keltik Posted December 14, 2020 Author Share Posted December 14, 2020 5 hours ago, vk327 said: if you get hold of an ALDL cable I can go thru how to setup tunerpro on a laptop to view live data which will talk without the BCM heartbeat signal, prob easier than that old tech 1. Trevor at Holden diagnostics sells the envyous customs ALDL to usb cables, looks like you need the memcal setup properly to delete the trans faults too, Trevor does memcals for my Jetbost standalone wiring setups so knows what works. Yeah deleting trans codes would be choice, should get rid of the evap/purge codes while I'm at it then I can throw that solenoid away. I've got a spare EPROM to have a go at ruining. Took the boat out yesterday and it ran the best it ever has. I don't know if I'm just imagining it or if it really has picked up some power. Managed to suck some air into the pump mid turn, a 3.8 with 3ft of straight exhaust hitting rev limiter unexpectedly made me shit myself. I reckon with the motor running correctly and the pump freshened up, I'll be getting well above the hulls comfortable speed range. It feels sketchy as frig above 50 as it is. 4 1 Quote Link to comment Share on other sites More sharing options...
tortron Posted December 14, 2020 Share Posted December 14, 2020 how good is a 3.8 at full mang tho beeautifyl 3 Quote Link to comment Share on other sites More sharing options...
johnnyfive Posted December 14, 2020 Share Posted December 14, 2020 I demand more nang footage Quote Link to comment Share on other sites More sharing options...
keltik Posted December 14, 2020 Author Share Posted December 14, 2020 7 minutes ago, johnnyfive said: I demand more nang footage Nang is your job. I'll provide the moo 1 1 2 Quote Link to comment Share on other sites More sharing options...
Muncie Posted December 21, 2020 Share Posted December 21, 2020 @vk327 would it be possible to shove a vx-vy Ecu in so he can just flash stuff in direct without having to crack open the waterproof housing? Quote Link to comment Share on other sites More sharing options...
vk327 Posted December 21, 2020 Share Posted December 21, 2020 1 hour ago, Muncie said: @vk327 would it be possible to shove a vx-vy Ecu in so he can just flash stuff in direct without having to crack open the waterproof housing? would need to modify a vx/vy loom to standalone and run that the sistema and expanding foam is a bit crap haha, the ones I sell are in a proper enclosure 2 Quote Link to comment Share on other sites More sharing options...
nzstato Posted December 21, 2020 Share Posted December 21, 2020 How long before you hit the Kaituna? 4 4 Quote Link to comment Share on other sites More sharing options...
keltik Posted December 21, 2020 Author Share Posted December 21, 2020 5 hours ago, vk327 said: the sistema and expanding foam is a bit crap How dare you sir! Have already modified the enclosure to one that has half a chance of working. If the ECU gets wet now, it's because the boat sank. And tbh at that point, I don't care. I'm liking the VS setup just fine so feel no need to change. I'd never bother swapping to anything short of a Link and I wouldn't bother doing that in this hull. 1 Quote Link to comment Share on other sites More sharing options...
Popular Post johnnyfive Posted December 29, 2020 Popular Post Share Posted December 29, 2020 angery cow moo 10 Quote Link to comment Share on other sites More sharing options...
keltik Posted January 2, 2021 Author Share Posted January 2, 2021 So now that j5 and vg both have working boats, it's my turn to break down. On the way back to the ramp from the harbour trip yesterday, I started hearing a bit of a whine noise from mine. I stopped off at the dam on the way home to have a quick run in fresh water and the whine turned into a full gilly drive blower out the hood spec whine with a side of fucked rear diff roar. The front oil seal on the pump had popped out and thrown it's grease everywhere. Since there's only one bearing - diagnosis was pretty easy. Took the drive shaft, yoke and front bearing carrier off. The bearing is still tight on the impeller/main shaft so I've posted on the jbnz forum for advice on how to pull it. After reading the manual, I'm pretty sure there's supposed to be 3 oil seals behind the bearing and the cavity these seals sit in gets periodically oiled. Then there's a weep hole to alert you the seals are shit before the water takes out your front bearing. On my unit, the oiling hole for this cavity is pristine and untouched for several years and what I think is the weep hole is full of bathroom sealant. I think I can put 2+2 together here. The impellers look alright and tip clearance isn't great but also isn't terrible so i'm going to leave all of the back end alone. 4 1 Quote Link to comment Share on other sites More sharing options...
