Yowzer

I actually enjoy fucking with carbs from time to time, but I find it's often a pain in the arse trying to diagnose issues with them coz my shop no longer has any of the old-school equipment and none of my resources have the technical info on them. Tbh 80s-90s EFI is worse.

Just gotta post some dyno graphs that he can't beat then

Anyone who says a well tuned carb is just as efficient as EFI needs to drag their arse out of the 90s

Not a fan of something "so basic and so old" Swaps out for carburettors. Lol Just put triples on the 5MG you dork

Find yourself some R12 to R134 adaptors, they're cheap enough. They'll have valves in them, you then remove the ones in the current ports. You can also get newer top plates as those compressors carried on for quite some time, but you'll have to do some digging to find the right one. The valve itself is probably the exact same as a tyre valve

That top one on the plastic pipe behind the fan, I have a spare clip on cap I can send you. The other one is on the radiator pipe going into the thermostat, that needs (I think) a 19mm cap. I'll grab photos tomorrow when I go visit my car. Yup BMW loves their overly complicated network of pipes

If it has swirl flaps, get rid of them, but I think you have the flapless version already which makes it easier. The intake manifold collects a fair bit of crud so pays to pull that off and clean it all out too. With the EGR gone it shouldn't build up again. The viscose fan hub is probably flogged out too, my preference is to ditch it and fit a good electric fan. Oh and blank off the EGR coolant ports rather than looping them, coz all that does is create a thermostat bypass haha.

Some say the 5M is what magic is made of

https://www.ecstuning.com/b-rein-parts/aluminum-coolant-flange-chu0939/11127806196~ren/ Get that, coz the plastic one currently on the engine will explode. There's other options out there too that take normal hose clamps rather than the BMW clips that will be more suitable for your car

There's the good story about some guy trying to prove that LPG in a car AC system was perfectly safe by letting the lpg leak into the cabin and igniting it and blowing up the car and injuring everyone watching. But yeah if it isn't leaking into the cabin and you're not ignoring the pungent odor of lpg and lighting a dart it's pretty not dangerous.

Any idea what gas they put in it? If it's heat pump stuff it's probably not R134a, right?

If you wanna do it properly, you'll wanna flush out all the components, replace all the o'rings, replace the TX valve, replace the receiver/dryer, probably replace the compressor too. The old seals from the 80s often don't like PAG oil. If you wanna half-ass it like I did, just shove some guestimation quantity of refrigerant in there and hope for the best.

It'll very likely be R12, especially if it has threaded service ports. I've regassed R12 systems with R134a on my own cars. Doesn't work as great, but it still works. Of course if all your gas has fallen out you'll wanna find and fix the leak coz refrigerant is horrifically expensive now.

Check out the jap exhausts they stick on 350Zs and try replicate that. We used to get one in at work and it sounded mental Obviously you'd have to go a different layout to make it fit, but some wacky crossover pipes swapping between mufflers seems to be the go