Go Back   Harley Davidson Forums > Harley Davidson Motorcycles > Touring Models
Sign in using an external account
Register Forgot Password?
Search


Touring Models Road King, Road King Custom, Road King Classic, Road Glide, Street Glide, Electra Glide, Electra Glide Classic, and Electra Glide Ultra Classic bikes.
Sponsored by: Fuel Moto USA

Welcome to HDForums.com!

Reply
 
 
 
P
 
Thread Tools Search this Thread
  #1  
Old 04-18-2007, 04:58 PM
vthunder vthunder is offline
Hang Around
Join Date: Apr 2007
Location:
Posts: 10
Default twin cam rebuild

I JUST FINISHED PUTTING 95 C.I. CYLINDERS, ANDREW 37B CAMS, KEITH BLACK 10.5 TO 1 PISTONS, AND PORTED POLISHED AND FLOWED HARELY DAVIDSON HEADS ON MY 2003 ROADKING. I DID THE WORK MYSELF, I DID NOT DO THE HEAD WORK, I SENT THOSE OFF. WHEN I STARTED IT UP IT CRANKS RIGHT AWAY, BUT IT DOES NOT SOUND RIGHT. I MAPPED THE CLOSEST MAP I COULD GET INTO MY POWER COMMANDER, I THEN SUBSTITUTED THAT WITH ANOTHER ONE THAT WAS CLOSE TO THE SAME MODIFICATIONS. THE BACK CYLINDER IS CHUGGING THE WAY YOU WOULD EXPECT A CAMMED UP MOTOR TO DO. BUT THE FRONT CYLINDER SEEMS TO BE RUNNING FASTER AND A SORT OF PECKING NOISE COMING FROM THE EXHAUST.I HAVE NO MOTOR KNOCKING NOISES AND NO LEAKS. I THEN MAPPED IN A ZERO MAP INTO THE POWER COMMANDER, IT DID NOT MAKE ALOT OF DIFFERNCE IN THE RUNNING OF THE ENGINE. IT SMELLS AND LOOKS LIKE IT IS RUNNING REALLY RICH, BLACK SMOKE COMING FROM THE EXHAUST WHEN YOU REV IT UP. IT DOES NOT SOUND TO BAD WHEN YOU REV THE ENGINE UP, ALTHOUGH I DON'T REV IT HARD, AM AFRAID TO UNDER THE CIRCUMSTANCES. ANYONE HAVE ANY RECOMMENDATIONS ON WHAT I NEED TO LOOK AT?? PLANNED TO RIDE THIS TO MYRTLE BEACH IN A LITTLE OVER 3 WEEKS, NEED TO GET IT RESOLVED. I HAVE TRUE DUAL headers , DID AWAY WITH THE CROSSOVER PIPE AND HAVE KIRKER SLIP-ON MUFFLERS WITH TURNED DOWN END CAPS. HAVE HAD THE EXHAUST THIS WAY FOR OVER A YEAR BEFORE I DID THE RECENT MODIFICATIONS.I REINSTALLED THE STOCK PUSHRODS, I PUT THEM IN EXACTLY THE SAME PLACE THEY CAME FROM. THE HEADS ARE STOCK CLEARANCE, THEY WERE NOT SHAVED. NEW VALVES WERE INSTALLED WITH STOCK SPRINGS AND VITON SEALS AND NEW GUIDES. I USED THE 37B CAMS BEACUSE THE HEADS WERE NOT SET UP FOR HIGH LIFT, IF YOU GO OVER .510 LIKE THE 37B HAS THEN YOU NEED STRONGER SPRINGS. HAD THE HEADS FOR ABOUT A YEAR, DID NOT WANT TO INVEST IN NEW SPRINGS. TALKED TO SEVERAL OLD HARLEY MECHANICS AND THEY THOUGHT THE CAMS WOULD BE OK WITH 95 C.I AND 10.5 TO 1 PISTONS. I AM FAIRLY MECHANICAL BUT HAVE ONLY BEEN INSIDE A HARLEY ENGINE 1 TIME BEFORE, DID DO TOP END ON S&S 107 STROKER ENGINE ABOUT A YEAR AGO. I JUST DON'T KNOW ENOUGH TO FIGURE OUT CAUSE AND EFFECT.
I
__________________
Vthunder,
Making the Blue Ridge mountains rumble.
Reply With Quote
  #2  
Old 04-18-2007, 05:01 PM
Akitakoi's Avatar
Akitakoi Akitakoi is offline
Outstanding HDF Member
Join Date: Aug 2006
Location: SE Wisconsin
Posts: 2,094
Default RE: twin cam rebuild

[sm=huh.gif]shhhhhhhh to loud
__________________
09 StreetGlide - 116 HP - 125 Torque
FM 107", Woods 555 Cam, Level B Heads, Dyno Tuned by Fuelmoto.
Big Sucker, Monster Ovals, PC-V, SE Compensator, Cruise, ABS, Oil Cooler, Painted Inner, Lowers, Security, King Tour Pack, Chrome Front End, Chrome 9 Spoke Rims,,,
Reply With Quote
  #3  
Old 04-18-2007, 05:04 PM
jeepster09's Avatar
jeepster09 jeepster09 is offline
Outstanding HDF Member
Join Date: Feb 2005
Location: Twin Cities Minnesota
Posts: 2,768
Default RE: twin cam rebuild

Well to start with did you rotate motor over and check for valve spring coil bind? Did you clay the pistons and check for valve to piston clearence? Not to dissapoint you but Andrews 37 cam is not meant for over 10 to 1 compression, it will detonate, they work best UNDER 10 to 1.
Not knowing how many corners were cut to save money it is hard to give advice. It is usually better to wait till you can afford to do it right than assemble a bunch of un-matched parts.
__________________
"Life Member NRA"
Reply With Quote
  #4  
Old 04-19-2007, 07:45 AM
vthunder vthunder is offline
Hang Around
Join Date: Apr 2007
Location:
Posts: 10
Default RE: twin cam rebuild

Hi jeepster,
Thank you for the response, I think I have a timing problem. I tried to align the cams right but I must have been a tooth or two off. Money was not an issue, never has been as far as my bikes go. I think the biggest thing that is causing problems is bad advice from people who are supposed to be in the know and my lack of knowledge. But I wanted to do it myself. So I will tear it back apart and go into the cam cover and realign those cams. Say you dont think the 37 b is big enough for the 10.5 pistons. Thanks,
Vthunder
__________________
Vthunder,
Making the Blue Ridge mountains rumble.
Reply With Quote
Old 04-19-2007, 07:45 AM
 
 
 
P
Reply

Tags
37b, 88, andrews, cam, engine, harley, hd, motor, pushrods, rebuild, rebuilding, rebuilt, stock, twin, twincam


Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off

Forum Jump

Advertising
Featured Sponsors
Vendor Directory
Sponsors

All times are GMT -5. The time now is 01:08 AM.


Internet Brands, Inc.



Search Engine Optimization by vBSEO 3.6.1