Vintage Grumble Posted January 2, 2021 Share Posted January 2, 2021 If the bearing is chooched, I know a guy that can get four point/QJ bearings for reasonable prices. 1 Quote Link to comment Share on other sites More sharing options...
keltik Posted January 3, 2021 Author Share Posted January 3, 2021 22 hours ago, Vintage Grumble said: If the bearing is chooched, I know a guy that can get four point/QJ bearings for reasonable prices. Get us one of these please love - this ones fucked. Previous owner has indeed filled the seal lubrication hole with silicone. Everything has also been reassembled less the electrical insulation stuff so the front bearing was pretty loose in the outer housing - had not been loctited into place as they recommend. Might need to get someone talented on a lathe to spin up a new spacer. This ones got a pretty decent groove in it from the oil seal and the front edge is also chooched so i cant just turn it round. I really hope its not part of the shaft! I guess I'll find out soon enough once I get a suitable sized puller to go in there. 5 2 Quote Link to comment Share on other sites More sharing options...
keltik Posted January 16, 2021 Author Share Posted January 16, 2021 Found a puller and got that collar off the shaft. After that, I ended up taking the back end apart so I could slide the shaft out the back. The impellers actually weren't as bad as I was expecting. The tip clearance is more than I'd like and the leading edges are a bit battered but they'll get the job done. 2 Quote Link to comment Share on other sites More sharing options...
Popular Post keltik Posted January 16, 2021 Author Popular Post Share Posted January 16, 2021 Got the local engineer to spin up a new spacer for me, cleaned everything up and started reassembly. Got some new oil seals and loctite, the packaging was excellent. I glued the front bearing into it's housing with the loctite after cutting some shims to keep it centered in the bore and to electrically insulate it from the aluminium. Discovered a couple of sad threads. I can't quite tell what they were tapped to but some brand new M10 bolts tightened up ok. If I ever put this stuff into a new hull, must remember to get some threadserts installed while it's out. Finished reassembling everything and went for a gentle squirt about the lake to run the bearing in without the engine cover fitted so I could keep an eye on things. Noticed large amounts of oil smoke billowing from the right hand bank. Turns out there's a sneaky hole in one rocker cover weeing oil onto the headers. There's also a lot of smokey blow-by coming out of that hole but we won't think about that for now....we're just going to 'fix' it. Back to the lake tomorrow for a good extended run with VG and J5. 10 2 Quote Link to comment Share on other sites More sharing options...
Popular Post keltik Posted January 17, 2021 Author Popular Post Share Posted January 17, 2021 10 hours ago, keltik said: There's also a lot of smokey blow-by coming out of that hole but we won't think about that for now..... And it seized. Luckily it happened on the way home in a nice flat bit of slow flowing river. Not sure if the oil temps got too high or if something else went wrong...But cylinder 6 doesn't do much any more and the plug is covered in oil. I'm not that sad about it since against all odds, I accomplished my major goal of making it to the Aniwhenua dam outlet. Mr Greer was kind enough to tow me home. 12 1 Quote Link to comment Share on other sites More sharing options...
tortron Posted January 17, 2021 Share Posted January 17, 2021 i have some pistons/rings/crank etc if you want 1 Quote Link to comment Share on other sites More sharing options...
keltik Posted January 24, 2021 Author Share Posted January 24, 2021 Secured myself a 'new' engine from a VY. Ripped out the old one and spent Saturday swapping exhaust manifolds and intake from the old motor onto the new one. One exhaust manifold was a bit banana and I knew it wouldn't seal but I bolted it on anyways. Ran the motor for a while on the hose with drive shaft disconnected and it sounded good, was a very different exhaust note to the old engine. Went out for a little test at the lake this morning and it had a big exhaust leak and developed an intermittent misfire at part throttle. Didn't want to row too far and had no tools with me so just chucked it back on the trailer. Will sort out that exhaust leak, check all the leads and then try again. 7 Quote Link to comment Share on other sites More sharing options...
keltik Posted January 24, 2021 Author Share Posted January 24, 2021 Popped the heads off the old engine and began the autopsy. Wasn't sure what I was going to find but I knew cylinder 6 had low compression and the plug on cylinder 1 was wet with water. So cylinder 6 looked alright but had a little bit of a mark on the head gasket so I think it was leaking a little out to the valley. Cylinder 1 had a very clean piston, wet plug and a head gasket that looked like this... Interesting since pulling the HT lead for cylinder 1 did give a slight exhaust note change and 6 did absolutely nothing. This all explains the blow-by coming out of the valve cover and I guess would also explain a little oil usage. Doesn't quite tell me why it seized tho. 1 Quote Link to comment Share on other sites More sharing options...
Popular Post keltik Posted January 24, 2021 Author Popular Post Share Posted January 24, 2021 Hang on...what's that sitting in cylinder 4? Oh that's the top ring. Not sure where the missing chunk of piston is but it hasn't ruined the cylinder wall or put any dings in the head. P.S I didn't mention it but this thing did start up and run on 4 quite happily after I got home. Bottom end wasn't knocky and it had oil pressure again. 8 2 1 2 Quote Link to comment Share on other sites More sharing options...
Muncie Posted January 27, 2021 Share Posted January 27, 2021 What oil do you have in it? I run penrite HPR10 In my commodore its full synthetic and it doesn't use a drop between oil changes (up to 20,000ks), these engines seem to like it and it comes out only slightly darker then it goes it. I do romp on it quite often too. Quote Link to comment Share on other sites More sharing options...
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