35 Alura Repower vs Rebuild

[Bondo]

Re: 35 Alura Repower vs Rebuild

Ah the hose fits on a compressor got it. Do i put each on at tdc and do it to all of em?

Ayuh,....

 

[cpenrose]

Re: 35 Alura Repower vs Rebuild

This is just a question, with the crusader power pack sd, what else would you need to drop two of them in?http://www.pleasurecraft.com/PEG_Press_Kit/sterndrive.pdf

 

[cpenrose]

Re: 35 Alura Repower vs Rebuild

What am I missing here, the power pack sd is 6200, but the captains choice is 10. What would you be missing out on?

 

[500dollar744ti]

Re: 35 Alura Repower vs Rebuild

Power Pack SD is based on the old Vortec 350cid GM engine, essentially the same SBC that appeared in the 50's. It's a strong engine with loads of reliability but the design is fairly dated and less efficient.

Captains choice 6.0 uses the far advanced/superior GM LSx based small-block which have become the new standard of efficient pushrod v8 power. They are more efficient, have more power and everything is modern.

The power pak SD is essentially the same engine found in late 90's GM trucks. The captains choice is in the engine family used for the 2013 Corvettes, GM trucks, and other high performance applications. They really are an amazing engine.

 

[cpenrose]

Re: 35 Alura Repower vs Rebuild

Would they be more efficient than an the 360s?

 

[matt167]

Re: 35 Alura Repower vs Rebuild

You can buy a lot of gas for $10k, but yes, a bit more efficent, but not enough to warrant a repower

 

[500dollar744ti]

Re: 35 Alura Repower vs Rebuild

Either would be more efficient but the Captains choice would be the most economical and powerful.

I agree with the other folks though, if the 360 motors have good compression, oil pressure and leakdown test passes, there's no reason to re-power.

You can buy a lot of gas for the price of a re-power as someone said already.

 

[cpenrose]

Re: 35 Alura Repower vs Rebuild

Were definitely rebuilding them. The question is rebuild or replace. The thing that makes me not trust rebuilding is the fact that the starboard one was already rebuilt in 2010.

 

[matt167]

Re: 35 Alura Repower vs Rebuild

So what makes them need rebuilt? Have you checked compression, leak down, oil for water or bearing material? If no then you have not even attempted to fix a simple problem.. $6-10k is a lot of money, too much to spend when an engine may need a new carburator or top end rebuild at most.

 

[cpenrose]

Re: 35 Alura Repower vs Rebuild

I haven't had time to do anything. Tomorrow were heading down to put a riser on the port engine. We have a MAJOR exhaust leak, so this should fix it. We might stay and go out sat, if so I'll try to push her up to 3000+ rpms just to see what will happen. By the way, my uncle is a master mechanic for AAA, and he agrees to a rebuild. Just not a replacement. We would also switch to fuel injection, anyone know any for marine that bolt on just like the carb?

 

[matt167]

Re: 35 Alura Repower vs Rebuild

You have not done any testing to figure out what is wrong.. But a rebuild will fix it Yep. The 'pro's' speak... You can bolt on the TBI from any of the marine TBI fuel injection systems with an adaptor but good luck getting GM parts to work on a Mopar engine.. You likely have a carburator problem as was noted very early in this thread, plus everything else was suggested very early ( compression, leakdown ect... ) that you have ignored, and your still stuck on it needing an engine rebuild.. Well if you add fuel injection to a Mopar 360, you will end up with fueling issues, timing issues and overall running issues unless you can actually get it tuned out and parts working correctly,. and that's going to be hard without an oxygen sensor.


Fix the riser, rebuild the carbs and run compression/ leak down tests...

 

[Bondo]

Re: 35 Alura Repower vs Rebuild

You have not done any testing to figure out what is wrong.. But a rebuild will fix it Yep. The 'pro's' speak... You can bolt on the TBI from any of the marine TBI fuel injection systems with an adaptor but good luck getting GM parts to work on a Mopar engine.. You likely have a carburator problem as was noted very early in this thread, plus everything else was suggested very early ( compression, leakdown ect... ) that you have ignored, and your still stuck on it needing an engine rebuild.. Well if you add fuel injection to a Mopar 360, you will end up with fueling issues, timing issues and overall running issues unless you can actually get it tuned out and parts working correctly,. and that's going to be hard without an oxygen sensor.


Fix the riser, rebuild the carbs and run compression/ leak down tests...

Ayuh,.... And,... All of the complaints are 'bout the motor's Accessories, not the actual basic Motor,....

 

[500dollar744ti]

Re: 35 Alura Repower vs Rebuild

We would also switch to fuel injection, anyone know any for marine that bolt on just like the carb?

I don't know of any fuel injected marine 360. Many Dodge trucks from the 90's and early 2000's have fuel injected 360 engines, you would probably have to source EFI from one of those. If you can find an aftermarket TBI setup for a standard carb manifold, you should be able to use that as well.

You don't need EFI though, a properly working carb does the same thing. When I first got my boat, the carburetor was in need of a rebuild, it kept stalling, wouldn't idle and wouldn't plane out. Once I got a proper carb on there, whaddya know, boat runs perfect up to 50mph. If I switched to EFI, I would have got the same results albeit through more hassle.

Having a carb on a boat is nice because it's mechanical and reliable, you don't have high pressure fuel pumps to go bad, electronics to corrode and trouble codes to diagnose. I'm 29 years old, have had fuel injection on everything I've owned until my boat and I found out that a carb is not an archaic wasteful device, it actually works quite well.

 

[cpenrose]

Re: 35 Alura Repower vs Rebuild

We had both carbs rebuilt a few month's ago by someone who only works on carbs. We heard that there were many people who say they can fix but can't, and this guy was supposedly great. So tonight while my uncle puts on the riser I'll do everything you said. By the way I don't know if you guys know I'm 14, and It probably seems like I don't have a dad... lol, but I do he's just mechanically clueless.

 

[matt167]

Re: 35 Alura Repower vs Rebuild

A rebuilt carb does not mean a good carb, but the ignition system/ points could be out and causing it to run like that also.. If the carbs do not have flat surfaces then they won't work right. This is why some rebuilders choose to mill the carb hard parts to get them sealing right...

 

[cpenrose]

Re: 35 Alura Repower vs Rebuild

where do you mean there should be a flat surface? Where it sits on the engine?

 

[Ned L]

Re: 35 Alura Repower vs Rebuild

I didn't see where ignition timing was mentioned, that should be checked also. If that's way off it can cause odd problems. Keep in mind that a marine engine is in an enclosed space and a car engine is basically wide open below it, so it is pretty normal to smell things around a marine engine that you don't around an automotive engine (esp. if the marine engine has not been run hard in a good while.)

 

[cpenrose]

Re: 35 Alura Repower vs Rebuild

We had er up to 18-20 knts when we bought er but we only have done 10 up here.

 

[matt167]

Re: 35 Alura Repower vs Rebuild

where do you mean there should be a flat surface? Where it sits on the engine?

The carb body parts, and the carb base. If it's tweaked and leaking internally it will cause issues. I'v had carb guys mess my carbs up before.

 

[cpenrose]

Re: 35 Alura Repower vs Rebuild

We got rained out today and tom... Were going to Ireland Sunday, so again no maintenance but the manifold will still be put on Sunday.