Engine upgrades?
Outstanding HDF Member
Joined: Jul 2007
Posts: 2,609
Likes: 1
From: Indy area
Engine "over-run" is driving the crankshaft by the rear wheel upon deceleration. There are only two ways that would be a problem. One is by downshifting and dumping the clutch hard without matching the engine speed to what it will immediately become. The other way is to downshift and release the clutch in any manner which would cause the engine to rev past redline. If you use engine-braking reasonably, "over-run" cannot be a problem. As far as lugging, that would be harder on the piston skirts, wrist-pins, and con-rod bearings, in that order, than on the crankshaft. It should be, at any rate.
Road Master
Joined: May 2007
Posts: 851
Likes: 5
From: Mitchellville, Ia.
Ok,
So I've been doing some research on engine upgrades for my '07 FXDL. I'm looking at bumping to 103"-107", just because I don't feel like boring the cases right now. I'm also looking for 110/110 to 120/120 range from this build, which from what I have read, is very doable. I want good, reliable, long lasting power from this build. Plus I'm going to attempt to do the parts swap myself. I am an aircraft mechanic, so it's not like I can't turn wrenches.
From what I'm seeing, alot of you like Head Quarters, Hillside, and GMR. I've also checked with Zipper's since I have the tmax with a/t. I figured it would be easy since all the components are theirs. But, I'm finding the price tag a bit steeper than I expected. Especially for a 103". Plus the HP/TQ #'s are on the bottom side of the range I want.
I've already conceded to the fact that I'll be getting the fatcat, but what else do I need? Clutch upgrades? Driveline upgrades? Intake? It doesn't look like everyone uses a larger TB, is it needed? Injectors?
What am I missing? Anything to look for or out for?
Any and all advice and recommendations would be greatly appreciated! Including your preferred vendor. Thanks in advance!
Mike
So I've been doing some research on engine upgrades for my '07 FXDL. I'm looking at bumping to 103"-107", just because I don't feel like boring the cases right now. I'm also looking for 110/110 to 120/120 range from this build, which from what I have read, is very doable. I want good, reliable, long lasting power from this build. Plus I'm going to attempt to do the parts swap myself. I am an aircraft mechanic, so it's not like I can't turn wrenches.
From what I'm seeing, alot of you like Head Quarters, Hillside, and GMR. I've also checked with Zipper's since I have the tmax with a/t. I figured it would be easy since all the components are theirs. But, I'm finding the price tag a bit steeper than I expected. Especially for a 103". Plus the HP/TQ #'s are on the bottom side of the range I want.
I've already conceded to the fact that I'll be getting the fatcat, but what else do I need? Clutch upgrades? Driveline upgrades? Intake? It doesn't look like everyone uses a larger TB, is it needed? Injectors?
What am I missing? Anything to look for or out for?
Any and all advice and recommendations would be greatly appreciated! Including your preferred vendor. Thanks in advance!
Mike
Take a look at the R&R Cycle stage 4 and stage 5 Stuff, it's the easiest starting, coolest running most consistant stuff I've seen out there. If you are on a budget the stage 4- 103" is a very fast revving package that will get you into the "wow" zone at about 116-118 torque range. The stage 5 will require a larger TB but will put you north of 120. Very reliable, nothing obnoxious.
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Road Captain
Joined: Jul 2007
Posts: 682
Likes: 1
From: Wichita, KS
Thanks for the tip, I sent them an email.
I talked to Scott, Steve, and Kevin today. All great guys, and very knowledgeable. I've got a couple more to talk to yet. I know this much, they all gave me a lot to chew on! Thanks again all!
Mike
I talked to Scott, Steve, and Kevin today. All great guys, and very knowledgeable. I've got a couple more to talk to yet. I know this much, they all gave me a lot to chew on! Thanks again all!
Mike
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