Front Deck issue with new motors

The Main Sand Box for bertram31.com

Moderators: CaptPatrick, mike ohlstein, Bruce

Post Reply
ford351c594
Posts: 142
Joined: Jul 16th, '16, 17:01
Location: New Orleans

Front Deck issue with new motors

Post by ford351c594 »

While I was taking pictures of the rotten tank, I decided I snap a few of the engine cover issues I have now that the new engines are in....

Image

Image

they are sitting on the new exhaust risers.

I was thinking of just building up the upper deck parts about 1.5 inches and laying some glass, sand and paint. Then reattach the doors and knotch the center step part into the cabin.

Any one have any better ideas?
Ryan Randall
73 B28 flybridge
"smart people learn from their mistakes, the smartest people learn from others and their mistakes"
ford351c594
Posts: 142
Joined: Jul 16th, '16, 17:01
Location: New Orleans

Re: Front Deck issue with new motors

Post by ford351c594 »

also the question is what to build it up with....
Ryan Randall
73 B28 flybridge
"smart people learn from their mistakes, the smartest people learn from others and their mistakes"
Yannis
Senior Member
Posts: 3074
Joined: Oct 23rd, '13, 09:41
Location: Athens, Greece

Re: Front Deck issue with new motors

Post by Yannis »

Ford,

Are you sure you cannot somehow tilt those risers, so the tops can close normally?
Alternatively, could you modify them so they fit?
I suspect any of the above choices shall be more economical and less cumbersome than having to redo the engine covers.
I have diesels and managed to add risers without the need to modify the covers.
1973 B28 FBC/2007 4LHA STP's - "Phantom Duck" - Hull "BER 00794 1172"
User avatar
HilaryS
Posts: 19
Joined: Jun 16th, '10, 12:07
Location: Palm Bay FL

Re: Front Deck issue with new motors

Post by HilaryS »

I recently had a similar issue on my 28, following an engine swap. In my case the issue was resolved by shifting the engines forward.
ford351c594
Posts: 142
Joined: Jul 16th, '16, 17:01
Location: New Orleans

Re: Front Deck issue with new motors

Post by ford351c594 »

If I shifted them forward it would be get worse. With the old engines the post for the spark arrestor would hit the engine cover. That was not a huge deal. So with the new engines I found low profile intakes and the quick fuel carbs them self were about 3/4 of inch shorter than the Rochesters. So that was resolved. However I switched from rear riser log manifolds to new center riser aluminium manifolds and risers. There is no real way to modify them.

Thought about making bumps, putting the later to the flybridge on them on one side and using them to hold an ice chest on the other, but it would severely weaken the center port cover. Plus I like my flat deck.
Ryan Randall
73 B28 flybridge
"smart people learn from their mistakes, the smartest people learn from others and their mistakes"
Yannis
Senior Member
Posts: 3074
Joined: Oct 23rd, '13, 09:41
Location: Athens, Greece

Re: Front Deck issue with new motors

Post by Yannis »

Ford,

What engines do you have?
If you could take some pics with the covers open, then perhaps someone with the same engines could give some advice.
1973 B28 FBC/2007 4LHA STP's - "Phantom Duck" - Hull "BER 00794 1172"
ford351c594
Posts: 142
Joined: Jul 16th, '16, 17:01
Location: New Orleans

Re: Front Deck issue with new motors

Post by ford351c594 »

its stroked 350's. 383's. Its storming right now, so I will take some pictures later. This is them on the dyno so you can see the manifolds and risers.

Also, please note the 2in spacer below the riser is gone. That was just to add 02 sensors for setting it up correctly on the dyno.

Image
Ryan Randall
73 B28 flybridge
"smart people learn from their mistakes, the smartest people learn from others and their mistakes"
Yannis
Senior Member
Posts: 3074
Joined: Oct 23rd, '13, 09:41
Location: Athens, Greece

Re: Front Deck issue with new motors

Post by Yannis »

Hmmmm, what I see is that even if you could bring the risers lower you' might have the coolant tank or heat exchanger (whichever it is) sticking up...
Have you considered lowering the engine supports or the beams they sit on?
This is how mine are installed so they fit.
1973 B28 FBC/2007 4LHA STP's - "Phantom Duck" - Hull "BER 00794 1172"
ford351c594
Posts: 142
Joined: Jul 16th, '16, 17:01
Location: New Orleans

