T25 Alternative Engine Forum

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Most liked posts	Author	Posted	Liked	Forum
EJ20 Engine Overheating - Solutions?	Basilakios	23 May 2026, 11:54	2 times this week	T25 Alternative Engine Forum
Coolant issues	silverbullet	05 May 2026, 17:27	Once this week	T25 Alternative Engine Forum

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Last post

matsles

Last post by R0B « 08 Oct 2017, 16:07
Replies: 10
by matsles » 16 Jan 2013, 00:01

10 Replies

4199 Views

Last post by R0B
08 Oct 2017, 16:07
Bad earth

Last post by danmetallic « 08 Oct 2017, 14:55
Replies: 3
by dogbreath100 » 04 Oct 2017, 16:52

Hi ,
I have a slight if not annoying problem with my van .
It's an 84 with a 1.9 Diesel engine . I think that I have a bad earth somewhere .
Am I...

3 Replies

3396 Views

Last post by danmetallic
08 Oct 2017, 14:55
Exhaust

Last post by RogerT « 08 Oct 2017, 12:21
Replies: 2
by stephen t25 » 08 Oct 2017, 09:35

Hi all,

I’m looking to treat my 1.9 TDI 1z Whitestar to a new exhaust, what am my options, I’m assuming it will be the same as a standard DG system...

2 Replies

1997 Views

Last post by RogerT
08 Oct 2017, 12:21
t25 2.0 8v gti lumpy running and noisy fuel pump

Last post by Titus A Duxass « 03 Oct 2017, 15:08
Replies: 9
by soniquethedog » 10 Feb 2017, 21:16

hello , i am struggling to find out what is wrong with my t25 gti 2.0l 8v conversion , its been fine since the conversion 4 years ago , it started a...

9 Replies

4413 Views

Last post by Titus A Duxass
03 Oct 2017, 15:08
Steering pump issues AAZ conversion

Last post by wolfbus.uk « 28 Sep 2017, 23:23
Replies: 3
by wolfbus.uk » 28 Sep 2017, 10:54

Hi hoping someone can help with this;

My mechanic has got the early AAZ engine in my previous JX syncro. We are keeping the serpentine belt set up...

3 Replies

2396 Views

Last post by wolfbus.uk
28 Sep 2017, 23:23
Which dipstick JX or AAZ?

Last post by wolfbus.uk « 24 Sep 2017, 12:18

by wolfbus.uk » 24 Sep 2017, 12:18

Hi all
Can someone advise me. When changing from JX Engine to AAZ which dipstick is used the JX one or the AAZ. Really worried about getting that...

0 Replies

2329 Views

Last post by wolfbus.uk
24 Sep 2017, 12:18
"bar-steward" joke read Somerset help with engine conversions

Last post by colinthefox « 23 Sep 2017, 14:56
Replies: 15
by gin23deluxe » 13 Aug 2017, 08:10
1

2
Hi guys I'm looking to do a conversion on my Bus from 1.6 JX TD head gaskets gone
Looking for help from other folk that have done the job themselves...
15 Replies

8652 Views

Last post by colinthefox
23 Sep 2017, 14:56
what engine DF or DG

Last post by Ian Hulley « 27 Sep 2017, 19:14
Replies: 7
by Wear Sunscreen » 20 Sep 2017, 20:10

What are peoples views on changing a DF 1.9 for a DG 1.9.
What are the pitfalls, if any, of this slight upgrade.

7 Replies

4323 Views

Last post by Ian Hulley
27 Sep 2017, 19:14
Help!!! New oil pump binding when fitting on aaz???

Last post by wolfbus.uk « 18 Sep 2017, 13:41
Replies: 5
by wolfbus.uk » 12 Sep 2017, 11:21

The new oil pump I have from Brickwerks turns freely on the bench but when lightly tightened into the aaz block(not in vehicle yet) becomes quite...

