Friday, August 28, 2009
You know the run-down of Wiseco's standard features and benefits. Well, these pistons have them all! It's made from a dedicated forging made in our Ohio forge shop for light weight and superior strength. We've designed it to give you maximum ring seal, compression, and control with a pressure seal groove and dedicated rings. Our ArmorGlide™ skirt coating reduces friction and wear. Brush deburred on the dome and valve beliefs to prevent detonation, Wiseco's Toyota Tacoma piston is the best choice for you.
It is offered in 95mm, 95.5mm, and 96mm bore sizes with a -10cc dome volume. All kits come complete with 1mm x 1.2mm x 2.8mm XX rings (stainless steel, gas nitride top ring; cast iron Napier hook second ring; and flex-vent oil ring with gas nitride scraper rails). All clips and pins are included as well to complete your engine quickly. Wiseco's kit for the Toyota Tacoma retails at $702.60. Give us a call or check out our website for more information.
Wednesday, August 26, 2009
Toyota’s Scion TC has proven itself in the racing ranks. Wiseco’s piston sets itself with extremely strong .300” ring lands and a specially designed dome/ reverse dome to compliment the combustion characteristics of the engine. Skirt coatings, offset pins, and oversize valve pockets make this the best forged piston available today. So many Wiseco features bring you BIG benefit!
Features & Benefits
Dedicated forgings -- Light weight, superior strength
Generous valve beliefs -- Allows more options for cam and valve choices
Dedicated rings -- Maximum compression and oil control
Brush de-burring -- Sharp edges removed from dome/ valve beliefs to help prevent detonation
Performance -- Pistons have wear and friction reducing skirt coating
K641M885 (88.5mm bore)
K641M89 (89mm bore)
K641M895 (89.5mm bore)
K641M90 (90mm bore)
All sizes have a 96mm stroke, 1.309" compression height, -2.9 dome volume, and 9:1 comopression.
Monday, August 24, 2009
K637M73-- 89.4mm stroke, 1.029” compression ht.
Wednesday, August 19, 2009
K636M86-- 86.00mm bore-- 9:1 compression
K636M865-- 86.50mm bore-- 9:1 compression
K636M87 --87.00mm bore-- 9:1 compression
K636M88-- 88.00mm bore-- 9:1 compression
Tuesday, August 18, 2009
Wiseco is the first in the industry to offer stroker pistons for the new 5.7 and 6.1 Hemi. These pistons have dedicated forgings, ArmorGlide™ skirt coatings, and nitrided rings. Our special skirt design and shape is perfect for street use or drag racing.
Wiseco’s new ArmorGlide™ brings you the ultimate in skirt coating toughness, lubrication, and bond technology working together to minimize friction, maximize horsepower, and provide improved wear resistance. It is a permanent skirt coating and allows the piston to be fitted tighter within the bore than non-coated pistons, bringing you better ring seal and reduced noise from piston rock. Check out our full line of 5.7 and 6.1 Hemi pistons to find what works best for you. Give us a call or contact us online at www.wiseco.com.
K465XS 3.917” bore -8cc dome volume 1.080” compression ht. 9:1 compression
K465X2 3.937” bore -8cc dome volume 1.080” compression ht. 9:1 compression
K468XS 3.917” bore +12cc dome volume 1.080” compression ht. 11:1 compression
K468X2 3.937” bore +12cc dome volume 1.080” compression ht. 11:1 compression
K466XS 3.917” bore +4cc dome volume 1.205” compression ht. 9:1 compression
K466X2 3.937” bore +4cc dome volume 1.205” compression ht. 9:1 compression
K467XS 3.917” bore +21cc dome volume 1.205” compression ht. 11:1 compression
K467X2 3.937” bore +21c dome volume 1.205” compression ht. 11:1 compression
Monday, August 17, 2009
K464F3903-- 3.903” bore, -3cc dome volume, 1.110” comp. ht.
K464FS-- 4.000” bore, -3cc dome volume, 1.110” comp. ht.
K464F05-- 4.005” bore, -3cc dome volume, 1.110” comp. ht.
K464F3-- 4.030” bore, -3cc dome volume, 1.110” comp. ht.
K464F65-- 4.065” bore, -3cc dome volume, 1.110” comp. ht.
K464F7-- 4.070” bore, -3cc dome volume, 1.110” comp. ht.
Tuesday, August 4, 2009
What are the other factors to consider when maximum horsepower is the goal?
Compression ratio and Dome/Dish volume determine combustion efficiency and resistance to detonation. Detonation can and will destroy any piston in short order. Lean conditions will melt any piston as any aluminum alloy melts within a few degrees of each other. Most of a piston's heat is dissipated through its contact with the cylinder wall and oil splash. Very short pistons and excessive clearance will melt a piston sooner. Static compression varies more than most people would believe. A piston running .020 down in the cylinder at tdc as opposed to "zero-deck" on a 64cc combustion chamber headed 350 Chevy changes the compression ratio from 10.25:1 TO 9.8:1.
People running compression ratios higher than 14:1 are not making more power if it means an increase in dome rise. More dome rise only hurts combustion efficiency which will loose more power than is gained by increasing compression. The current trend in Pro Stock, Winston cup, and others with big-budgets for engine development is to make the combustion chamber smaller and go to 12, 14, or 18 degree heads to make that happen. They are going for the shortest dome rise that gives them the compression they are looking for. The trend is to also use a bigger bore with a shorter stroke to put an engine at its best power potential for a given cubic-inch limit. One point to remember is a pro engine builder will never trade ring-seal for cubic inches from making a cylinder wall too thin.