HD EVO engine rebuild program
Tourer
Joined: Nov 2004
Posts: 255
Likes: 0
From: Colorado Springs
RE: HD EVO engine rebuild program
I had a 97 Dyna Convertible that when I sold ot had 135,000 miles on it. The only thing I did was change the lifters once at 60,000 miles. Took the heads off at 100,000 thinkin it'll be due for a rebuild but the lower end and valveswere still with-in specs. But I made sure I changed the oil at every 2000 miles on the dot. Getting work done also from a HD factory tech is well worth it if you are in god with ther dealer.
Tourer
Joined: Aug 2006
Posts: 412
Likes: 28
From:
RE: HD EVO engine rebuild program
ORIGINAL: jokenroll
With all due respect, I disagree. How do we know that "he is NOT going to machine anything as good as HD"?
The factory works with numbers, shops work with people. They want you to come back. Besides, is there special patented secret equipment only HD can use to machine cases? If "a factory produced engine" was better than anything else, why would so many people change so much inside of it? Don't we know that Wiseco pistons are better than the stock ones (that's what you get in the VTwinMfg kit)? Isn't it obvious that S&S reed breather is better than the stock rotating one?
Warranty is definitely a plus, but is it really worth it just for a year? So what, I used to have a car with a 5yr warranty, and it spent more time in the shop than on the streets. I got rid of that crap.
Isn't a major part of the fun making your own and truly unique bike? Mostly yourself?
IMHO, If you just want everything factory, and rely on everything factory, you'll be better off with Jap bikes. Factory wise, they're way more reliable.
BTW, that was one of the main reasons why I switched to HD - the opportunity to have YOUR OWN bike, made by yourself! You are making your bike for yourself, someone else is making your bike for money, I guess there is the difference.
ORIGINAL: blueglide88
I had my motor done at around 147,000 miles. In my opinion, it was money very well spent. You get a factory produced engine. Despite what your local wrench says, he is NOT going to machine anything as good as HD can at the factory. You also get a 1 yr warranty.
I had my motor done at around 147,000 miles. In my opinion, it was money very well spent. You get a factory produced engine. Despite what your local wrench says, he is NOT going to machine anything as good as HD can at the factory. You also get a 1 yr warranty.
The factory works with numbers, shops work with people. They want you to come back. Besides, is there special patented secret equipment only HD can use to machine cases? If "a factory produced engine" was better than anything else, why would so many people change so much inside of it? Don't we know that Wiseco pistons are better than the stock ones (that's what you get in the VTwinMfg kit)? Isn't it obvious that S&S reed breather is better than the stock rotating one?
Warranty is definitely a plus, but is it really worth it just for a year? So what, I used to have a car with a 5yr warranty, and it spent more time in the shop than on the streets. I got rid of that crap.
Isn't a major part of the fun making your own and truly unique bike? Mostly yourself?
IMHO, If you just want everything factory, and rely on everything factory, you'll be better off with Jap bikes. Factory wise, they're way more reliable.
BTW, that was one of the main reasons why I switched to HD - the opportunity to have YOUR OWN bike, made by yourself! You are making your bike for yourself, someone else is making your bike for money, I guess there is the difference.
The ability to put in aftermarket parts can be a plus if you know which components work and which ones don't and what combination to use. But in the long run, deviating far from stock will shorten your engine life. How many abig bore/big cam engines do you know that have 147,000 miles on them? I don't know of any. More power to you if you want to go that route, but I know I spent my money well.
Tourer
Joined: Aug 2006
Posts: 412
Likes: 28
From:
RE: HD EVO engine rebuild program
ORIGINAL: blueglide88
Most local shops have a Bridgeport as their milling/boring machine. Now you can do some nice work on a Bridgeport, I've spent 15 yrs working on them, but you'll NEVER hold tolerances as close as the CNC machines that HD has at the factory. There is actually a great deal of know how and science behind the tooling that manufacturers use to assureproper tolerances. Tool wear and replacement, proper fixturing, speeds and feeds, positive or negative rake cutters, etc. allplay a partin the final product. Ask you local wrench about hisCMM machine, and he'll wonder what language your talking. Have you taken the factory tour? It's pretty impressive. Now if your local wrench has the money (big bucks) and has purchased the latest in CNC technology, he'll do a good job. But he will not repeatedly produce the same tolerances that a factory will. He does not have the quality control to do it.
The ability to put in aftermarket parts can be a plus if you know which components work and which ones don't and what combination to use. But in the long run, deviating far from stock will shorten your engine life. How many abig bore/big cam engines do you know that have 147,000 miles on them? I don't know of any. More power to you if you want to go that route, but I know I spent my money well.
ORIGINAL: jokenroll
With all due respect, I disagree. How do we know that "he is NOT going to machine anything as good as HD"?
The factory works with numbers, shops work with people. They want you to come back. Besides, is there special patented secret equipment only HD can use to machine cases? If "a factory produced engine" was better than anything else, why would so many people change so much inside of it? Don't we know that Wiseco pistons are better than the stock ones (that's what you get in the VTwinMfg kit)? Isn't it obvious that S&S reed breather is better than the stock rotating one?
Warranty is definitely a plus, but is it really worth it just for a year? So what, I used to have a car with a 5yr warranty, and it spent more time in the shop than on the streets. I got rid of that crap.
Isn't a major part of the fun making your own and truly unique bike? Mostly yourself?
