1995 Pro boss / Pro tec

Jonny Quest wrote: Yes...the uber-scarce Holley 250R-123AA injectors. I had a shop clean and test mine. One came back “dead”. I looked for weeks in vain. I called Holley and they tried not to laugh when I asked them for replacement injectors... Best of luck to you. JQ

thanks! I need all the luck I can get :)

Yes...the uber-scarce Holley 250R-123AA injectors. I had a shop clean and test mine. One came back “dead”. I looked for weeks in vain. I called Holley and they tried not to laugh when I asked them for replacement injectors...

Best of luck to you.

JQ

Probably 2-3 years back now I bought a rebuild kit for my throttle body. It had new blades, gaskets, o-rings, and regulator. I'll see if I can find the paper with the kit # tomorrow as I can't find the email where I ordered it. I believe it ended up being for a carb but worked perfect, I think I ordered direct from Holley.

I am pretty sure the EPA would not endorse it but it has proven to work so we use it.

Kind of like the 50/50 ATF and Acetone mix that works so well to loosen rusted nuts but is never sold over the counter at any store.

Just to keep things rolling...Synthetic ATF? Dino? Dexron III? Mercon?   

JQ

Johnny, standard ATF not synthetic. I use the Dextron 3 because it is also used in my cars but I have read that the Ford ATF has more lubrication quality than Dextron.
It has been used for many years to clean injectors, started with truckers using it to clean Diesel Injectors many years ago.   It actually works very well to clean and lubricate.

MrMcD wrote: A simple trick to clean injectors is to put a quart of ATF fluid in the gas tank and go out and run it. I have seen it work many times to free up sticky injectors. It will not hurt anything and for about $4 it is worth a try. Gives you another reason to take the boat out for a long spin.   My 95 starts each season with a quart in the tank.

Just to keep things rolling...Synthetic ATF? Dino? Dexron III? Mercon?

JQ

I wonder if they can be cleaned like mpi injectors by an injector service ?

Well.... realized some bad news today....

I knew there was fuel coming from all 4 injectors.... but I didn't realize that at idle they're supposed to be "spraying" as opposed to "dribbling." I was under the assumption at first that my rich idle was the FI trying to get the engine warmed up .... but nope it's the injectors. All of them are dribbling. Unless they can be cleaned I think I'm hooped.

So I think I'm going to have to do the carb retrofit. I'm disappointed... but at the same time it will be nice to get this sorted over the winter. It appears as though everyone out there who has done the skidim carb retrofit has been very happy with it.

While doing the carb retrofit.... I'll probably do the DUI as well. So here's the thing... the Protec ignition system seems to be working flawlessly on the boat currently. It ran beautifully up to 44 mph @ 4800 rpm. Is the used protec setup worth anything? Anyone out there want a low hour spare protec system when I pull it off?

Ive read through a few threads already on the carb / dui conversion and it seems pretty straightforward. I've done a distributor swap on the 86 Nautique.

Does anyone have any recommendations/thoughts?

We had another great day on the water..... here's me and my son.

Untitled by Dwight Kinley, on Flickr

Here's the 95 Sport next to the 86

Untitled by Dwight Kinley, on Flickr

The '86 sold in 30 minutes after advertising on Facebook. No tower, no reverse, destroyed upholstery, no stringer guarantees... $1500. Gotta deliver it next month.

The best part of the day is putting a cold beer in the cupholder awaiting your return from skiing. (No beers until you're done skiing.)

Untitled by Dwight Kinley, on Flickr

Maybe some of you guys might know whats going on. With this boat... both times I've gone out on the water... it doesn't want to go past 4000 rpm until it warms up. You can mash the throttle and it simply will not go past. Once it warms up a little... the full rpm range is there. And when it kicks in and goes beyond 4K rpm... it kicks in HARD.

I popped off the air cleaner while it was idling so I could inspect the Pro boss injector pods and they seem to be spraying just fine at idle up to 1500 rpm. I didn't feel comfortable with the crew I had today to run it at speed in the 4K rpm range and watch the injectors. Do you guys have any thoughts on what the issue might be?

desertskier wrote: Some of the Nautiques sold by Century Marine were used in Firebird Lake. There is a ski club that has rights to the lake and maintain ski courses and jumps. Also, the ASU ski team uses it. The lake is salt water and if your boat was used there it could explain the rust on your engine. A friend of mine bought his '94 from Century and he found out later it was a ASU team boat used at Firebird. His risers/manifolds failed prematurely. Since the lake is in the desert the boats don't show any sign of being in salt water/air except for the exhaust. Also, your boat has the exact same trailer as his '94 made from C channel so no rusted tubes. I believe they where made by Pacific Trailer.

hmmm.... thats good to know. thanks for the insider information :)

This trailer is definitely in too good of condition to have regularly found itself in salt water.

Today I kept an eye on the risers and there was no water coming down the manifolds which I thought was weird.

Some of the Nautiques sold by Century Marine were used in Firebird Lake. There is a ski club that has rights to the lake and maintain ski courses and jumps. Also, the ASU ski team uses it. The lake is salt water and if your boat was used there it could explain the rust on your engine. A friend of mine bought his '94 from Century and he found out later it was a ASU team boat used at Firebird. His risers/manifolds failed prematurely. Since the lake is in the desert the boats don't show any sign of being in salt water/air except for the exhaust.

Also, your boat has the exact same trailer as his '94 made from C channel so no rusted tubes. I believe they where made by Pacific Trailer.

Hopefully the winter won't seem so long

Nice!!!

I picked up the Sport Nautique today! We had a couple small hiccups... the hitch was frozen in the back of the truck after driving through a huge snow storm. The wiring for the lights was incorrect and the LED lights were shot. That took a few hours and a couple trips to automotive stores to rectify.

There's a fun story with all of this... but I'll save that until the end. Here you are guys... because I know you love pics!

IMG_1482 by Dwight Kinley, on Flickr

IMG_1480 by Dwight Kinley, on Flickr

IMG_1486-1 by Dwight Kinley, on Flickr

IMG_1488 by Dwight Kinley, on Flickr

Purple rub rail! More about that in a bit.

IMG_1483 by Dwight Kinley, on Flickr

Here's where the story gets cool. We make the deal, sign papers and exchange money. The
seller hands me the keys with a cool blue Ski Nautique floatie on it. I flip it over and it says Century Marine from AZ. Keep in mind... I'm in northern Saskatchewan and I woke up to 20*F temps this morning.

IMG_1471 by Dwight Kinley, on Flickr

I sent that pic to @hansenindustries and he forwarded it onto the long term staff there and they remember selling the boat in 1995.

And it gets even cooler... the first Nautique I ever owned was a 1996 Sport Nautique in VERY similar colorway... also sold by Century Marine who remembered selling that boat as well. Here's some pics of that boat:

IMG_2217 by Dwight Kinley, on Flickr

IMG_2855-1 by Dwight Kinley, on Flickr

IMG_4478 by Dwight Kinley, on Flickr

I think it's so cool that these boats received colored rub rails.

Over the winter I'll be installing a tower and hopefully a bimini. Thanks for following this thread :)

Don't be scared of the Protec. Run it until it breaks, put a DUI in and keep the fuel injection. I still think my 1994 Supra Comp with the Protec FI 351 was faster than my 1995 Supra Comp with GT40 351