Black Friday Specials Start Today!

We are excited to announce that we are offering 25% OFF on ALL TCM products* ordered online plus a Lifeline Comp Vest + Orange Helmet Combo Special*  for our Black Friday promotion, valid from November 27 – December 2, 2019. Continue reading

Teague On Tech: Q & A with Bob Teague November 2019

Speedbaot Magazine Cover Art

As seen in Speedboat Magazine’s November 2019 Issue.

Headers for 454
Magnum MPI

Dear Bob:

I have a 27′ Checkmate with a 454 Magnum MPI. Currently, the exhaust is stock MerCruiser cast iron manifolds and risers. The boat is also equipped with the Corsa Captain’s Call switchable system that diverts the exhaust through the pro­peller hub when activated. I need to keep the ability to silence the engine. I was planning on doing some upgrades to the engine soon with a more aggressive cam­shaft profile that is similar to what is used in the Mercury Racing 525EFI.

I have been told that my stock exhaust system will hinder performance and their use may result in exhaust water reversion with the increased cam duration.

I was considering the CMI part number 13186, but l need to know if they can be installed in conjunction with my current Captain’s Call system. If not, what system will work?


Damian Zapata Odessa, TX

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FREE Life Vest Bag From Lifeline Race Gear In November!

Free Vest Bag From Lifeline Race Gear! Shop Now!Safety First with Team Teague and Team Lifeline! Teague Custom Marine has teamed up with Lifeline Race Gear for our fall promotion. When Teague Custom Marine customers order two Lifeline Safety Vests they will get a free Vest bag!* This offer is only valid November 4-15, 2019, so act now!
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Teague On Tech: Q & A with Bob Teague September 2019

Speedboat Magazine Cover

As seen in Speedboat Magazine’s September 2019 Issue.

Props for Formula

Dear Bob:

I have a 2006 Formula 382 FasTech running twin Mercury Racing 600SCis with Bravo XR drives. The current propellers are 30-pitch lab finished Mercury Racing Bravo One 4-blades. I am looking for a mid-range cruise performance increase with a prop change. The boat currently runs 60 mph at 4000 rpm. WOT is 5,100 to 5,200 rpm at 82-84 mph. What diameter and pitch would you recommend in a Mercury Racing lab finished Maximus 5-blade propeller? Is there a long wait for a set of Maximus lab finished propellers?

I am looking to purchase immediately because my boating season is somewhat short.

Thanks for your time!

Patrick Owen, Henderson, NY

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