Wel looking up the part numbers looks like that list is close to 5k per moter. And I think I’d still need all the fuel pumps and misc parts. I may be wrong though. But if that’s around 5 k per moter plus blower that’s about what a whipple kit would run. Ugh so many options. I think at this point I have it narrowed to either stick with the 575 sci injection or stick brand new carbs on it.

Just saw above post sorry thanks so much for taking the time to list that all!!!!! Gives me a lot to think about !!

https://cimg0.ibsrv.net/gimg/www.off...5f39b40625.jpg



Here`s some options I have set up for Guardian mode .

So the first one is Coolant temp sensor , if the ECU sees temp over 160* it`ll limit power to 2500rpm, once it goes below 150* power is restored.
You get the idea for the others .
I have set up a few more since like water pressure.. so if I throw a belt on the water pump (which has happened) the ECU will know way before I realize what happened .Lots of damage can be avoided.

Kvogt what What efi set up are you running ?

Im my opinion Eddies injector plate option would probably be the easiest and simplest option.

That’s really cool man set up awesome to!!! Props on all that hard work

https://cimg8.ibsrv.net/gimg/www.off...45f6f32025.jpg


Still looks like carbs :-) I kept all the same throttle linkages which made it easier.


I love information so the holley screens really hit all the right buttons for me , I can scroll thru many different screens and set up the info I wanna see . the best part is for the gauges and screens all it requires is a data wire.
I got rid of probably 30lbs of sender wires and hoses.

https://cimg2.ibsrv.net/gimg/www.off...b91bd7a491.jpg


the Holley EFI gauges also use one data wire and the power and ground just piggy back to each gauge.




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So clean man great job !!!!

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Did I mention you can also then go into the software and set the gauges up for warning and alerts etc ?

It`s quite great :Score-101010:

I love that stuff !!!! Wish I could afford all that !!!!going to have to think all this over

I really like all the screens and being able to see all the gauges

Icdedppl, sounds like the Holley is handling all the ignition functions as well as the fuel side ? So you'd lose a lot of the features you mention if you just bought it for the fuel injection and kept the original ignition? Great job. What you learned and did with your engines probably deserves it's own thread in addition to the one you already have.

might as well throw some more money into the bottomless pit called boats right ? :faint2:

That’s what I’m trying to figure out if I can just run my msd and just buy injection

yes sir, I wanted the hot spark of the coil on plug and the control over timing and fuel .
Fuel injection alone might be fine for NA motor.
With a blower you want a 3D map to control fuel and timing based on boost . IMOP that`s the safest/better set up.
With the coil on plug there`s no need for a distributor so Alex recommended the Holley dual sync which is much simpler to install and set up then a crank trigger.



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and I was going to make a post with step by step how I set up everything but ever since I pissed off sydeways it`s been very difficult to log on (didn ban me but had to use a different browser to log on ....till this new version ) so I said fuc%$ that site .

I'm so pissed off at carbs I'm considering switching. Just n.a. but still won't idle / shift for **** and no one I know locally has been able to fix it despite hours of effort. Shouldn't be this hard.

Well I have seen carb engines that are tuned correct run very well. I think all set ups have there problems. I have seen efi run very well but I have also seen efi have problems and take a lot of time and money to chance down. I think it’s all in luck of the draw and a good tuner whether he is armed with a screw driver for a carb or a lab top for efi lol

Send them to Nickerson.

I appreciate the advice but I already went the custom route with Patrick/ ProSystems and everyone speaks highly of him also. As some idiot once said "fool me once and I'll get off the shelf marine Quick Fuels, fool me twice I'll get fuel injection, fool me three times and I'll save my pennies and send the whole damn thing to Innovation Marine" or maybe offer to put icdedppl up for the weekend to tune the damn carbs

No doubt carbed motors can run perfect, much more radical engines than mine run great with carbs. Mine just choose not to.

Hopefully you get it figured out man !!!

Thanks, hopefully whatever decision you come to works out.

Thanks and I appreciate everyone’s input!!! Not sure what direction to go but I’ll figure out in time I’ll have to keep researching. In the mean time I have a ton of grinding to do. Working on getting cabin all ready to glass up and replace all the stringers. Thanks again for all your input and keep it coming !!! Does anyone here have 8-71 on 575 with stock heads and stock injection with dyno numbers ??

Around 1000 hp each.
Cost: I don't keep track on most stuff on the boat because it will bum me out, but it was more than 12k but no way was it 20k. I went with a custom setup using the Holley Dominator ecu.
12 injectors. 8 at low rpm and then the other 4 come on.
Sequential fuel strategy so There is some adjustment of fuel distribution.
Crank trigger.
Dual O2 closed loop.
custom injector block placing the injectors at a 30 degree down angle.
2100 cfm each throttle bodies from Accufab.
individual coils.

