roflol: The oil in mine was horrible! The engine was 1979 and I'm pretty sure it'd never had an oil change. The oil that came out of it was more like grease, it was about as thick as cold honey! :worried2: The whole insides of the engine were just black.

That spring thingy, pictures?

Edit: what is that thing? Fancy kill switch linkage? I vote it needs to go. :D

redsox985 06-13-2011 10:02 PM

I have no clue! It presses on the fly wheel and had a wire going to a clip on it. It was connected to the cable that goes to the handle you squeeze to start it. I think the wire some how didn't allow it to start and the whole thing acted like a brake stopping the rotation and not allowing it to start without the handle squeezed. Does anyone know what to do with this wire?

EDIT: Here's the little clamp the wire went to.
http://i820.photobucket.com/albums/z...21-00_57-1.jpg

B man 06-13-2011 10:20 PM

oh yeah it needs to go. its a engine brake. get rid of it and hook up a proper kill switch.

redsox985 06-13-2011 10:27 PM

So, do I need to extend it to a switch and then ground the other lead from the switch to the block?

B man 06-13-2011 10:28 PM

yep. also how are you gonna setup throttle?

robbie 06-13-2011 10:29 PM

The thing with a spring on it is an engine brake. It makes it so you can't run the engine without your hand on the handle bar. Supposedly this makes mowers safer, but what it usually means is that you can't pick up trash and sticks while mowing because you have to keep holding the stupid handle bar.

Take it off and use the cable for your wheel brakes if you can.


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