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Topics - Undersoul02

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Boats For Sale / 1981 Bahner Bubbledeck (SOLD)
« on: March 22, 2019, 04:34:19 PM »

Engine Mechanical / Electrical / 454 Rebuild
« on: December 05, 2017, 11:23:32 AM »
I wasn't going to post about my rebuild, but the thread this morning about the site being slow because of FB and not a lot going on changed my mind about it. So here it goes. I'll bring you all up to date and then post when things happen or when I can. By the way, I'm no where close to an expert on motors or rebuilds.

I started this project in Dec of 2016 thinking Iíd have it ready for Summer of 2017. Well, that just didnít happen. I guess most projects turn out that way. I pulled the motor because I had a lot of oil blowing out of the breathers. I tried 4 different set ups to alleviate the problem, but nothing worked so I figured it was a good time to freshen up the motor. I wasnít going to do much other then just freshen up and rebuild. Well, that changed quickly. Here's a picture before I pulled the motor.

My boy, who is 4 years old, and I pulled the motor and began tear down.  Upon inspection we found some pretty bad wear in some of the crankshaft main bearings and a hydraulic lifter that had a missing lifter cup retainer. Other than that, things looked pretty good.

My neighbor Rick, who is an Automotive Professor for our local college, has been helping me with the motor rebuild. We got the block over to his shop and got all the machine work completed. Upon inspection we found that the cylinders had already been bored .060 over. So, we honed them and got them to a finishing number of .061 over. Unbeknownst to me I had/have a 468.

Itís at this point that things began to change Rebuild wise. A friend of mine, who had rebuilt his motor the year before, had a set of Merlin heads sitting on the shelf. He told me that I could have them, free, for my build. I wasnít going to pass up the opportunity for some more bolt on HP. I picked up the heads and brought them over to the shop to begin work on them. We tore them down, cleaned them up and decided it would be good idea to have them sent out to be rebuilt by L&R Engines in Santa Fe Springs.

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I'll continue on the next post.

Engines / Engine Parts For Sale / BBC 049 Heads
« on: April 13, 2017, 12:01:01 PM »
Hey guys, I have a set of BBC 049 heads that I took off of my running 454. Asking $300 OBO

PM me for phone#


Engine Mechanical / Electrical / Motor setup?
« on: March 15, 2017, 12:29:24 PM »
Hey guys, here it goes. Iím in the midst of rebuilding my BBC and I have no idea where to go with it.
Hereís what I mean.
As is, I have a Hardin marine 454 with the 405 kit. When I bought the boat, it came with a duel Holly 650 tunnel ram, 049 heads, harman exhaust logs and snails, stock bore and domed pistons. Iím unsure of what the HP is/was. The previous owner figured around 450 hp, I donít know, but it pushed my 81 Bahner bubble deck with Berk JG pump (no droop and original nozzle) to 67 mph at 5100 rpm. Iím going to have the pump freshened up and already have a droop and place diverter ready to be installed when the motor build is complete. I know that hull set up and pump have a lot to do with MPH and will be working on that when the motor is complete. It is a delta pad hull by the way.

I pulled the motor apart because I was having blow bye on some of the cylinders. Oil through the breathers made a huge mess in my boat. :banghead:

Back to my original comment of not knowing where to go with the motor. Hereís where it gets tricky for me.

I love the ďold-schoolĒ look that the duel carb tunnel ram set up gives my boat and donít really want to change it, but I was given, for free, a set of Merlin 043-C rectangle port heads, a matched Edelbrock Victor intake manifold and a Holley 950 Carb. All this came from a friend of mine who took it off of his 2-season old BBC. He now built a 950 HP blown BBC V-drive deal and had this stuff laying around. Obviously, he wants it back if I donít use it.

I know that the Merlin heads are an ďupgradeĒ (Still heavy as hell) to the 049 heads, but Iíve also read that I can get great flow and HP numbers out of the 049 heads that I have and I wouldnít have to change the look and all the damn linkage of my boat.

So, after all of that this is what Iím trying to ask. My goal is to break into the 80-mph window. I feel like with my hull and pump set up correctly I should be able to do that with 550-600 HP at 5200-5500 RPM. Or am I bat shit crazy? Iím ok with a reality check on this. Iíd rather be realistic and not be disappointed then to be disappointed at the end of this.

Iím planning on going .60 over with a dome style piston. Hydraulic roller cam, I donít know the numbers on the cam Iím going to go with yet. I want it to be healthy, but I also want to be water reversion conscious when I choose the cam as Iím going to be running TT headers.

First, Can I achieve that HP goal with the 049 heads without having to modify them? And, should they be able to handle a healthy roller cam I throw at it?


