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Info on the B204GT/FT engine

i'll take a volvo B2xx conrod, cut it in half, polish the surface, etch the surface and see what it is for real under the mic... :-P

I can't imagine that Volvo didn't use the normal drop-forging for their conrods. heck, for years they made conrods and other critical engine components for a lot of other (industrial) companies as well. Powder-forming/forging wasn't that common 25 years ago. cast conrods anyone?
 
I've added the scans of the press article, can anyone tell me exactly in which countries these engines were available?
I know a few (already in article), anyone else knows more?
 
Very nice scans. Unfortunately I can't help you here.
All I can say is that Bulgaria was not in the target market :)

And since this thread is for B204GT/FT engine, and the TCU unit is very specific to only
this engine, I can add one more fact to someone interested - the TCU unit runs a
Motorola MC68HC05B microcontroller - when I have some more free time soon, I will
try to provide dump of the code inside - if it have Motorola debug routines inside, which I think it is. The microcontroller is mask-programmed, so it is not possible to reprogram it, but I think it would be quite easy to dissasemble it's code since it is small enough - ~5K of code. Knowing how the code internally works will help to abuse the unit, so that the boost pressure will be raised "legally".
 
VOLVO 0 280 000 950 ECU LH2.4 Set


------------------------------
Tables
------------------------------

Main Fuel map

......RPM
.....6240 5600 4960 4640 4220 3960 3420 2940 2480 2160 1980 1860 1620 1200 1000 400

Load
128 157 217 204 212 172 155 111 94 89 83 78 68 47 52 48 48
120 157 217 204 212 172 155 111 94 89 83 78 68 47 52 48 48
112 157 217 184 178 172 155 111 94 89 83 78 68 47 52 48 48
104 157 210 160 161 150 117 103 94 89 83 78 68 47 52 48 48
96...157.163.141.132.126..98...86 88 85 83 78 68 47 52 48 48
88...125 133 118 ..86 .95 ..91 .95 90 87 83 78 68 47 52 48 48
80...101 115 ..92 ..92 .94 ..94 .88 82 81 83 78 68 47 52 48 48
72....78 ..83 ..92 ..89 .91 ..88 .83 81 87 87 78 68 47 52 48 48
64....81 ..84.. 89 ..86 .85 ..83 .83 82 81 79 72 68 67 52 48 48
56....79 ..88 ..82 ..83 .83 ..82 .78 86 73 68 73 68 67 67 58 58
48....78 ..79 ..68 ..76 .76 ..72 .67 73 61 65 60 60 58 52 54 54
40....76 ..68 ..68 ..68 .80 ..68 .68 61 61 56 65 60 59 49 46 46
32....69 ..64 ..75 ..69 .78 ..69 .61 68 66 61 58 63 52 52 48 48
24....68 ..71 ..72 ..69 .69 ..68 .65 65 60 63 60 56 56 57 57 57
16....40 ..56 ..61 ..49 .58 ..55 .46 56 56 45 58 45 42 55 60 60
08....00 ..37 ..04 ..19 .01 ..23 .23 07 29 22 27 26 37 25 25 25
 
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Yeah, I'm currently using the 578 and a few weeks ago I tried the 950. That was crap:-P

AFR's were +/- 10 on idle and low 14's on cruising (E85 and didn't bother to change resistor in AMM wire). Apart from these issues which we will resolve with some mapping, the car felt quicker, snappier..

In theory the 578 should run more rich since the doesn't have a catalytic converter, but I can't compare it now. 578 Runs just fine now

Edit: @ipdown, copied your post in the first post, thanks! We'll look into the 597 see what's that all about
 
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Here are the main 16x16 fuel tables for different B204 GT/FT revisions. What I understand from digging info about LH 2.4 is that the values in the tables are corrections - the ECU calculates needed fuel based on lambda/rpm/AMM signals and then looks into this table and adds or subtracts some fuel (injection time actually).

Bellow the buttons, in the dark-red bar is ECU revision and engine.
Button Hexadecimal/Decimal changes digit representation mode. In hexadecimal values are byte wide, unsigned only. In decimal values can be unsigned or signed, depends on the Signed/Unsigned button.


