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Triumph T140 TR7-750cc Billet Piston Set

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Triumph T140 TR7-750cc Billet Piston Set

Availability: In stock

M.A.P. Cycle Billet Piston Kits for OEM T140 cylinders.  Not for T120/TR6 big bore cylinders.

$275.00 - $300.00

Only 2 left

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Description

Details

M.A.P. Cycle Billet Piston Kits for OEM T140/TR7 cylinders.  Not for T120/TR6 big bore cylinders.

    • Hi-Silicone, low expansion, Hi-Strength 4032 aluminum alloy.  The ultimate for severe use in air cooled engines.
    • 100% CNC Machined, utilizing the latest “Solid Works” CAD design. This allows for consistent cross-section providing the most even heat distribution with the highest weight reduction (lightest commercially available piston kits for less vibration).
    • Lo-Dome "Tight Quench" design for efficient flame travel and combustion (9.5:1 compression ratio and higher)
    • Zero Deck design for max power while minimizing octane requirements (9.5:1 compression ratio and higher)
    • 2nd Ring-Land "Accumulator" groove to prevent unloading of the top ring from trapped blow-by.
    • Tapered wrist pin (I.D.) for rigidity and weight reduction
    • “Micro Groove" piston skirt for high scuff resistance.
    • Race Type "SpiroLoc" clips for reliability - Won't come out
    • Latest piston cam design reduces noise, and increases life better than any other commercially available vintage Brit Bike piston kit.

    Updated wrist pin oiling:

      • 4 location pressure fed wrist pin oilers
      • Increases oil volume to pin
      • Dual clocked pin bore grooving holds and disperses the oil around the wrist pin
      • Minimizes heat buildup to prevent galling between the small end of the rod and the wrist pin

    Race proven ring pack features:

      • Perfectly round making these the best sealing, quickest seating rings available.
      • Modern sizing for the least amount of friction with the most amount of heat transfer for cooler running pistons.
        • 1.0mm Nitrided Stainless Steel Barrel-Face Top Ring
        • 1.2mm Ferrox Cast-Iron Napier 2nd
        • 2.8mm Nitrided Stainless Steel Rails with expander (3 piece design)

    Note:  Stated compression ratios are an approximation, and are dependent on several variables such as base and head gasket thickness, and any modifications that changes combustion chamber volume such as valve recession, valve sizing, and head surface milling.

    Designed by, and exclusively manufactured for M.A.P. Cycle thru sources in the U.S.A.

Additional Information

SKU MAP9012-9014-BILLET
Piston Material Billet - 4032
Manufacture MAP Cycle
Country of Manufacture United States
Additional Information

Additional Information

SKU MAP9012-9014-BILLET
Piston Material Billet - 4032
Manufacture MAP Cycle
Country of Manufacture United States
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Product Question

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On my 1977 T140V engine I have .080 oversize pistons. What size pistons would I need to have for the "Triumph T140 Billet Piston Set?" I might need to hone the cylinders.
6
What clearance do the 10.5 pistons require? This bike will be raced on 1/2 miles.
4
Could you tell me the distance from the wrist pin hole to the top edge of the piston (deck location). Also the pin diameter?
4
I have a 1983 T140. I need new +060“ pistons. Which one should I order?
4
I have a 1978 Triumph Bonneville T140 and I need to know if you make .020 inch oversize pistons?
2
Do you have direct experience with running these pistons on T140 street bike/mild cams in 100F + weather and our lovely CALFONIA "91" pump gas? Will 10.5:1 rato work- without excessively retarding ignition timing? How about the 9.0:1?
1
Hello,
Can you please tell me if your 78.5mm T140 pistons are suitable for use in the stock iron barrel?
Many thanks,
Nigel Waring
Oxford, England.
1
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