Volvo Community Forum. The Forums of the Volvo Owners Club

Forum Rules Volvo Owners Club About VOC Volvo Gallery Links Volvo History Volvo Press
Go Back   Volvo Owners Club Forum > "Technical Topics" > Performance Volvo Cars
Register Members CarsBlogs Help Calendar Mark Forums Read


Performance Volvo Cars A forum for those interested in any Volvo performance car from any era, FWD, RWD and AWD!

  • VOC Members: There is no login facility using your VOC membership number or the details from page 3 of the club magazine. You need to register in the normal way
  • AOL Customers: Make sure you check the 'Remember me' check box otherwise the AOL system may log you out during the session. This is a known issue with AOL.
  • AOL, Yahoo and users. Forum owners such as us are finding that AOL, Yahoo and are blocking a lot of email generated from forums. This may mean your registration activation and other emails will not get to you, or they may appear in your spam mailbox

Thread Informations

AW-70L Manual Shifting

Views : 431

Replies : 0

Users Viewing This Thread :  

Thread Tools Display Modes
Old Oct 8th, 2018, 17:08   #1
New Member

Last Online: Oct 8th, 2018 17:11
Join Date: Oct 2015
Location: London
Default AW-70L Manual Shifting

Good day.

Been some time since posting, and had what could be considered a "performance oriented" question for the community.

I have the possibility of laying hands on an immaculate 1990 740 which has the stock AW-70L (Toyota A42DL?) transmission. By the specs, this transmission unit features completely hydraulic shift actuation, with the exception of an overdrive solenoid for 3>4 transition.

I am one of those curious folk who appreciates "walking" my automatics through the gears manually; directly removing all load from the clutches on each upshift. There's a little dance with the stick, throttle, and winter switch which I use on our 95 960 to achieve this; and the results are quite good: Less wear, lower temps, better power control across the board. I can also selectively skip granny and just lock in 2nd for less hassle in slow traffic.

The 70L would seem to be a bit of a challenge with regard to any such usages as traditionally implemented. However, I could adapt well enough if there is a modification which might be known to allow for simple, exclusive manual shifting of this unit. All automatic gear-change functionality (apart from converter lock-up) could be eliminated to achieve this end: I wouldn't miss it one bit.

As a "quick fix" I have considered disconnecting the kick-down cable and locking it into a "closed throttle" position to allow better overriding manual control of upshift points. However, I have some concern about also reducing final lockup pressure on the clutch packs by doing this, resulting in slippage after final engagement. I might be wrong here, perhaps someone could shed some light on this type of scenario, too.

In sum, I would appreciate knowing:
  • if there is a throttle body (or other) modification which will allow permanent, selective manual upshifting of the AW-70L; and
  • if running this transmission with the kickdown cable permanently slackened simply changes shift points and "softens" the shift transitions, or if it will also cause a reduction in hydraulic pressure on the clutch packs when fully engaged.
Thank you so much.
disPlacedx6 is offline   Reply With Quote

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump

All times are GMT +1. The time now is 23:58.

Powered by vBulletin
Copyright ©2000 - 2019, Jelsoft Enterprises Ltd.