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EC designed the HL-357A as a stock replacement methanol carburetor to address the problems with stock fuel tanks cracking and damaging the stock carburetor in the process. Built around the same amount of flow made by the stock carburetor. The Red 440INT is designed to prevent any modification to the intake that would gain airflow. You could say EC created one of the first spec 4-cycle kart classes.
Designed and CNC machined to match each unique intake port shape precisely at the block or cylinder head entrance. (May vary on head type and model)The resulting action is no turbulence causing misalignment and much better control of the entire intake tract's laminar flow. By using the Tillotson carburetor, we can create the best angle through the port. The pulse hole is precisely located for increase pumping action at high RPM. All installation hardware included.
If you are looking at the length of the intake as a way of port length tuning for the engine, there are a few things you need to know. The Tillotson carburetor, being a diaphragm pump carburetor, needs a good vacuum or pulse signal from the intake. If you make your intake too long, then you lose signal to the carburetor and potentially hinder its tuning and performance. Tuning your port runner length is more of an exact science than many realize, and simply adding more length doesn't always net the gains you want; where you want. Your carburetor, head ports, and cam timing, as well as where you want your engine to gain, are all part of the science of port tuning. Unless you have the equipment, time, and money, it's difficult to test the theory, and your gains may be minimal.
Returns- Returns must be communicated by customers within 7 days of delivery and sent back within 30 days to receive a refund. No returns without authorization will be accepted. All returns must be accompanied by a copy of the receipt and a note. All items must be returned complete and in new condition.
All returns are subjected to 20% processing and restocking charge after the product has been inspected. The shipping cost will not be refunded.
Refunds will be made back to the same method of payment when ordering those parts. We will not refund a different method of payment.
Non-returnable Items Include- Close Outs and Clearance Items, Special Orders, Custom Orders, Used Parts, and Cut to Length Items. (Other items may apply)
Shipping: All orders are shipped UPS Ground, UPS Surepost or USPS Priority when ordering online. Shipping charges are calculated based on weight, size, and quantity of boxes in addition to processing and handling including insurance. All shipping charges are the customer's responsibility (even if charges online are not the same as emailed or phone orders).
All standard shipping orders will be shipped within a day or two on weekdays. Orders placed on the weekend (Fri-Sun) will be shipped Monday or Tuesday or the first weekday after a holiday. Custom or Handbuilt Products may require more time to be built before shipping. For any reason, an order may be delayed or prevented you will be contacted through phone and/or email.
Express/2nd Day/Next Day Shipments: Express orders must be made by phone orders only! Orders placed after 12:00 p.m. CST. will be processed the Next Business Day. UPS will only guarantee next day shipment. If you choose 2nd-day shipments expecting it before the weekend, UPS does not guarantee its arrival
Additional Fees: Double Check that the address you gave is correct. You may be charged additional fees to redirect your package to the correct address.
PO Boxes: We can ship to PO Boxes using USPS. However, UPS will only accept shipments to a valid street address. They do not deliver to P.O. Boxes.
International Shipping: International buyers are responsible for paying duties, taxes, and applicable customs brokerage fees separate from the merchandise cost. Buyers will generally pay these fees upon receipt of your shipment. Buyers may be charged additional fees once they receive the package. Read our international policy here.
Paypal: All orders paid by a verified PayPal account will be shipped to the address on the Paypal account to comply with Paypal's policy. No Exceptions.
UPS Estimated Shipping Lead Times
USPS Estimated Shipping Lead Times