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wkebrdr 
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Joined: April-08-2024 Location: 64078 Status: Offline Points: 1 |
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 Posted: April-09-2024 at 11:56am |
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I searched around, but what spark plugs are you using since going to the DUI?
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Bill
92 Ski |
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malcolm2
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Joined: June-13-2010 Location: Nashville Status: Offline Points: 239 |
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Posted: April-09-2024 at 12:23pm |
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I will have to check. I don't remember off-hand. I will get back here and reply with that. It has been quite a while, and I will say that this change was fan-dam-tastic. No more hiccups, super quick starts. ZERO ISSUES.
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Jonny Quest
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Joined: August-20-2013 Location: Utah--via Texas Status: Offline Points: 3070 |
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Posted: April-09-2024 at 1:18pm |
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Autolite 764 or 104 plugs. 0.055 gap with the DUI.
JQ
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Current
2003 Ski Nautique 206 Limited Previous 2001 Ski Nautique Open Bow 1994 Ski Nautique Open Bow Aqua skiing, ergo sum |
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KENO
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Joined: June-06-2004 Location: United States Status: Offline Points: 11443 |
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Posted: April-09-2024 at 6:08pm |
Since this is your first post, nobody knows whether your engine has the standard heads or gt40 heads. So..........the bestest, most correctest answer is to use the same plugs that are in it now because there were different plugs depending on the heads used
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1993R
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Joined: July-27-2005 Location: Hawthorne, FL. Status: Offline Points: 52 |
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Posted: June-29-2024 at 7:36pm |
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I just did this conversion on my 92 ski
Same boat as JPAss Everything installed easy and my distributor is positioned just like the photos TDC has been checked twice. Wires installed properly. Only issue is motor and starter are turning but no fire to plug wires Checked power to the HEI and it’s moves between 11 and 12 volts when cranking Checked my grounds seem okay Haven’t run new the power and ground wires to dash yet DEI said it sounded like the unit needed to be grounded and offered a suggestion on how to test it It didn’t change anything Any suggestions ? |
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KENO
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Joined: June-06-2004 Location: United States Status: Offline Points: 11443 |
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Posted: June-30-2024 at 1:36pm |
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Where are you checking power to the distributor? At the (+) terminal on the cap
Is the tach terminal hooked to the boat's gray tach wire? Nothing else hooked to the tach terminal Silly question, but is the 3 wire plug from the distributor plugged into the cap firmly? All 4 connections on the ignition module under the cap connected?
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rosconole
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Joined: May-10-2008 Location: United States Status: Offline Points: 765 |
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Posted: June-30-2024 at 4:01pm |
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Just hold the wires together put your foot in a bucket of water and crank it. Let me know if you feel anything.
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1989 ski nautique ,1991 barefoot nautique, 1993 Mustang Cobra 1998 5.0 Magazine shootout invitee
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KENO
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Posted: July-03-2024 at 11:23am |
You got this thing making noises like a running engine yet?
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1993R
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Joined: July-27-2005 Location: Hawthorne, FL. Status: Offline Points: 52 |
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Posted: July-03-2024 at 1:44pm |
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Keno
I will be jumping in it tonight
Got tied up at work but have next 5 days off You may have solved it via the tach wire I don’t have it going directly to the HEI Will route it properly and hopefully she fires up It’s been pretty hot in FL so early morning late nights are only times to work on stuff and feel comfortable Would like to get back to skiing again Will keep you posted Thanks |
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KENO
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Posted: July-03-2024 at 7:22pm |
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Hope you get going in time for the long weekend The Red wire in the picture is the only one that needs to be hooked up. The connection next to it is for the tach and if it's grounded, the coil won't spark. It's normally hooked to nothing at all or to the tach wire that runs up to the dash.  |
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1993R
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Joined: July-27-2005 Location: Hawthorne, FL. Status: Offline Points: 52 |
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Posted: January-06-2025 at 2:34pm |
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Update
Sorry for the long delay My boat is up and running strong and starts like it’s brand new again I did some extra work to get there I did replace the starter solenoid and both push button fuses I rewired everything in 10 ga including the tack wire and the power wire to the HEI Removed all non essential wires from harnes Refinished the old protect mount in black crinkle finish and loomed all the wires Install looks clean and factory Boat fired right up Only two questions 1) the electrical connections had a black silicon applied at factory to help water proof Anybody know if it’s a specific brand and type. I would like to reapply . 2) The timing is currently set at 10 BTC and 800 rpm. I want to adjust it . From what I’m reading it should be 12 BTC at 600 rpm at idle correct ? I plan on retiming the boat but will be sending the carb out for a complete refresh and want everything to be spot on Thanks |
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KENO
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Posted: January-07-2025 at 8:48am |
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I'd check the total advance at about 3500 RPM before doing anything, so you know what you have.
