100" Fatvo is this a good idea?
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Tourer
Joined: Nov 2007
Posts: 334
Likes: 2
100" Fatvo is this a good idea?
I'm looking into building a bagger, it's a 90 FLH with a good primary and transmission, everything works electrically and mechanically but the old engine is getting weak. I don't want another 80" Evo. I just spent a few days riding in southern California on a 96" Street Glide and I like the way that bike ran. Basically I want to duplicate it with an Evo era bike.
I've searched all the threads on Ultima's, S&S, etc. and I'm wondering if the Sputhe Fatvo might be a better way to go, assuming I can keep it in budget, brand new bottom end and Ebay cylinders with ported/polished heads and an SE 52mm CV for a mixer. Budget is more or less $7,000 for a complete engine, I'll install it myself.
I've searched all the threads on Ultima's, S&S, etc. and I'm wondering if the Sputhe Fatvo might be a better way to go, assuming I can keep it in budget, brand new bottom end and Ebay cylinders with ported/polished heads and an SE 52mm CV for a mixer. Budget is more or less $7,000 for a complete engine, I'll install it myself.
Road Captain
Joined: Jan 2011
Posts: 518
Likes: 264
From: Pineville, LA
I am building what you speak of right now from scratch. I am going to be using a Southern Motorcycle Works 113" in mine. The motor complete is around $4600 in black and chrome. Google them and call them up. They pre-run and time all the motors before they ship and have a 3 year warranty. The EVO motor has been around a long time. I would not want to build a hybrid like the Fatvo into a bike, but that is me. A good EVO is bulletproof when taken care of.
Ultimate HDF Member
Joined: Jun 2007
Posts: 9,193
Likes: 494
From: Richmond, VA
I would think a 107" or 113" stroker kit tossed in your existing engine with some simple head work and a new carb would make butt loads more power than a Fatvo for about half the 7K budget.
Road Captain
Joined: Jan 2011
Posts: 518
Likes: 264
From: Pineville, LA
Let me add a disclaimer: if I already had a HD Evo that was tired and wore out, I would reuse it. Have it completely torn down and the cases split. Have all the bearings, races, etc replaced and everything cleaned up and fixed. Then, have it built up to a 113" with good, QUALITY parts and use it.
Last edited by cwhite6; May 2, 2011 at 02:32 PM.
Seasoned HDF Member
Joined: Aug 2008
Posts: 5,081
Likes: 2,159
From: Ohio
Stock cases need the spigots bored really thin to accept a Axtell 107" and stock heads need major work to support a 107", I have already looked into it because I wanted stock appearing parts but not worth it.
Can't comment on the Fatvo but my beliefs is a big heavy bike needs more stroke(4 5/8) to create lower end torque and a smaller stroke(4 1/4) large bore engine is a little higher in the rpm range to create power but seeing the Fatvo a perfect fit for a Softail and bounce the rev limiter.
A $3500 Ultima 113 or 127 and have it cleaned up by John Sachs in Florida is a reliable weapon ready to drop in and what I will do next time, this post is just my view on engines looking at power to cost ratio and just a view.
Can't comment on the Fatvo but my beliefs is a big heavy bike needs more stroke(4 5/8) to create lower end torque and a smaller stroke(4 1/4) large bore engine is a little higher in the rpm range to create power but seeing the Fatvo a perfect fit for a Softail and bounce the rev limiter.
A $3500 Ultima 113 or 127 and have it cleaned up by John Sachs in Florida is a reliable weapon ready to drop in and what I will do next time, this post is just my view on engines looking at power to cost ratio and just a view.
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