AMEN on the spin on filters

Mike

Jeff...yea I thought of the long block idea but the shipping charges for 2 long blocks plus the core return shipping charges doesnt really save me any money in the long run and its a pain to crate cores back up and ship them back out . I'm getting a deal at 7000.00 for both engines complete with all the extras. I cant beat that deal and I know Greg's work is top notch. Greg has been getting a lot of chrysler 440-M engines in for rebuild over the last 2 years from different marinas and marine mechanics in both michigan and northern ohio. Whats nice is that we can carry the long blocks in thru the side window and install them in the engine bay and then he will finish the top end after that. As far as the oil pump goes ...he is using one that he feels will do the best job for the engines duty.

Besides ...my baby is worth it ...I love this boat with a passion and it make me feel good inside knowing that I took a neglected 37 that sat unused for 13 years in a covered well and brought her back from the dead.

Dr Gonzo

Jeff...Have you or anyone else installed a remote oil filter system on a boat ? I want to install one for each engine on the bulkhead between both motors. Changing the filter on a 440 sucks due to the fact that it sits sideways and I cannot stand oil spillage in the bilge. Ill try and take pic's of the project today or tomorrow when I get the chance.

Dr Gonzo

I installed a remote filter on starbd engine where the regular filter was a major pain to access (needed to remove couch to get at the filter). I let the yard decide where to put it (a mistake) and it wound up on fwd bulkhead. Slightly inconvenient but still reachable. I still keep a pan under it in case it leaks.
Installer was lazy and didn't support the heavy hoses so that after sevl years, there was so much strain where the fitting met the filter, it leaked and I was lucky to catch it just as it cut loose. So, new fittings were made and the line is now supported in two places by heavy duty cable ties. No more strain.

The other filter is at the usual nearly 45 degree angle. I forestall serious leaks by holding a dedicated frying pan under the filter as it unscrews.

Useful when changing a filter, in addition to ziplock, are the sleeves used for home-delivering your newspaper. They are also useful as hand and arm protectors for messy jobs including painting.

I got the remote at West Marine - it was so long ago, I don't remember model but I think it was packaged for a Ford engine which is really weird. In my 32, there isn't much mounting room aft of the engines or even between them but the 'tween engine location would be nice if you can route the hose properly.

On my 37' with the old 360's I had remote filters on each engine and a oil pump out Reverso system also. It was great and I could change oil in 30 minutes with filters and new oil ready to go. On the 37 I mounted the oil filters above the transmission and slightly behind and the on the frame behind the access doors. A heavy fish bag and both filters were in it and it was taken home and burnt out in the shop stove. When I put the new 454's in the oil filters were in the same place. Hi to everyone, Capt Wayne

Great to hear from you again, buddy! How's the airboat?

Jeff

Hi guys. Feeling better now. Just got back on line. Between the flood we had here a couple years ago and my health it has been interesting. Had to give up the Captain's license because the doc didn't think I needed to be taking people for a ride on the airboat and to make the wife happy I sold it But anyway I think you are on the right track with using larger filters, it always helps to keep the oil a little cooler and great for engines.

Technically your right BUT our hulls are not built to break any speed records being wide abeam. They are much more at home being slow and stable than planning through a serious chop. Much like someone who teaches is not necessarily a Teacher.

..."On a boat the size of a marinette you could double the horsepower and only increase the speed by 5-7 miles per hour."

True, but would that sucker launch!

What the good doctor said about doubling the hp and gaining very little speed is true. Before I wised up, we had a 28 foot Bayliner with a single SB Chevy. It was a high performance (315 hp) replacement for the standard, 260 hp Volvo Penta (also a SB CHevy), but the boat went no faster. The hull design was fine up to 25 mph, but it had massive hull drag above that. In fact, a guy across the river from us dropped a 454 BB Chevy in his similar Bayliner without a significant speed increase. Later hull designs of 28 ' Bayliners easily hit high 30s with a SB Chevy. They "look" similar (I did a photographic comparison) but they perform much diferently.


The bottom line: Proper marine hull design is a complex undertaking!

Jeff

I have been reading on this and am more informed than opinioniated now than I was a while ago. Notice I did not use the word smart !!!

I am convienced our boats are planing hulls by defination. It is a little subjective because the definations are not short and sweet so it is ever so slightly argueable. but I will re-cap the points I took away below that make me feel as I do.

A planing hull on plane will have the water that has been displaced, knit back together rearward of the transom, Check yes !!

A planing hull boat will actually require less propulsion once it actually goes up on plane and begins to slide across the water. " not necessairly more fuel efficienciey " and these boats do in fact plane on top and once there can be powered down below what it took to get them on top and stay there so once again this supports the planing hull.

Another thing I read on the engineering site was that Semi Displacment hulls rarely would go more than 16 to 18 knots. I assumed this to be under a typical horsepower to weight ratio. I believe every Marinette ever built would exceed that and go faster easily with more power.

If your particullar boat wont achieve this there might be something wrong with either the power plant not producing the needed power or you might have too much from marine growth holding it back but either way the hulls on these boats certainly are of planing hull design.

A good example is my 466 Bertram, when I haul it out for work and re-do the bottom it will always give me 25.9 on the GPS and is on plane. If I let it sit too much through the summer it will pull down around 21.5 mph.