DUI likes to say that there's 24 degrees of advance at 3000 RPM the way it's shipped to you. Add that 24 to 10 degrees of initial and you get 34. It seems like numerous people around here get anywhere from 20 to 24 degrees added to their initial when they check, with a lot in the 22ish area. 34 plus or minus 2 would be a good total number to have depending on what octane gas you're using. So setting it for whatever initial gives 34 total would be a good start. You might be there now or have to advance it a little 600 ish RPM in gear sounds good for idle RPM Not knowing what connections you want to cover in black goop, I guess I don't really see the need I'd wait till the carburetor comes back before doing the timing and idle adjustments unless you just want to practice doing it
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rosconole
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Posted: January-07-2025 at 8:53am |
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40 degrees of timing ??? are you trying to sell an engine as well?? A GT 40 perhaps .
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1989 ski nautique ,1991 barefoot nautique, 1993 Mustang Cobra 1998 5.0 Magazine shootout invitee
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KENO
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Posted: January-07-2025 at 9:17am |
Umm, Roscoe, maybe you need to clean your glasses or go brush up on your math skills or something.
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The Dude
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Joined: October-19-2004 Location: Houston Status: Offline Points: 1354 |
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Posted: May-29-2025 at 9:21am |
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Whilst replacing heads, I noticed the Protec is leaking the gooey stuff down on to the tranny. Any guesses on how long do I have before I have to switch out the Protec?
I'm also sad that (most) all the pics are gone from this thread. Does anyone have a bunch of pictures they can email to me?
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rosconole
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Posted: May-29-2025 at 12:47pm |
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Probably will have issues with backfiring and crossfiring ignition at anytime going forward or being stranded. Thats the epoxy in coil packs going bad.
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1989 ski nautique ,1991 barefoot nautique, 1993 Mustang Cobra 1998 5.0 Magazine shootout invitee
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The Dude
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Posted: May-29-2025 at 8:20pm |
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Red is out of stock. Is this the correct DUI?
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The Dude
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Posted: May-29-2025 at 8:24pm |
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Or do I need this one that says Reverse Rotation?
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TRBenj
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Joined: June-29-2005 Location: NWCT Status: Offline Points: 21228 |
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Posted: May-29-2025 at 9:04pm |
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Unlikely… but post your engine tag to be sure. Don’t recall seeing any RH Protec boats though.
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KENO
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Posted: May-29-2025 at 9:12pm |
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I try not to answer stuff on DUI and Quick Fuel conversions because I figure that by now Jonny Quest has PM'd you with a bunch of info and his phone number and if he hasn't, then send him a PM
But anyways, normal rotation engine which I'm about 100% sure you have (firing order 1 3 7 2 6 5 4 8 going counter clockwise around the cap) takes the first one you linked. If by some strange chance you have a reverse rotation engine (firing order 1 8 4 5 6 2 7 3 going the same Counterclockwise direction) then it would be the more expensive one,
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rosconole
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Joined: May-10-2008 Location: United States Status: Offline Points: 765 |
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Posted: May-29-2025 at 9:48pm |
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Double check the engine tag but likely you need RR
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1989 ski nautique ,1991 barefoot nautique, 1993 Mustang Cobra 1998 5.0 Magazine shootout invitee
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The Dude
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Posted: May-29-2025 at 9:53pm |
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Engine tag starts PLP. Firing order 1 3 7 6 ...
so first one I linked. Correct? |
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KENO
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Posted: May-29-2025 at 9:57pm |
Yep correct, but your firing order starts with 1 3 7 2........... ends with 6 5 4 8
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The Dude
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Posted: May-29-2025 at 11:13pm |
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ooopsie.
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KENO
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Posted: May-30-2025 at 7:27am |
Nah.........The oopsie would have been buying the wrong distributor
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The Dude
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Posted: June-04-2025 at 9:27pm |
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Swap done. Started and ran. Haven’t water tested and only set timing in driveway, which should be fine I think.
Need to buy new plug wires and make it look good. Thanks for all the help. |
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wkebrdr wrote: