Daves new school holden shambles. The Blue whale is back!

[zach_munce]

Chat gpt rollers look pretty cool

[Muncie]

Well just learned if you blow an intercooler pipe off after the MAF turbo moves so much air through the system the injectors go max duty cycle and foul the plugs near instantly...... 

I rolled 1.5ks home and made it up drive and couldn't push brakes hard enough to not go into fence so handbrake to rescue!

I may need to extend some pipework so I can get everything pushed in nice again, pretty sure I rushed the installation of the maf too maybe left a clamp loose. 

Goes great though!

[Muncie]

Made some center caps off aliexpress bits for about 10 bucks long wheel nuts are yuck ill get to those soon

[zach_munce]

Need to fix the monster truck ride height next

[Muncie]

Picked some scabs today as they were getting pretty worrying rust oozing out clearly some bad bad work in the past. About 5 mm of artisan applied schmoo! 

There's more cracking up further back but it's not open to the weather yet, plan will be dig out the bad stuff get some etch primer on and back fill and blow the sides of car the original colour again. 

Will sleep a bit better tonight knowing what was under the paint, was bugger all really but under bog it looked major.

[Muncie]

On another note did some more tuning got the new version that can be tuned all the way past the moon out to about saturn! Behaving nicely had to do some bizarre shit to the timing but I've now got it not freaking out under boost. 

Turns out what I thought was degrees of timing was an adder/subtractor number what I was looking at was plausible for timing numbers but wasn't....... More you know. 

So now I know which way to alter things to get the timing output going where I want it. 

[Muncie]

Woohoo!! 

Spun it to 6200rpm last night log only showed 2 knock events (not audible) in transition and I've got a whole heap of headroom now to up boost and have timing adjustable to go with it. 

Its ultra rich with weak timing as basically I'm starting from scratch again but I think I've got my head around how to get it set up and make decent power. Cheers HP academy without which my rods would have fallen out a long time ago. 

 

[Muncie]

Well Flashed in the Big Beautiful Tune Today i've been working on took for a test drive, Ultra Peppy let it warm up a bit before leaning on it too hard 70% Throttle breaks traction at 80kph WOOHOOO! on same boost. took a log everything is happy gave it a full stab holy shit.

checked logs again yup nothing to worry about lets stick 2 clicks in the boost controller........ WAAAAARP..........shit.

so 2 clicks is too much.

 

[Muncie]

So as you do dragged out my spare block and realised my scored bores turned out to be schmuts that wipes off with CRC fan bloody tastic it's good to go let's whip the sump off check the bearings, even better they're mint no end float so I'm going to order some bits and get this ready to throw in. Even better it's a L67 so is boost friendly already. 

A list of abuse this old engine has tolerated

• Multiple 220kph runs down a airfield runway most mornings for 12 months
• 20,000k services while I was doing massive ks a week during Covid working in Auckland from Waikato. 
• I ran it on waste kerosene for about 6 months 
• Ignored 4mm of end float for 5years so much so it would lose crank sync occasionally and I'd have to push crank back with my foot for it to start. 
• Fitted a turbo at 500000ks ran at 10psi for 6 months with basically stock timing (I pulled a little out but always ran 100octane)
• 40+ passes down the drag strip. 
• And finally the 16psi of boost that killed it. 

I'm absolutely OK with how much this thing has tolerated what a trooper! Now I've had a taste of what it's capable of I'll get this new engine together and maybe fork out for some dyno time. 

12's at drag day this year is the new goal. 

 

[Roman]

Far out, been through some battles! Haha. 

Chalk it up to the R&D budget! 

Cool that you've got another motor read to go already.

[Muncie]

I never intended to turbo the current engine I just mocked everything up on it and well it ran and continued to go and go. 

I finally got the tune on point and got a few good rips out of it I just probably shouldn't have got greedy and dialled up 16psi easily 400+ HP at that boost, smoked up the 275s stomping it at 80ks it then lost crank sync made a horrible sound and stalled. Restarted and sounded like hammers in a clothes dryer. 

My guess the crank pushed forward and side loaded everything or ate into block it has 3-4mm of end float so the thrust bearings fucked out years ago. 

Its had a ticking lifter at idle for a few weeks its possible it's that. but I'm not hopeful I've thoroughly beat snot out of it since drag day it had a great run. 

[Muncie]

New engines getting some ARP head studs gaskets and another sump with a bigger drain so I can tee the catch can in to it. 

Might squirt some paint on too. 

Bought all the stuff 4 years ago it's just been on shelf waiting for this to die. 

[Muncie]

Have ordered gaskets and ARP head studs from Mace engineering so will get this thing set up and ready to drop in ASAP. 

I've got a set of spare pair of Ecotec heads that look good but think I'll give them a valve grind and new stem seals. I'd like to give them a tickle in the ports remove some casting marks and reduce the protrusion around the the valve stem. 

Exciting times but it's been 20 years since I've swapped a car engine and not one with so much ancillary shit sure I'll be fine as long as my garage roof doesn't fall down. 

 

[RUNAMUCK]

A valve grind, 

Or a valve lap?

If you're lapping them, only use the fine paste, and don't lap more than you absolutely have to.

The coarse paste can cut quite a bit of material out. While the engine will run okay, if the valves are sunk, they don't flow as well. 

My neighbour rebuilt the 3.8 moo machine in his VN Commy. It desperately needed a valve job. He lapped the fuck out of them. It ran okay, but they were sunk as fuck.

[Dudley]

How downhill was the slope at this air field?

[Muncie]

Started preparing the deck surfaces for new gaskets good scrape with a blade then a thorough rub down with 600 grit on hard foam block shows machining is pretty course. The dowls took 2 hours to get out what a pig of an idea.

Anyway looks like Alan Millyard has been here before me with his eprinet cloth as there are some swirly sanding marks its coming out easy enough think ill just keep going till everything is uniform.

All looking good oils a bit black so will flush it all out while it's open no nasty surprises so far.

 

[Muncie]

Spent a while playing with CHATGPT getting it to hunt down information for me....

It understands Tunerpro! so ive fed it everything i have and its building me .bin file.

I can then compare against a stock file and see if its utter bullshit or on track.

It's been thinking a while.

[tortron]

2 minutes ago, Muncie said:

Spent a while playing with CHATGPT getting it to hunt down information for me....

It understands Tunerpro! so ive fed it everything i have and its building me .bin file.

I can then compare against a stock file and see if its utter bullshit or on track.

It's been thinking a while.

try notebook llm, you can get it to only take the info you need, get it to scrape the entire tuner pro site sort of thing. I have NEVER had any numbers and sizes or part numbers of things come out correctly in chatgpt, ask it tomorrow and it will give you a different answer,  sometimes even in the same convo the answer changes

[Muncie]

It's still thinking 🤔

[Roman]

I asked ChatGPT for a list of engines that have a 77mm bore. 
It's answer back was something like:

-2JZGTE
-4G63
-3SGTE 
-B18C

and a bunch of other stuff that definitely does not have a 77mm bore. 
If I replied saying "Hey those motors dont have 77mm bore" 
it goes "Oh yeah! Sorry about that"
and then you ask the exact same question again, and gives you the exact same list back.
There's absolutely no way I'm trusting it to build an ignition timing table. Haha

I could see it being pretty amazing for decoding tables in Winols or something though.