Motor Build?!?!?!?!?
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Tourer
Joined: May 2010
Posts: 421
Likes: 8
From: Easley, SC
Motor Build?!?!?!?!?
I have been talking about doing a 103 build on the forum for a while. I only have a 2000 dollar budget and couldn't get respectable numbers in my opinion. Well a guy turned me onto a local builder and his price is phenomenal. This almost seems unrealistic but we paint for some local dealors (harley, victory, and local bike builder named reds rods) and im gonna do some some advertising for him but still. This is what i get for 2000 all installed tell me what you think and if i should make any changes as far as specs go and what my horse power numbers should be.
-stock jugs bored to 103ci with wiesco pistons
-stock heads new valves and blue printing chambers to cams specs
-s&s 640 cams
-he said my mechanical compression would be 11 to 1 but after the cams my corrective compression would be about 9.3 to 1
-compression releases
-throttle body not sure size or brand
-adjustable push rods
dyno tune but its actually 200 extra or maybe more its 100 an hr
now with that said i already have a v&h pro pipe, power commander, and se heavy breather- thats a heck of a deal considering the cheapest ive found for the same stuff in 3400 i know people say you get what you pay for but this guy is a huge builder in my area and in the only certified dyno in my area other than local harley shops. he estimated 115 hp. Im definitely going to do it i just wonder if theres any cam ideas or other ideas to make more power. thanks guys
-stock jugs bored to 103ci with wiesco pistons
-stock heads new valves and blue printing chambers to cams specs
-s&s 640 cams
-he said my mechanical compression would be 11 to 1 but after the cams my corrective compression would be about 9.3 to 1
-compression releases
-throttle body not sure size or brand
-adjustable push rods
dyno tune but its actually 200 extra or maybe more its 100 an hr
now with that said i already have a v&h pro pipe, power commander, and se heavy breather- thats a heck of a deal considering the cheapest ive found for the same stuff in 3400 i know people say you get what you pay for but this guy is a huge builder in my area and in the only certified dyno in my area other than local harley shops. he estimated 115 hp. Im definitely going to do it i just wonder if theres any cam ideas or other ideas to make more power. thanks guys
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Joined: Dec 2007
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Very possible to realize 115 hp from that, BUT, me thinks the torque curve will not be what you'd really want, as the .640 does not have a hard strike whatsoever, in comparison to other cams we use.
Jeremy, from H-D of Bowling Green, KY, just tuned a clients 107"er with a little(smallest cam he makes)Wood 6, our Stage III Heads, OE t/body, and a D&D Fatcat, to 115/121.
Grabs torque off the bottom and just doesn't let go of it.
Our American Iron Magazine build, 98", pushed out 117 hp, thru a very sub-standard air filter. Went 119.7 thru ours.
A Wood 8, with a head that moves around 165 cfm @ 10" @ .600 lift, good pipe, etc, will gobble that .640 combo up for lunch.
May want to do some re-thinking..............
Scott
Jeremy, from H-D of Bowling Green, KY, just tuned a clients 107"er with a little(smallest cam he makes)Wood 6, our Stage III Heads, OE t/body, and a D&D Fatcat, to 115/121.
Grabs torque off the bottom and just doesn't let go of it.
Our American Iron Magazine build, 98", pushed out 117 hp, thru a very sub-standard air filter. Went 119.7 thru ours.
A Wood 8, with a head that moves around 165 cfm @ 10" @ .600 lift, good pipe, etc, will gobble that .640 combo up for lunch.
May want to do some re-thinking..............
Scott
HDF Community Team
Joined: Jun 2006
Posts: 12,776
Likes: 2,607
From: san antonio
IMHO, you won't be happy with the 640 cams, regardless of the cost of the build; strong peak HP but no TQ until you pass 3000 rpms. You have a larger TB bringing more A/F in and a high lift, longer duration cam but stock heads in between; bottleneck. Stick with cams that will produce that 9.3 corrected CR and 185-190psi cranking compression with lift betwen .550"-.570" and intake close events between 38*-42*. Cams like Andrewe 48, 54, TMan 550, Woods 555 or similar. Your static CR will be about 10:1 and your numbers should easily be in the 100/100 neighborhood. YOu didn't mention roller rockers or heavier valve springs to compliment the 640 cams?? 
