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  #1 (permalink)  
Old 01-18-2006, 02:16 AM
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Merch

This may be of interest to those who hear the words crate engine and custom engine and dont know for sure what it means.
These Merch engines are in my opinion a custom engine.
It is attention to detail thay makes this cut.
most of what is in these few photos are adaptable to other engines such as S&S.
The Merch owners typicaly are individuals that are not afraid of their motorcycle or as a friend says " Not For Those that ride the short bus".
These are high power serious engines.

This first photo shows the extra oil holes for the wrist pin.
http://www.clubchopper.com/photopost...00&ppuser=1763

This photo shows the right flywheel, There is a windage groove cut on the edge of the wheel to assist oil scavaging.
Now, this is important! Notice that the drilled balance holes are on the inside face of the flywheel. If the holes are on the outside face, these balance holes will churn air into or cavitate the oil making it harder for the engine to scavage the oil out out of the crankcase. This results in drag and oil coming out of the breather.
All HD from 1972 and current after market engines have the balance holes on the outside flywheel face because of production balance methods. On the Merch however we talking a performance engine. It would appear that Mr Merchant knows a few things. Nice looking wheel also.
http://www.clubchopper.com/photopost...00&ppuser=1763

Very nice cam area. The oil return port is open and not restricked as can be seen at the bottom of this compartment.
http://www.clubchopper.com/photopost...00&ppuser=1763

Here in the cylinder opening a steel rod was inserted into the case that the cylinder stud screws into, to prevent pullout.
http://www.clubchopper.com/photopost...00&ppuser=1763

Here are the special pistons that I am using to replace the original on the right.
These custom replacement H section pistons allow deeper notching for cam and compression options. These pistons are each 47grams lighter than the originals.
http://www.clubchopper.com/photopost...00&ppuser=1763

As it can be seen a custom engine differs from a crate engine by lots of little details and this is just a few.
I hope you enjoyed this little tour, if you want to see more, just ask.

Don
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Last edited by HDFACTORYCERTIF; 01-18-2006 at 03:29 AM..
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  #2 (permalink)  
Old 01-18-2006, 05:40 AM
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thanks for the insight....but i will still stick with Ultima, TP or S&S....
Gary can keep his FATSO's.
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Old 01-18-2006, 07:01 AM
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Nice lesson, thanks. I was told, a long time ago by a guy that balanced a flywheel for me, that drilling the balance holes on the outside face helped in lubrication. He had also mentioned drilling extra holes in the wrist pin but never said why..guess I know now.
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Old 01-18-2006, 07:19 AM
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Thanks for the post I've always been fascinated with this stuff. Great technical explanation I appreciate it.
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Old 01-18-2006, 09:14 AM
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Thanks Don.
Gotta love this site...
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Old 01-18-2006, 09:51 AM
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These small mods can be added to other engines at rebuild.
I am not a dealer for Merch. This 4.25" X 4.25" engine is out of production.
However this is whats inside a top quality performance engine.
If you notice that the oil is foaming in your oil tank, its because the flywheel balance holes are drilled on the outside face of the flywheels.
If your engine tends to blow oil out the breather, it is most likely that the features found here on this Merch would stop that.

Don
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Old 01-18-2006, 01:32 PM
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Nice job Don!!!!
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Old 01-19-2006, 10:41 AM
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Thank you!

Don
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Old 01-21-2006, 07:02 PM
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By the way, of the performance and durability features that are found on this engine by Merch.
Not a single one of them will be found on the Korean import engines such as R/T.

Don
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Old 01-21-2006, 07:08 PM
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Good post Don. I love this stuff.
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  #11 (permalink)  
Old 01-21-2006, 08:47 PM
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holy cow i just bought A m/p motor set on twin cam heads. will somebody contact me on spec. for this setup . went to merch performance web site found nothing .person who sold me the bike vanished [wonder why] this bike is a rocket ship but am I over my head?
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Old 01-22-2006, 06:12 AM
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Quote:
Originally posted by HDFACTORYCERTIF
By the way, of the performance and durability features that are found on this engine by Merch.
Not a single one of them will be found on the Korean import engines such as R/T.

Don
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Old 01-22-2006, 07:01 AM
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Quote:
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Old 01-22-2006, 08:05 AM
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Quote:
Originally posted by HDFACTORYCERTIF
By the way, of the performance and durability features that are found on this engine by Merch.
Not a single one of them will be found on the Korean import engines such as R/T.

Don
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Old 01-22-2006, 09:30 AM
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What do you think of the old Shovelheads Don?, your starting to dig yourself a hole again!!



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