B35 repower

JohnD · Post by **JohnD** » Apr 7th, '08, 23:31

I finally took some time to upload some pictures into a slidshow.Â Progress creeps along as work and family are taking most of my time.

I've got a new appreciation for those who take on a repower/restore.Â Though the yard is doing the install, I'm doing some of the minor stuff such as cleaning an painting.Â I re-ran some plumbing and cleaned up some wiring too.Â Its a lot of work!! to say the least.

I had some challenges fitting 420hp cat 3126's into a B35 due to trans angle.Â For that hp there wasn't a 10degree down angle gear that would fit as well as the ZF280A, drop down to 350hp and you can use the zf220A.Â After looking at my options, I opted for raising the floor and sticking with the ZF280A's.

Both motors are in now and all but the ultimate alignment is done.Â The shafts were cut 1 inch too long (found out after they were installed) and need to be pulled and re-worked.Â Wiring and exhaust work needs to be done.Â All elbow's were fabricated from fiberglass where off the shelf wouldn't work, 6in straight out the back with centek mufflers.

Here's a link to the slidshow
http://s294.photobucket.com/albums/mm12 ... 19bd82.pbw

Many Thanks to the B31 & B33 communitities for help and advice.
br,
JohnD

jspiezio · Post by **jspiezio** » Apr 8th, '08, 00:02

SWEET

Ironman · Post by **Ironman** » Apr 8th, '08, 00:24

Great going,JOHN .
Nice slide show.
... I have a friend w/ a 35 Cabo ,Hes got the Cat 3124s... Man that thing flys.
Wayne.

Bruce · Post by **Bruce** » Apr 8th, '08, 02:19

Very nice job John.

John F. · Post by **John F.** » Apr 8th, '08, 06:09

Rock season is almost upon us......looks great John.

Brewster Minton · Post by **Brewster Minton** » Apr 8th, '08, 06:45

Thats a lot of hard work.Very nice

Harv · Post by **Harv** » Apr 8th, '08, 07:44

Looking good John.

scot · Post by **scot** » Apr 8th, '08, 07:49

Very nice John. The boat is really going to move.

JohnD · Post by **JohnD** » Apr 8th, '08, 09:28

Thanks! I'm thinking that in another week or so I'll be ready for a sea trial (not like I haven't said that before!).

I plan to get her home and finish the interior work there. I like the way the built in sofa's look on this boat.

http://www.yachtworld.com/core/listing/ ... 75439&url=

Though I will probably go a lot simpler for this year, I'm ready to get back on the water and stop playing boat mechanic!

JohnD · Post by **JohnD** » May 8th, '08, 09:21

I'm thinking that in another week or so I'll be ready for a sea trial (not like I haven't said that before!).

Yeah right, how about a month!!

Well, it's finally done (at least with the yard work). I still have the floor to do and 100 other odd things to do. Most importantly, it floats and runs (like a raped ape)

I ended up with 21x26" 4-blade props but know now I could go to 22in diameter and maybe some more pitch/cup.

I've made 2 runs and have 7 hrs on the motors. I didn't spend much time above 2100rpms except to test WOT for a very short time. While I definitely think some tweaking with the props could improve cruise and top end. I'm happy with it for now. The numbers below are with 2 adults and full of fuel/water. I still need to finish the floor in the salon and put the furniture in but don't think it will have any effect on the numbers.

Here are some numbers:
RPM kts
650 5.5
2000 21
2100 23
2300 25
2900 30.5 (WOT)

The boat is a lot more responsive, acceleration is effortless and pulls like a freight train. I get a kick out of slow speed maneuvering, around the dock bumping in and out of gear yields instant response.

Many thanks to all who have helped and offered encouragement along the way!

br,
JohnD

br,
John D

Charlie J · Post by **Charlie J** » May 8th, '08, 09:30

very nice john best of luck with her

34Hatt · Post by **34Hatt** » May 8th, '08, 11:34

JohnD wrote:Thanks! I'm thinking that in another week or so I'll be ready for a sea trial (not like I haven't said that before!).

I plan to get her home and finish the interior work there. I like the way the built in sofa's look on this boat.

http://www.yachtworld.com/core/listing/ ... 75439&url=

Though I will probably go a lot simpler for this year, I'm ready to get back on the water and stop playing boat mechanic!

That is a nice couch but I don't believe 30 kts with 330B's!

Yours is looking good and yes a lot of work but its worth it in the end!

dougl33 · Post by **dougl33** » May 8th, '08, 13:40

They're not 330B's. They're 420hp 3126's.

Though I do get 28-29 knots with 300hp 6BTA's in my 33.

34Hatt · Post by **34Hatt** » May 8th, '08, 14:09

dougl33 wrote:They're not 330B's. They're 420hp 3126's.

Though I do get 28-29 knots with 300hp 6BTA's in my 33.

Doug I was referring to the one on Yacht world and its a 35' with 330B's which are 315 hp and the ad say 30 Kts

dougl33 · Post by **dougl33** » May 8th, '08, 14:48

Gotcha. My bad.

Yes, I also find 30 knots hard to believe with those motors.

bob lico · Post by **bob lico** » May 8th, '08, 21:12

well john i guess you belive me on that post i told you a while back.the only differance is we used 21"x27pitch with full cup.incredible power going up on plane.looks real nice best of luck.

JohnD · Post by **JohnD** » May 9th, '08, 08:15

Thanks Dan & Doug!,

Bob, you're right I'm always willing to listen to those who've been there before me. I was working throught the boat yard(and local prop shop) to get the props and they didn't have the 21x27's so I went with 21x26's. They were kind of surprised I got it right on the first try, I said I consulted the experts!!.

br,
JohnD

Mack · Post by **Mack** » May 9th, '08, 09:12

John-
Glad to hear you are up and running. Congrats on your "new" boat.

Capt.Frank · Post by **Capt.Frank** » May 10th, '08, 10:06

Great Job John. I know that it took longer than you though but its worth it.

My dad's B35 had 315's and 27 knts was it WOT. It cruised 25 knts all day 2400. That one online is near by I will stop by and look at it. I have seen it for years but they are new motors.

bertram31.com

B35 repower

B35 repower

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