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  #1  
Old 05-01-2019, 06:34 AM
Bill_H's Avatar
Bill_H Bill_H is offline
 
Join Date: Aug 2010
Location: Peel, AR
Posts: 1,765
Default 912 Big Bore and Fuel Injection add-ons ?

I can't find any mention of these guys in this forum - http://badasspowersports.com/

They offer engine mods for the 912 engine, including the following.

Reference 912ULS:
100 hp
1352 cc
10.8:1 CR

They have two big-bore kits, billet cylinders:
114 hp
1483 cc
10.5:1 CR
still 91 octane fuel
no machining

120-130hp
1621 cc
Any compression ration from 7:1 to 11:1.
91 octane fuel but 93 or 100LL required at 11:1.
Requires crank and cyl head machining.

Add-on fuel injection kits, three types (with dual fuel pumps)

Add on turbocharger. Replacement camshafts.

They don't show pricing. Located between Calgary and Edmonton. Anyone have any experience with them?
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  #2  
Old 05-01-2019, 06:54 AM
AZLeeJay AZLeeJay is offline
 
Join Date: Dec 2013
Location: Phoenix
Posts: 111
Default

You might try searching or posting on the CTFlyer.com site, I know of some folks that have done this with their Flight Designs.
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  #3  
Old 05-01-2019, 09:22 AM
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Mark33 Mark33 is offline
 
Join Date: May 2010
Location: Baton Rouge, La.
Posts: 556
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This is a great upgrade to the 912. Itís basically an EFII system plus other options such as big-bore, cam, turbo, etc., or any combination there of. These upgrades are very popular with the STOL/backcountry guys. Iím planning on a Rans S-7 build after Iím finished with my current RV-7 project and Iím definitely going with their 912 EFII/turbo. Theyíre getting 150+hp out of the turbo version with only moderate boost so that they can keep the reliability in place. Theyíre getting more horsepower out of their 912 than Rotax is with the 915...and theyíre keeping it reliable. Also, regardless of what configuration you might decide to go with, itís usual always lighter than the factory setup. Give Jason a call. Heís a good guy and he can tell you all about what they do and offer.

http://badasspowersports.com/
https://www.edgeperformance.no

Mark
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  #4  
Old 05-01-2019, 12:44 PM
Dave12 Dave12 is offline
 
Join Date: Oct 2010
Location: Elkton, Md.
Posts: 1,409
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Governor Valcik up in Maine just put big bore jugs on his 912. He will chime in shortly I think. He seems to like it so far, but just started flying behind them.
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N588DF RV12 #336 Sold
N73DF RV12 #244 Flying Sold
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  #5  
Old 05-01-2019, 12:57 PM
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Mike S Mike S is offline
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Join Date: Sep 2005
Location: Dayton Airpark, NV A34
Posts: 14,650
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The Zipper kits seem to be well regarded in the Kitfox, and Rans communities.

Got a few buddies flying them, lots of smiles.

http://zipperbigbore.com/parts/
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Mike Starkey
VAF 909

Rv-10, N210LM.

Flying as of 12/4/2010

Phase 1 done, 2/4/2011

Sold after 240+ wonderful hours of flight.

"Flying the airplane is more important than radioing your plight to a person on the ground incapable of understanding or doing anything about it."
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  #6  
Old 05-01-2019, 07:21 PM
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Dvalcik Dvalcik is offline
 
Join Date: Jul 2011
Location: Ellsworth, ME
Posts: 810
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Quote:
Originally Posted by Bill_H View Post
I can't find any mention of these guys in this forum - http://badasspowersports.com/

They offer engine mods for the 912 engine

They don't show pricing. Located between Calgary and Edmonton. Anyone have any experience with them?
Bill I just installed the Big Bore kit.

114 hp
1483 cc
10.5:1 CR
still 91 octane fuel

I just have 5 hours on it but love the performance. Keep in mind I run a 3 blade and I was only turning 4900 on takeoff. With the prop pitch the same I now see 5150 and showing 1500 ft per min at 75 kts. with a level cruise at 120ish













Graph for before and after performance numbers. Not an exact comparison but close with temp and density alt with no change in pitch. Bottom line I am happy



https://www.facebook.com/16291705640...303137?sfns=mo

Jason provided great customer service
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David
EAA 1434 KBST
Belfast, ME
david@rv12pilot.com
2019 VAF Supporter


RV12 #568 EAB
* Started 9/30/2011
* 1st flight 8/30/12


http://www.rv12pilot.com
https://www.youtube.com/user/dvalcik

Last edited by Dvalcik : 05-09-2019 at 08:06 PM.
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  #7  
Old 05-04-2019, 02:43 PM
Dave12 Dave12 is offline
 
Join Date: Oct 2010
Location: Elkton, Md.
Posts: 1,409
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Your shop and tools look so organized.
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N588DF RV12 #336 Sold
N73DF RV12 #244 Flying Sold
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  #8  
Old 05-14-2019, 11:10 AM
marked marked is offline
 
Join Date: Nov 2018
Location: Atlanta, ga
Posts: 4
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Dvalcik,

Have you logged much time in yours since the upgrade? What kind of performance are your seeing? What are the cruise speeds? Any unexpected issues? What is the fuel burn you are seeing?

Thanks
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