Ultima Engine Bummer
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Seasoned HDF Member
Joined: Aug 2008
Posts: 5,080
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From: Ohio
Came back from vacation, new set of heads and gaskets had arrived. Started assembly after surviving the return to work and beat down, CNC machining to cast was a rough transition in most areas that need work.
Pulled the valves of old Sachs ported heads and did a mild version of porting following Sachs work, he had them opened up. Satisfied with the port transition and chamber cleanup installed the heads with the engine once again sending out the unmistakable deep exhaust sound of leave this one alone.
Although installing the heads in the bike was a pain in the a$$, with Mike at Ultima standing behind his product and John Sachs in my corner was a booster shot to overcome the head install. Overall picture is there are still some good businessmen in the Harley world
Loose valve seat pic also posted
Pulled the valves of old Sachs ported heads and did a mild version of porting following Sachs work, he had them opened up. Satisfied with the port transition and chamber cleanup installed the heads with the engine once again sending out the unmistakable deep exhaust sound of leave this one alone.
Although installing the heads in the bike was a pain in the a$$, with Mike at Ultima standing behind his product and John Sachs in my corner was a booster shot to overcome the head install. Overall picture is there are still some good businessmen in the Harley world
Loose valve seat pic also posted
Last edited by 1997bagger; Jan 26, 2019 at 11:58 PM.
Stellar HDF Member
Joined: Jan 2013
Posts: 2,747
Likes: 419
From: Vermont
Came back from vacation, new set of heads and gaskets had arrived. Started assembly after surviving the return to work and beat down, CNC machining to cast was a rough transition in most areas that need work.
Pulled the valves of old Sachs ported heads and did a mild version of porting following Sachs work, he had them opened up. Satisfied with the port transition and chamber cleanup installed the heads with the engine once again sending out the unmistakable deep exhaust sound of leave this one alone.
Although installing the heads in the bike was a pain in the a$$, with Mike at Ultima standing behind his product and John Sachs in my corner was a booster shot to overcome the head install. Overall picture is there are still some good businessmen in the Harley world
Loose valve seat pic also posted
Pulled the valves of old Sachs ported heads and did a mild version of porting following Sachs work, he had them opened up. Satisfied with the port transition and chamber cleanup installed the heads with the engine once again sending out the unmistakable deep exhaust sound of leave this one alone.
Although installing the heads in the bike was a pain in the a$$, with Mike at Ultima standing behind his product and John Sachs in my corner was a booster shot to overcome the head install. Overall picture is there are still some good businessmen in the Harley world
Loose valve seat pic also posted
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Seasoned HDF Member
Joined: Aug 2008
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From: Ohio
One thing that I'm liking with the new heads is they have not been milled and at stock compression, the bumped compression will allow the bigger cams to work better but this engine will actually start without compression releases on, the bumped compression was rough on the starter even with compression releases.
Hopefully many miles ahead with over sized Briggs and Straten
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Seasoned HDF Member
Joined: Aug 2008
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From: Ohio
Thanks, I'm going to look up the gray beard Shovel riders this weekend and reclaim my turf or go bar hopping, most likely both.
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Joined: Jan 2013
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From: Vermont
Off Sachs port work like I mentioned, those guys know what they are doing and you just don't start carving heads without guidelines.
One thing that I'm liking with the new heads is they have not been milled and at stock compression, the bumped compression will allow the bigger cams to work better but this engine will actually start without compression releases on, the bumped compression was rough on the starter even with compression releases.
Hopefully many miles ahead with over sized Briggs and Straten
One thing that I'm liking with the new heads is they have not been milled and at stock compression, the bumped compression will allow the bigger cams to work better but this engine will actually start without compression releases on, the bumped compression was rough on the starter even with compression releases.
Hopefully many miles ahead with over sized Briggs and Straten
Last edited by Bumpandrun; Aug 18, 2015 at 08:46 PM.
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Seasoned HDF Member
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From: Ohio
Stock unmilled heads. So u bumped up the Pistons for comp? How bad was the head to remove......move the frame a little when I have it apart? Not a big job for me. Briggs......blew up one of those this week on ALKY. LOL. SO Briggs and Straton not a favorite of mine this week. Lol. Oh and don't worry well aware what is involved porting heads.......most guys I see doing them at home end up worse flow than they started. I don't have time to sit with a flow bench for weeks .... Next time around I will go that route
Had to drill 2 holes down thru the boxed section of frame to take the rocker bolts out, altered 2 allen wrenches to get the 4 lower rocker cover box bolts out. Had to bend a extension magnet in a 90 degrees to put the lower rocker cover bolts back in and one little turn at a time 4 bolts
If this engine lets go it will go for 32 cents a pound and the baby Briggs 89" comes off the shelf.
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Joined: Jul 2011
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From: Boston, MA
You're braver than I am.
I could not be ballsy enough to drill not one but two holes in my frame. Ugh.
-Tom
I could not be ballsy enough to drill not one but two holes in my frame. Ugh.
-Tom
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Seasoned HDF Member
Joined: Aug 2008
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From: Ohio
Originally Posted by Tee⋁14313796
You're braver than I am.
I could not be ballsy enough to drill not one but two holes in my frame. Ugh.
-Tom
I could not be ballsy enough to drill not one but two holes in my frame. Ugh.
-Tom
Road Captain
Joined: Sep 2012
Posts: 675
Likes: 32
From: Massachusetts
bummer on the meltdown, but good on Ultima for making it right.
Figures....I was out your way (northern OH) a couple weeks ago, was gonna shoot you a PM, but figured would just be a tease cause the bike was 800 miles away back in Boston.
you ever get that thing on a dyno? i keep putting off actually dialing mine in completely (its close, but I bet theres still more in it), partially because it'll still pucker me up pretty good through the first couple gears.
Figures....I was out your way (northern OH) a couple weeks ago, was gonna shoot you a PM, but figured would just be a tease cause the bike was 800 miles away back in Boston.
you ever get that thing on a dyno? i keep putting off actually dialing mine in completely (its close, but I bet theres still more in it), partially because it'll still pucker me up pretty good through the first couple gears.