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what is the going $$ for 502 MPIs
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Looking @ selling my 1998 502 MPIs with Gaffrig K+N filters, the rest is stock and they are in EXCELLENT shape w/ approx 300 hours.
Here is a pic before I installed the Gaffrig air cleaners. Thanks, Dean |
Re: what is the going $$ for 502 MPIs
Dean ...When you figure it out pm me. :D
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Re: what is the going $$ for 502 MPIs
Originally Posted by R Addiction
Dean ...When you figure it out pm me. :D
R, Are you looking for 1 or 2 ? Thanks, Dean |
Re: what is the going $$ for 502 MPIs
Dean, I take it you are looking to sell the 502s and pick up a pair of HP500s? I thought you were selling a couple HP500s from your post on the other thread on what 1997 HP500s are worth.
Just asking because I may be looking for a HP500 myself. |
Re: what is the going $$ for 502 MPIs
Dean-
Why would you take out EFI motors and put in HP 500's? You can build 500hp out of a 502 MPI really easy. I think this would be a step backwards. Of course this is just my opinon. Don |
Re: what is the going $$ for 502 MPIs
Originally Posted by R Addiction
Dean ...When you figure it out pm me. :D
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Re: what is the going $$ for 502 MPIs
Originally Posted by dgduck13
Dean-
Why would you take out EFI motors and put in HP 500's? You can build 500hp out of a 502 MPI really easy. I think this would be a step backwards. Of course this is just my opinon. Don I'm moving up your way next month, maybe see ya on the river this year. I agree with the above statement. The motors in my Cafe were warmed up with just a cam change, ecm tune, and some head work. Made 515HP on the dyno easy. Better to do it that way and you'll have motors you know and will be brand new. I would never buy a used motor and put it in without taking it apart first. I dont care who you get it from you never know whats inside till you look. If you need some help let me know, Ive built several of them. Dan BTW...in ans to your question.....3-3500K undressed. You can get new for around 6K |
Re: what is the going $$ for 502 MPIs
Originally Posted by DanB
Hi Dean
I'm moving up your way next month, maybe see ya on the river this year. I agree with the above statement. The motors in my Cafe were warmed up with just a cam change, ecm tune, and some head work. Made 515HP on the dyno easy. Better to do it that way and you'll have motors you know and will be brand new. I would never buy a used motor and put it in without taking it apart first. I dont care who you get it from you never know whats inside till you look. If you need some help let me know, Ive built several of them. Dan BTW...in ans to your question.....3-3500K undressed. You can get new for around 6K COOOLLLLL! Where are you moving to? The Hp500s are from a very good friend, and I know the exact history of them, in fact I drove/tested about 1/2 of the hours that are on them now. I figure if I can do the deal, I'm going to buy the HP 500's first and have them gone thru, and they will be good as new! I just saw an ad in the classified for my exact motor, 70 hrs less running time, for $7700! :eek: I'm thinking a more realistic # is $6000-6500 apiece, full dress. They are in AWESOME shape and ready to go. Let me know when you are moving Dan, maybe we can give you a hand, if I'm in town. It would be great to have you and the family up here to hang with! You have to come over to the TIKI bar for an adult beverage, on us of course! :drink: Dean BTW, we are going with a small group, (that is getting bigger everyday) to Hontoon's on the St. Johns River for Memorial day weekend, you are more than welcome. We are staying @ www.hontoon.com |
Re: what is the going $$ for 502 MPIs
Dean , I'm interested in one and Cuda may be interested in the other.... If the price is right :D
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Re: what is the going $$ for 502 MPIs
Originally Posted by Dean Ferry
Dan,
COOOLLLLL! Where are you moving to? The Hp500s are from a very good friend, and I know the exact history of them, in fact I drove/tested about 1/2 of the hours that are on them now. I figure if I can do the deal, I'm going to buy the HP 500's first and have them gone thru, and they will be good as new! I just saw an ad in the classified for my exact motor, 70 hrs less running time, for $7700! :eek: I'm thinking a more realistic # is $6000-6500 apiece, full dress. They are in AWESOME shape and ready to go. Let me know when you are moving Dan, maybe we can give you a hand, if I'm in town. It would be great to have you and the family up here to hang with! You have to come over to the TIKI bar for an adult beverage, on us of course! :drink: Dean BTW, we are going with a small group, (that is getting bigger everyday) to Hontoon's on the St. Johns River for Memorial day weekend, you are more than welcome. We are staying @ www.hontoon.com Dean Moving to DeBary...about a mile from the launch ramp on the St Johns. Should be in Apr 4. Got the movers all lined up. If all goes as planned meeting on Mem day should be no problem. Dan |
Re: what is the going $$ for 502 MPIs
Originally Posted by dgduck13
Dean-
Why would you take out EFI motors and put in HP 500's? You can build 500hp out of a 502 MPI really easy. I think this would be a step backwards. Of course this is just my opinon. Don |
Re: what is the going $$ for 502 MPIs
Originally Posted by noboat
It's a tough call. I am considering doing the exact same thing. What I consider is reliability and resale. I can pull my own motor and install another easily. However, I cannot tear my motor apart, change the cam, reflash the ECU, etc, etc. Now I have to find and trust someone to do that. You read a ton of horror stories on this board about motor builds that go south which is scary. Also, I think a boat with a stock HP500 carb will be worth more than a boat with a modified MPI black 502 mag with 500 hp.
