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Max Effort steel connecting rods that can survive racing at 250+hp per cylinder typically have to be made bulky enough that their weight can cause bearing longevity issues in an engine that has to last through a season of racing.
The faster you spin a heavy duty piston and rod, the more force it pinches the bearings with. If a bearing gets pinched too hard it will fail and take the engine out with it. You always want to use the lightest weight engine parts that will survive at your intended power and abuse level. The lighter the weight, the easier it is on the bearings, and the longer they will live.
Aluminum rods are often lighter than max effort steel rods, but can survive at the same power levels. Also, aluminum being softer than steel makes it a better "shock absorber" between the opposing forces of the piston and the crankshaft changing direction, which allows the bearing to live longer without giving out and taking the engine with it.
Aluminum rod are a safer choice for maximum effort race engines than steel. The downside to aluminum rods are that they expand with heat (like a piston) so the heat growth must be accounted for in the rod length and bearing clearance. Aluminum rods will also change shape sooner than a steel rod will, so figure that a set of aluminum rods will probably last about as long as the aluminum piston they are attached to and should be replaced when the pistons are replaced.
If you have questions regarding if aluminum rods are appropriate for your build, please reach out to us and let us help you make the best decision for your engine.
Rod bearings are not included in this listing, but these are the approved doweled rod bearing part numbers that can be used with this rod:
CLEVITE CB-1665HXND
CLEVITE CB-1665HNDK
ACL 1B1665HD-STD
ACL 1B1665HXD
ACL 1B1665HD-01
KING CR1708XPD
KING CR1708XPDC
KING CR1708XPD STDX
KING CR1708XPDC STDX
You may return most new, unopened items within 30 days of delivery for a full refund. We'll also pay the return shipping costs if the return is a result of our error (you received an incorrect or defective item, etc.).
You should expect to receive your refund within four weeks of giving your package to the return shipper, however, in many cases you will receive a refund more quickly. This time period includes the transit time for us to receive your return from the shipper (5 to 10 business days), the time it takes us to process your return once we receive it (3 to 5 business days), and the time it takes your bank to process our refund request (5 to 10 business days).
If you need to return an item, simply login to your account, view the order using the "Complete Orders" link under the My Account menu and click the Return Item(s) button. We'll notify you via e-mail of your refund once we've received and processed the returned item.
We can ship to virtually any address in the world. Note that there are restrictions on some products, and some products cannot be shipped to international destinations.
When you place an order, we will estimate shipping and delivery dates for you based on the availability of your items and the shipping options you choose. Depending on the shipping provider you choose, shipping date estimates may appear on the shipping quotes page.
Please also note that the shipping rates for many items we sell are weight-based. The weight of any such item can be found on its detail page. To reflect the policies of the shipping companies we use, all weights will be rounded up to the next full pound.
Max Effort steel connecting rods that can survive racing at 250+hp per cylinder typically have to be made bulky enough that their weight can cause bearing longevity issues in an engine that has to...
Max Effort steel connecting rods that can survive racing at 250+hp per cylinder typically have to be made bulky enough that their weight can cause bearing longevity issues in an engine that has to...
Max Effort steel connecting rods that can survive racing at 250+hp per cylinder typically have to be made bulky enough that their weight can cause bearing longevity issues in an engine that has to...
Max Effort steel connecting rods that can survive racing at 250+hp per cylinder typically have to be made bulky enough that their weight can cause bearing longevity issues in an engine that has to...
Max Effort steel connecting rods that can survive racing at 250+hp per cylinder typically have to be made bulky enough that their weight can cause bearing longevity issues in an engine that has to...
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