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Old 07-20-2020, 12:53 PM   #76
IansPlatinum
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Originally Posted by volvowagoon View Post
OH ****!

I did not see that coming! If you really want to do the engine bay correctly, this is certainly the best way. What transmission are you considering?
It's a AW71 from roy (2manyturbos). Stronger than the AW70, and from cool weather PNW so less likely to be burnt up from heat.

I'll be installing a new filter, seals, TC seal, and kickdown cable on it.

Driveshaft is getting a new position #1 U-joint (it's partially seized), and new STS carrier bearing.

Engine is getting a new harness from Dave Barton, and STS stainless coolant pipe + silicone heater hoses, CPS, block paint, and possibly relocation of alternator with 940 accessory brackets (alternator on top driver side, compressor in normal spot, PS pump on passenger side). Also non-EGR manifolds

Also redoing AC system. Parallel flow condenser, new compressor (not sure if I'm going with nissens or sanden yet), custom hoses.

Playing with idea of stainless exhaust, but it's not an immediate need.

Beefed up #2 & #0 AWG battery harnesses.

Kinda want to convert to 940 coolant reservoir.

There's a LOT that I've been wanting to do, and now I have the time to do it. A bunch of the things would have been a PITA to do individually, but now with the engine & transmission out, I can do them all easily.

Also a big reason for this was definitely the transmission, and the fiancee won't let me drop the transmission from underneath the car. Mainly because I had a car fall on me when I was 16 I've learned a lot since then. Can't put a price on safety.

So the under-car activities I'm allowed to do are limited, and when I do them I triple check my vehicle support method
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Old 07-20-2020, 01:25 PM   #77
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Lots of excellent ideas here. I need to connect you with a local Dallasite who converted to R134 with the sanden compressor and reused his original condenser after stripping it with an industrial AC cleaner. His puts out some insanely cool AC on an 87 244 with 400K+ miles even in our 100 degree heat.

Always a good idea to pull it out from above, absolutely can't put a price on safety. Let me tell you bench pressing the AW70 down out of there was an absolute pain and I wouldn't wanna do that again.
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Old 07-20-2020, 01:34 PM   #78
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Lots of excellent ideas here. I need to connect you with a local Dallasite who converted to R134 with the sanden compressor and reused his original condenser after stripping it with an industrial AC cleaner. His puts out some insanely cool AC on an 87 244 with 400K+ miles even in our 100 degree heat.

Always a good idea to pull it out from above, absolutely can't put a price on safety. Let me tell you bench pressing the AW70 down out of there was an absolute pain and I wouldn't wanna do that again.
I'm thinking about continuing to use envirosafe (same as duracool) as the refrigerant.

I really enjoyed being able to just let the refrigerant vent (it's just propane/butane, very little environmental impact) without having to pay a tech to recover it. Makes working on the system easier if I ever have to crack it open again. Can't do that with 134a without giving the kangaroos skin cancer.

As much as I'd like to keep the OE Volvo fin & tube condenser , it just is no match from an engineering standpoint to the parallel flow. I redid the AC system in my 850, and now it's unbearably cold. It's pretty hilarious when its 100F outside and people ask me to turn down the AC.

And agreed with the AW70. It's already a pain working on the floor. Combined with haggling with a transmission, no bueno. Plus I would not have been able to do the other things I needed to do.
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Old 07-20-2020, 02:05 PM   #79
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Is envirosafe made to be compatible with R12 or R134 systems? What's the molecule size compared to traditional refrigerants? I completely agree on being able to vent it freely though, always a pain to have to involve a shop for these types of things. I've heard that the only real downside to the parallel flow condensers is that once they clog, they're pretty much ruined and unflushable due to the smaller passages.

The M46 wasn't terrible to press back in as it was much lighter, but man, what a pain to get it lined up with the trans tunnel in the way along with getting the input shaft lined up while rotating and then to thread in bolts.
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Old 07-20-2020, 02:55 PM   #80
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Is envirosafe made to be compatible with R12 or R134 systems? What's the molecule size compared to traditional refrigerants?
Yep, & much smaller. Propane/butane blend, about 75%/25%. I guess the main concern is flammability, but there's not a whole lot of mass in the system, and I've also read that even though r134a isn't flammable, aerosolized PAG oil is. PLUS, it's insane how hard it is sometimes to ignite a jet of propane. Try taking a propane torch and holding a small flame to it or getting spark near the stream. The propane puts out the fire unless you do a spark at the base of the jet. I also keep a halotron fire extinguisher in the car.

If I get 5-10 years out of my condenser, I'll be fine with that. My parallel flow condenser in my 850 is original, so 25 years old. Never been flushed. And the 850 is uncomfortably cold. No tinting on the windows either

The universal ones aren't that expensive either.

https://coldhose.com/parallel-flow-c...condenser.html
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Old 07-25-2020, 01:18 AM   #81
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Old 07-25-2020, 01:36 AM   #82
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Decided to drain the trans fluid from the old trans. Chocolate brown. I had done a 12 qt flush only a year ago. Definitely on its last legs, as this fluid should still be red.



Donor trans from roy looked nice on the inside. I installed a new filter and pan gasket. I was going to change the kickdown cable to a NOS one but it actually looks really good.



I also cleaned up the outside. Not sure if I want to spray it with some engine clear or not.

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Old 07-25-2020, 02:43 AM   #83
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Nice goin, you also do accumulator mod?
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Old 07-25-2020, 09:23 AM   #84
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Nice goin, you also do accumulator mod?
Nah, community said I shouldn't need to because I'm staying NA.
Plus I don't want to mess up the comfy ride
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Old 07-26-2020, 05:05 PM   #85
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AW71 is already plenty of beef for an NA. I wouldn't sacrifice the smooth shifts either. Nice work!
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Old 07-30-2020, 09:11 PM   #86
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EDIT:

I'm just gonna draw it out.



Green are components I'm keeping stock.

Last edited by IansPlatinum; 07-31-2020 at 12:23 AM..
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