Should I forget about the ďold-schoolĒ of the tunnel ram and go with the Merlin rectangle port heads and victor intake set up to reach my goal?

I donít mind tips on set up for the rest of the motor either!
I know that this is a very long-winded post so, thank you to those of you still reading. Hopefully you can help me on this! 

Jet Pumps / Berkeley Jet Setup questions???
« on: September 01, 2016, 02:43:32 PM »
So here it goes. I bought this 81 bubble deck Bahner last summer. I donít know much, yet, about jets and how they should be set up as this is my first jet boat. What Iím trying to figure out is where to head from here with my Berkeley set up?

Here is what I was told by the previous owner about the motor. It is a Hardin marine 454, with a 405 Kit? Does that make sense? with somewhere between 420 and 450 hp.  At WOT Iím spinning around 5100 rpm (according to my tach) and I have no reason to believe that is inaccurate. The previous owner added tunnel ram with duel 650 Holley Carbs and a Marine MSD 6M 2L. Iím unaware of any other motor work done. He provided me with maintenance records from himself and the original owner dating back to 1982. Iím the 3rd owner of this boat. I wish I could provide more info regarding the motor package.

As far as the pump. It has a Berkely JG that is as far as I know is stock with a SE sport edition loader scoop. Iím assuming itís an SE by looks only.  The only thing Iíve done to the pump is add a place diverter. Before I added the diverter I ran 64 mph via gps. After adding the diverter, I had no performance gain and speed remains at 64 mph. I donít know what impeller is in the pump at this point. By the way it does have a delta pad bottom.

So my question is what should be my next step in regards to pump set up? Iím looking for more speed/performance at this point. From what Iíve read about these hulls I should be getting better speed/performance out of it even with my low HP motor set up. I just want to take the right steps first and not just start throwing things at it without getting feedback from you guys who know first.  So where should I head next as far as set up? Or what do you guys think?

Here are some photos of the set up. If I need to take more thatís not a problem. Thanks in advance.

Random Boat Parts For Sale / BBC valve covers
« on: September 22, 2015, 09:24:08 AM »
I have a set of cast BBC valve covers - $150 obo

I will get a better pictures soon, but this is what I have for now.

The No Wake Zone / First boat
« on: May 08, 2015, 10:01:47 AM »
Hey guys, I'm some what of a lurker some what of a slow poster. I just haven't had a boat to add much content with. But, last night I went out and picked up my first boat! I can't tell you how excited I am and how long I have been looking. I've past up and said no to so many boats in the last 5 years that it was starting to feel hopeless. But!! I knew from the moment the garage door opened on this beauty last night that this was the boat. Say hello to my 1979 Bahner. It has a BBC 454. I am the third owner of this completely garage kept beauty. The Original Gel coat shines like you can't believe and everything else from the trailer to the scoop has been redone in the last 5 years. My wife and I had our first round of drinks sitting in it in the garage last night. I can't wait to get it out on the water.

Boat Racing / K-boat crash Long Beach Sprint Nationals
« on: August 04, 2014, 10:27:08 AM »
For those of you that were not at the races on Saturday this was a pretty scary crash. Glad the driver, Robbie, is doing ok. I heard he was racing another boat later in the day. Here is a video of it from youtube. Pretty amazing.

Cars / Automobiles For Sale / 2011 RZR s 800
« on: May 02, 2014, 09:32:06 AM »
For Sale 2011 RZR s 800. Custom race cage by G4products, EPI Clutch kit, Master Craft 5 point harnesses, DWT Diablo Bead lock rims with Duro Power grip tires, UMP air filter system, Dragon Fire removable steering wheel, 1 Twisted stitch bucket seat, Also comes with stock seats, AFCO Silver series race shocks. Lights and light bar. The car is set up for and ready to race in the WORCS Production 850 class. Car is located in Bellflower Ca. Asking $9,500 OBO. PM me with any questions. Ryan 562-824-six three six six, text or call.

The No Wake Zone / New Guy Here
« on: April 09, 2014, 10:22:13 AM »
New guy here! Ryanís my name and I have been a lurker for a long time but havenít made an account. I figured I might as well start one now. At this point I donít have a boat of my own, been using dadís, but Iím on the hunt for one.  I have been around boats and the river since before I can remember. Some of the best memories I have are of the river. Sitting on my dadís lap driving the boat, getting up on a single ski for the first time at the age of 6, sitting in the front of the boat thinking we were doing a 100mph but probably more like 25 or 30 (lol), floating down the river for hours with family and friends and the best memory of all taking my own son for the first time this past year. I have wanted a jet boat for as long as I can remember and now that I have my own family itís time to leave ďdadísĒ boat and get my own. I canít wait to make some more memories and meet some of you guys out on the water.


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