5 Replies

3447 Views

Last post by wolfbus.uk
18 Sep 2017, 13:41
GEARBOX for 1.9D (AHU)

Last post by Aidan « 13 Sep 2017, 06:36
Replies: 1
by alexlug » 13 Sep 2017, 02:52

Hello,

The gearbox in our 1991 lovely Holdsworth Villa T25 died somewhere in France

We have finally got her back and will have to...

1 Replies

1693 Views

Last post by Aidan
13 Sep 2017, 06:36
aaz 1.9td serpentine belt noise

Last post by toddylaguna « 12 Sep 2017, 20:12
Replies: 6
by toddylaguna » 11 Sep 2017, 20:31

Hi All

I have a doka with a 1.9td aaz engine installed. It has been making a noise from the serpentine belt area for a while. Not a screeching...

6 Replies

3523 Views

Last post by toddylaguna
12 Sep 2017, 20:12
Ticking over lumpy

Last post by cwe « 10 Sep 2017, 10:29
Replies: 2
by cwe » 09 Sep 2017, 13:21

Hi got a Subaru EJ20 and drives ok but when I'm at a standstill after a run in it it's seems to be idling very lumpy now up and down with the revs...

2 Replies

2314 Views

Last post by cwe
10 Sep 2017, 10:29
Engine

Last post by Aidan « 09 Sep 2017, 10:42
Replies: 3
by Jay68 » 08 Sep 2017, 17:49

I am looking at replacing my engine in my Syncro.
At present I have a AAZ 1.9td but am looking for something a little bigger.
Any suggestions ?

3 Replies

4056 Views

Last post by Aidan
09 Sep 2017, 10:42
Engine ticking over lumpy and white smoke

Last post by lefty67 « 07 Sep 2017, 14:04
Replies: 3
by Tracy&Andy » 30 Aug 2017, 19:54

Hi guys

We recently noticed a small fuel leak coming from the diesel pump (Passat engine 1.9Td, probably 1996/7) so took it off to get it fixed by...

3 Replies

3053 Views

Last post by lefty67
07 Sep 2017, 14:04
subaru engine

Last post by Da dan « 04 Sep 2017, 20:27
Replies: 4
by Wear Sunscreen » 03 Sep 2017, 19:42

Hi, what's peoples thoughts on installing a Subaru engine as a replacement for a 1900cc water cooled?

4 Replies

2828 Views

Last post by Da dan
04 Sep 2017, 20:27
Screeching water pump

Last post by dogbreath100 « 02 Sep 2017, 17:16
Replies: 5
by dogbreath100 » 19 Aug 2017, 15:27

My van 1.9 straight diesel 1 Y has developed a screeching noise from starting .
It usually lasts 45 to 60 seconds and then all is good .
Van doesn't...

5 Replies

2814 Views

Last post by dogbreath100
02 Sep 2017, 17:16
Aaz vs Jx Lda

Last post by wolfbus.uk « 01 Sep 2017, 19:27
Replies: 5
by wolfbus.uk » 29 Aug 2017, 18:45

I'm converting my syncro 1.6td to a 1.9td aaz. We're going to use the aaz pump but not sure if I will need any parts such as the Jx lda to make it...

5 Replies

3607 Views

Last post by wolfbus.uk
01 Sep 2017, 19:27
TDI Swap build threads

Last post by nevill3 « 30 Aug 2017, 17:47
Replies: 1
by volks_womble » 30 Aug 2017, 10:46

I want to swap the jx in our Westy for something with a bit more go. I think that the best bet for me would be to go down the AFN/AHF route.

I...

1 Replies

1448 Views

Last post by nevill3
30 Aug 2017, 17:47
AAZ Connecting Rods

Last post by aerovolito « 28 Aug 2017, 14:27

by aerovolito » 28 Aug 2017, 14:27

My early AAZ has a bent conrod and I have a spare but it is from a later engine. I know they are slightly different but am I safe to use it? Also, is...

