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Ross Piston Kit, Yamaha FJ, 1297cc, 80.50mm, 99791-80.50mm-PK

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  • Ross Piston Kit, Yamaha FJ, 1297cc, 80.50mm
  • Ross racing, Valve Pockets Already Machined For Oversized Valves
  • 99791-80.50mm-PK
  • Andrews Motorsports Building 3
  • W.I.P. Work In Progress
  • Engine Assembly
  • Engine Assembly
  • Engine Assembly
  • Engine Assembly, Pro Ultra Sonic Cleaners
  • Cylinder Head Machining
  • Cylinder &  Connecting Rod Honing
  • Sheet Metal Fabrication
  • Chassis Fabrication Shop
  • Chassis Fabrication, Rear Housing Area
  • Welding Area
  • Machine Shop
  • Machine Shop, Brake Lathe
  • Machine Shop
  • Machine Shop, Mill 1
Ross Racing Products
Usually Ships In One Business Day

 Product Description

                                              ***** PLEASE READ TERMS AND CONDITIONS BELOW CAREFULLY *****

**Long Live the 1200!**

This auction is for a CUSTOM ROSS RACING XJR 1297cc (advertised 12 / 1 COMPRESSION with full dome) piston kit as shown in pictures 1 thru 3. This piston kit also has the valve pockets already enlarged for oversize valves.

 When used with a FJ1100 it is recommended to use a FJ1200 or XJR1250 cylinder block with big bore sleeves (YA-991) installed. Crankcase cleanup is required if using YA-991 sleeves and Andrews Motorsports can perform the machine work if needed.

When using a FJ1100 block use our custom 3.290 sleeves and crankcase boring will NOT be required. The smaller OD custom sleeves also lessen the opportunity for oil seepage seen when the larger OD YA-991 sleeve is used. This is why a lot of the older blocks seeped oil when "big bored", the aluminum was just to tin after using the larger OD sleeves. With the old FJ1100 blocks the aluminum bore (for installation of the sleeve) was left thin when bored to accept the YA-991 sleeve which has a OD of 3.390. 

 When used with the European XJR1300 air cooled series engine the cylinder block will have to be bored and re-coated or big bore steel sleeves installed. The last application series engines (1250, 1300) does not need crankcase cleanup machine work as there is enough room for the cylinder sleeves to clear on assembly, whether using the larger OD YA-991 or our smaller OD custom Sleeve.

This kit includes: (4) Ross 83.00mm 3.167 +/- pistons, (4) Ross XC80.50 (XC3169) ring sets, (4) wrist pins, and (8) pin c-clips 4000 WA-9, (1) Cometic custom 80.50mm .040 head gasket (set deck at 0.000) and (1) 5EA base gasket. This kit is a 1297cc and the advertised piston size is (3.166 / 80.4164mm), (3.169 / 80.50mm finish bore size). Due to temperature variations and production runs or the human factor piston size can vary + / - .0005.

If you need any machine work done to your block, we also specialize in that service. Please call the shop at 704-782-6134 8am / 5pm Monday through Friday if you have any questions about machine work for the piston kit. Andrews Motorsports can provide all necessary mechanical and machine work if needed.

The crankcase does require boring (cylinder sleeve clearance) for the install of this big bore kit in the FJ1100 or FJ1200 series engine crankcases. (Unless our CUSTOM 3.290 OD sleeve is used.

PLEASE NOTE: If any flat rate shipping option is chosen the products will most likely have to be removed from manufacturer packaging for shipping. If at all possible the manufacturer boxes will be used as packing material if space allows, otherwise the pictures you see is what you receive. We do not use "file photos". Please Buy American!!

Pictures 5 thru 12 are so my on-line customers can feel secure that they will be dealing with a company located in a brick and mortar location that has the equipment, personal and inventory to give our customers the service they both deserve and need.

International Buyers – Please Note:
Import duties, taxes, and charges are not included in the item price or shipping cost. These charges are the buyer's responsibility.
Please check with your country's customs office to determine what these additional costs will be prior to bidding or buying.

**Terms and Conditions**
*Please call the shop at 704-782-6134 8am / 5pm Monday through Friday if you have any questions about this listing or machine work for the piston kit.
*Payment must be received within two days of auction end.
*Payment method is PayPal ONLY!
*Item will be shipped within 2 days of receiving payment. International 4 days.
*LIMITED INTERNATIONAL SHIPPING! Please contact before purchase.
*No warranty expressed or implied for this auction
*There will be a 7.00% sales tax for residents of North Carolina.
*If you are a North Carolina resident or shipping to a NC address after you click the Buy It Now button please wait until I send you an updated invoice with sales tax added.
*Buyer is responsible for all shipping charges.
*RETURNS, If we described the part incorrectly. It is the buyer'sresponsibility to make sure the part he is ordering is what he needs.
*Iffor some reason you are dissatisfied with your transaction pleasecontact us and we will do our best to correct the problem.
**Youmust have at least 5 feedback before you can bid. If you do not meetthis requirement, please email me before bidding. Otherwise your bid may be deleted.

 Warranty Information

No Warranty Is Expressed Or Implied

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