Turbos... Anyone help?

Scorpio1 · Post by **Scorpio1** » Tue Jul 08, 2003 5:31 pm

I drove a 1.4 TDI sport today and it actually felt noticeably slower than the 1.9TDI. The thing I wondered is, is the turbo on the 1.4 and 1.9 of a different size? Because the 1.4 sounds different to the 1.9. I mean the bigger engine has a 'proper' whistle. Are they different

dub envy · Post by **dub envy** » Tue Jul 08, 2003 6:21 pm

I don't actually know, but maybe the bigger engine breathes more air, therefore making the turbo work harder and spool up quicker???

just an idea....

Scorpio1 · Post by **Scorpio1** » Tue Jul 08, 2003 7:04 pm

I really would like to know

Scorpio1 · Post by **Scorpio1** » Wed Jul 09, 2003 4:58 pm

Or a picture?

Nelson_Wilbury · Post by **Nelson_Wilbury** » Wed Jul 09, 2003 6:21 pm

The 1.4 and 1.9 turbochargers are different, the 1.9's turbocharger is part of the manifold, its also obviously bigger...

Also, for those interested the ATD (engine code) version of the 1.9 has 100bhp, the AXR 101bhp

Scorpio1 · Post by **Scorpio1** » Wed Jul 09, 2003 10:20 pm

Right... Iâ€™m going to sound very thick here

but where is the 1.4 turbo connected to then?

So I take it the 1.4 has something like a T.2 and the 1.9 a T.25?

Would like detailed info of the engines but the VW site doesn't have it and did searches to no avail

Scorpio1 · Post by **Scorpio1** » Thu Jul 31, 2003 6:58 pm

Don't suppose anyone found out did they?

The VW dealer told me the 1.9 TDI is exactly the same engine they fit in the 1.9 100BHP Golf.... Same turbo too...

leonsmith · Post by **leonsmith** » Fri Aug 01, 2003 8:35 am

Scorpio1 wrote:Don't suppose anyone found out did they?

The VW dealer told me the 1.9 TDI is exactly the same engine they fit in the 1.9 100BHP Golf.... Same turbo too...

and in the 100bhp 1.9TDi PD Bora too by all account.

Scorpio1 · Post by **Scorpio1** » Mon Aug 11, 2003 11:56 pm

Well found out a little more on a website, so I thought I'd post some info up in case any other TDI owners out there are interested.

In the newer PD TDI engines, a variable vane turbo is used.

Apparently it's just the size, boost pressure, and ECU mapping that pushes things up. They're supposed to be good for 80,000 miles + with no problems if not abused too much.
A couple of pics:

An animated picture for a better idea

des_pd_ tdi · Post by **des_pd_ tdi** » Tue Aug 12, 2003 10:05 am

I was rather hoping they'd be good for 160,000 plus.

Anyway it's almost impossible not to use the turbo, it kicks in at around 1600rpm.

Scorpio1 · Post by **Scorpio1** » Tue Aug 12, 2003 11:18 am

I just hope it gives off a nice whistle!

Bit similar to the Golf's, cutting in and out, as a pose to it being there all the time like on the small engines. Opps Iâ€™ve embarrassed myself now!

des_pd_ tdi · Post by **des_pd_ tdi** » Tue Aug 12, 2003 4:37 pm

Oh, you'll hear it alright. My special trick is driving along in third/fourth and spinning the turbo right on the power band then let it spin down and back up again, childish for a 30 year old I know.

But very satisfying.

Post by **mole** » Tue Aug 12, 2003 4:55 pm

Indeed.

Mikeyw · Post by **Mikeyw** » Tue Aug 12, 2003 5:22 pm

Grown up Kids these days!

Must try that 3/4th gear thing...