500hp out of a 502 MPI canbe done with out a cam change or head work. All you would need to do if change exhaust, modify the intake, recal ecu, and add MSD ignition. |
Re: what is the going $$ for 502 MPIs
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Originally Posted by dgduck13
500hp out of a 502 MPI canbe done with out a cam change or head work. All you would need to do if change exhaust, modify the intake, recal ecu, and add MSD ignition.
If so, it took a cam change, fully ported Dart Pro1 heads, roller rockers, raised compression and an improved fuel system to get the next 40 horsepower to make mine 540 horsepower. |
Re: what is the going $$ for 502 MPIs
Originally Posted by dgduck13
500hp out of a 502 MPI canbe done with out a cam change or head work. All you would need to do if change exhaust, modify the intake, recal ecu, and add MSD ignition.
What exhaust? What is done to the intake? Is this something you have pesonally done? Thanks |
Re: what is the going $$ for 502 MPIs
Dean - I cant believe your going to a place thats trying to save manatees
http://www.hontoon.com/manatee.htm unless they also have them on the menu? |
Re: what is the going $$ for 502 MPIs
Originally Posted by noboat
Interesting. First I have heard this. Everyone I have talked to says 20-25 hp gain max from "bolt-on" parts. Except a supercharger of course! :D
What exhaust? What is done to the intake? Is this something you have pesonally done? Thanks I am in the process of doing mine. I just bought a 1998 formula 382 fastech with twin 502 MPI. I have talked to Keith Ekert, Arizona Speed and Marine, and Inovation Marine. They are all telling me the same thing. 500hp is do able with a 502 MPI. The long block is basically the same as a 500HP. The main difference is the cam and the Injection. The limiting factor to a MPI is the exhaust and Intake. Change the exhaust to any good flowing manifold (stainless marine) +35HP Change Stock flame arrestor, re cal ecu, MSD ignition, and adjustable fuel regulator +30HP Extrude Honed intake manifold and shorten the intake runners +15HP So this puts you just short of 500HP. |
Re: what is the going $$ for 502 MPIs
Originally Posted by BGIII
Are you sure about that?
If so, it took a cam change, fully ported Dart Pro1 heads, roller rockers, raised compression and an improved fuel system to get the next 40 horsepower to make mine 540 horsepower. The improved fuel system is just the extrude honed intake with shortened runners along with the adjustable fuel regulator (same as what I will be running). The cam change will give you 10-15hp. The roller rockers give you 5hp and the heads give 20hp. The kieth eckert exhaust manfolds and the raised compression make up the rest of the difference. My opinnion is that you have the best engine package ever made...........by anyone! I wish they were still in the marine market. |
Re: what is the going $$ for 502 MPIs
Originally Posted by dgduck13
I am in the process of doing mine. I just bought a 1998 formula 382 fastech with twin 502 MPI. I have talked to Keith Ekert, Arizona Speed and Marine, and Inovation Marine.
They are all telling me the same thing. 500hp is do able with a 502 MPI. The long block is basically the same as a 500HP. The main difference is the cam and the Injection. The limiting factor to a MPI is the exhaust and Intake. Change the exhaust to any good flowing manifold (stainless marine) +35HP Change Stock flame arrestor, re cal ecu, MSD ignition, and adjustable fuel regulator +30HP Extrude Honed intake manifold and shorten the intake runners +15HP So this puts you just short of 500HP. However, please don't take this the wrong way, but I don't buy those numbers. The 502 mag upgrades have been beaten to death here and on other boards for years and if it were that easy then everyone would have 500+hp 502 mags. I'm sure there's some performance to be gained but I seriously doubt it will be close to an 80 hp increase. |
Re: what is the going $$ for 502 MPIs
Originally Posted by noboat
Actually, IF those numbers are real that puts you over 500(about 525) because the 502 mag is 415 at the prop.
