| Briggs Opposed Build 46ci | |
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redlinemotorsportts Moderator
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Join date : 2013-03-18 Posts : 3131
| Subject: Re: Briggs Opposed Build 46ci January 22nd 2015, 11:21 am | |
| - mr.modified wrote:
- What are you going to use for a carb on this thing, Stock? Does it look like the intake manifolds are the same on these 46CI engines as the smaller ones? I know the 40 and 42CI's match up.
I can't imagine they are different. And yea I'm just swapping the 16.5s carb and intake over | |
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mr.modified Veteran Member
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Age : 34 Join date : 2013-11-02 Points : 7120 Posts : 2907 Location : New Jersey USA
| Subject: Re: Briggs Opposed Build 46ci January 22nd 2015, 6:36 pm | |
| The 14hp I have came with an aluminum intake, they common or not really? It's a two piece deal (split along full length) which is glued and bolted together. | |
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redlinemotorsportts Moderator
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Age : 27 Join date : 2013-03-18 Points : 7439 Posts : 3131 Location : raleigh nc
| Subject: Re: Briggs Opposed Build 46ci January 22nd 2015, 7:49 pm | |
| - mr.modified wrote:
- The 14hp I have came with an aluminum intake, they common or not really? It's a two piece deal (split along full length) which is glued and bolted together.
Pretty sure thats first gen/blacktop jenk. Probably more expensive to make then the one piecers. But didnt have a efficient way of making them back in the 80s. | |
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802 Customs Member
Age : 24 Join date : 2015-01-08 Points : 3714 Posts : 146 Location : Vermont
| Subject: Re: Briggs Opposed Build 46ci January 22nd 2015, 11:12 pm | |
| - redlinemotorsportts wrote:
Pretty sure thats first gen/blacktop jenk. Probably more expensive to make then the one piecers. But didnt have a efficient way of making them back in the 80s. I got a twin from the 80's with a one peicer. Pretty sure its like an 89 though. | |
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redlinemotorsportts Moderator
2014 Build-Off Entrant
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Age : 27 Join date : 2013-03-18 Points : 7439 Posts : 3131 Location : raleigh nc
| Subject: Re: Briggs Opposed Build 46ci January 23rd 2015, 7:07 am | |
| - 802 Customs wrote:
- redlinemotorsportts wrote:
Pretty sure thats first gen/blacktop jenk. Probably more expensive to make then the one piecers. But didnt have a efficient way of making them back in the 80s. I got a twin from the 80's with a one peicer. Pretty sure its like an 89 though. It's rare to find one, but not like worth much. | |
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mr.modified Veteran Member
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Age : 34 Join date : 2013-11-02 Points : 7120 Posts : 2907 Location : New Jersey USA
| Subject: Re: Briggs Opposed Build 46ci January 23rd 2015, 8:28 pm | |
| - redlinemotorsportts wrote:
- Pretty sure thats first gen/blacktop jenk.
Jenk?! More like weight savings. I would clean it up and use it, but I'm making dual carb manifolds. | |
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redlinemotorsportts Moderator
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Age : 27 Join date : 2013-03-18 Points : 7439 Posts : 3131 Location : raleigh nc
| Subject: Re: Briggs Opposed Build 46ci March 26th 2015, 9:54 pm | |
| Beltran customs racing crate engine is ready to be dropped in.... New sump gasket, this paper smells weird. Put lapping compounnd on the head and block, and rubbed them together. you can see the high spots in the heads clearly. Then some RTV copper goo on the heads. Put them on and bearly tightened the bolt. Let it set over a day or so Torquing everything up. Cleaning the block up with wire wheel in a drill and brake clean. Good enough Put the stator junk on and plates, then the flywheel. I eyeballed the timing degree, i advanced it 4-6 degrees id say. Then threw tins on I also plan on using this plate that holds the fan on, and welding the pull start pulley to it. so its removable. And voila! | |
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mr.modified Veteran Member
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Age : 34 Join date : 2013-11-02 Points : 7120 Posts : 2907 Location : New Jersey USA
| Subject: Re: Briggs Opposed Build 46ci March 26th 2015, 10:06 pm | |
| So if your going to use this for the Pennsylvania 1000, are you going to have head gaskets on hand just in case? I suppose a test run should tell you how well it will work before hand anyway. Should be intresting to see how it works out I think. | |
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redlinemotorsportts Moderator
2014 Build-Off Entrant
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Age : 27 Join date : 2013-03-18 Points : 7439 Posts : 3131 Location : raleigh nc
| Subject: Re: Briggs Opposed Build 46ci March 26th 2015, 10:26 pm | |
| - mr.modified wrote:
- So if your going to use this for the Pennsylvania 1000, are you going to have head gaskets on hand just in case? I suppose a test run should tell you how well it will work before hand anyway. Should be intresting to see how it works out I think.
Ill have the hole 16.5 on hand. so if anything goes wrong i just swap the engine in and put the intake back on. | |
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TheBeal Veteran Member
Age : 30 Join date : 2013-06-06 Points : 5673 Posts : 1402 Location : Central PA
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mr.modified Veteran Member
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Age : 34 Join date : 2013-11-02 Points : 7120 Posts : 2907 Location : New Jersey USA
| Subject: Re: Briggs Opposed Build 46ci March 28th 2015, 7:17 pm | |
| Spare engine...ok, shouldn't be an issue then.