0 Replies

2743 Views

Last post by aerovolito
28 Aug 2017, 14:27
Need to reduce boost as get-me-home 1z engine

Last post by pirate-pete « 26 Aug 2017, 13:16
Replies: 3
by pirate-pete » 25 Aug 2017, 15:20

On hols in France and all well until yesterday. Had the boost pipe to intercooler pop off seven times on our 300 km journey. On my conversion the...

3 Replies

3171 Views

Last post by pirate-pete
26 Aug 2017, 13:16
Oil change on AAZ

Last post by Middle29 « 25 Aug 2017, 20:32
Replies: 2
by Middle29 » 24 Aug 2017, 11:26

I'm about to do an oil change on an AAZ. Am I correct in assuming 4.5l if I change the oil filter?

I understand an AAZ conversion can have a...

2 Replies

2695 Views

Last post by Middle29
25 Aug 2017, 20:32
1z TDI intercooler

Last post by KINGPRAWN « 25 Aug 2017, 11:03
Replies: 1
by KINGPRAWN » 16 Aug 2017, 19:23

Would anybody happen to know the OE hose diameter of the hoses that connect to the manifold to cooler ( manifold end)... thanks

1 Replies

1723 Views

Last post by KINGPRAWN
25 Aug 2017, 11:03
The Toad's DG to AGG Gti Conversion

Last post by rett « 23 Aug 2017, 22:40
Replies: 88
by badgerfax » 14 Apr 2015, 21:21
1

2

3

4

5

6
I don't know if anyone will be interested in this thread seeing as there is an identical conversion being done by Syncropatrick but did not want to...
88 Replies

58755 Views

Last post by rett
23 Aug 2017, 22:40
Temperature gauge red flashing light

Last post by slowcoach « 22 Aug 2017, 10:04
Replies: 4
by neilh » 15 Aug 2017, 13:07

Hi all

I have successfully installed a Subaru EJ20 into my van, and it runs brilliantly, making hills a doddle now!
I've been back on the road a...

4 Replies

2719 Views

Last post by slowcoach
22 Aug 2017, 10:04
AAZ CONVERSION SUMP BOLT TORQUE SETTING

Last post by PipH657HPE « 16 Aug 2017, 21:28

by PipH657HPE » 16 Aug 2017, 21:28

Hi, can anybody please tell me the torque setting of the sump bolts that fix the sump onto the block, standard aaz conversion from a jx, also torque...

0 Replies

2120 Views

Last post by PipH657HPE
16 Aug 2017, 21:28
Tdi cruise control

Last post by Blue str « 15 Aug 2017, 09:36

by Blue str » 15 Aug 2017, 09:36

Hi there.
I have a 1.9ahu fitted in my van.
When it was converted I had a cruise stalk fitted.
I have never really used it.
How exactly should it...

0 Replies

1843 Views

Last post by Blue str
15 Aug 2017, 09:36
Engine replacement dilemma

Last post by theladfromleigh « 13 Aug 2017, 17:57
Replies: 8
by MinionBob » 04 Feb 2016, 21:30

Dear all,

I'm a bit of a novice to the full workings of engines but am enjoying(!) finding out. Following coolant leak and general non-starting our...

8 Replies

5949 Views

Last post by theladfromleigh
13 Aug 2017, 17:57
AFN Pedal position sensor problem

Last post by spanishfly « 05 Aug 2017, 17:28
Replies: 9
by spanishfly » 04 Jun 2017, 15:27

Hi
I'm learning a bit more everyday thanks to this forum!
Today I'm trying to get my throttle to respond in first.
Van has an AFN from 1998 Passat...

9 Replies

4438 Views

Last post by spanishfly
05 Aug 2017, 17:28
EA827 or EA111 Golf Engine in T25?

Last post by R0B « 03 Aug 2017, 21:59
Replies: 1
by Timmo » 03 Aug 2017, 21:11

Hi (if you can help please)
I have a T25 JX 1.6 TD.
I am trying to plan an engine swap for it for the following reasons.
Less than 1549 cc = 150 Car...

