Volvo RWD 200 Forum

INDEX FOR 1/2026(CURRENT) INDEX FOR 10/2008 200 INDEX

[<<]  [>>]


 VIEW    REPLY TO THIS MESSAGE    PRINT   SAVE 

240Ti problem - need description of 740 turbo ignition system 200 1984

posted by  vandor on  Fri Aug 30 15:21 CST 2002
Author: [PROFILE] [EVERY POST] [THREADS] [BEST POSTS] RSS Feed     [IGNORE ALL POSTS]
last visit: Tue Sep 11 08:07 CST 2001
[RELATED]

Hello,

I have a 240 turbo with a B23FT (9:1 CR) that uses the stock 240 head, FI, and ignition.
The problem is that I can only run 8 psi of boost. If I use 10.5 psi the engine starts to spark knock badly. I know that it is not lean, have checked it with an A/F meter, also did the terminal 11 trick, which had no effect on the problem.
I also retarded the base timing from 12 degrees to 8, which also had no effect.

I think I need an ignition system with a knock sensor, as the stock boost retard is not enough.

The cheapest and easiest way would be to install one from a 740 turbo, but I want to know how that system works and how much it can retard timing before I buy/install one. A wiring diagram would also be a plus.

Does anyone have this info, or any other suggestions on how to solve the problem?
Thanks,

Csaba
'84 245Ti, B23FT, M46





THREADED THREADED EXPANDED FLAT PRINT ALL
MESSAGES IN THIS THREAD

New 240Ti problem - need description of 740 turbo ignition system [200][1984]
posted by  vandor  on Fri Aug 30 15:21 CST 2002 >


<< < > >>



©Jarrod Stenberg 1997-2022. All material except where indicated.


All participants agree to these terms.

Brickboard.com is not affiliated with nor sponsored by AB Volvo, Volvo Car Corporation, Volvo Cars of North America, Inc. or Ford Motor Company. Brickboard.com is a Volvo owner/enthusiast site, similar to a club, and does not intend to pose as an official Volvo site. The official Volvo site can be found here.