Re: Front Deck issue with new motors

Post by ford351c594 »

The coolant tank is lower because of the angle the engine sits at in the boat. Same reason the older rear riser manifolds fit. They were just close. If I would adjust the motors
down wouldn't I push the shaft angle out of wack?
Ryan Randall
73 B28 flybridge
"smart people learn from their mistakes, the smartest people learn from others and their mistakes"
Preston Burrows
Senior Member
Posts: 267
Joined: Jun 29th, '06, 13:30
Location: Nassau,Bahamas
Contact:

Re: Front Deck issue with new motors

Post by Preston Burrows »

What make exhaust elbows are those you have?

They look higher than 'normal', regardless of the spacers you are not using.........you may want to check, as if you are inch short you might solve via using less tall elbows if available.

Other than that maybe time for some custom stainless steel headers!
Preston Burrows
1976 B28 FBC
BERF1398M76J-285
Preston Burrows
Senior Member
Posts: 267
Joined: Jun 29th, '06, 13:30
Location: Nassau,Bahamas
Contact:

Re: Front Deck issue with new motors

Post by Preston Burrows »

This is the sort of exhaust elbow that I am referring to:

http://www.go2marine.com/product/244911 ... 98126.html
Preston Burrows
1976 B28 FBC
BERF1398M76J-285
Tony Meola
Senior Member
Posts: 7036
Joined: Jun 29th, '06, 21:24
Location: Hillsdale, New Jersey
Contact:

Re: Front Deck issue with new motors

Post by Tony Meola »

ford351c594 wrote:The coolant tank is lower because of the angle the engine sits at in the boat. Same reason the older rear riser manifolds fit. They were just close. If I would adjust the motors
down wouldn't I push the shaft angle out of wack?
Yes and no. How is the transmission set up? Does it have a down angle or it is it straight? If it has a down angle, you might be able to lower the engine and go with a straight transmission.

If not then it will be the shaft angle.

The other option is to rebuild the deck area and raise the hatch's.
1975 FBC BERG1467-315
User avatar
Carl
Senior Member
Posts: 6082
Joined: Jul 5th, '06, 06:45
Location: Staten Island NY

Re: Front Deck issue with new motors

Post by Carl »

Lots of ways to skin the cat.

Another possible down and dirty might be to laminate a spacer to top of the motor box, thus only raising top of box and hatches. Something easy to work with, Coosa, marine ply. Match perimeter contour, cutout for hatches, laminate that same step for hatches to rest.

Top is flat, sides match or can be beveled, so not alot of blending and fairing.

Or as you said raise boxs...I did that on my 31 when I went with new deck. I wanted more pitch for water to flow back. But was real easy on my 31, not sure what your 28 deck looks like to decide what is best way.


Lowering motor, sliding it back, change tranny for different angle, tweak strut angles by rebedding, if shaft log allows or custom strut and new log... switch Risers to lower profile (if you have enough rise), custom risers, all ways to get it done. Each opens its own can of worms.
Yannis
Senior Member
Posts: 3074
Joined: Oct 23rd, '13, 09:41
Location: Athens, Greece

Re: Front Deck issue with new motors

Post by Yannis »

In the case you decide to raise the covers to accommodate the risers, you could also consider the "dream" of cutting out (lowering) the middle part, so that you don't have to step- up before you step-down to the cabin; in other words make it a bit like the 31 whereby there is a gangway between the two motors leading to a flat path between the aft deck and the cabin door! A dream indeed for everyone with a bad knee condition...Don't ask me how I know...
1973 B28 FBC/2007 4LHA STP's - "Phantom Duck" - Hull "BER 00794 1172"
Tooeez
Posts: 266
Joined: Jun 24th, '14, 19:51
Location: Palm City, Fl

Re: Front Deck issue with new motors

Post by Tooeez »

A few months back someone posted pictures of a 28 with what looked like a neat solution to this problem. The upper deck area had been built up around the entire perimeter with what looked like starboard, then the original hatches and center section were reinstalled on top of it. The only drawback I could see would be a lip at the cabin door.
ford351c594
Posts: 142
Joined: Jul 16th, '16, 17:01
Location: New Orleans

Re: Front Deck issue with new motors

Post by ford351c594 »