<div><script type="text/javascript" src="http://linuxfan.org/~ipdown/mybrick/lh24/volvo/map.js"></script><center><button style="width:95px;" id="ipdown_hex_1" onclick="ipdown_toggle_dec_hex(0);">N/A</button><button style="width:95px;" id="ipdown_signed_1" onclick="ipdown_toggle_sign_unsign(0);">N/A</button><button style="width:95px;" id="ipdown_color_1" onclick="ipdown_toggle_color(0);">N/A</button><div id="ipdown_map_950"></div><br><button style="width:95px;" id="ipdown_hex_2" onclick="ipdown_toggle_dec_hex(1);">N/A</button><button style="width:95px;" id="ipdown_signed_2" onclick="ipdown_toggle_sign_unsign(1);">N/A</button><button style="width:95px;" id="ipdown_color_2" onclick="ipdown_toggle_color(1);">N/A</button><div id="ipdown_map_597"></div><br><button style="width:95px;" id="ipdown_hex_3" onclick="ipdown_toggle_dec_hex(2);">N/A</button><button style="width:95px;" id="ipdown_signed_3" onclick="ipdown_toggle_sign_unsign(2);">N/A</button><button style="width:95px;" id="ipdown_color_3" onclick="ipdown_toggle_color(2);">N/A</button><div id="ipdown_map_578"></div><br></center><script type="text/javascript">ipdown_jsmain();</script></div>
 
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Hi,

just for information, the 0280 000 950 is a LH 2.4.2 ECU. The B204FT was sold in Germany in the 960's up to 1994. I'm currently looking for a complete components set ECU/EZK/TCU for my B230FT to get down the consumption of my E85 engine, but this parts are really rare.

Regards, Dirk
 
stoni said:
Hi,

just for information, the 0280 000 950 is a LH 2.4.2 ECU. The B204FT was sold in Germany in the 960's up to 1994. I'm currently looking for a complete components set ECU/EZK/TCU for my B230FT to get down the consumption of my E85 engine, but this parts are really rare.

Regards, Dirk
Click to expand...

Yes, I firstly thought it is 2.4.4 because of ascii string in it, but later read in some Volvo documents it is 2.4.2. I am sure hardware difference is small between late 2.4.2 and 2.4.4
Btw 0 280 000 932 ECU from '95 940 B200FT is the same PCB as 0 280 000 950, the only difference is that 932 have CA3272 power driver (on 950 there are unpopulated pads), probably for controlling e-fan and A/C, while this functionality in B204FT is in TCU unit.
Also 932 ECU with 950 firmware works perfectly.
 
DNAsEqUeNcE said:
megasquirt3
Click to expand...

what does this have to do with this engine? Just because many people have ditched LH because they cant get it to work semi OK doesn't mean noone else can. Anyone remotely interested in getting somewhere with it would have followed the links to ecuproject that have been posted numerous times and would have seen what is possible with it if you have a little patience.

I am not saying MS is bad or anything, some people just don't need it for what they want ;-)
 
TiagusClub said:
Whats the best hardware for the B204ft the 2.4.2 or 2.4.4?
Click to expand...

The latest B204FT ecu is LH 2.4.2. There is no 2.4.4 for this engine.
Altough I have seen two 2.4.4 ecus -932 and -962, their PCBs are absolutely the same,
only difference is lack of power driver for E-fan and A/C relay on B204FT, but that's because
Volvo decided to put this functionality in the TCU. The software structurally is
almost the same too. For long time I thought -950 is 2.4.4. The greenbook says it is 2.4.2.
Newer should be better, altough some maps from 597/578 looks more promising, but this is just software, it can be remapped.
 
It may take you hours to download, but I found blarfs site, and it has parts of the b230/b200 greenbook There are 11 pages of 85. These sections are included:
20 General Engine
21 Engine and Engine Mounts
22 Lubricating System

There are some interesting anomalys like the clearance on the lower compression and oil scraper rings are closer on the b200.
example page:
p005sized.png



https://blarf.homeip.net/greenbook/TP30871_1

There are quite a few manuals on here that are not on k-jet for the 7xx and 9xx crowd.

I am in the process of downloading all of them I am thinking of hosting them on a faster site, along with all the other pdfs i have collected. Anyone have a good free document hosting service? Im not a fan of scribd, I dont like the interface.
 
so, after running 1200cc injectors in my b230+16v+t thing on lh 2.4 for a while now, and also dyno tuning with a 937 bin and lambda disabled,

I can say that megasquirt is still a better option. it might be slightly?(maybe) harder to tune, but i feel it's worth it.

You can still lean cruise, waste spark, and all that cool stuff, but I am about to megasquirt my car, and I would actually find it to be more reliable. even with lambda disabled, LH still does funky unexplainable things.

hope all's well.

B
 
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Does anyone have repair manual for the these engines...

I would need to get copy of the pages that contain information on the power of the engine...
 
what do you need? a chart? pure max stats?...
(i don't have a manual, but i can scan my belgian conformity test where it states how much kw it makes)

why do you need it?
 
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