Like a couple of us posted in response to your previous post; you have a solid stage I base to build on, all you really need to wake things up is the head blueprinting and cams. An easy DIY project that could be done for about $1000 if you retain the 96" configuration and about $1500 if you go 103" for the additional cost of boring and pistons.
I am not a pro like Scott but do agree that a rethink is in order.
Like a couple of us posted in response to your previous post; you have a solid stage I base to build on, all you really need to wake things up is the head blueprinting and cams. An easy DIY project that could be done for about $1000 if you retain the 96" configuration and about $1500 if you go 103" for the additional cost of boring and pistons.
I am not a pro like Scott but do agree that a rethink is in order.
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Tourer
Joined: May 2010
Posts: 421
Likes: 8
From: Easley, SC
I don't really 2 up ride and I love drag racing he figured that was the best cam for the build because we gotta keep it in budget and he gets the best deal on s&s cams.... Is there another s&s CaM you would prefer? Let's call it a street and strip quarter mile cam.
HDF Community Team
Joined: Jun 2006
Posts: 12,776
Likes: 2,607
From: san antonio
I don't really 2 up ride and I love drag racing he figured that was the best cam for the build because we gotta keep it in budget and he gets the best deal on s&s cams.... Is there another s&s CaM you would prefer? Let's call it a street and strip quarter mile cam.
Thread Starter
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Tourer
Joined: May 2010
Posts: 421
Likes: 8
From: Easley, SC
Ill keep you guys posted. First of all let me say I wish hillside was closer. Second I dont want to get out ran by some guy with a stage 4 screaming eagle kit that makes 105hp because a bad cam decision so i am very open to ideas. Originally I was going to go with the woods 555 cams but the builder talked me out of it. I trusted his judgement but only because he knows more than me. Just if you give me ideas please give me an exact cam when you put cam specs i have problems finding a cam in that spec thanks (i did see the ones listed) I am going to let him know about your cam ideas when I meet up with him friday. Thanks
Also I dont know anything about heads or head work but 1 guy posted I would have a bottle neck effect with my stock heads but as I dont know much I could be very wrong but I though him changing valves (to bigger ones) and blueprinting the chambers was working the heads making them not "stock" at all... from what he said they would be just as good as buying se or s&s heads. So i was figuring the bottle neck effect wouldn't be an issue.
Also I dont know anything about heads or head work but 1 guy posted I would have a bottle neck effect with my stock heads but as I dont know much I could be very wrong but I though him changing valves (to bigger ones) and blueprinting the chambers was working the heads making them not "stock" at all... from what he said they would be just as good as buying se or s&s heads. So i was figuring the bottle neck effect wouldn't be an issue.
Last edited by HDCrossbones09; May 22, 2011 at 07:35 PM. Reason: forget some things
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Road Captain
Joined: Mar 2008
Posts: 712
Likes: 55
From: Punta Gorda, Florida
In that case, my advice would be to go out an get yourself a Ducati 1098, MV Agusta F4, Suzuki Hayabusa or a Kawasaki Ninga. You'll increase that guy's 105HP by at least 60% with a 25% weight reduction, all with a stock bike. If you want to keep your Harley, take your engine apart, or have someone do it for you, send your cylinders and heads up to Hillside,or any of the other machine shops that come on here,tell them what you want in terms of performance/power band, they'll recommend a cam and machine the heads to match. They'll send your cyclinders (107") and heads back with forged Wiseco pistons, more than likely already installed in the cylinders. You'll be able to outrun that guy's 105 HP Harley, but you still won't be able to touch most of the stock Japanese and Italian motorcyles on the road. There's Harley speed and then there's real speed. Good luck in your venture.
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Thread Starter
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Tourer
Joined: May 2010
Posts: 421
Likes: 8
From: Easley, SC
I already have a builder and a build it will start June 4 and be done at the latest 2 weeks but were talking cams. I had a ninga lol and traded it for my xbones thanks though. Still torn between cams wish me luck!
Road Warrior
Joined: Dec 2008
Posts: 1,733
Likes: 38
From: Linden, NC
Personally, I think you'd be happier with the Andrews TW54's set up at 10.0:1. With that set up, you'll still achieve 100+ tq/hp in a 103". Just my honest opinion.
Good luck whichever way you decide to go.
Good luck whichever way you decide to go.
Last edited by Weevil; May 23, 2011 at 08:06 AM.