Club Chopper Forums Industrial Parts House  

Go Back   Club Chopper Forums > CHOPPER SHOP/TECH AREA > Shop Talk

Welcome to Club Chopper!  The World's largest and coolest place to be on the net if you dig the following!

  •  » Custom Bikes
  •  » Killer Paint
  •  » Old School Craftsmanship
  •  » Building and Wrenching
  •  » Hot Babes
  •  » Chopper Build Logs

...then you have come to the right place!

YES! I want to register an account for free right now!  p.s.: For registered members this ad will NOT show

Chopper Tech
Tech Article
Tech Article
Tech Article
Tech Article
Tech Article
Main Menu
Module Jump:
Club Chop Gallery

Club Chopper Gallery

Submit Your Photos!

Active Threads
Whats this Thing Worth??????
Last Post: STEINBVG
Posted On: Today
Replies: 5
Views: 245
WTB: chopper fucker battery box
Last Post: STEINBVG
Posted On: 12-07-2019
Replies: 9
Views: 16,330
Black Diamond Build
Last Post: Spade115
Posted On: 12-06-2019
Replies: 48
Views: 22,922
Eyes
Last Post: Shovel52
Posted On: 12-04-2019
Replies: 7
Views: 2,311
FXR / FLT Rigid builds?
Last Post: Spade115
Posted On: 12-02-2019
Replies: 9
Views: 3,752
More...
  #1 (permalink)  
Old 03-04-2005, 01:17 AM
Club Chopper Member
Visit my Photo Gallery
 
Join Date: Feb 2004
Location: Calhounville, or
Bike Year, Make, Engine: 1965 Electraglide,2000 Nightrain
Posts: 1,724
Not Ranked     
Bad valve day, Ouch!

Its not often that a valve plants so squarely into a piston as this.
This is a Merch 120", this happened without fault to the manufacturer of this engine.
This is the result of a valve spring failure, a $20 part breakage resulting in a spendy repair.
Very interesting engines, no head gaskets.http://www.clubchopper.com/photopost...cat=500&page=1
Reply With Quote
Sponsored Links
  #2 (permalink)  
Old 03-04-2005, 01:21 AM
Club Chopper Member
Visit my Photo Gallery
 
Join Date: Nov 2004
Location: San Diego, CA
Bike Year, Make, Engine: 2004 Rigid Springer 96" S&S
Posts: 18
Not Ranked     
Damn! Right in the middle.
Reply With Quote
  #3 (permalink)  
Old 03-04-2005, 01:23 AM
Club Chopper Member
Visit my Photo Gallery
 
Join Date: Jan 2005
Location: Connersville, In
Bike Year, Make, Engine: 1340 chopper in the works
Posts: 1,300
Not Ranked     
Ouch!! I didn't know they put quarter slots in their pistons!! LOL
Had to be a real noise maker!
Reply With Quote
  #4 (permalink)  
Old 03-04-2005, 02:42 AM
Scooter6512's Avatar
Club Chopper Member
Visit my Photo Gallery
 
Join Date: Apr 2004
Location: Lincoln, Ne
Bike Year, Make, Engine: 98 FXSTC* * * 10" up 5" out 46* Redneck
Posts: 530
Not Ranked     
How can they not run a head gasket? Is it like special machining between the two surfaces? Sounds itnteresting. How is the rest of the motor built? Quality stuff in there or what?
__________________
Oral sex and regular sex are not the same things....that's why they are different prices....

Reply With Quote
  #5 (permalink)  
Old 03-04-2005, 03:20 AM
Club Chopper Member
Visit my Photo Gallery
 
Join Date: Feb 2004
Location: Calhounville, or
Bike Year, Make, Engine: 1965 Electraglide,2000 Nightrain
Posts: 1,724
Not Ranked     
At the top of the cylinder there is a slightly raised shoulder from the cast iron cylinder sleeve ( visible in the top right corner of photo). The head is drawn down with considerable torque, and this shoulder is actually makes an impression into the head .
This makes a metal to metal contact for head and cylinder, thats good for heat transfer.
The cylinder to crankcase is sealed with orings, the oring grooves are cut into the cylinder where as twincam the grooves are cut into the crankcases.
All of this is great for heat transfer.
This is a quality engine, even has a Jims breather gear. I will have to do a complete build as alot of metal moved around, The front head sucked in metal from the rear head and bent both valves, and metal went through the hole in the rear piston to the lower end
I may take some photos of this as I build it, if there is interest in it I will post them.