How man that’s really awesome!!! Looks great and sounds like a awesome set up

When I put the Holley efi on in 2013, the main reason for going that route was to learn efi. I didn't really care about the cost. Now I figured out it pays for itself both in fuel and rebuild costs. I've also come to the conclusion that idling big blower motors with carbs is about the worst thing you can do to them.

I completely understand. I love learning new things. And not afraid to take on the uncertainty I mean heck I cut the hole boat apart lol just going to have to keep pricing stuff.

Did you examine the hull using a moisture meter to find the transom and stringer rot ? Or did you find it during disassembly ? Ed

never never never keep boat receipts. Fools game

Quite the project you've got going here! Best of success with it!

Thanks !!! So after talking with a few builders and Gary dire from Dyersblowers.com about his age 71 kit he gave me a few phone numbers from guys that are running those if you guys have good dental results with the 871 blower with stack throttle bodies in good shape making over 800 hp so I think with my throttle bodies being brand new from Tyler Crocket I will use the 871 conversion kit run my throttle bodies and have Tyler Criket to them if I can get anywhere between 775 and 800 I would be very happy

Regarding the hull This whole project started last year because the transom was soft around the Port Drive as I tightened up the inner transom assembly I heard it crack he so I knew I had to replace the transom I also want to re-paint the outside of the boat at that time that’s when I had snowballed into fixing all the small stress cracks I figured at this point in time I might as will check the fuel tank stringers and fuel tanks because I never wanted to be this far into the boat again after pulling tanks and realizing how wet the foam was it was time to replace the stringersAt that point is when I found that the forward bulkhead by the front of the fuel tanks by the cabin entrance was completely rotted I can see why it holds so much water in that area I would be willing to bet any 90s boat of this area has a bad bulkhead up front at that point in time is when I decided to cut the liner out and add the bulk heads back in to make is stronger and lighter. And here we are lol

Don't forget this option.
https://cimg1.ibsrv.net/gimg/www.off...581e03e27e.jpg

Thats what I've been told about marriage too.... unless she's rich. :lolhit::angry-smiley-038::D:ernaehrung004:

That looks a very interesting option !!!! Going to have to look into that I winter if my stock ecm would control that ???

Lots of questions about that setup. Would it really be beneficial to have individual injectors like that when they are firing into the same case as throttle body injection would? Maybe slightly better fuel dispersion?

Edit- here is the sales pitch

Description

This is the first ever supercharger that we’ve tailored directly for EFI. Traditionally, you would run EFI with an injector plate on top of the supercharger. Where this works, we have found increased performance by bringing the fuel injectors down into the side of the blower case. Air flows better and easier when it is dry. By injecting fuel mid way in the case, it allows dry air to more efficiently fill the rotor cavity at a higher velocity. This increase in air velocity equates to more volume, which ultimately means more boost. We are also taking advantage of the cooling effects of the fuel. The blower needs the fuel to help cool and lubricate the rotors. This new location injects the fuel right where the blower is starting to heat the air. After being subjected to Drag Week in 2019, we’ve seen that this increased volume with a cooler air charge is a “win-win” situation in the blower world resulting in a more efficient supercharger.

Great sales pitch lol. I talked to Tyler in depth about this along with Gary Dyer. And a few guys who have the 871 blower on 575 with stock heads. Big roller cam some head work and a tune there making 800. One guy made 819 with the stock stuff and has been running it a few problem free years. At this point I think since I have everything and it is all new any way from Tyler I mis we’ll use it. I will have him come down and tune it at the lake. If I can get close to 800 per moter it will run real strong. And the is prolly the limit for my drives. They say 800hp with the hd upper gears witch I do have and the sport lowers. Luckily my drives have all that stuff. Thanks again for all the input and pictures you guys have some great set ups !!!!

https://cimg9.ibsrv.net/gimg/www.off...6e7814ee2.jpeg

My whipple is injected at the rear of the supercharger before air is compressed. Not sure what temp waters you run in but the moac Whipple intercooler was so efficient fuel was liquifying in the intercooler again. I removed the two stage water pump to alleviate this problem but now I only have water flowing through the intercooler at about 3500rpm and up. Great thread btw, been lurking for a while.

Thanks !!!! It’s been a fun build with tons more to go!!! Got some good progress on the billit platform I’ll post that stuff soon. We did custom transom plates we engraved the boats name in them and working in some other cool odds and ends. Thanks for all the support lol it’s been a long project already but can’t wait to see how it comes out !!!