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AW71; Turbo VS Non-turbo? Difference?

VolvoGuy123

VolvoGuy123

Iron Man.
Joined
Mar 17, 2016
Location
CT
Does anyone happen to 'definitively' know if an AW71 out of a non-turbo (1994 940 N/A) is the same as a 'turbo' AW71? I've searched high and low and I have gotten a few conflicting accounts. And now the salvage yard is telling me I am wrong of course. lol. :wtf::-(

*I have a 1995 940 Turbo and need a 1993-1995 AW71 transmission.


UPDATE: additional question; Did NON-turbo 940's even come with a NON-lockup AW71?
 
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Putting an AW-71L in '93 240 +T was a terrible decision. I really wish I would have used a regular '71.
 
If you can find the "R-Sport B21FT Intercooler Boost System Installation Instructions", it includes a section on modifying the non-intercooled 240 turbo AW-71 from early 1980s to better match the higher torque from the intercooler (swap accumulator springs and throttle cam plate). I don't know how this compares to the tbricks standard accumulator mod.
 
bobxyz said:
If you can find the "R-Sport B21FT Intercooler Boost System Installation Instructions", it includes a section on modifying the non-intercooled 240 turbo AW-71 from early 1980s to better match the higher torque from the intercooler (swap accumulator springs and throttle cam plate). I don't know how this compares to the tbricks standard accumulator mod.
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it doesn't actually. The (TB.com) accumulator mod is actually a stronger option than just swapping the springs/cam plate. But I don't think they would of advised sticking 'sawed off bolts' into a trans in a publication from R-sport! lol.
 
Only downfall I've heard of is low rpm building boost in certain scenarios. The lockup drops the rpm about another 300-400rpm over a non-lockup, which may put spool time down a good bit depending on application.
 
There are all sorts of threads about how terrible the lockup is behind a turbo 8v. I'm one of those people that did the swap and immediately hated it. Even with a 3.73 rear end, it was doggy and laggy at any cruising speed below 75mph (I'm in Canada and the speed limit in my province is 62mph/100kph). Try getting boost at 2000rpm with anything larger than a 13C, it sucked.

Luckily, the lockup can be deleted (Deleting lockup via valve body). My car is MUCH more fun to drive now :).
 
VolvoGuy123 said:
Did any non turbo 93-95 940's come with a non-lockup AW71?
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no, in the US only 940 turbos had the late model AW71 non lockup

VolvoGuy123 said:
Yes, inquiring minds would like to know! lol. :wtf:;-)
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some people drive slow :cough: or have large tires, or any number of other things. I never had an issue with it, but I don't have any qualms booting it and moving on either.
 
linuxman51 said:
some people drive slow :cough: or have large tires, or any number of other things. I never had an issue with it, but I don't have any qualms booting it and moving on either.
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If the speed limits in my province were higher than 60, sure, it might have been ok. I live in a rural area though, where it's rare to hit higher than 50 (the limit) when travelling from point A to point B. It was even worse at 50, trust me. 1800 rpm with 205/55 16s on Hydras and a 3.73 rear diff. The stall in the converter, being a turbo L (go Canada!), was 2500-2700-ish, which translated into lag-city with my big 16g/8cm.
 
linuxman51 said:
no, in the US only 940 turbos had the late model AW71 non lockup



some people drive slow :cough: or have large tires, or any number of other things. I never had an issue with it, but I don't have any qualms booting it and moving on either.
Click to expand...

I'm running 215/60R15's on my 88 765 T with AW71. The larger diameter (+2.5% more than stock) tires haven't caused any noticeable performance issues.
 
Broke4speed said:
If the speed limits in my province were higher than 60, sure, it might have been ok. I live in a rural area though, where it's rare to hit higher than 50 (the limit) when travelling from point A to point B. It was even worse at 50, trust me. 1800 rpm with 205/55 16s on Hydras and a 3.73 rear diff. The stall in the converter, being a turbo L (go Canada!), was 2500-2700-ish, which translated into lag-city with my big 16g/8cm.
Click to expand...

I live in a rural Indiana area. My car rarely sees faster that 60 mph. The only time i see faster is when passing, or driving on a 4 lane highway. My GPS has shown a maximum of 87 mph a few times while passing slow idiot drivers.
 
I'm thinking my biggest problem was the 71L converter (2500-2700), and the Big 16G/8cm turbo I am using. Cruising at 1800 rpm kept me so far away from the torque sweet spot that it was actually very irritating to drive.

I get better fuel economy without the lockup, and it's more fun :).
 
Broke4speed said:
I'm thinking my biggest problem was the 71L converter (2500-2700), and the Big 16G/8cm turbo I am using. Cruising at 1800 rpm kept me so far away from the torque sweet spot that it was actually very irritating to drive.

I get better fuel economy without the lockup, and it's more fun :).
Click to expand...

What is the stall (converter) speed with the (turbo) AW71?
 
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