Toroidal High Compression Head for Vitos 240cc BBK+3mm Crankshaft Yamaha Blaster

Description: Yamaha Blaster Toroidal High Compression Performance Headfor Vitos 240cc Big Bore Kit and +3mm Stroker CrankshaftFits all years (88-06) This is a stock head that has been re-machined to unlock the true potential of the Blaster engine. Arguably the easiest and cheapest upgrade you can do on the Blaster that yields greater horsepower gains than any other engine upgrade. This upgrade can take a stock Blaster from 18 HP to the mid 30's. Best of all this performance upgrade doesn't require any jetting changes to your existing carburetor. Simply bolt on and ride! This head is intended to be used with a +3mm Vitos Stroker Crankshaft. Normally you would need to use a 1.5mm thick aluminum spacer under the cylinder between the case so that the piston doesn't crash into the head. This is not ideal since it alters your port timing. This head design has the clearance already machined into it so there is no need to run the spacer. A genuine Yamaha OEM base and head gasket should be used with our head to achieve the proper squish and port timing. Technical Specifications: Combustion Chamber Type: ToroidalCombustion Chamber Size: 20ccSquish Angle / Area: 11 Deg 50%Optimum Bore Size: 72mmStroke: 60mm (no cylinder base spacer)Finish Type: Vapor Honed FAQ'sDifference between Toroidal and HEMI chambers? Toroidal makes better mid-range torque and self-limits over-revs. The HEMI makes better peak power and RPM.Will I need to use race fuel? No, you can use standard 93 high octane pump gas.What base gasket will work with this? Please use a new Yamaha OEM base gasket (p/n: 3JM-11351-02-00) to achieve the proper port timing.What head gasket will work with this? Please use a new Yamaha OEM head gasket (p/n: 2XJ-11181-00-00) to achieve the proper squish.Will this require jetting changes to my carburetor? No, since this modification only changes the burn of the air/fuel mixture and not the flow. No jetting changes are needed.What bore sizes will this work with? This head is intended for the aftermaket big bore sizes (71-72mm). Best performance will be achieved with the 72mm bore. There's some pitting in the chamber of the head I received. This is normal and will not affect the performance of your head. The voids are from the original casting process of the stock head.Can you make custom heads to my specific needs? Yes we can alter any of the technical specifications listed above to your request. We can also machine HEMI style chambers. We can also machine the head to accept a +4mm or +6mm stroker crankshaft. We also offer case trenching services for +4mm and +6mm stroker crankshafts. Note: The listing pictures are for reference only. Since we re-machine used stock heads some will look slightly different than others as far as dirt and paint. However the machine work will be identical to what is shown in the pictures. We do offer a bead blasting service for our heads as a option. Please contact us for current service pricing. Satisfaction Guaranteed or your Money Back! Will Ship Within 24 Hours of Receiving PaymentInternational and One Day Express Shipping AvailableCNC Machined in the U.S.A. with FREE SHIPPING!!!

Price: 239.99 USD

Location: Wilmington, Ohio

End Time: 2024-08-30T15:33:24.000Z

Shipping Cost: 0 USD