When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.
Engine Mechanical TopicsDiscussion for motor builds, cams, head work, stripped bolts and other engine related issues. The good and the bad. If it goes round and around or up and down, post it here.
Hello to all...
Finally decided to build up my 80” fxlr. Went back and forth on small things so just took the plunge. Just got the heads and cylinders off this morning thanks to a hiccup from the frame mounted key ignition. Got that out of the way now back on track.
My plans are staying at 80” and going to 10.7/10.8:1, dual port heads worked by Sams in Charleston SC, port matched manifold, Woods W6HF cam, Woods lifters, mik48 carb, adj rods, baisley rockers, Daytona ignition, Woods 325 filter and RB Racing LSR 2-1 turnout. Maybe some Velcro if strap to keep my 165 lb *** on the bike once tuned.
Wanted to hear from anyone on yays and Mays of the build. Or general input. Pretty pumped to hear the heavy idle this summer finally.
Preciate it. See ya.
you might want to reconsider your carb size,,,the 48 is pretty big,,,,if i were you i woud try to get my hands on a couple of laoners first before you plop down the cash on the 48. try the 42 first and if it looks like it needs more go to the 45,,,,i have a real hard time believing that a 48 wont be too big,,,,,the 45's can feed 100 inch and larger engines just fine,,,,other than that make sure that you have a competant tuner set ip up correctly for you.
marco
Preciate the advice. It seemed pretty large to me too. Only reason I stuck with it was because Bob Woods said that was the carb I needed after talking with him about the build. The bike will make 3-4 hr runs one way and that's the threshold for it. I was mainly building it for a max hp and tq bike to ride to work and take out around town on weekends. I did however want to keep some street manners so he put me onto the W6HF instead of the W9b or the Andrews ev-72. It would have felt like a cr-500 with those bumpsticks but street riding would have gotten old I'm sure. I could always start with a 45 and have it modded pretty good if I need more considering you said they easily support larger cubic inch builds.
Thanks again.
Lots of experience here with 80"ers. 10.8:1 is way too much for the w6hf. Perfect for the W8 which is still a great street cam. A Mik 45 might even be a little too much. I've always ran S&S E with my Evo builds.
My w8 build was Hillside stage II heads, S&S E carb with ThunderJet, Wiseco 11:1 .030" pistons, Dynatek ignition and an RB LSR 2-1. There is no need to dual plug an Evo head... Unlike a performance shovel head... The real power band really didn't hit till 3200 rpm but kept climbing even at 6500rpm... 97/96. Went to a chain drive and eventually sheared the crank pin... One more thing you want to consider is a gear change to 3:37@1:1. I also installed a 6 speed to bring down the rpm's cruising in 6th gear.....
Last edited by 98hotrodfatboy; Feb 17, 2018 at 01:29 PM.
Well I guess 10.5:1 may be better suited for that cam. I am torn between cams. As crazy as it sounds I am also seeking a healthy lope with the idle. I know for a fact that Andrews cams can give me that sound...I was looking at the ev59 also. That or the 72 with anything over 10.5:1 would be a wild ride. The bike already weighs nothing and it is geared at 3:37.
Maybe I should go back with original plan and have Scott at Hillside build my 124 for it aha.
One question - what year is the bike. Some earlier cases liked to crack around the tappet blocks after you built them too much. If I remember, 89-90ish was bad and there were also concerns of the main race (steel insert) separating and leaking. We replaced a lot of 1990 cases back in the day.
Also, that's pretty high on the squeeze.
Last edited by Ed Ramberger; Feb 17, 2018 at 09:38 PM.
Building around a static comp is fine but if you want the performance you are looking for, the cam needs to be matched to the static comp for optimal performance. So the Woods W6hf tops out @10.2:1 and the 2 Andrews cams that you are referencing need 10.8 and 11.2:1 to satisfy the bleed off of the cam.... And Ed was correct about the cases... What year?
It is a 93 but I am having second thoughts about building it up so strong. For what it is I may just have tman do the work and throw in his 625 cam and modify the cv. It will be so much cheaper and still plenty for a light bike, light rider and fun gearing. This will save me the headache of timing issues and fuel, street manners, dependability and COST. I would rather put a bigger build into a softail or custom bike. Brainstorming these builds is never easy.
This could save at least $500 on the carb and $400+ on the roller rockers, which would have been needed with the W6 at that lift. Hopefully tuning wont be too bad. The initial heat cycles, break in and tuning has me nervous though
7 Surprising Harley-Davidson Products that Are Not Motorcycles
Slideshow: The bar-and-shield logo shows up on far more than motorcycles, some of the company's most unexpected products have nothing to do with riding.
Slideshow: From the troubled AMF years to modern misfires, these bikes earned reputations for reliability issues, questionable engineering, or disappointing performance.
Crazy Bunderbike Build Looks Amazing, But Is It Impossible to Ride?
Slideshow: The Swiss custom shop has taken a Harley Softail and stretched it into something so long and low that it looks closer to a rolling sculpture than a conventional motorcycle.
Engraved Rebellion: Inside Bundnerbike's Glam Rock II
Slideshow: A standard cruiser becomes an intricate metal canvas in the hands of a Swiss custom house known for pushing Harley-Davidson platforms far beyond their factory brief.
Slideshow: Harley-Davidson's challenges aren't abstract; they show up in dropping shipments, shrinking dealer traffic, and strategic decisions that aren't yet translating into growth.
Hot 80” build
