The MAP cycle rods are noted as 6.5 inches so that COULD be a problem,,
But the specs seem really impressive otherwise. I would have to do a lot of measuring and mock up before I could have an opinion on the rod center to center being a significant issue.
Specs:
Dimensions:
6.5 inches center to center
Features:
Sold in matched pairs - balanced to +/- 1 gram
Unmatched quality - the best rods available anywhere for Triumph
"Solid Works" designed and stress tested
Machined from 4340 forging
Shot peened for stress relief
ARP2000 bolts (220,000 lb. tensile strength)
Innovative machined piston oil squirting notches
Double wrist pin oilers
Unique reinforced small end critical areas without adding excess weight or cost
Finite element analyses design by High Cotton MotoWorks allows for:
Re-shaped pin boss for added strength (helps prevent "pin flex"& small-end failure)
Double “forced” pin oilers to reduce friction and piston pin heat
Bushed small end (replaceable) eliminating the need for fragile and expensive DLC pins
Optimized big-end and pin boss for strength with important weight reduction compared to other steel rods
Note:
Check center-to-center length on your existing rod to ensure proper fitment
BSA Models
BSA A10 Plunger 1956 - 1957
BSA A10 Road Rocket 1956 - 1957
BSA A10 Rocket Gold Star 1962 - 1963
BSA A10 Rocket Scrambler 1958 - 1959
BSA A10 Royal Tourist 1961 - 1962
BSA A10 Spitfire 1960 - 1963
BSA A10 Super Rocket 1958 - 1963
BSA A10 Swing Arm 1956 - 1963
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I dont know anything about the Thunder products but I know of a shop down in LA who used their Preunit Triumph cases and are pleased with them, set some LSR records with them as well (Franz & Grubb)
But it APPEARS based on the website the Thunder BSA rods might also be 6.5 as well??
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Specs:
1. We are manufacturers and suppliers worldwide of Lightning Conrods, a high quality conrods made from 7075 T6 alloy available from stock to fit all popular British bikes suitable for road or race, used to win many Vintage and Classic Championships Throughout the world.
Available for the following bikes:
BSA B25, A7, A10 large and small journal, A50, A65, A75/ Rocket 3
Norton Dominator 88, 99, Atlas, Commando
Triumph T100 pre 54 small journal using Daytona B/E shells,
Triumph Daytona, 5TA, T100, T110, T120, T140, T150, T160
NRE 6inch centres, 6.5inch centres
Specials are also available to customer’s requirement
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British Cycle Supply (BCS) is another good vendor and I know the owner Mark Appleton. (PM me for the promo code discount
)
and they stock the Carillo brand rods...
See:
http://www.britcycle.com/Products/carillo_conrods.htmBuilding A Hotrod Brit Bike?
Fatigue is the major cause of connecting rod failure. Carrillo Rods utilize a proprietary chromium / nickel / vanadium / molybdenum alloy steel and are manufactured and forged to custom specifications to meet Carrillo's stringent requirements for strength and durability.
Carrillo H-Beam Chrome Moly Steel Rods are designed with the serious racer in mind. Each rod is balanced and shot peened to achieve the ultimate in strength and fatigue properties and to endure even the most challenging conditions during high-performance competition.
The PRO H-Beam rod is the strongest connecting rod money can buy. No stronger rod is available anywhere at any price. It features a unique design that requires more machining operations than other designs. This design provides a rod that is not only stronger, but is up to fifty grams lighter than the inferior OEM rods it is replacing. However, the crown jewels are the Carrillo exclusive SPS Multiphase rod bolts.
These are the world's strongest rod bolts!! Under normal operation and service, SPS Multiphase bolts should last indefinitely. They have been tested to over 100 torque cycles without any fatigue loss. The combination of the rod design and the Multiphase bolt is the reason that the PRO H-Beams are the world's best rods.
The best insurance you can have for a bulletproof engine is the best rods in the world: US-Made Carrillo steel rods - light, strong and rigid. Don't take chances, call British Cycle Supply for Carrillo conrods for all British bikes. Huge stock on our shelves RIGHT NOW for most models!
The Carrillo connecting rod is a precision, high strength, quality connecting rod, which when properly installed and maintained, will perform faultlessly in today's racing and high performance engines.
The Carrillo conrods supplied by BCS:
06-4896/A Conrods, CARRILLO, Norton twins PAIR
41-0549/A Conrod, CARRILLO, BSA B44 EACH
65-1836/A Conrod, CARRILLO, DBD, ETC, High performance EACH
67-1205/1206/A Conrods, CARRILLO, BSA A10 PAIR
70-9525/B Conrods, CARRILLO, Triumph 650, late PAIR
70-9740/B Conrod set, CARRILLO, 3cyl, BSA/Triumph SET
70-9915/A Conrods, CARRILLO, T100, B25, T25 late style PAIR
71-1105/1106/B Conrods, CARRILLO, BSA A50/A65 PAIR
71-1635/A Conrod, CARRILLO, B50 EACH
71-3006/A Conrods, CARRILLO, Triumph T140/TR7 PAIR
71-7339/A Conrods, CARRILLO, Triumph TSS 8 VALVE PAIR
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