Don
__________________
If I did it once, I will do it again.
Reply With Quote
  #6 (permalink)  
Old 03-04-2005, 08:56 AM
Freak's Avatar
Club Chopper Member
Visit my Photo Gallery
 
Join Date: Jul 2004
Location: OUTWORLD, GA
Bike Year, Make, Engine: 10 foot of Thunder
Posts: 1,071
Not Ranked     
Bullseye or what.

Now my question. Why no head gasket?

I do not know of a machining process that could result in a good enough surface texture that would allow a connection that would withstand the pressures and thermal cycling experienced on an engine.

Your explanation above would indicate that this is a one tiime event. How could anyone ever reproduce the indentation ? First valve job would require wrench (mechanic) to overtorque to even have a chance of sealing would it not?

Extensive labyrith?

Please enlighten me.
Freak
__________________
Acoustic Terrorist MC


Last edited by Freak; 03-04-2005 at 09:04 AM..
Reply With Quote
  #7 (permalink)  
Old 03-04-2005, 09:09 AM
onebaddog's Avatar
Club Chopper Member
Visit my Photo Gallery
 
Join Date: Feb 2004
Location: Northwest IN/Chicago, IN
Bike Year, Make, Engine: 92FXSTC
Posts: 520
Not Ranked     
Don,
Yea that baby took a shot, in the days i drag raced i seen a bunch of strange stuff happen to motors, we had one physically remove a chunk of an aluminum brodix cylinder head & cylinders 3 & 5 from a small block chevy, hell the piece of cylinder head was still bolted to the chunk of block, but it was all laying on the floor !!!! not to mention the pistons were now on the outside of the block at that point. It's pretty amazing the stuff that can go wrong or the damage that can be had from the faliure of a little
$ 20 part. Some of the nitrous junkies we raced with, would push the copper head gaskets out from between the block & heads from the cylinder pressures they ran with that stuff. I've seen em cook pistons so bad the only thing left hooked to the connecting rod was the wrist pin bosses !!!!
OBD
__________________
Foolish man give wife grand piano ~ Wise man give wife upright organ.
Reply With Quote
  #8 (permalink)  
Old 03-04-2005, 09:43 AM
Club Chopper Member
Visit my Photo Gallery
 
Join Date: Feb 2004
Location: Calhounville, or
Bike Year, Make, Engine: 1965 Electraglide,2000 Nightrain
Posts: 1,724
Not Ranked     
There is not alot of damage to this engine. The rear head is savable.
I was poking around on the net, and it appears that Merch may not exist again.
The rear cylinder sleeve is damaged, I may have to obtain a sleeve and install it instead of replace the whole cylinder.
It looks like Zippers may have replacement pistons. I will have to check around a bit.
Anyone have any Merch info?

Don
__________________
If I did it once, I will do it again.
Reply With Quote
  #9 (permalink)  
Old 03-04-2005, 11:51 AM
Club Chopper Member
Visit my Photo Gallery
 
Join Date: Feb 2004
Location: Calhounville, or
Bike Year, Make, Engine: 1965 Electraglide,2000 Nightrain
Posts: 1,724
Not Ranked     
On the head to cylinder interface. The head will require refacing each time the heads or heads are removed.
The impression that occurs on the head from the cylinder sleeve will of course work harden and it would be unlikely to get it to seal without a fresh surface.
This type of seal is used in other industries where super high pressure is encounterd (high pressure hydraulics).
The two best ways to face a surface like this would be an automatic facing head in a mill type machine or mounted and faced in a lathe.
Fly cutting in a mill would leave tool marks that would traverse the inside to outside of the combustion chamber, making leaking more likely.
__________________
If I did it once, I will do it again.
Reply With Quote
  #10 (permalink)  
Old 03-04-2005, 12:10 PM
XTC Choppers's Avatar
Club Chopper Member
Visit my Photo Gallery
 
Join Date: Apr 2004
Location: San Diego, CA
Bike Year, Make, Engine: 2006, XTC Choppers Pro-Street, TP 124
Posts: 557
Not Ranked     
HD, Gerry Merchant is alive and well. To make a long story short he and his partner in the now defunct Merch Performance got fucked by their accountants and lawyers (not surprising) in an effort to take Merch Performace public. Gerry left the business over 2 years before their demise and started Merch Motorcycles, with the intent of using their (his) 131" fuelie in his production Road King styled bike. After M/P went down Gerry and his partner went in and bought back all of their tooling and are now producing motors under the name Merch Motorworkz. Here is the linkhttp://www.merchmotorworkz.com/main.htm

When I have spoken with them they are very adament about standing behind the motors that are already out there. Although there is no obligation to do so because they are not even the same company. Gerry just feels because his name is on the product he will stand behind it. They also have all of the replacement parts neccessary for rebuilds. They will ask for the case numbers though because there was a guy from Texas who came to the auction and bought all of the rejected cases, flywheels,etc. and has been selling them as new M/P motors. If this motor was a valid M/P build Gerry and Bob will help you out.