1 Replies

2198 Views

Last post by R0B
03 Aug 2017, 21:59
VW Lupo Intermittent fault - 1.4 petrol BBY engine

Last post by scaltura « 03 Aug 2017, 19:29
Replies: 5
by JustSharon » 03 Aug 2017, 18:22

Not T25 but VW, Georgia's 1.4 Lupo (petrol) has an intermittent fault - rough idling, "pooh" to start, like missing especially when it's damp outside....

5 Replies

4204 Views

Last post by scaltura
03 Aug 2017, 19:29
Rad fan cooling

Last post by vwaddict « 03 Aug 2017, 19:04
Replies: 7
by vwaddict » 17 Jun 2017, 23:49

I have a water cooled t25 which was a jx but now has a AGG conversion fitted, my temperature gauge allways sits just over 3/4 even when the jx was...

7 Replies

3812 Views

Last post by vwaddict
03 Aug 2017, 19:04
Is this the answer to post 2040 lol ;-)

Last post by hightop ratty « 02 Aug 2017, 11:01

by hightop ratty » 02 Aug 2017, 11:01

Is this the answer to alternative engines post 2040 ?!?!?!

High Performance Plug-In Hybrid - GTE DSG

Volkswagen Golf GTE

1.4 TSi (204ps) GTE...

0 Replies

1843 Views

Last post by hightop ratty
02 Aug 2017, 11:01
Various Engine Sensor Woes

Last post by bmouthboyo « 02 Aug 2017, 08:17
Replies: 2
by bmouthboyo » 31 Jul 2017, 17:26

Background Info
My van was originally a DG but in the early 90's a previous owner was on of the first people to put a GTI in a T25. As such I have a...

2 Replies

2806 Views

Last post by bmouthboyo
02 Aug 2017, 08:17
Aircooled to 2.0agg

Last post by multisi « 30 Jul 2017, 13:51
Replies: 3
by bens_cab » 26 Jul 2017, 17:46

Right I've collected all the parts I need from two donor vehicles I want to retain my Aircooled gearbox which I think is a dk now I'm to use later...

3 Replies

1777 Views

Last post by multisi
30 Jul 2017, 13:51
saggy back end/rear spring query

Last post by RogerT « 30 Jul 2017, 11:06
Replies: 9
by green thing » 23 Jul 2017, 08:55

Since fitting a 1.9 tdi a few years ago the back end is a bit lower than it should be, especially when it`s loaded up. Mine is `80 so maybe the...

9 Replies

4676 Views

Last post by RogerT
30 Jul 2017, 11:06
Injection pump timing tool needed

Last post by Funbus « 17 Jul 2017, 14:52

by Funbus » 17 Jul 2017, 14:52

Hi all.
I'm after timing tools for Bosch fuel injection pump on aaz engine. A loan would be ideal, I'm located Middlesbrough (and will obviously...

0 Replies

1923 Views

Last post by Funbus
17 Jul 2017, 14:52
Oil grade for AFN Tdi

Last post by randolph57 « 15 Jul 2017, 08:49
Replies: 4
by peteandnero » 13 Jul 2017, 21:39

Hi, I wondered what the opinions of more expert members would be on the best oil grade for Tdi conversion with around 130bhp. This was a fully...

4 Replies

3697 Views

Last post by randolph57
15 Jul 2017, 08:49
Accelerator Cable needed for 1.8 Gti Conversion?

Last post by bmouthboyo « 14 Jul 2017, 11:58
Replies: 5
by bmouthboyo » 01 Feb 2017, 15:08

Hi Guys,

I need to replace the accelerator cable for my Gti conversion as the part under the pedal was damaged when welding. I am not sure if I buy...

5 Replies

3716 Views

Last post by bmouthboyo
14 Jul 2017, 11:58
To WBX or Not?

Last post by philyoung « 12 Jul 2017, 12:52
Replies: 17
by Mojoh » 11 Jun 2017, 22:06
1

2
Greetings Engine Swappers. I am sorry, but I just can't resist...

Before you throw away that gorgeous WBX, have you considered the 'plug and play'...
17 Replies

8806 Views

Last post by philyoung
12 Jul 2017, 12:52
Ed code in a t25?