Tooeez wrote:A few months back someone posted pictures of a 28 with what looked like a neat solution to this problem. The upper deck area had been built up around the entire perimeter with what looked like starboard, then the original hatches and center section were reinstalled on top of it. The only drawback I could see would be a lip at the cabin door.

this is what I am going to do. I have some 3/4 coosa ordered. should be here next week. I'll try to mend the step as well into the cabin and create a new drip rail as I should have plenty with a 4x8 sheet to do it all. Still have to decide what to do about the tank..... highly considering a moeller cross linked tank.
Ryan Randall
73 B28 flybridge
"smart people learn from their mistakes, the smartest people learn from others and their mistakes"
User avatar
Waytooslow
Posts: 88
Joined: Aug 20th, '16, 22:52

Re: Front Deck issue with new motors

Post by Waytooslow »

You could also switch to a low profile exhaust manifold where the risers are at the back.
This will give you some ideal: https://www.ebay.com/p/?iid=12206980524 ... rue&chn=ps
1963 B-25 Project (in process)
Atl. GA
Yannis
Senior Member
Posts: 3074
Joined: Oct 23rd, '13, 09:41
Location: Athens, Greece

Re: Front Deck issue with new motors

Post by Yannis »

1973 B28 FBC/2007 4LHA STP's - "Phantom Duck" - Hull "BER 00794 1172"
User avatar
Rawleigh
Senior Member
Posts: 3444
Joined: Jun 29th, '06, 08:30
Location: Irvington, VA

Re: Front Deck issue with new motors

Post by Rawleigh »

Wow, i like that, but it looks pricey. I wonder why Bertram didn't do that from the factory?
Rawleigh
1966 FBC 31
Yannis
Senior Member
Posts: 3074
Joined: Oct 23rd, '13, 09:41
Location: Athens, Greece

Re: Front Deck issue with new motors

Post by Yannis »

Rawleigh,

If you ask me it is because Napier wanted to differentiate from Hunt. He had already created a roomier, dryer, deeper V, so he also wanted this to show from the dock!
1973 B28 FBC/2007 4LHA STP's - "Phantom Duck" - Hull "BER 00794 1172"
ford351c594
Posts: 142
Joined: Jul 16th, '16, 17:01
Location: New Orleans

Re: Front Deck issue with new motors

Post by ford351c594 »

that is quite beautiful.....
Ryan Randall
73 B28 flybridge
"smart people learn from their mistakes, the smartest people learn from others and their mistakes"
Navatech

Re: Front Deck issue with new motors

Post by Navatech »

Rawleigh wrote:Wow, i like that, but it looks pricey.
The asking price for that 1974 B28 is 85K Euro... Roughly 92.5K US$... I'd say "pricey" is an understatement...
Rawleigh wrote:I wonder why Bertram didn't do that from the factory?
At the time Bertram was targeting the "Joe the Plumber" crowd... IOW, the common middle class American... They were selling boats... Not yachts...
User avatar
JP Dalik
Senior Member
Posts: 1317
Joined: Jun 30th, '06, 21:03
Location: Pt. Pleasant NJ
Contact:

Re: Front Deck issue with new motors

Post by JP Dalik »


At the time Bertram was targeting the "Joe the Plumber" crowd... IOW, the common middle class American... They were selling boats... Not yachts...
Bertram was always the highest priced option of boats available in the seventies, they marketed to the class that could pay a thousand dollars a foot when you could buy several other boats for almost half that much.
Bertram was never a common mans boat.

We sold the common mans boat back in the day, Topaz, aqua sport,hydra sport,luhrs
KR


JP
1977 RLDT "CHIMERA"
DAYTRIP
Posts: 26
Joined: Aug 12th, '07, 09:53

Re: Front Deck issue with new motors

Post by DAYTRIP »

Ford, if it were me I would build new hatches. Sounds harder then it is and my bet is easy then what you are contemplating. Make temporary molds with melamine and turn Down a deeper lip. I have one of these molds in my garage right now building replacement hatch for my neighbors mako. Only question is does the inboard manifold sit under the hatch or does it get into the middle deck/hatch.

Actually you could just extend the down turns on the existing hatches by building melamine mold around perimeter of existing hatches and glass on turn down. My son and I build hatches for his high school job (and my boat sickness) so I can walk you through it if you decide to go that way and need help.

Image
Post Reply

Who is online

Users browsing this forum: Bing [Bot] and 355 guests