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Author Topic: AAZ or 1Z/AHU ??  (Read 5754 times)

November 26, 2006, 04:33:17 am

stewardc

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AAZ or 1Z/AHU ??
« on: November 26, 2006, 04:33:17 am »
Hi, all. I presently have a 1.6 TD in my Caddy and the bottom end is slightly farugelahed, so I need to upgrade to a 1.9. I'm havine real problems deciding. What I'm wondering, is what are the pros/cons of an indirect injection diesel versus a direct injection diesel.  Is the IDI head with the precombustion chambers more problemous when boost is raised, etc. The truck will be mainly street driven with the occasional blast to impress the rednecks and Honduh drivers and will have a 367 bolted gear with a .71 5th and a Quaife LSD.
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Reply #1November 26, 2006, 05:31:37 am

Ziptar

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AAZ or 1Z/AHU ??
« Reply #1 on: November 26, 2006, 05:31:37 am »
Differences were discussed a little in this 1.9TD vs. TDI-M Thread

If it were me and, I had the $$$ and access to the stuff.. TDI-M with a Cummins 4BT Pump for sure.
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Reply #2November 27, 2006, 04:23:55 am

stewardc

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AAZ or 1Z/AHU ??
« Reply #2 on: November 27, 2006, 04:23:55 am »
Yeah, but there are those that claim they are a slow-revving pig. Comments ??
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Reply #3November 27, 2006, 10:02:22 am

Ziptar

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AAZ or 1Z/AHU ??
« Reply #3 on: November 27, 2006, 10:02:22 am »
Quote from: stewardc
Yeah, but there are those that claim they are a slow-revving pig. Comments ??



I have owned a 98 and an 03 TDI(Electronic) and have racked up just shy of 400K miles between the two.

One thing I can say for sure the TDI ain't....

That's a slow-revving pig..
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Reply #4November 27, 2006, 12:09:31 pm

stewardc

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AAZ or 1Z/AHU ??
« Reply #4 on: November 27, 2006, 12:09:31 pm »
I have had a 98 Beetle TDI and a 99 Jetta myself and, though they had good power, the rev limit is low.
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Reply #5November 27, 2006, 03:38:12 pm

RabbitJockey

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AAZ or 1Z/AHU ??
« Reply #5 on: November 27, 2006, 03:38:12 pm »
and if its a tdi-m, the rev limit is very different...
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01 Jetta TDI 100% stock daily
81 Rabbit:TDI-M ported head, Frank06 cam, PD intake, hybrid T3 turbo, Renault intercooler, Syl20 11mm pump, light weight fw, and yellow California Clutch clutch kit
Reply #6November 28, 2006, 03:07:30 am

stewardc

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AAZ or 1Z/AHU ??
« Reply #6 on: November 28, 2006, 03:07:30 am »
Bump...any comments on the precombustion chambers as opposed to the weird piston chambers of the TDI???
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Reply #7November 28, 2006, 08:24:53 am

hillfolk'r

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AAZ or 1Z/AHU ??
« Reply #7 on: November 28, 2006, 08:24:53 am »
i have an ahu tdi
my "slow revving pig" still cuts low 14's right off the street,no problem
id do a tdi instead for the sick torque increase
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Throttle cables ftw
Reply #8December 06, 2006, 05:03:46 pm

stopping

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AAZ or 1Z/AHU ??
« Reply #8 on: December 06, 2006, 05:03:46 pm »
I guess you are not afraid of electronics eh?
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Reply #9December 07, 2006, 03:26:11 am

stewardc

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AAZ or 1Z/AHU ??
« Reply #9 on: December 07, 2006, 03:26:11 am »
Quote from: stopping
I guess you are not afraid of electronics eh?


Who, me? There are no electronics on either engine that I mentioned. I think the only real significant differences are the head and pistons, but I may be wrong.
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Reply #10December 07, 2006, 04:28:10 am

burn_your_money

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AAZ or 1Z/AHU ??
« Reply #10 on: December 07, 2006, 04:28:10 am »
And the crank, that's a huge differance
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Tyler
Reply #11December 08, 2006, 05:28:01 pm

stewardc

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AAZ or 1Z/AHU ??
« Reply #11 on: December 08, 2006, 05:28:01 pm »
Quote from: burn_your_money
And the crank, that's a huge differance


Not really. Most AAZs have had the crank fix by now.
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Reply #12December 08, 2006, 05:40:02 pm

wolfsburgnut

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AAZ or 1Z/AHU ??
« Reply #12 on: December 08, 2006, 05:40:02 pm »
I wouldn't say most have. I have yet to see one around here have the crank fix, and there a quite a few AAZs in this area.

Peter
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1995 Golf 1.9
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