Another ProTec Conversion

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   Near the end of last summer, our '94 SN with the ProTec ignition and EFI/throttle body was no longer behaving nicely.  The motor wouldn't fire regularly whether warm or cold.  The idling never settled below 900 rpms, and the exhaust smell indicated a rich mixture.  The last time on the water we almost couldn't get the engine started in order to load up onto the trailer.  It was at that point I consulted the forums pages here and learned from many people who discussed their successes with converting to a carburetor and distributor.  

In December, under a shade tree out back, I slowly stripped away the original factory equipment: fuel pumps (2), ignition control module, EFI control module, trigger assembly, MAP sensor, throttle body, and the wiring harnesses supporting these components.  By the end of February a new DUI distributor, spark plug wires, fuel pump and a power source for the distributor were installed.  Unfortunately, this happy little boat project is now stalled due to carburetor shipping delays.  

Like others, I chose the Quick Fuel M-600 marine carburetor.  I purchased directly from Holley in January.  It was out of stock at the time yet the initial shipment date was mid-February.  Then it moved to early March.  Then late March.  Then early April.  Now, Holley says, "Coming Soon."  Mr. Holley:  If you're reading this, coming soon can't be soon enough.  I considered the M-650 but it too was out of stock.  I even looked at the refurbished ones.  No stock.  I wonder whether this has happened to anyone else.

This has been a fun off season project.  I owe endless thanks to Jonny Quest with his outstanding technical guidance and mentoring.  He, along with all others who ever posted comments on previous ProTec conversion procedures (yes, I read every posted topic,) deserves recognition for helping keep these boats running well.

Matt

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GOODMAN Members Profile Send Private Message Find Members Posts Add to Buddy List Newbie Joined: September-17-2024 Location: NorCal Status: Offline Points: 5	Post Options Post Reply Quote GOODMAN Report Post Thanks(0) Quote Reply Topic: Another ProTec Conversion Posted: April-07-2025 at 7:12pm
	Near the end of last summer, our '94 SN with the ProTec ignition and EFI/throttle body was no longer behaving nicely. The motor wouldn't fire regularly whether warm or cold. The idling never settled below 900 rpms, and the exhaust smell indicated a rich mixture. The last time on the water we almost couldn't get the engine started in order to load up onto the trailer. It was at that point I consulted the forums pages here and learned from many people who discussed their successes with converting to a carburetor and distributor. In December, under a shade tree out back, I slowly stripped away the original factory equipment: fuel pumps (2), ignition control module, EFI control module, trigger assembly, MAP sensor, throttle body, and the wiring harnesses supporting these components. By the end of February a new DUI distributor, spark plug wires, fuel pump and a power source for the distributor were installed. Unfortunately, this happy little boat project is now stalled due to carburetor shipping delays. Like others, I chose the Quick Fuel M-600 marine carburetor. I purchased directly from Holley in January. It was out of stock at the time yet the initial shipment date was mid-February. Then it moved to early March. Then late March. Then early April. Now, Holley says, "Coming Soon." Mr. Holley: If you're reading this, coming soon can't be soon enough. I considered the M-650 but it too was out of stock. I even looked at the refurbished ones. No stock. I wonder whether this has happened to anyone else. This has been a fun off season project. I owe endless thanks to Jonny Quest with his outstanding technical guidance and mentoring. He, along with all others who ever posted comments on previous ProTec conversion procedures (yes, I read every posted topic,) deserves recognition for helping keep these boats running well. Matt

KENO Members Profile Send Private Message Find Members Posts Add to Buddy List Grand Poobah Joined: June-06-2004 Location: United States Status: Offline Points: 11246	Post Options Post Reply Quote KENO Report Post Thanks(0) Quote Reply Posted: April-07-2025 at 7:57pm
	Maybe it's time to tell Mr. Holley that you want your money back and then you could buy one from one of a number of Ebay sellers that have them in stock. Some of the prices are less than Mr Holley's advertised price too. Here's an EBAY link link Plenty of other places with them in stock too.at a variety of prices

KENO Members Profile Send Private Message Find Members Posts Add to Buddy List Grand Poobah Joined: June-06-2004 Location: United States Status: Offline Points: 11246	Post Options Post Reply Quote KENO Report Post Thanks(0) Quote Reply Posted: April-07-2025 at 8:14pm
	Do you still have your ProTec parts hanging around? I might know someone that would be interested in them

GOODMAN Members Profile Send Private Message Find Members Posts Add to Buddy List Newbie Joined: September-17-2024 Location: NorCal Status: Offline Points: 5	Post Options Post Reply Quote GOODMAN Report Post Thanks(0) Quote Reply Posted: April-07-2025 at 8:53pm
	Thank you for the eBay idea. That is one place I hadn't checked. Yes, I do have all the original parts gathered up. I'll be happy to get whichever parts are wanted on the way to someone who can use them.

KENO Members Profile Send Private Message Find Members Posts Add to Buddy List Grand Poobah Joined: June-06-2004 Location: United States Status: Offline Points: 11246	Post Options Post Reply Quote KENO Report Post Thanks(0) Quote Reply Posted: April-10-2025 at 7:38am
	You have a PM with the person's phone number. He's out there in the same state as you

KENO Members Profile Send Private Message Find Members Posts Add to Buddy List Grand Poobah Joined: June-06-2004 Location: United States Status: Offline Points: 11246	Post Options Post Reply Quote KENO Report Post Thanks(0) Quote Reply Posted: April-10-2025 at 4:51pm
	Carnac here tells me he's getting some visions of a done deal, with a Saturday parts pickup.

GOODMAN Members Profile Send Private Message Find Members Posts Add to Buddy List Newbie Joined: September-17-2024 Location: NorCal Status: Offline Points: 5	Post Options Post Reply Quote GOODMAN Report Post Thanks(0) Quote Reply Posted: April-11-2025 at 11:39am
	Done deal. May those old parts find a good home and provide years of service on the water. Thanks KENO!

GOODMAN Members Profile Send Private Message Find Members Posts Add to Buddy List Newbie Joined: September-17-2024 Location: NorCal Status: Offline Points: 5	Post Options Post Reply Quote GOODMAN Report Post Thanks(0) Quote Reply Posted: April-15-2025 at 10:59am
	UPDATE We're still not out of the woods regarding the purchase of a new Quick Fuel marine carburetor. After learning from Holley customer service my M-600 order was way down the line, I cancelled because multiple eBay retailers had the correct unit for sale. One of those sellers included free customization in which buyers submit an engine setup questionnaire. Before shipping, their techs fine tune the units for smooth operation. Sounds pretty slick. But of course I chose a different option and now find myself back on the waiting train. Several days have passed with no signs of a tracking number on the purchase. The seller just responded that these items are drop shipped directly from Holley. That was definitely not a disclosure on the seller's ad. I'm not there yet, but I am wondering where those old ProTec parts are right now....

Another ProTec Conversion

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