97-01 1.8T internals

[A Foore]

Are the internals the same between 97 and 2001 models? Since the 2001 model has a bit more power, is that due to ECU configuration?

[EVIL-AUDI]

No they are not.

[A Foore]

Originally posted by EVIL-AUDI
No they are not.

lol....when u replied, I was editing my post....
Let me rephrase....are the internals for the 2001 model the same as pre 2001?

[voodooA4]

no...here's what I know:

97 1.8T has forged internals, the rest are cast.

something about a 99.5 makes it the best car to tune. I believe it has some engine enhancements, but is still non-dbw

2000+ are all DBW

2001 added variable valve timing (if I recall correctly)

maybe someone can add on to this...

[EVIL-AUDI]

Yeah 99.5 seems to be the best for tuning. NDBW system with 00+ looks.

[A4 in SC]

Hmmm. I was under the impression that the 98s and 99s had forged internals too. DARNNIT!!!!!! Oh well.

Good info., none-the-less.

[J_Ho1997]

no engine enhancements on the 99.5 - just the same old ndbw system but the updated looks. thats why its the preferred model.

I think that 97 1.8t's are the best because the forged internals... but I may be biased ;-)

[MKGIY]

97 rules.

Mike

[Devious27t]

Originally posted by J_Ho1997
no engine enhancements on the 99.5 - just the same old ndbw system but the updated looks. thats why its the preferred model.

I think that 97 1.8t's are the best because the forged internals... but I may be biased ;-)

97's also seem to be the most problematic as they were the first year of the 1.8t so i guess you win some you lose some there... iirc the most power ever made on a 1.8t was made on a DBW?

[DDQ]

My '97 has been problem free, less the turbo recall in '97-98 due to the faulty wastegate rod (the turbo didn't even go, but Audi replaced it anyway). I have every service record from day 1 on my car, and nothing was out of the ordinary.

I don't think Audi changed much in the 1.8T (besides cosmetically) from the 97-99.5, did they?

[nizmosx]

i love my 99.5 i never had a problem on it except for when i first got it used it had an oil leak, it cost me 150 for new gasket and all the labor and never had a problem again. (im knocking wood right now).....

[jrodmk2]

if the car has a manufacture date of 10/97 do you think it has the forged internals?

[Devious27t]

Originally posted by DDQ
My '97 has been problem free, less the turbo recall in '97-98 due to the faulty wastegate rod (the turbo didn't even go, but Audi replaced it anyway). I have every service record from day 1 on my car, and nothing was out of the ordinary.

I don't think Audi changed much in the 1.8T (besides cosmetically) from the 97-99.5, did they?

they always change little miscellaneous things behind the scenes like belt tensioners and what not.... i recall a convo on AW about all the updates from year to year and i would assume that 99.5 was the best because they ironed out most of the problems for the nDBW. they then switched to DBW because DBW can close the throttle body at first sense of knock or detonation... ndbw cannot. it was a safety mechanism. the intake manifolds are higher to cause greater charge pressure flow velocity from the use of a larger k03, the idea was to give the larger turbo the same spool speed... on turbos up to a t28 the flow velocity is greater on ATW and AWM engines which makes them better power makers up to that after that the flow of the stock manifold and head begin to max out become a restriction.

maybe i got a little OT from your question but this gives you an idea of the types of changes audi makes from year to year.

[J_Ho1997]

Originally posted by DVS18t
97's also seem to be the most problematic as they were the first year of the 1.8t so i guess you win some you lose some there... iirc the most power ever made on a 1.8t was made on a DBW?

the engines themselves aren't problematic. The major issues with the 97 1.8t's are the design of the oil line heat shielding and the wastegate rod. The engines themselves are just as (if not more) bulletproof as the later ones.

[AspenSti]

last time I checked, all B5 1.8ts had forged internals.

[bitterchild]

all this hearsay...

[A4 in SC]

Originally posted by YellowA4Turbo
last time I checked, all B5 1.8ts had forged internals.

I thought so too. I have read differently though. Anyone know for sure???

[Devious27t]

Originally posted by YellowA4Turbo
last time I checked, all B5 1.8ts had forged internals.

you checked wrong.... my MY2000 has cast internals... the only audis that have all forged through all the MYs are S4's.... A4's dont make enough power to constitute the necessity thus they were pulled. i have seen plenty of owned pistons from 98-2000 to know that they are cast.