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Where does this connect? B21ft

Pietercc said:
Your car is going to have a very dirty stage 0. It seams like the previous owner did a lot to make things work. You definitely are running K-jet, but I have no clue what else has been done.
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Since last summer I have begun cleaning it up. Starting with:

In tank fuel pump
Fuel accumulator
Fuel Filter
K-Jet distributor disassembly and clean
Fuel Injectors
Timing belt
Water Pump
Spark Plugs
Belts
Air Filter
Radiator
Coolant Flush
Oil Change
Head replaced
...

The Previous Owner did a lot of work and I'm enjoying taking some time to learn what all is going on here. Thanks for the help.
 
bobxyz said:
OK, it looks like you have a later style LH intake manifold that's been adapted to K-Jet. Maybe a PO did this when they added the intercooler? The original B21 Turbos didn't have an intercooler. To add it, you need a big metal right-angle adapter on the K-Jet throttle body - see my engine bay pics.
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Bob,

Thanks for reading and giving your thoughts and guidance. I believe my car had an intercooler to start with (at least the badge on the trunk says so, but maybe it ain't original either) and the intercooler was upgraded to one from a diesel?

If I understand the LH doesn't signify a K-jet(as I was thinking), and my intake is from post K-jet?

I'll test the TPS, and get some more pictures of the turbo and such requested.

Cheers!
 
LH is the electronic fuel injection system that replaced K-Jet. The big differences being that it uses modern electro-mechanical injectors, a MAF sensor, and a LH ECU computer box, versus K-Jet's continuous mechanical fuel injectors, air plate in the fuel distributor, and just a lambda controller.
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I realized that I'd seen a writeup before on how to convert a B21FT intake manifold to a later B230 manifold. I guess this use to be a performance thing, but I'm skeptical it would be worthwhile. (On the other hand, the non-turbo B21F K-Jet intake manifold with the long runners does have much better flow characteristics.)

Years ago, turbobricks was hosted on a different software package and had a web main page plus a forums sub-page. One of the main page articles that's been lost in the upgrade was the B21FT to B230 intake manifold conversion, but it's still available via the wayback machine:

I also looked up your BMW 280120325 TPS and found a thread here saying it doesn't work for a standard LH2.4 setup. But the thread sort of implies it may be fine for your converted manifold:

lh2.4 throttle position sensor substitute

Random lucky coincidence of my day: b230f with faulty throttle position sensor in throttle closed position prohibited car from even starting... removal of throttle switch and testing confirmed the problem...part is a bosch 0280120325. removal of throttle position sensor from BMW e28 535i...
turbobricks.com turbobricks.com
 
JoeLouis said:
The turbo is from an 850 T5 R 2.3L P B5234T5 96-97 TD04HL-16T7 4918901350/01355E 1275663
The manifold is volvo part 3514275 and seems to be from a 740 or 940
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That's good! So far, it seems like the PO knew exactly what they were doing.

The manifold is referred to as a 90+ (aka 1990 and after), and has better flow than the 89- "log" manifold. The 90+ has a rounded casting for the runners, the 89- has squared-off runners.

The turbo is a mitsubishi 16T, which is good for higher boost and includes an integrated CBV (compressor bypass valve). The CBV will have a vacuum hose connecting it to the plenum chamber on the intake manifold.
 
This is what I came up with for the hose(s). I dont have anything plugged into the intake under the TPS sensor now and just plugged the two hose together that now connect the PCV box to the air intake (before the turbo)... Also, What the heck is this ? The harness has a red/ white/ and bare wire and I don't see anything that could plug into it....

Volvo_Hose2.png

Harness_Question.png
 
index.php

The connector is used with the factory Mono-Tester to set the timing.

1585-105-volvo-mono-tester-2-l.jpg
 
dl242gt said:
Hiperfauto just saved you over 60k dollars. :w00t: No one even used those at the dealers when they could just grab an accurate timing light.
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Europe uses commas instead of periods for the decimal point. only 60 euro, probably 75 bucks plus 50-80 dollar shipping to the US. Not bad for just a cool collectors piece. Terrible for a useless tool
 
What does the hose coming out of the fuel pressure controller connect to? Please and thank you. I'm looking in the Bentley manual but don't see the connection in the diagram(s) I found.

fuelPressControl.jpg
 
What is this called? Looking for more information but I don't know if it was original to the 84 B21ft. I think it's a boost enrichment switch...but can't source it.
boostvalve.jpg
 
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