And convert to horizontal? Good grief man! He just built a vertical shaft engine, installed a new trans, and got the belt working again! lol. | |
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802 Customs Member
Age : 24 Join date : 2015-01-08 Points : 3714 Posts : 146 Location : Vermont
| Subject: Re: Briggs Opposed Build 46ci March 28th 2015, 7:40 pm | |
| That gasket sure is custom. Anyway I may try the no headgasket thing on my 11 horse flatty, let me know how it works cause it sure is easier than shaving down the heads with some glass and lapping compound. Did you remove the governor? What did you do to the cam if anything, and for the timing advance did you just not use a flywheel key? | |
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redlinemotorsportts Moderator
2014 Build-Off Entrant
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Age : 27 Join date : 2013-03-18 Points : 7439 Posts : 3131 Location : raleigh nc
| Subject: Re: Briggs Opposed Build 46ci March 28th 2015, 8:05 pm | |
| - 802 Customs wrote:
- That gasket sure is custom. Anyway I may try the no headgasket thing on my 11 horse flatty, let me know how it works cause it sure is easier than shaving down the heads with some glass and lapping compound. Did you remove the governor? What did you do to the cam if anything, and for the timing advance did you just not use a flywheel key?
Someone said they didn't even "deck" the block and head, and have the copper goo on and it works. I'll see. For sure bumps compression. No cam mods, gov removed internally, and no flywheel key. I put lapping compound on the crank and put thre flywheel on, spin the wheel around for 5 min so it makes that much better of a fit, wipe it clean and torque that son of a bi*ch down to 150ft - lbs. - TheBeal wrote:
- Red, have you had any thoughts on converting to a horizontal shaft?
I think it's totally possible, got a horizontal briggs in my junkyard I can take the plates and sump, intake and other things off of. But this is a new engine for my MTD, so not going to convert it. | |
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802 Customs Member
Age : 24 Join date : 2015-01-08 Points : 3714 Posts : 146 Location : Vermont
| Subject: Re: Briggs Opposed Build 46ci March 28th 2015, 8:15 pm | |
| - redlinemotorsportts wrote:
I put lapping compound on the crank and put thre flywheel on, spin the wheel around for 5 min so it makes that much better of a fit, wipe it clean and torque that son of a bi*ch down to 150ft - lbs. Thanks for the tip on the lapping compound, never heard that before. How you liking those craftsman torque wrenches? I bought a chinese 1/2" drive one off craigslist for 5 bucks and it stopped clicking. - redlinemotorsportts wrote:
- I think it's totally possible, got a horizontal briggs in my junkyard I can take the plates and sump, intake and other things off of. But this is a new engine for my MTD, so not going to convert it.
You'll also need to drill a hole for the dipstick, plug the old hole and swap the oil slinger I think. | |
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TheBeal Veteran Member
Age : 30 Join date : 2013-06-06 Points : 5673 Posts : 1402 Location : Central PA
| Subject: Re: Briggs Opposed Build 46ci March 28th 2015, 8:34 pm | |
| - mr.modified wrote:
- Spare engine...ok, shouldn't be an issue then.
And convert to horizontal? Good grief man! He just built a vertical shaft engine, installed a new trans, and got the belt working again! lol. Don't you think he is capable? I have a few oppys that would be more useful converted over horizontal. Id kinda like to see someone else do it before I try and I go and mess it up. lol - Red wrote:
- I think it's totally possible, got a horizontal briggs in my junkyard I can take the plates and sump, intake and other things off of. But this is a new engine for my MTD, so not going to convert it.
Ive seen it done with a 3.5hp briggs, just havnt seen it done to a oppy. I suppose it would be a good opportunity for some custom intake manifolds and dual carbs. Ehh, maybe Ill try it this summer or fall. Dagum, if I had access to a horizontal oppy I take it in a heartbeat... | |
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redlinemotorsportts Moderator
2014 Build-Off Entrant
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Age : 27 Join date : 2013-03-18 Points : 7439 Posts : 3131 Location : raleigh nc
| Subject: Re: Briggs Opposed Build 46ci March 28th 2015, 9:02 pm | |
| - TheBeal wrote:
- mr.modified wrote:
- Spare engine...ok, shouldn't be an issue then.
And convert to horizontal? Good grief man! He just built a vertical shaft engine, installed a new trans, and got the belt working again! lol. Don't you think he is capable?
I have a few oppys that would be more useful converted over horizontal. Id kinda like to see someone else do it before I try and I go and mess it up. lol
- Red wrote:
- I think it's totally possible, got a horizontal briggs in my junkyard I can take the plates and sump, intake and other things off of. But this is a new engine for my MTD, so not going to convert it.
Ive seen it done with a 3.5hp briggs, just havnt seen it done to a oppy. I suppose it would be a good opportunity for some custom intake manifolds and dual carbs.
Ehh, maybe Ill try it this summer or fall.
Dagum, if I had access to a horizontal oppy I take it in a heartbeat... I mean, i can sell you all the parts to convert if you'd like. I mean, if your payed. because ripping a engine apart isnt super easy in the junkyard. Cranks might be shorter too, because a sump area isnt there. | |
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TheBeal Veteran Member
Age : 30 Join date : 2013-06-06 Points : 5673 Posts : 1402 Location : Central PA
| Subject: Re: Briggs Opposed Build 46ci March 28th 2015, 9:32 pm | |
| If I had the $$$$....
I think those parts would be good to have on hand, stashed away, the whole engine even. If only to get running and sell off. What Ive seen around here, horizontal shaft engines sell for much more than vertical shaft engines.
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| Briggs Opposed Build 46ci | |
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