Muncie Posted September 13 Author Share Posted September 13 Slazz applied with a hand cut new (not cork) gasket to hold everything together and it seems good. All back together fingers crossed this is actually a fix rather than bodge. Resisted urge to drive it any further then the end of street a few times to warm engine up and the stalling issue is now gone completely. Will let it sit overnight and test drive. 7 Quote Link to comment Share on other sites More sharing options...
Muncie Posted September 13 Author Share Posted September 13 Yes! Yes! Yes! Sealant has set it starts and idles requires a bit of jandal to get going but then sits happy as, I can tune that out easy enough though it may self learn enough driving it around its not run in this part of map on the reflash before. It would die as soon as it saw load before you had to stab the gas to get past it and fight against the high idle either spinning wheels on poor mans antilag or pushing the front at times was a pig to get on ramps! I also tamed the exhaust leak on drivers side while I had inlet pipe off still needs doing but I might sneak a pass down strip as is. 3 Quote Link to comment Share on other sites More sharing options...
Muncie Posted September 15 Author Share Posted September 15 It's idling at 600rpm now and drives like it's stock again. Exhaust rattles are getting picked up as knock and pulling a little timing in the 300rpm it occurs, so that's interesting. using it to run around today it's driving so nice apart from the ride is a little harsher than I would like over the shit Waikato roads. Oh and trans flares on part throttle WOT is solid as on power mode it's fine. 5 Quote Link to comment Share on other sites More sharing options...
jakesae101 Posted September 15 Share Posted September 15 Have you looked at doing a servo upgrade to a corvette one ? Should give you a bit more apply pressure. Quote Link to comment Share on other sites More sharing options...
Muncie Posted September 15 Author Share Posted September 15 2 hours ago, jakesae101 said: Have you looked at doing a servo upgrade to a corvette one ? Should give you a bit more apply pressure. Yup $500 bucks for shift kit quite daunting job though auto transmissions are black magic to me, it's definitely on the list. I have a file that i redid the pressures but because of the vacuum leaks i decided not to make too many changes. Think im safe to flash that in now. With the better tyres on back its not spinning and bringing on torque management anymore it just grips and goes! Mrs got in drivers seat today and reported its nice to drive. Quote Link to comment Share on other sites More sharing options...
jakesae101 Posted September 15 Share Posted September 15 Corvette servo is about 80-90$ and can be done without ripping stuff apart, my v8 4l60 took 250rwkw for years and 305 for a while before i changed to a built trans but it was still fine and it had just the servo upgrade. Quote Link to comment Share on other sites More sharing options...
Muncie Posted September 15 Author Share Posted September 15 16 minutes ago, jakesae101 said: Corvette servo is about 80-90$ and can be done without ripping stuff apart, my v8 4l60 took 250rwkw for years and 305 for a while before i changed to a built trans but it was still fine and it had just the servo upgrade. Shit really? I'll get one of those on way asap Quote Link to comment Share on other sites More sharing options...
tortron Posted September 15 Share Posted September 15 I got my corvette servo off rockauto, they also have shift kits 3 Quote Link to comment Share on other sites More sharing options...
Muncie Posted September 20 Author Share Posted September 20 With the idle issue from hell sorted....... (what a bastard that was) I've leaned it out a bit after switching fuel to NPD 100 octane from Gull E10 and it runs mint but noticeably stinks not sure where that is coming in to car, will look in to that. Spent a night or 2 going through shift tables while out of town for work and added 9psi to 1-2 shift and 6psi to the 3-4 as well as cutting the shift times down that's settled down the flare I was getting. It's doesn't chirp first to second or anything but when you give it beans now it bites shifts lightening fast and feels rock solid. Will order a servo upgrade as well but at least it's not cooking clutches anymore it's due for a trans service so might do everything at same time. Swapping my Bridgestone RE003 to the back has fixed the traction issues they are a bit tall gearing wise but I have some Hoosier slicks for drag day. Drag day Prep- Fit MLS manifold gaskets Service trans Fit big fuel pump and regulator, runs fine as is enough fuel but won't be if I turn boost up. Un-turbo get wof and refit. Not a huge list but a few hours work will try take a few days leave. 6 Quote Link to comment Share on other sites More sharing options...
