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Author Topic: Overboring a 1.9 TDi  (Read 4093 times)

January 13, 2009, 05:48:25 am

superspringer

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Overboring a 1.9 TDi
« on: January 13, 2009, 05:48:25 am »
Does any one have experience in increasing the displacement of a 1Z / AFN 1.9 TDi motor? How much can safely be removed from the block and what pistons are good and reliable to use?
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Reply #1January 13, 2009, 02:51:44 pm

the caveman

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Overboring a 1.9 TDi
« Reply #1 on: January 13, 2009, 02:51:44 pm »
There is one over size available.
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" I'm a vegetarian,not because i love animals, it's because i hate plants"
1970 Type 3 fastback
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1971 Super Beetle 140 HP 159 ft lbs
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1989 TD Jetta
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1998 TDI Jetta
1990 T3 German MIL Transporter 1.9 na Giles super pump
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Reply #2January 14, 2009, 03:49:53 pm

jimfoo

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Overboring a 1.9 TDi
« Reply #2 on: January 14, 2009, 03:49:53 pm »
You can put 2.5 pistons in it I think, and get a 2 liter.
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Jim
1966 Land-Rover 88" with 1.9 1Z which has been transformed to an M-TDI
TFO35 mechanically controlled VNT, IC , and 2.5" exhaust.
Driven daily
Reply #3January 15, 2009, 12:36:34 am

superspringer

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Overboring a 1.9 TDi
« Reply #3 on: January 15, 2009, 12:36:34 am »
Who ever said "less is more" was way off the mark.
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Reply #4January 15, 2009, 06:47:28 am

foxracer1

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Overboring a 1.9 TDi
« Reply #4 on: January 15, 2009, 06:47:28 am »
I'm planning on building a TDI I'm interested in the 2.5 pistons. Is there a write up on it?
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Reply #5January 15, 2009, 08:27:26 am

ChopSauce

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Overboring a 1.9 TDi
« Reply #5 on: January 15, 2009, 08:27:26 am »
Quote from: "foxracer1"
Is there a write up on it?


Oh man, this I wonder I could know ! I'm regularly posting about head gasket issues for 1Z/AFN/AHU engines here and - nope - :|

oldskool rich manages to assemble a 2l engine using ALH parts also - see: http://vwdiesel.net/phpBB/viewtopic.php?t=16143
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