103 Heads
Thread Starter
|
Tourer
Joined: Aug 2009
Posts: 474
Likes: 5
103 Heads
Well, I just wanted to get some opinions. My dad said opinions are like a$$holes, everyone has one.
Here's the story. I had been having problem with hot starts ever since I upgraded my 96 to a 103 and had 255 cams put on it. It is tuned correctly, I believe. I decided to pull the heads and have ACRs (automatic compression releases for you in rio linda) drilled and placed on the bike. I took them to my local dealer who has contact with the machine shop that does them for HD. $150 for drilling. I was also given the option of having them ported and polished as well as drilled for about $525. I decided not to put the extra money into it and just get drilled (the heads, $mart@ss).
Today, I find out that the machine shop screwed up and ported and polished the heads as well as drilling them. The dealer said same price, $150.
What would you do, keep the 255 cams and just ride it? Have it re-tuned? Do something else? ( forgot to mention I am riding with V&H Vance & Hines true duals and Monster Ovals)
Like I said, I am looking for opinions, not a$$holes.
Thanks.
Here's the story. I had been having problem with hot starts ever since I upgraded my 96 to a 103 and had 255 cams put on it. It is tuned correctly, I believe. I decided to pull the heads and have ACRs (automatic compression releases for you in rio linda) drilled and placed on the bike. I took them to my local dealer who has contact with the machine shop that does them for HD. $150 for drilling. I was also given the option of having them ported and polished as well as drilled for about $525. I decided not to put the extra money into it and just get drilled (the heads, $mart@ss).
Today, I find out that the machine shop screwed up and ported and polished the heads as well as drilling them. The dealer said same price, $150.
What would you do, keep the 255 cams and just ride it? Have it re-tuned? Do something else? ( forgot to mention I am riding with V&H Vance & Hines true duals and Monster Ovals)
Like I said, I am looking for opinions, not a$$holes.
Thanks.
Tourer
Joined: Jan 2007
Posts: 483
Likes: 4
You should still be OK. The port and polish is going to open up the ports "some", but it shouldn't be to the extent that you saw from the increase in cubic inches. The real difference should be that your heads are simply going to flow better. See how it runs or ask the dealer to upload a new tune since their machine shop guys did the wrong work.
Grand HDF Member
Joined: Oct 2009
Posts: 3,824
Likes: 603
From: Myrtle Beach SC
The ACRs are the ticket. I did a 96 to 103 build with the 255 cam when they first released it. That combo screams for the ACRs. Every one I know doin that upgrade had hot start issues as well as compensator issues. I'd pop those babies on and go. The 255 cam is a good cam but has no overlap.
Road Captain
Joined: Jan 2009
Posts: 739
Likes: 2
From: St. Louis
You can crutch poor flowing heads with a bigger cam (to a certain extent) but good flowing heads will enhance a small cam and extend the power band. Put it back together, get it tuned properly and ride it. I think you'll be pleasantly surprised.
Cruiser
Joined: Feb 2012
Posts: 112
Likes: 0
From: Indiana
Trending Topics
Road Warrior
Joined: Aug 2005
Posts: 1,949
Likes: 288
No problems I see, but you do need a new tune. I assume you are using SE Super Tuner, since dealer is doing this for you. Get it done and ride.
TedMan
TedMan
HD Forum Stories
The Best of Harley-Davidson for Lifelong Riders
7 Surprising Harley-Davidson Products that Are Not Motorcycles
Verdad Gallardo
8 Best Harley-Davidson Motorcycles Ever
Pouria Savadkouei
10 Worst Harley-Davidson Motorcycles Ever
Pouria Savadkouei
Killer Custom's Jail Break Is The Breakout That Refused to Blend In
Verdad Gallardo
Crazy Bunderbike Build Looks Amazing, But Is It Impossible to Ride?
Verdad Gallardo
Harley-Davidson Reveals Super Cool Cafe Racer Concept
Verdad Gallardo
Engraved Rebellion: Inside Bundnerbike's Glam Rock II
Verdad Gallardo
10 Motorcycles You Should Never Buy
Joe Kucinski
10 Things Harley-Davidson Needs to Fix in 2026
Verdad Gallardo
Advanced
Joined: Feb 2012
Posts: 65
Likes: 0
From: AK
Personally, I'd get it tuned right off the bat. If those new heads flow significantly better than they did before, your probably going to be running lean and thus, hot! If you do decide to just ride it, I'd keep an eye on engine temp. It would also pay to disable the compression releases, and measure the cranking pressure, to get an idea of where you stand, compression wise. A good tune, will do nothing but enhance whats been done.
Jeff
Jeff