Muncie Posted September 29 Author Share Posted September 29 Drag day prep time, since I did the exhaust it hasn't had any front mounts it's always hung off the turbo which is bloody naughty no flexi joint and all one piece from the front pipe. So its time to fix all of that and get rid of a God awful exhaust rattle that's driven me nuts. Switch to the MLS Exhaust Manifold gaskets then refit the exhaust add in a vband and the flexi joint mounts etc after all that remove the turbo and make up a bypass from Manifold straight to downpipe...... then get a wof. Just bloody get it certed? Yeah I've got a few more things I want to do suspension wise so I best buy myself some time to do all at once. 5 Quote Link to comment Share on other sites More sharing options...
Muncie Posted September 29 Author Share Posted September 29 That grubby old EGR valve can piss off as well now I can kill that DTC and maybe repurpose the input for another 0-5volt sensor. 1 Quote Link to comment Share on other sites More sharing options...
Muncie Posted September 30 Author Share Posted September 30 Found source of exhaust leak, my Manifold has very little meat on one side of the flange this may be a casting defect as my original doesn't have this issue and the new gaskets probably won't seal on what's left as they are a round port. My welding job has held up on the bits I added on so fairly confident building up with mig and shaping up with some careful filing will get enough beef for it to seal properly. 8 Quote Link to comment Share on other sites More sharing options...
Muncie Posted October 1 Author Share Posted October 1 After seeing the gasket I went back and all up added about 5-6mm of extra meat. If gaskets could talk this one was struggling. All back together felt way nicer bolts went snug then about 90 degrees they were tight all nice an even. old gaskets a few bolts had backed off I even went back after a few weeks and hit them again last time. 5 Quote Link to comment Share on other sites More sharing options...
Muncie Posted October 1 Author Share Posted October 1 On to the drivers side now doesn't need much to manifold few minor tweaks to the crossover pipe needed as it rattles on subframe. I've chopped the exhaust into 3 bits so I can get mounted and supported nicely I went massive originaly so I didn't need to drop exhaust at track but will be nice to be able to drop in section should I blow trans or something. Not kidding myself things are gonna break........ might as well make it easy to fix huh? Oh and I've order the corvette servo. 2 Quote Link to comment Share on other sites More sharing options...
shrike Posted October 1 Share Posted October 1 20 minutes ago, Muncie said: On to the drivers side now doesn't need much to manifold few minor tweaks to the crossover pipe needed as it rattles on subframe. I've chopped the exhaust into 3 bits so I can get mounted and supported nicely I went massive originaly so I didn't need to drop exhaust at track but will be nice to be able to drop in section should I blow trans or something. Not kidding myself things are gonna break........ might as well make it easy to fix huh? Oh and I've order the corvette servo. Got a spare trans? Quote Link to comment Share on other sites More sharing options...
Muncie Posted October 1 Author Share Posted October 1 20 minutes ago, shrike said: Got a spare trans? Not yet undecided what to build what do the LS Engined cars run? Is it a stronger unit. Have a dude lined up to build a hi stall though. Quote Link to comment Share on other sites More sharing options...
Muncie Posted October 2 Author Share Posted October 2 If anyone has fitted one of these before let me know seems simple enough. 2 Quote Link to comment Share on other sites More sharing options...
shrike Posted October 3 Share Posted October 3 On 01/10/2024 at 16:57, Muncie said: Not yet undecided what to build what do the LS Engined cars run? Is it a stronger unit. Have a dude lined up to build a hi stall though. Did some googling what I could find below 4L60E is mentioned which you may already have 6L45 is a lighter duty transmission 350Nm max input torque vs 450Nm for 6L50 these came on the newer V6 Holdens (6speed) 6L80E 6speed box (V8) 6L90 or 8L90 are other options (V8) 8L90 is rated up to 1000Nm. 8HP box is another option with an adapter setup Depends what your goals are Quote Link to comment Share on other sites More sharing options...
tortron Posted October 3 Share Posted October 3 This is really good. In-depth rebuild of a 4l60e. Can follow the steps to disassemble and reassemble 1 Quote Link to comment Share on other sites More sharing options...
Muncie Posted October 3 Author Share Posted October 3 Fluked been able fit the flexi in up nice and high behind the steering rack straight off the down pipe so even better i somehow raised everything about 50mm and everything is falling into place "so nice" @zach_munce has been at me to lower it so I should be able too and still have nothing hanging down to far. Once exhaust is sorted and has lots of mounts on it I'll take turbo off and go get a Wof. Looking real good for drag day! 6 Quote Link to comment Share on other sites More sharing options...
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