J53 fixing up Others Engineering

[Warwick Marflitt]

So Ooh Ah has had a leak and twice the reverse bucket wouldn't couldn't work! 1st time couldn't back off the trailer, cause was the too shorter self-tapping screws holding the morse cable mount had pulled out of the wooden plate someone used to secure it... The  second time I couldn't stop(no reverse) and ended up on a log and gravel, cause was that the wooden plate holding the morse mount I fixed to it, had come off the transom!!! WTF
 On closer inspection it was only held there with a roofing tek-screw....Other peoples engineering eh! Yes I probably should have looked harder and suspected more issues? I just didn't consider the Ninglephut factor as much as maybe I should have. So this week has been find the leak week! Boy did I find the leak..... A shoddy hidden glass repair... under the engine revealed the cause... Engine out patch ripped off grinding out the de-laminated glass ready for some new solid epoxy and cloth.     

[Warwick Marflitt]

 The good thing was that under the patch/slab/ornamental biscuit was the original serial number HJ53/165 Have a few loose exhaust manifold leaks(loose bolts) Rocker cover gasket oil leaks so will do a full bolt check replace gaskets fit new reverse bucket and should be a good old boat once fixed and back together. Some would say to strip it and put into a new alloy hull but where's the fun in that? Itch..... scratch.... hang on I gotta shower and change ma clothes.....

[Kakapo76]

Good opportunity to pull the pan off of the donk and have a wee look inside? I am stuck waiting for the auto sparky to open- the gauge cluster and assorted items (wideband, bilge pump, etc) are frying themselves - think we have a bad short which is frustrating as the engine is running nicely. I have an oil leak as well so may yet pull my engine out if I can't sort it in the boat.

[Warwick Marflitt]

      Here's the mounting block they'd used. The screw was thru the fiberglass transom head was burries under Silly-Con which is what it is when used like it was.....
I will replace with Hi Density Plastic and stainless bolts washers and loc-nuts going thru transom to sandwich the lot in place for 99.999% reliability. Have new gaskets for leaking loose exhaust Manifolds.... Heaven forbid if you had fuel vapours in bilge and flames flashing past loose Manifold gaskets... Happy new year all  

[Warwick Marflitt]

  So I dug a bit deeper and the hole got bigger until all the osmosis, cracked, oil soaked old Fiberglass was removed. This will be a double sided repair with Wests 105 Epoxy and slow hardener. Using double bias mat and chopped strand that's epoxy friendly
(With no styrene).....
Strung the now empty boat off the tractor loader for a day of a Hot day of mayhem....
Lots of grinding hull outside in a paddock and on a windy day. Drank 2 liters of water and with 3 layers. 1st clothes and a pare of milking gloves and gumboots, 2nd overalls with taped up arms,legs over gumboots taped and neck. Then 3rd layer, full paper overalls, respirator, hood glasses and a visor. I plugged in 80 Grit discs on grinder and  Tore into it......!!!   

[Warwick Marflitt]

 I survived No Itching  . We want to use the boat so I will pull the jet unit when I get another aroundtooit time slot..... I probably should do it but we have a lake side hut booked in a few weeks time so I have too stop somewhere for now....   

[Warwick Marflitt]

Looks like I have a broken grill bolt to remove Rear LH one Ship happens I guess....
Here's where the Reverse cables mounting blocks attachment screw hole was..... Check your Steering system, throttle pedal, linkages, return springs n cables, Reverse bucket, mounts, levers, pivots and or cables rose joints. I reckon that a pre-flight kinda inspection. Before boating and  again if you have a Bump out on the water.... Maritime NZ/Police ect will have your bits in the vice if they can prove that you where a negligent Captain! Not knowing the rules isn't a defense anymore... Will show progress as it gets done.....   

[Kakapo76]

Funny how once you get into these jobs they take on a life of their own! She'll be a 1000 times better once you lay up a nice thick keel again. Good job mate!

[Warwick Marflitt]

Yes she's a great bit of fun alright. Might fit one of them Keel guards to add a bit more protection? Although it might channel air to the intake and make it harder to slide it around on the gravel....  Cheers Kakapo Hows the Carby V6 Honda going?

[steelo]

Good on ya Warwick. Very pleasing to see other people taking time and care to do a GOOD job. I have seen YT videos where they drill holes all along the sides of the repair. Glass fibre and resin flow into the holes and sort of stitch it together. Keep up with the pics.

[Jimmy Jet]

Nice job Warwick. Had you considered a bisalloy / hardox type skid plate along the keel?

[Paul]

If you take a belt-sander and blend the hull-to-inlet-face transition, you will see good gains - essentially adding a 'spoon' that force-feeds water into the jet.  Mark out ~50mm either side of the line where the faces meet and blend it out (- need to add GRP to the inside of the hull to make up the thickness removed).

[Swift12]

Nice Job Warwick...great repair for a great boat...im sure you'll make this look great!

[Kakapo76]

Cheers Kakapo Hows the Carby V6 Honda going?

I Will let you know Monday night- just got a care package from Summit Racing USA today- new rpm switch and wideband, so now the electrical stuff is sorted I can finally wake up the vtec and see where we are at. Looking forward to a blat up the Waimak on Waitangi day.

[Warwick Marflitt]

So before I commit to the Fiber-glassing. Should I change the bottom shape? My only reasons for this is that obviously the point of the delta gets all of the force and wear.
If I replace what I have removed It's a patch made up of differing thickness and area. If I cut out a uniform Triangle and fit a new symmetric section of hull with a slight curve as my drawings show?
My main concern is that I might be introducing Hook into the hull and I'm decreasing the displacement/Buoyancy of the hull under the heaviest area of the hull? Lastly is that I have made a mongrel out of the original HJ53 hull shape....! All and any Honest views appreciated. No ego to bruise here! I just need to get it right first time....Thanks in advance Warwick