Last post by bigherb « 09 Jul 2017, 20:21
Replies: 3
by steve66 » 09 Jul 2017, 10:06

Hi all! I currently run a ct in my 1980 Devon, it's fine but very underpowered. I've seen an ed code engine 1.8 fuel injected 70bhp originally fitted...

3 Replies

2080 Views

Last post by bigherb
09 Jul 2017, 20:21
Replacement engine from 04 passet 1.9td redeye

Last post by syncroandy « 09 Jul 2017, 08:03
Replies: 1
by dickspanner » 08 Jul 2017, 15:01

Ok. Basic question. I have been offered a 1.9passat on 04 place. It is a 1.9 turbo diesel redeye .

Ignoring electrical issue at moment.

Does...

1 Replies

1886 Views

Last post by syncroandy
09 Jul 2017, 08:03
Split coolant hose

Last post by sandyman « 09 Jul 2017, 07:55
Replies: 2
by sandyman » 08 Jul 2017, 22:58

Hi all
Had the water pump changed and shortly after one of the hoses burst- trying to identify the part number/name of the one I need. I have an 1996...

2 Replies

1855 Views

Last post by sandyman
09 Jul 2017, 07:55
T25 Subaru turbo = project begins

Last post by Domino « 08 Jul 2017, 16:35
Replies: 80
by Domino » 14 Jul 2016, 06:42
1

2

3

4

5

6
Well iv finally got around to starting the engine swap on my van ,, decided I wanted to go strait to a turbo engine as I know these engines like the...
80 Replies

41219 Views

Last post by Domino
08 Jul 2017, 16:35
Troubles in France, ej20!

Last post by slowcoach « 07 Jul 2017, 09:32
Replies: 25
by slowcoach » 08 Jun 2017, 18:42
1

2
Hi all,
We're a bit stuck, although we've limped to a nice campsite fortunately. Takes on a different importance when travelling with a 4month old!...
25 Replies

12349 Views

Last post by slowcoach
07 Jul 2017, 09:32
Do I need to replace coolant?

Last post by mrnickmuss « 04 Jul 2017, 06:08

by mrnickmuss » 04 Jul 2017, 06:08

My head gaskett went recently on my AAZ and I have just got it all back up and running. As I was topping up the expansion chamber ready to bleed I...

0 Replies

1815 Views

Last post by mrnickmuss
04 Jul 2017, 06:08
N75

Last post by Wallace748 « 03 Jul 2017, 19:18

by Wallace748 » 03 Jul 2017, 19:18

Anyone got the correct hose locations on a 93 1z n75 valve had a browse had different suggestions! Cheers all

0 Replies

1978 Views

Last post by Wallace748
03 Jul 2017, 19:18
Suburu Engine Models

Last post by Oldiebut goodie « 03 Jul 2017, 15:23
Replies: 1
by MushroomGaz » 03 Jul 2017, 11:55

Can anyone explain the different Subaru Engine Models available to use as upgrades including bhp output, expected top speed when in a T25? Any...

1 Replies

1646 Views

Last post by Oldiebut goodie
03 Jul 2017, 15:23
Td fuel pump timing, turbo re indexing and other things

Last post by z3i « 02 Jul 2017, 10:21
Replies: 2
by z3i » 02 Jul 2017, 10:05

Hello guys I (unfortunately) have more questions about my TD engine :S I am sorry

I cant upload pictures as the resolution is too big even though I...

2 Replies

2001 Views

Last post by z3i
02 Jul 2017, 10:21
AAZ fuel pump timing

Last post by mrnickmuss « 01 Jul 2017, 20:23
Replies: 2
by mrnickmuss » 01 Jul 2017, 19:48

After killing my previous AAZ engine and replacing it with another which also had issues, I have now had the head skimmed and have replaced the...

2 Replies

2155 Views

Last post by mrnickmuss
01 Jul 2017, 20:23

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