IMHO, If you just want everything factory, and rely on everything factory, you'll be better off with Jap bikes. Factory wise, they're way more reliable.
BTW, that was one of the main reasons why I switched to HD - the opportunity to have YOUR OWN bike, made by yourself! You are making your bike for yourself, someone else is making your bike for money, I guess there is the difference.
ORIGINAL: blueglide88
I had my motor done at around 147,000 miles. In my opinion, it was money very well spent. You get a factory produced engine. Despite what your local wrench says, he is NOT going to machine anything as good as HD can at the factory. You also get a 1 yr warranty.
I had my motor done at around 147,000 miles. In my opinion, it was money very well spent. You get a factory produced engine. Despite what your local wrench says, he is NOT going to machine anything as good as HD can at the factory. You also get a 1 yr warranty.
The factory works with numbers, shops work with people. They want you to come back. Besides, is there special patented secret equipment only HD can use to machine cases? If "a factory produced engine" was better than anything else, why would so many people change so much inside of it? Don't we know that Wiseco pistons are better than the stock ones (that's what you get in the VTwinMfg kit)? Isn't it obvious that S&S reed breather is better than the stock rotating one?
Warranty is definitely a plus, but is it really worth it just for a year? So what, I used to have a car with a 5yr warranty, and it spent more time in the shop than on the streets. I got rid of that crap.
Isn't a major part of the fun making your own and truly unique bike? Mostly yourself?
IMHO, If you just want everything factory, and rely on everything factory, you'll be better off with Jap bikes. Factory wise, they're way more reliable.
BTW, that was one of the main reasons why I switched to HD - the opportunity to have YOUR OWN bike, made by yourself! You are making your bike for yourself, someone else is making your bike for money, I guess there is the difference.
The ability to put in aftermarket parts can be a plus if you know which components work and which ones don't and what combination to use. But in the long run, deviating far from stock will shorten your engine life. How many abig bore/big cam engines do you know that have 147,000 miles on them? I don't know of any. More power to you if you want to go that route, but I know I spent my money well.
Road Captain
Joined: Nov 2007
Posts: 517
Likes: 6
From: Ottawa, ON
RE: HD EVO engine rebuild program
ORIGINAL: blueglide88
Most local shops have a Bridgeport as their milling/boring machine. Now you can do some nice work on a Bridgeport, I've spent 15 yrs working on them, but you'll NEVER hold tolerances as close as the CNC machines that HD has at the factory. There is actually a great deal of know how and science behind the tooling that manufacturers use to assureproper tolerances. Tool wear and replacement, proper fixturing, speeds and feeds, etc. Ask you local wrench about his inspection methods, and he'll wonder what language your talking. Have you taken the factory tour? It's pretty impressive. Now if your local wrench has the money (big bucks) and has purchased the latest in CNC technology, he'll do a good job. But he will not repeatedly produce the same tolerances that a factory will. He does not have the quality control to do it.
The ability to put in aftermarket parts can be a plus if you know which components work and which ones don't and what combination to use. But in the long run, deviating far from stock will shorten your engine life. How many abig bore/big cam engines do you know that have 147,000 miles on them? I don't know of any. More power to you if you want to go that route, but I know I spent my money well.
Most local shops have a Bridgeport as their milling/boring machine. Now you can do some nice work on a Bridgeport, I've spent 15 yrs working on them, but you'll NEVER hold tolerances as close as the CNC machines that HD has at the factory. There is actually a great deal of know how and science behind the tooling that manufacturers use to assureproper tolerances. Tool wear and replacement, proper fixturing, speeds and feeds, etc. Ask you local wrench about his inspection methods, and he'll wonder what language your talking. Have you taken the factory tour? It's pretty impressive. Now if your local wrench has the money (big bucks) and has purchased the latest in CNC technology, he'll do a good job. But he will not repeatedly produce the same tolerances that a factory will. He does not have the quality control to do it.
The ability to put in aftermarket parts can be a plus if you know which components work and which ones don't and what combination to use. But in the long run, deviating far from stock will shorten your engine life. How many abig bore/big cam engines do you know that have 147,000 miles on them? I don't know of any. More power to you if you want to go that route, but I know I spent my money well.
Big Kahuna HDF Member
Joined: Mar 2007
Posts: 29,598
Likes: 19
From: Oregon
RE: HD EVO engine rebuild program
You shouldn't, imho, bore a cylinder all the way out with any of those machines. They don't leave the proper texture for ring seating and piston/ring lubrication. You need to hone the cylinders.
The hone will get the cylinder round and straight, and give the proper "grit" to it every time. I'm talking about a proper rigid hone and not of course a deglazing hone.
I used to own an automotive machine shop and we could get the cylinder round and straight enough that you couldn't read variations with a dial bore micrometer. We also got the proper finish grit.
We bored cylinders a touch small and honed them to exact fit and cross-hatch. We also removed all tool marks from boring and left the proper surface for the rings and pistons to seat, break in and lubricate.
I think it matters most how much the machine operator cares about the quality of work. You could actually bore the cylinder all the way with just a Van Normon or Sunnen rigid hone, usingincreasingly finer grit and get a perfect job. You just gotta know how to read a mic and have the training and practice.
Thread
Thread Starter
Forum
Replies
Last Post
MilsurpShooter
General Harley Davidson Chat
3
Oct 29, 2018 07:20 AM
