20v Na Engines

[Albie S2]

Hi

are all 20v 5cyl engines called 7a engines???????

thks

[mcandmar]

There was also a 2 litre version called the NM, 7A is the 2.3 litre 20v. ...yes basically.

[4WheelDrifter]

NM, 7A, 3B, ABY, AAN and ADU are all 5 cylinder 20V engines.

[4WheelDrifter]

Has anyone actually seen an NM engine? Did we get them in the UK?

[Keith]

Hello :

some 10V non turbo engines :

KV : 2.2 liter 136 ps
NG : 2.3 liter 136 ps

Some 20V non turbo engines :

NM : 2.0 liter 160 ps (replaced by 7A 'cos of not enough torque)
7A : 2.3 liter 170 ps

Some 20V Turbo engines :
3B : 2.2 liter (semi-electronic ignition) 5 speed (S2 coupé 89-mid 93 4500 cars) 220 ps
ABY : 2.2 liter (electronic ignition) 6 speed (S2 coupé 1500 cars/limo-300 cars/avant-1800 cars) (mid93-96) 230 ps
ADU : 2.2 liter (porsche improvement) 6 speed (RS2 Avant 2200 cars /limo -only 3)
AAN : 2.2 liter (audi 100 S4) 5 or 6 speed (free option) 230 ps
1B : 2.2 liter (semi-electronic ignition) Audi 200 turbo 20V

there are even some more....

[Keith]

Has anyone actually seen an NM engine? Did we get them in the UK?

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)

[mcandmar]

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.

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.

[4WheelDrifter]

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)

Thanks. That would add up with what I had heard somewhere too.

How could I miss the RR? Well I had a hard day yesterday, and I missed the 'NA' in the title anyway.
I didn't know a 1B was a 20V.

[spink]

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

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

[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

[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).

[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.

[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

[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.

[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.