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#471442 - 01/09/13 12:27 am MAP 4340 "Stroker/Conversion" H-Beam Rods  
Joined: Dec 2010
Posts: 31
M.A.P. Offline
Triumph Parts
M.A.P.  Offline

Triumph Parts

Joined: Dec 2010
Posts: 31
Florida


New Product Release

4340 Steel "H" Beam Triumph "Stroker"/“Long-Rod” Norton Conversion

Deciding to listen to our customers to produce a new steel connecting rod to complement our already popular Alloy connecting rod series, M.A.P. Cycle Enterprises, Inc. of St. Petersburg, Florida USA, announces a new 6.362” connecting rod.

Features:

• Performance Preferred "H" Beam Design
• AISI 4340 Forged Steel (unlike other materials steel allows for unlimited "Cycle" life)
• ARP2000 Rod Bolts (220,000lb. tensile strength)
• Finite Element Analyses Design by High Cotton MotoWorks allows for:

  1. Re-shaped pin boss for strength (avoids pin flex failure) with lightest weight
  2. Double "forced" pin oilers to reduce both friction and piston pin heat for longer life
  3. Bushed Small End (eliminates any possible failure of very expensive "Diamond Like Coating" (DLC) coated pins - replaceable)
  4. Optimized Big-End and Pin Boss for strength and reduced weight (40 gram (pin-end) and 107 gram (big-end) reduction from standard Carrillo con-rods)

• 6.362" Center to Center Distance
  1. Allows for use of stock type pistons in conjunction with an 89mm MAP "Stroker" Crank (or a converted Norton crank (89mm stroke) to any 650/750 "Long-Rod" Triumph engine (ie no custom pistons required for your stroker conversion saving $$$'s)

• Uses readily available Norton Rod Shells
• Latest CNC Manufacturing Techniques
• Track/Street Tested


FYI:
Ideal with M.A.P. Norton "Long-Rod" Conversion pistons in a 750/850 Norton engines (Shown in photo). Creates a better rod to stroke ratio (1.82 vs. 1.67 for stock). Allows for use with a much shorter lighter piston to further ease vibrations (required). Longer engine and piston life (less weight with less thrust face pressures) and less noise. Add in modern rings for best sealing for a "perfected" package at reasonable prices. (Do note: MAP’s “Long-Rod” Norton conversion concept was designed and developed over 10 years ago!)


In Stock and Ready to Ship - Phone (727-381-1151) or Email (tech@mapcycle.com) with questions, comments, or for more information.


Order MAP7063 (Rods Only)
Sold Each - Only $225
(Dealer and quantity prices available - Inquire!)

Last edited by M.A.P.; 03/10/13 12:53 am.
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#471586 - 01/09/13 10:47 pm Re: MAP 4340 "Stroker/Conversion" H-Beam Rods [Re: M.A.P.]  
Joined: Apr 2005
Posts: 2,332
Mark Parker Offline
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Mark Parker  Offline
BritBike Forum member

Joined: Apr 2005
Posts: 2,332
Bega NSW Australia
Are they in different lengths, 6.362" for Triumph and 6.382" for Norton or is one of those lengths a mistake? Also what is double 'forced' pin oilers? Are they just with the smaller pin dia or also available with the T140 pin dia? Just wondering if they'd fit an A65 with norton crank and taller cyls.


mark
#471604 - 01/10/13 1:22 am Re: MAP 4340 "Stroker/Conversion" H-Beam Rods [Re: Mark Parker]  
Joined: Dec 2010
Posts: 31
M.A.P. Offline
Triumph Parts
M.A.P.  Offline

Triumph Parts

Joined: Dec 2010
Posts: 31
Florida
Hey Mark,

Had me going for a bit trying to find where I wrote 6.382. No our rods are 3.62 the difference between a Triumph 82 mm stroke and the Norton's (Triumph guys use that as a stroker crank) of 89mm.

As to the forced oiling. I call it that as the oiling holes are located in the underside of the pin in the valley of the "H" beam (offset so as to allow for the maximum amount of oiling) which in essence forces the oil into the pin oiling hole on every downward cycle.

Sorry no 3/4 pin diameters for this conversion only use the Triumph pin size of .688 for these rods. We will be making other rods but unfortunately to keep the price down they needed to be done in quantity thus no customs at this time.

Stock Triumph T120 (6.5") ones are already and in stock. Same price.

Cheers
Marino

Last edited by M.A.P.; 01/10/13 11:55 pm.
#471638 - 01/10/13 7:29 am Re: MAP 4340 "Stroker/Conversion" H-Beam Rods [Re: M.A.P.]  
Joined: Apr 2005
Posts: 2,332
Mark Parker Offline
BritBike Forum member
Mark Parker  Offline
BritBike Forum member

Joined: Apr 2005
Posts: 2,332
Bega NSW Australia
Yea Marino, up the top after 'announces'.
If one was making a special piston for an A65 anyway the smaller pin dia probably wouldn't matter. It would need a taller cyl and maybe a shorter piston than a B44, which a smaller pin would help. I did send you a PM.


mark
#471762 - 01/10/13 11:53 pm Re: MAP 4340 "Stroker/Conversion" H-Beam Rods [Re: Mark Parker]  
Joined: Dec 2010
Posts: 31
M.A.P. Offline
Triumph Parts
M.A.P.  Offline

Triumph Parts

Joined: Dec 2010
Posts: 31
Florida
Thanks Mark for pointing it out,

Looked but could not find - wow getting old and now Blind to boot.

Marino

#471785 - 01/11/13 2:35 am Re: MAP 4340 "Stroker/Conversion" H-Beam Rods [Re: M.A.P.]  
Joined: Mar 2005
Posts: 9,970
John Healy Online content
John Healy  Online Content


Joined: Mar 2005
Posts: 9,970
Boston, Massachusetts
M
That looks like a pretty nice bit of kit!
John


#472759 - 01/16/13 11:01 pm Re: MAP 4340 "Stroker/Conversion" H-Beam Rods [Re: John Healy]  
Joined: Dec 2010
Posts: 31
M.A.P. Offline
Triumph Parts
M.A.P.  Offline

Triumph Parts

Joined: Dec 2010
Posts: 31
Florida
Mighty kind of you John.
Marino

#486398 - 04/19/13 2:18 am Re: MAP 4340 "Stroker/Conversion" H-Beam Rods [Re: M.A.P.]  
Joined: Apr 2012
Posts: 84
Tricatcent Offline
BritBike Forum member
Tricatcent  Offline
BritBike Forum member

Joined: Apr 2012
Posts: 84
British Columbia, Canada
I have some standard Carillos T120 length. They weigh 584 grams. I think they are the older heavy ones. I have never used them because I think they are too heavy. About 50 grams of the extra weight (compared with the std rods) is on the small end where it cannot be balanced perfectly as the big end weight can. The standard Triumph rods are about 400 grams. Yours must not be much heavier than the standard T120 alloy rods.

All of this MAP stuff looks great and the prices are good too.

#553594 - 07/18/14 8:01 pm Re: MAP 4340 "Stroker/Conversion" H-Beam Rods [Re: M.A.P.]  
Joined: Dec 2010
Posts: 31
M.A.P. Offline
Triumph Parts
M.A.P.  Offline

Triumph Parts

Joined: Dec 2010
Posts: 31
Florida
here are the specs for the T120 rods

115.1 gram small end vs standard Carrillo 154 grams (premium ultra-light 134g)
314.7 gram big end vs standard Carrillo 400 grams (premium ultra-light 349g)
429.8 gram total

Cheers


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