IMO Gerry and Bob @ Merch Motorworkz are good peolpe and stand behind their product unconditionally.

p.s. They also have a 150" Fuelie just about ready to pop, and as we speak the 141" should be available.
__________________
XTC Choppers
866-488-9911
www.xtcchoppers.com
sales@xtcchoppers.com
Reply With Quote
  #11 (permalink)  
Old 03-04-2005, 12:12 PM
XTC Choppers's Avatar
Club Chopper Member
Visit my Photo Gallery
 
Join Date: Apr 2004
Location: San Diego, CA
Bike Year, Make, Engine: 2006, XTC Choppers Pro-Street, TP 124
Posts: 557
Not Ranked     
p.s.s. If you have any tech ?'s they are available to help at the # on the web site. Good chance you'll talk to Gerry directly. Good to see these guys getting back to their roots "BIG ASS MOTORS!"
__________________
XTC Choppers
866-488-9911
www.xtcchoppers.com
sales@xtcchoppers.com
Reply With Quote
  #12 (permalink)  
Old 03-04-2005, 08:11 PM
Club Chopper Member
Visit my Photo Gallery
 
Join Date: Feb 2004
Location: Calhounville, or
Bike Year, Make, Engine: 1965 Electraglide,2000 Nightrain
Posts: 1,724
Not Ranked     
Thanks for the info XTC, again this failure is not the fault of Merch. This motor has been run very hard.
I have the cam cover off and see no cheap stuff whatsoever.
I will try to get this thing out and disasembled in the next day or two and take some more pics.
I did flow test the front head and found it too was very good.

Don
__________________
If I did it once, I will do it again.
Reply With Quote
Sponsored Links
  #13 (permalink)  
Old 03-04-2005, 08:16 PM
Club Chopper Member
Visit my Photo Gallery
 
Join Date: Nov 2004
Location: Regina, Sk
Bike Year, Make, Engine: 97 rubber mnt softail 120 Merch
Posts: 162
Not Ranked     
It's to bad they

had to take such a roundabout way to get here again ,but its great to have Gerry back in the driver's seat again.Red
Reply With Quote
  #14 (permalink)  
Old 03-05-2005, 09:50 AM
XTC Choppers's Avatar
Club Chopper Member
Visit my Photo Gallery
 
Join Date: Apr 2004
Location: San Diego, CA
Bike Year, Make, Engine: 2006, XTC Choppers Pro-Street, TP 124
Posts: 557
Not Ranked     
I agree, it is great to have Gerry back in the drivers seat. Merch was doing 120's and 131's before anyone. They are the original big inch specialists and from what I understand are looking to retake their throne.
__________________
XTC Choppers
866-488-9911
www.xtcchoppers.com
sales@xtcchoppers.com
Reply With Quote
  #15 (permalink)  
Old 03-05-2005, 09:56 AM
XTC Choppers's Avatar
Club Chopper Member
Visit my Photo Gallery
 
Join Date: Apr 2004
Location: San Diego, CA
Bike Year, Make, Engine: 2006, XTC Choppers Pro-Street, TP 124
Posts: 557
Not Ranked     
Just thought I'd show a picture of my bike with the Merch 120" Stage II. Smokes all dem S&S motors, although I haven't had the opportunity to find a 145" yet.
[IMG] [/IMG]
__________________
XTC Choppers
866-488-9911
www.xtcchoppers.com
sales@xtcchoppers.com
Reply With Quote
Reply

Thread Tools
Display Modes

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 On
Pingbacks are On
Refbacks are On




All times are GMT -7. The time now is 05:31 PM.


vBulletin skins developed by: eXtremepixels
Powered by vBulletin® Version 3.8.0
Copyright ©2000 - 2019, Jelsoft Enterprises Ltd.
SEO by vBSEO 3.6.0

CC Policy

The representations expressed are the representations and opinions of the clubchopper.com forum members and do not necessarily reflect the opinions and viewpoints of the site owners or moderators. clubchopper.com forum members agree not to post any copyrighted material unless the copyrighted material is owned by you or have been given the expressed written consent to post. Although we do not and cannot review the messages posted and are not responsible for the content of any of these messages, we reserve the right to delete any message for any reason whatsoever. You remain solely responsible for the content of your messages, and you agree to indemnify and hold us harmless with respect to any claim based upon transmission of your message(s). For full policy, please click the "CC policy" link. Thank you for visiting the clubchopper.com
Links monetized by VigLink