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BDHogan50
Swabbie
USA
3 Posts |
 Posted - 03/06/2010 : 22:41:46
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Hello guys,
I have been searching the forum for a couple of hours now, but I'm not sure I have found the answer to my question. I have found a Pacemaker Algas 25 sportfish, which is the ideal boat for where I am located. The issue is: The previous owner removed the engine, and now it sits, with no engine. My question to all of you is: What engine should I/ could I put in with the least trouble? I can not remember if the transmission is still there, so for our purpose, assume it is not. Thanks alot for your imput! You guys have already been a wealth of imformation! |
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BDHogan50
Swabbie
USA
3 Posts |
Posted - 03/06/2010 : 22:46:18
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| This probably could have been posted in the mechanical section, I'm sorry, and hope it's not a big deal. |
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miss nancy
OLD SALT
USA
378 Posts |
Posted - 03/07/2010 : 05:00:08
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| I have a 67' 25' express and the original engine was a 283 with a 1 to 1 borg warner. I now have a rebuilt 350 wiyh the same reverse gear. |
Paul in Maine |
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joebobb
Forum Admin
USA
444 Posts |
Posted - 03/07/2010 : 16:54:24
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Yeah, I think in general a small-block Chevy seems to be the easiest fit. The original transmission was a Borg Warner Velvet Drive 1:1. However, something to note: the original small-block (Chevies 283's and 327's) came with VERY low-rise intake manifolds...very specific to the marine industry (a Crusader casting). Later engines (Chevy 350's) also used a similar manifold. Unfortunately this manifold is no longer available and so current production, small-block Chevy based marine engines (by Crusader, Mercruiser, etc) will not fit under the engine compartment lid with the B-W transmission.
However, ZF/Hurth makes 8 degree down-angle gearboxes (ZF Marine HSW630A1). I believe (although I am not certain) that the use of one of these transmissions (which did not exist when these boats were being built) would provide a couple inches of extra clearance above the engine (because they would reduce the engine's installed angle from the original 15 degrees to 7.
This is not a 1:1 gearbox - so one would need a different propeller than the stock 13x10C. However, that shouldn't be a huge deal. The transmission seems to be available in a number of different ratios - the lowest seems to be 1.22:1.
I would suggest taking a look at the line drawings (fairly readily available) for the transmission/engine combinations that are available, and see what will be the best fit. Crusader offers engine-transmission packages with both the B-W 1:1 and the ZF down-angle - so they can probably provide line drawings of the two to permit a comparision.
Kind regards,
JoeBobb
PS: Don't worry too much about what category a post is in. If I feel something is too far from a logical location I'll just move it. But generally there's a fair amount of grey area to these categories anyway. |
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BDHogan50
Swabbie
USA
3 Posts |
Posted - 03/08/2010 : 10:13:08
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| Alright, that sounds very good. Thank you so much nancy and Joebobb! |
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retro-scoot
Buccaneer
USA
37 Posts |
Posted - 03/21/2010 : 19:38:31
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| I can attest to the clearance problem. A previous owner cut a hole in the hatch cover and installed a "hat" that protrudes @ 5" from the deck! You have to step over it to go below. Chevy 350 w/BW 1:1 |
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joebobb
Forum Admin
USA
444 Posts |
Posted - 03/22/2010 : 15:56:09
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Hi Retro-scoot,
You know those Crusader manifolds are actually not that difficult to find used. I bought one when I did my rebuild and the shop where I found mine had an earlier version too. I bought a spread-bore version for the Quadrajet, but the one from the early 1960's was designed for the square flange Rochester 4GC.
I have a bunch of pictures of Crusader engines (mostly from eBay auctions) that have the low-rise manifold.
The point being that if your engine is the older-style small-block Chevy, you could probably re-fit the manifold and get rid of the "hat".
I forget which year was the transition year for small-blocks - when they went from the original intake manifold/head design to the newer style that is no longer interchangeable.
Kind regards,
JoeBobb |
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retro-scoot
Buccaneer
USA
37 Posts |
Posted - 04/23/2010 : 21:42:20
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Hi and thanks Joebobb,
I guess changing over would be the best thing to. Of course mine has an aftermarket carb, might be a spread bore, I need to take a closer look. But first I need to get the motor hooked up and running. I just finished my Winter overhaul project on my motorcycle, so now I can start on the boat.  |
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bobozr
Sailor
USA
16 Posts |
Posted - 04/28/2010 : 14:13:25
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| My 25 FB SF has a 6.5 Penninsula diesel in it. (Hummer engine). I can attest to the fact that the ZF 8degree down angle gearbox saves a lot of headroom. |
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miss nancy
OLD SALT
USA
378 Posts |
Posted - 04/28/2010 : 15:35:36
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| How noisy is the Penninsula? Is it the one they used to market as the "Beast"? |
Paul in Maine |
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BCS
OLD SALT
USA
160 Posts |
Posted - 05/04/2010 : 22:26:20
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| Yes tell us more about this combo! Does it actually fit under the deck with the 8' trany?!?! thanks |
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bobozr
Sailor
USA
16 Posts |
Posted - 06/16/2010 : 14:08:14
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| As to the Penninsula engine. It is loud and has the usual diesel clatter. I've been playing with different props and still haven't found one that I like. The good thing is that I can cruise all day on less than 10 gallons of fuel. My boat was heavily modified by a previous owner and the exhaust goes into a fiberglass tube about 4 feet long. No sort of muffler. An after market muffler arrangement would probably quiet it down a bit if you have room for it. I believe "the Beast" is one of the versions of this engine that Penninsula offers. It comes in several versions based on the 6.5 engine, from a 160 hp non-turbo model to a 330 Hp dual turbo. Mine is the 270 hp version. Don't think this boat will ever be a speed demon based on the hull and weight, but I do enjoy the fuel savings and fact that it will start every time I hit the switch. |
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bobozr
Sailor
USA
16 Posts |
Posted - 06/16/2010 : 14:22:18
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The engine fits the hole just fine. The only departure from a normal installation seems to be the addition of an electric fuel pump. Just looking at it I believe that the mechanical pump would probably hit the starboard stringer if it was installed. The penninsula has a huge oil pan and there is only about an inch of clearance between it and the hull. Luckily whoever installed it put in remote oil filters and a drain line to attach to a pump for changing the oil.
Penninsula Diesel advertised a V6 version a couple of years ago but I haven't heard anything about it since. It was a lot smaller engine and would probably be ideal for retrofits. Don't recall the horsepower options. |
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joebobb
Forum Admin
USA
444 Posts |
Posted - 06/16/2010 : 16:10:11
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Hello Bobozr,
I (and I'm sure others) would LOVE it if you could post some pictures of the installation! Was this a factory marinized engine, or did someone marinize a used engine out of a Hummer?
Given the state of the economy and the lack of popularity for gigantic SUVs, I bet one might be able to pick up a used Hummer engine fairly reasonably.
Kind regards,
JoeBobb |
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bobozr
Sailor
USA
16 Posts |
Posted - 06/16/2010 : 23:59:08
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The engine is marinized by Peninsula Diesel and as in all such engines, the base engine is probably the cheapest part of the package. One can buy these engines for about the same price as a small block Chev. That said, the new packages from Penninsula are still about half what a comparable Yanmmar or Cummings would cost.
go to http://www.peninsulardiesel.com/WP-PENTEST/
My boat is in Panama City, about 100 miles from me right now. I get some pictures to post for you.
bob
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Engine-- 25 Sportfish
