20v Na Engines

[Knight Rider S4]

Did the 200 not have the K26 turbo and the S2 3B have the K24

[20v-quattro]

Hi everyone !My engine is NM 2.0l 20v.It is clumsy until reach 3500rpm.The car is 90 quattro(sedan ) without catalytic converter,there is no lambda probe too.

[20vQC]

OK... I'm late but I'm here LOL Let's see... MIne is a 90' Coupe Quattro NM 2.0L 20V N\A. It really does NOT have torque, the car is a lot heavy for an engine like that... the only thing I like is that above 4500rpm you feel when the torque starts otherwise to reach that rpm you need a little of patience.... starting from zero is a sh#t... after 3rd gear at more than 4600rpm the car begins to go "fast". I've modified my ecu chip to get a little more torque in the bottom end rpms and to get a little more gas through the bigger injectors I have ... always keeping (aprox) the 14.7:1 air\fuel ratio, car's is better but still having a 2.0 litre engine torque. I hope to get and install the 3B soon and forget the torque problem I have.

And like VenetoRS2 said... before the taxes problem was with the displacement...now is with the power... unless you are not saying to the people you have another bigger or turboed engine.

[zuru]

Q for the NM owners here, do your cars have catalytic converters?

Thanks, Mark.

Mark, there is no catalytic converter in those cars. There is a little box in exchaust similar to cat box, but it has just a pipe inside
Also there is no lambda probe and charcoal canister system.

[Mr.Crossfire]

I'm not 100% sure, because I haven't been under the car yet, but there are no markings about the cat in the registration documents, and etka suggests that there is no lambda probe -> no cat.

[mcandmar]

Q for the NM owners here, do your cars have catalytic converters?

Thanks, Mark.

[porkkis]

You can get it remapped. B2Q gear boxes can take what ever you can produce. They are durable, very durable.

I actually don't know all the differences between 200 and S2 software but there are some. I probably could find out but it's quite time consuming and I'd say meaningless.
200 boost a bit more (about 0.05 bar or so).

Breather hoses are different. Don't know flywheel mass differences but probably they are a bit different. The main difference is that needle bearing is in the crank in 200's and in FW in S2's.
200 has 016 series GB as does B2Q and therefore 2003B FW is the right choise with typ81/85 cars.

Weak oil pans.. errm. No.

[zuru]

In fact, NM is not a crap, but it develops too low torque at the bottom, so some day I'll swap a 3B in my coupe or prepare my NM for low boost
Porkkis would you be so kind and explain the differences in 3B engines a little bit more detailed ?

Are you able to describe differences in ECU software for both cars ? I'm using stock 200 soft in my b2q currently, so I need to know what would be the difference comapring to stock S2 software. For now I don't want to remap of the ECU because I don't know how much torque the 90quattro gearbox is able to handle.

-Flywheel: is the wheel lightened in S2 comparing to 3B200 ? What is the difference ?
-Breather ??
-Oil pan if S2 with A/C: I heard that 3B has weak oil pans, is it true ? Should I upgrade it ?

[Mr.Crossfire]

I have an 90 sedan with NM engine. One of the few in Finland. The engine has absolutely no torque at all. Makes some power between 4200-7000
Here's the identification sticker.

[porkkis]

I've got NM engine in coupe quattro, so if you need to know something I will try to help you
3B in 200 20V is exactly the same engine like in S2, ECU is probably mapped different due to different characteristics of the car. I've got 3B taken from 200 20V installed in my Type 85 90 quattro.

Actually no they are not. 3B200 and RR are closer to each other.
Few 3B S2 and 200 differences:
-Flywheel
-Breather
-Oil pan if S2 with A/C
-Boost pipe by cam cover
-ECU SW slightly different

NM engined cars were also imported to Finland but not too many.

[veneto rs2]

I forgot something, initially the NM was buit for the Italian requirements :

all engines above 2 liter were (and still ???) overtaxed that's why they built a 1994 cm3.


They were found on Coupé & limo T89 audi 90


Coupé 20V 2.0E 1989 1994 cc/160 ch 339 cars
Coupé 20V 2.0E quattro 1989 1994 cc/160 ch 1 470 cars
90 20V quattro 1989-1991 1994cc/160 ch 1 589 cars (Italy)

Not anymore overtaxed above two liters..........it was based on a different percentage in VAT 38% instead of 19% over two liters
road tax nowadays goes on kilowatts the more you have the more you pay
not enough if you own a euro0/euro1/euro2/euro3 tou pay even more accordingly

The 2 liters 20 valves for the italian market was IMHO........ crap!

my RS2 road tax this year it's 983,42 euros

Stefano

[zuru]

I've got NM engine in coupe quattro, so if you need to know something I will try to help you
3B in 200 20V is exactly the same engine like in S2, ECU is probably mapped different due to different characteristics of the car. I've got 3B taken from 200 20V installed in my Type 85 90 quattro.

[Keith]

your right Stu a 1B is an old 10v.

Right !!!!!
My mistake

th 1B is a 10V turbo 200 HP !!!

the Audi 200 20VT engine code is 3B (quite strange as it is probably a little different in a 200 than in a S2).

[baltiboyS2]

Thats what i've read in a few places, never seen one myself but i have heard of people getting there hands on NM cams so there out there somewhere.

i know of three 2.0 five pots in my younger days in metallic blue almost like kingfisher blue
in the north of scotland

raj aby

[spink]

I didn't know a 1B was a 20V.

your right Stu a 1B is an old 10v.