However, please don't take this the wrong way, but I don't buy those numbers. The 502 mag upgrades have been beaten to death here and on other boards for years and if it were that easy then everyone would have 500+hp 502 mags. I'm sure there's some performance to be gained but I seriously doubt it will be close to an 80 hp increase. I know that mercrusier says that it is 415 at the prop, but a friend of mine had his stock 502 on a dyno last year before doing some upgrades and they were right around 415HP. I think that Mercuriser had a misprint in there advertising. |
Re: what is the going $$ for 502 MPIs
dgduck13,
I would strongly advise you to speak with Tyler Crockett before you spend any of your hard earned money on this project. BTW, my fuel system has an additional electric fuel pump and larger lines going to the engine along with the adjustable fuel pressure regulator and ported intake. This guy is doing a Crockett setup: http://www.hotboat.net/forums/showthread.php?t=98928 |
Re: what is the going $$ for 502 MPIs
Originally Posted by BGIII
dgduck13,
I would strongly advise you to speak with Tyler Crockett before you spend any of your hard earned money on this project. BTW, my fuel system has an additional electric fuel pump and larger lines going to the engine along with the adjustable fuel pressure regulator and ported intake. This guy is doing a Crockett setup: http://www.hotboat.net/forums/showthread.php?t=98928 Thanks for the link. I will look into it....... |
Re: what is the going $$ for 502 MPIs
Originally Posted by dgduck13
I know that mercrusier says that it is 415 at the prop, but a friend of mine had his stock 502 on a dyno last year before doing some upgrades and they were right around 415HP. I think that Mercuriser had a misprint in there advertising.
I second talking to Tyler, very honest guy that builds real hp. |
Re: what is the going $$ for 502 MPIs
Originally Posted by noboat
And the blacks were typically overrated while the blues underrated. Which is why I love the HP500 motor!
The 500HP is overrated just like the black motors. I have dynp sheets to prove that...... The 525HP is underrated by a little. |
Re: what is the going $$ for 502 MPIs
Originally Posted by dgduck13
The 500HP is overrated just like the black motors. I have dynp sheets to prove that......
The 525HP is underrated by a little. Are you putting your motors on the dyno and installing the parts? I would love to see what kind of real world numbers you get. |
Re: what is the going $$ for 502 MPIs
Originally Posted by noboat
I am just going by what I have read on here and other boating forums over the last 5 or 6 years. HP500s seem to dyno at 500 or a higher.
Are you putting your motors on the dyno and installing the parts? I would love to see what kind of real world numbers you get. I am hoping to get on the dyno around mid april. |
Re: what is the going $$ for 502 MPIs
Hey dg, what do you think an entire FI setup is worth on the used market? Someday, I would like to go to 540's and I don't think this Merc FI system will handle it and will probably have to switch over to carbs.
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Re: what is the going $$ for 502 MPIs
Originally Posted by BGIII
Hey dg, what do you think an entire FI setup is worth on the used market? Someday, I would like to go to 540's and I don't think this Merc FI system will handle it and will probably have to switch over to carbs.
I think your FI will handle 540's. Lingenfelter made 540's that were 585HP-595Hp and they used the same FI, just a different ECM calibration. |
Re: what is the going $$ for 502 MPIs
Originally Posted by dgduck13
I think your FI will handle 540's. Lingenfelter made 540's that were 585HP-595Hp and they used the same FI, just a different ECM calibration.
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Re: what is the going $$ for 502 MPIs
Originally Posted by dgduck13
I am hoping to get on the dyno around mid april.
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Re: what is the going $$ for 502 MPIs
Originally Posted by BGIII
Same injectors too?
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Re: what is the going $$ for 502 MPIs
I'd have to say that the injectors were swapped out for big 'uns!! :D
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Re: what is the going $$ for 502 MPIs
Well,
Back to my question, what are they worth? And my thought is it will be easier for my to sell my 502 MPIs intact, and install the HP500's and get an known package that will work. Thanks for all the ideas guys, as I started down the "Modify the 502 MPIs" route, and then the HP500's came onto the radar screen. Dean |
Re: what is the going $$ for 502 MPIs
Dean
Jim Rose, Biloxi, MS, here. I'm restoring a 1973 33' Cary (that actually survived Katrina in the water) and need two 502's. Please let me know your status at 800-545-4307 or [email protected](that's an 'i' as in Interstate 55) Jim Rose |
Re: what is the going $$ for 502 MPIs
Originally Posted by Dean Ferry
Well,
Back to my question, what are they worth? And my thought is it will be easier for my to sell my 502 MPIs intact, and install the HP500's and get an known package that will work. Thanks for all the ideas guys, as I started down the "Modify the 502 MPIs" route, and then the HP500's came onto the radar screen. Dean IMO, you're not going to get 500hp with bolt ons. However, my engine is freashwith all new rings, bearings, gaskets, etc so the idea of a procharger still keeps popping into my head! :D |
Re: what is the going $$ for 502 MPIs
Dean, you gonna sell those 502's or what?
Please let me (us) know. |
Re: what is the going $$ for 502 MPIs
Dean ..whenever you sell those motors please let me know what i should ask for...I have 2 1998 mpi's also with apprx 325 hrs with drives and gimbals .. we removed to install 2 new diesel packages in a fountain.. need to move .they are in the way.. thanks nick 813-417-6424
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Re: what is the going $$ for 502 MPIs
Anyone ever get a good base price for a full dressed 502 ?
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Re: what is the going $$ for 502 MPIs
Originally Posted by jerosejr
Dean, you gonna sell those 502's or what?
Please let me (us) know. Jer, Sent you a PM. Dean |
Re: what is the going $$ for 502 MPIs
I have New marine 502's. Long blocks for $4,995 or Fully dressed/complete for $9250
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