Cylinder Bore Re-Conditioning

     WIENANDT Performance Technology can recondition cylinder bores in many different ways. Bores on performance engines can be reconditioned by:

     Honing gives fresh finish to seat the piston rings. It also holds oils for best corrosion protection. Proper honing with the equipment that WPT uses can straiten and true worn bores. You must maintain correct piston to bore clearance however.

     Boring to fit an oversize piston. This required when bores are damaged or worn beyond clean up with in proper clearances.

     Sleeve Replacement, This can repair very heavy damaged cylinders. Custom sleeves can be made for special projects. WPT is a LA Sleeve and Advanced Sleeve dealer.

     Diamond Honing of Nikisil plated bores. This is a must for best performance when installing new pistons and rings. A double diamond plateau hone is used to get the WPT spec finish.

     Chrome or Nikisil plated cylinder can be repaired. WPT has a very close relationship with US Chrome Corporation of Fond du Lac, WI. Either plating can be stripped, welding can be done to repair along with re-boring if required. Re-plating with a Nikisil type product.

     Our standard practice for modified snowmobile engines is the strip the plating, then do all the porting and cylinder modifications. Then US Chrome puts new NiCom plating so all port have great detailed chamfers for best performance and durability. Over size bores can be created with NiCom plated bores.

     Line 2 Line Piston Coatings are the choice for WPT racing engines. Installed for us by licensed supplier US Chrome, in Fond du Lac, WI. This provides many advantages that end in better, measurable, engine performance. It can be applied to new or used pistons. Reducing friction was the first goal when coating pistons. By applying a three step process, and the final coat being a patented Teflon/Graphite outer layer, this was achieved. The pistons are then baked to complete the cure process. This coating can be applied at different thicknesses. The coating will slowly wear on the piston into the natural fit of the bore with out excess clearance which could be creating leakage. This gives better crankcase compression for better pumping ability and seals better compression by filling the void where blow-by of the ring could accrue. I personally like to have the coating thick to let the bore wear it to size. It does not stuff or seize. It protects the piston from doing that. The high lubricity of the coating and the texture makes it oil better. Making the piston actually run closer to the bore will transfer heat from the piston to the bore better. This can make a poor designed piston run even better than it has a right to. We started using this last season. Every engine we used this in has won major races. The very first engine we tried this in, in fact has not ever been beat yet. I believe in Line2Line coatings and will use it in everything possible.

     Bench Evaluation: Disassemble, evaluate all measurements and document only. No charge with Race Prep. Reassemble after cleaning parts if further work is not done by WPT. If/When we prepare your race engine, the above is not charged. It is part of doing it right. We need to know what you need first.

     Dynamometer Break-In Service: Highly recommended. Our test facility can do the break-in of your engine better and in more controlled conditions than can be done on a boat. This saves you time as your engine is delivered to you with knowledge that it runs correctly and is race ready.

     Dynamometer Service: Racers may come to our facility or ship engines to WPT for Dyno tuning and evaluation of many engines in a days time. See which of your engines is better and tune the best performance out of each one. Fuels, Jetting, Timing and even Spark Plugs, are things you can now verify with solid data, no longer just opinion.

     Providing Us With Equipment: You need to provide good parts to work from and WPT can prepare Quality, Legal Race Engine using techniques acquired from 25 years of preparing race engines. Each engine is prepared to the best of the ability of the parts provided. New parts will be recommended when required. It is our goal to make every engine, a winning engine.

  • Cylinder Honing – $20.00 (each cylinder)
  • Diamond Cylinder Honing – $30.00 (each cylinder)
  • Cylinder Boring – $55.00 (each cylinder)
  • Sleeve Replacement – $200.00 (each cylinder)
  • Chrome or Nikisil Plated Cylinder Repair – $125 -190.00 (each cylinder)