Steelies Posted January 16, 2017 Share Posted January 16, 2017 ok! timing was too advanced and intake manifold bolts were all in need of a quarter-turn. tightened mani, set timing and dwell to factory and waggy is running sweet! for now anyway. thanks you's guys. 4 Quote Link to comment Share on other sites More sharing options...
Seedy Al Posted January 16, 2017 Share Posted January 16, 2017 Hearts Quote Link to comment Share on other sites More sharing options...
sentra Posted January 16, 2017 Share Posted January 16, 2017 the other carb came from a seedy roadside rondevous with a molasses truck driver, he hotted it up with "big jets", you can trust him. 2 Quote Link to comment Share on other sites More sharing options...
Raizer Posted January 16, 2017 Share Posted January 16, 2017 Looking at a local Super Custom, 1kz, full time 4wd, sub 200k, new radiator but it "uses a little water on long trips". So yeah likely needs the head done sooner than later, would explain it being cheap too. Looks like a brand new compete head with gaskets and bolts etc can be had for around $1300 off trademe and even after taking that into account it's still a lot cheaper than any Super Custom on TM ATM, but my question is is it a cunt enough of a job to make it not worth while considering it'll no doubt be a Chinese head? /Would rather try to keep my Mitsi going a while longer than tick up a van I can't really afford. Dunno WTF is up with it now, started fine, went down a steep 100m+ driveway holding second gear, got on the road and gave it some gas, got a loud pop, instant thick oil smoke for a few hundred metres and it's been running rough as fuck sounding like a dying Subaru since. I've been right over the ignition side of things and can't find anything visually out of order really, massive spark from the coil, timing still bang on 5°, was a bit of shit built up on the terminals in the dizzy cap. Checked the cambelt to make sure it hadn't jumped a tooth on the timing. It still feels like an ignition issue really, but with how it seemed to come on instantly throws me a bit. Quote Link to comment Share on other sites More sharing options...
AllTorque Posted January 16, 2017 Share Posted January 16, 2017 When Coasting down a hill (engine braking) the throttle is closed, so there is a high vacuum. If your valve stem seals are shot oil gets sucked past them, then when you open the throttle it burns that oil. Sounds like oil and unburnt fuel collected in the exhaust and then ignited, blowing up your muffler. Would also be worth checking the PCV valve. With engine running pull it out of the rocker cover, it should be sucking. Put your thumb over the end and you should hear it click closed. Supercustom heads arnt too bad to fit but may be a challenge for an amateur. You will need a engine shop to swap over the valves and set the clearances. Supercustoms have two radiator. Except the early models had one. You would want to pull them out and get them cleaned out. This can be a pain in the butt job. While you are at it you would also want to replace water pump and thermostat for good measure. So yeah, the head is only half the cost. 1 Quote Link to comment Share on other sites More sharing options...
Raizer Posted January 16, 2017 Share Posted January 16, 2017 Valve stem seals are about 6 months old/probably fucked already as it smokes during long amounts of engine braking downhill. PCV is long gone, I removed it and blocked the manifold port to try combat the smoking during engine braking, since I'd fitted be stem seals I thought it may have been part of the cause. Am going to go buy a compression tester now, if compression tests OK I'll try new dizzy cap, rotor, leads and plugs. Failing that it'll finally be time to burn it. Looking at a 96 Super Custom, has had a brand new upper radiator and water pump fitted less than 6 months ago, the seller is claiming it's the lower rad using the water but admits it's possible the head is the problem. Was looking at these kits http://www.trademe.co.nz/browse/listing.aspx?id=1239724496&/listing?rfm=1 Have done a couple diesel heads before, but that was many years back and these things look to have a lot more going on than an early Pajero 4D56 or Hilux L engine. Quote Link to comment Share on other sites More sharing options...
AllTorque Posted January 16, 2017 Share Posted January 16, 2017 So pcv valve is removed. Does the engine vent to a catch can? Is it full of oil now? Quote Link to comment Share on other sites More sharing options...
Raizer Posted January 16, 2017 Share Posted January 16, 2017 The valve is still in the cam cover, nothing's come out of it but I'd assume it won't open without vacuum. The other breather at the back of the cam cover is still plumbed into the intake before the carb, doesn't look too oily inside. SCA is out of compression testers, repco is a joke price wise, going to see if I can borrow one from somewhere. /Wouldn't have expected instant burnt valve etc though and it still feels ignition related to me. Quote Link to comment Share on other sites More sharing options...
Raizer Posted January 16, 2017 Share Posted January 16, 2017 Quote Link to comment Share on other sites More sharing options...
AllTorque Posted January 16, 2017 Share Posted January 16, 2017 Without vacuum on the pcv valve the crankcase could be pressurising. Quote Link to comment Share on other sites More sharing options...
Seedy Al Posted January 16, 2017 Share Posted January 16, 2017 I was going to say burnt valve btw Quote Link to comment Share on other sites More sharing options...
Seedy Al Posted January 16, 2017 Share Posted January 16, 2017 and 1kz heads are pretty easy to do in my opioion but I do them all the time. Easy Cam belts, probably cunty part is doing up the head bolts to be honest. the last 90 degree is a real cunt in a van with a long strong arm haha 3 Quote Link to comment Share on other sites More sharing options...
Nominal Posted January 16, 2017 Share Posted January 16, 2017 Can static seat belts still be bought? Quote Link to comment Share on other sites More sharing options...
AllTorque Posted January 16, 2017 Share Posted January 16, 2017 I think repco still sell them at a crazy price. Try Belt Up. He is the mobile belt repair man. Pretty sure he will sell static belts. 1 Quote Link to comment Share on other sites More sharing options...
Raizer Posted January 16, 2017 Share Posted January 16, 2017 Am going to bite the bullet and go get a comp tester from BNT soon. Burnt valve was one of my first thoughts too, just didn't want to admit it to myself. Quote Link to comment Share on other sites More sharing options...
SOHC Posted January 17, 2017 Share Posted January 17, 2017 Smoking after engine braking down a hill can be rings to, is the oil black? Quote Link to comment Share on other sites More sharing options...
Raizer Posted January 17, 2017 Share Posted January 17, 2017 While engine braking it's grey/black, after it was full on oil blue. Quote Link to comment Share on other sites More sharing options...
Raizer Posted January 17, 2017 Share Posted January 17, 2017 Missed BNT but managed to borrow a comp tester. 2 is a little low, but have seen worse. Plugs on the other hand So yeah 2 is eating a little bit of oil. Quote Link to comment Share on other sites More sharing options...
igor Posted January 17, 2017 Share Posted January 17, 2017 I'm gonna take a wild guess and say number two is a bit dodgy. When you cleaned and re-gapped that plug how long did it run good for? Quote Link to comment Share on other sites More sharing options...
Raizer Posted January 17, 2017 Share Posted January 17, 2017 Cleaned all the plugs, it made 0 difference at all. Was expecting to find pretty much no compression in number 2 when I pulled that plug. Quote Link to comment Share on other sites More sharing options...
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.