C stekker Renix

hi punkazz,

The volvo300club is a fantastic resource of very knowledgable people and lots of information. But, I appreciate it is a Dutch forum.

I dont mind moving the discussion back to www.volvo300mania.com/forum-uk/viewtopic...244&p=105422#p105422 if people want to continue there in English.

Seems some extra information which has come to light means the Renix thing is more complicated!

Shimon

PS Volvo BV's archives have now all been moved to Sweden? I know the prototypes from the basement moved in 2007.

We used to have an English section, but is was very quiet and so the threads were moved to the corresponding technical subforums.

we're glad to have discussions in any language as long as it is on topic in the section where it is posted. This thread definately has added value so its totally OK to keep discussing here.

The drawings that are referenced to with numbers on the RENIX module list are very interesting indeed, however up to now I haven't been able to find any of them.

hi

I'll try to upload some scans of some data I've got for discussion here.

The Volvo BV archives should now be centrally located at Volvo Sweden. I'm sure volvo300club has some excellent contacts at Volvo (re 340 estate and cabriolet on display from Volvo BV HQ store!). I've also got a friend with some good contacts at Volvo HQ. I'll see if he can get us somewhere with accessing the archives.

S

just checking this works, got some other scans to upload

shimon340;118340 schreef : just checking this works, got some other scans to upload

:y: I'd sure like a copy of that service manual, if it's not to much to ask

1986 UK owners manual

and...

1989 owners manual

Hi

here are some questions! Not pretending to know all about this. Keen to discuss and learn!

B14 4E(D) is the catalyser model? If so, the comment of LLF on page 3 seems to be a typo. Should be LFF ie unleaded fuel only.

1989 owners manual lists the B14 4E(D) as unleaded only. Therefore makes sense it?s the catalyser model as lead poisons/deactivates catalytic converters.

RON octane number of 87 doesn?t make sense. It would if this was meant to be MON 87 as that = 96 RON.

?..But, the entry for the B14 4O is 91 (which from owners manual matches as is 91 RON)

A few typos by Volvo or can anyone clarify?

In 1987 model year (need to check earlier books too), the B172 is advised to use 98 octane? Interesting. Thought that was 95 octane from the launch in 1985? In 1989, the B172 is listed as RON 96 minimum on leaded and RON 95 on unleaded. Should be the same RON rating on leaded as unleaded. Lead is controlling the octane rating here. Unless there?s some combustion mechanism which explains this. Was lower than 96 RON leaded just simply not available in 1989?

B172 KD is the catalyser version.

B14 4O is the low compression version Wouter mentioned above. Can run down to 91 octane.

The minimum octane for earlier cars is 96 RON. Given the info from Mac in the UK (both the 402 and 412 can have the ignition retarded 4 degrees by earthing pin 7 ? this gives the more advanced map for 98 octane and 2 deg retarded map for 95 octane).

Its my feeling the original more advanced map (so far called the 98 octane map) actually has its limits at 96 RON. One is safe at 98 octane but the ignition map limit is actually 98 octane so some safety built in.

By retarding the ignition 3 degrees, Volvo says ?ok to run on 95 octane?. In reality, this map is actually good / retarded enough for less than 95 octane so some safety margin built in by Volvo?

Based on page 13 of the green book, all the Renix number assembled in the table on volvo300mania, Mac?s info etc all match up (no surprises there!). Only question is Mac?s article says 4 degree retard. The last version of the green book here (TP 35752/1) says 3 degrees but maybe it was 4 degrees before in the earlier books?

Biggest question for me is this?..why do the CVTs have more advanced timing than the manuals???

Would have though the ignition maps for CVT and manual would be the same.

Ideas most welcome!!!

Indeed, given the info in the green book, Volvodspec/Avdakkar can run a CVT B14 4E with a 402 Renix with no earthing to the pin 7 of the C plug on 95 octane. The CVT runs a more advanced map (plugging in plug C makes a 0 deg change to the map so its running the original 6 deg BTDC map). But, this should have caused problems for a manual version of this car it seems on RON 95.

Plug C on the CVTs didn?t have a earth connection for pin 7 it seems? In order to keep them on the more advanced map? Can anyone with a 402 or 412 CVT check this?

A catalyser 1991 model I?ve looked at (manual) has a connection on pins 6,7 and 8. Wonder what pin 8 does on a 412A?
Difference between a 402 and 412 seems to be the 412 has a wider tolerance on its ignition timing ability?

402 with change up indicator don?t have a map amendment via the C plug, but versions without the change up indicator (B14 4S) do have the retard map option via the C plug. According to info from the UK from Mac, Volvo UK imported both 402 with change up indicator (one year only) and also 402 without (the one which can run a retarded map too). Does this mean a 402 with change up indicator can only run 98 octane??

hello

anyone know why the AT (CVT?) and the MT have different maps?

CVT's have a different ignition map to the manual? Seems curious....