T25 Alternative Engine Forum

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Most liked posts	Author	Posted	Liked	Forum
1y identification	Oldiebut goodie	09 Feb 2026, 18:02	2 times this week	T25 Alternative Engine Forum

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Last post

Subaru idle problem (EJ20 in a T25)

Last post by torsen « 18 Dec 2017, 07:52
Replies: 4
by Hoopy_Frood » 11 Dec 2017, 17:29

Hi,
Apologies for the long, probably rambling post.
I have a my2000 EJ20 (MAP configuration) in a 1984 VW T25. Conversion parts were from RJES and...

4 Replies

4307 Views

Last post by torsen
18 Dec 2017, 07:52
JX/ AAZ Rocker cover / oil breather leak

Last post by wolfbus.uk « 15 Dec 2017, 21:45
Replies: 2
by wolfbus.uk » 15 Dec 2017, 13:09

Hi ive done about a thousand miles on new AAZ engine.
It's leaking a little oil from the rocker cover/top breather area. We fitted a new seal during...

2 Replies

2037 Views

Last post by wolfbus.uk
15 Dec 2017, 21:45
Dyno facilities

Last post by philyoung « 15 Dec 2017, 17:54
Replies: 4
by philyoung » 08 Nov 2017, 11:37

Can anybody recommend a dyno facility within striking distance of Portsmouth that can cope with a syncro (ideally prefer not to have to take the...

4 Replies

3231 Views

Last post by philyoung
15 Dec 2017, 17:54
Diesel 1.9 1y conversion

Last post by ajsimmo « 12 Dec 2017, 09:08
Replies: 3
by rollingheavy » 10 Dec 2017, 14:06

Hi all,
I have a jx 1.6 n/a diesel at present in my van which im looking to change for the 1.9 1y n/a diesel. I have read through the running thread...

3 Replies

1939 Views

Last post by ajsimmo
12 Dec 2017, 09:08
DG to DJ ?

Last post by Moonrakers « 09 Dec 2017, 22:48
Replies: 5
by woodguru » 06 Dec 2017, 16:13

Can anyone explain the basic differences between the DG and the DJ engines, apart from cc. I was considering replacing my knackered DG engine with a...

5 Replies

4044 Views

Last post by Moonrakers
09 Dec 2017, 22:48
engine swap for 1.8T

Last post by woodguru « 27 Nov 2017, 12:39
Replies: 4
by batesy16 » 19 Oct 2017, 11:43

I am possibly looking at swapping my 1.9dg out for a 1.8T engine.

I have the chance of buying a whole car for a good price, so would everything I...

4 Replies

4023 Views

Last post by woodguru
27 Nov 2017, 12:39
Ej20 or Ej 22 conversion

Last post by clarence « 20 Nov 2017, 18:56

by clarence » 20 Nov 2017, 18:56

Hi I’m looking for an experienced Mechanic/garage in Lancashire pref on the Fylde coast,to do a Subaru engine conversion to my T25 Westy,regards Craig

0 Replies

3055 Views

Last post by clarence
20 Nov 2017, 18:56
What air filter

Last post by Stovies « 20 Nov 2017, 07:00
Replies: 2
by Stovies » 19 Nov 2017, 19:36

As title says I have a 1.9 desiel polo Aef engine with a CS air intake manifold. So what is the number or an air filter to fit, as it's a bit of a...

2 Replies

1586 Views

Last post by Stovies
20 Nov 2017, 07:00
Jx 1.6 td oil leak

Last post by Al Housman « 17 Nov 2017, 22:20
Replies: 7
by jacko1967 » 11 Nov 2017, 18:41

Hi I have a jx1.6td which has just got an oil leak at the head gasket under / near the oil filter pipe work my questions are can i put something in...

7 Replies

4073 Views

Last post by Al Housman
17 Nov 2017, 22:20
1.9DG - AEF parts list

Last post by Stovies « 17 Nov 2017, 06:41
Replies: 20
by oliverriddett » 23 Jan 2017, 06:57
1

2
Hey fellow lunatics. Is anybody able to source me a list of exactly what I need for the said swap and where to find them? All help will be very much...
20 Replies

7944 Views

Last post by Stovies
17 Nov 2017, 06:41
starter motor noise 82 GTI engine

Last post by Oldiebut goodie « 16 Nov 2017, 10:00
Replies: 2
by soniquethedog » 02 Oct 2017, 16:29

hello all , i have just replaced my starter motor on my 82 T25 after it was getting really noisy and finally gave up , so i replaced it with the same...

2 Replies

1811 Views

Last post by Oldiebut goodie
16 Nov 2017, 10:00
Bellhousing hole?

Last post by waltraud « 15 Nov 2017, 22:40
Replies: 10
by waltraud » 11 Nov 2017, 19:59

Hi, can anyone confirm if this is a syncro bellhousing and if so as i’m using on a DG to AGG conversation should it be blanked off and, if yes does...

10 Replies

4275 Views

Last post by waltraud
15 Nov 2017, 22:40
EWP (electric water pump) radiator

Last post by garyd « 13 Nov 2017, 17:24
Replies: 10
by crazydiamond » 01 Nov 2017, 17:22

As a few of you know, ive fought (and lost) an ongoing battle with overheating on my Syncro. Talking to a few people around Busfest and other places,...

10 Replies

8967 Views

Last post by garyd
13 Nov 2017, 17:24
What am i missing from here.

Last post by ajsimmo « 05 Nov 2017, 23:44
Replies: 6
by pleasestartnow » 05 Nov 2017, 10:02

Hi all,

New fuel filter arrived to replace and there is a blank slot any ideas what is supposed to go in there?
1.9D engine. Have a free Sunday so...

6 Replies

3233 Views

Last post by ajsimmo
05 Nov 2017, 23:44
AAZ oil leak

Last post by lefty67 « 04 Nov 2017, 13:20
Replies: 5
by kevin930 » 28 Oct 2017, 21:23

Hi
Have a oil leak from cylinder head ventilation system. onclick= window.open(this.href);return false; hopefully this link will show it. It's coming...

5 Replies

3625 Views

Last post by lefty67
04 Nov 2017, 13:20
Oil light at startup

Last post by colinthefox « 03 Nov 2017, 16:39
Replies: 2
by johninleeds » 03 Nov 2017, 13:00

Hello,

I've got a 1984 diesel with a 1Y 1900 NA in it.

Did an oil change the other week (putting TRIPLE QX Mineral Diesel Engine Oil - 15W-40 in)...

2 Replies

2071 Views

Last post by colinthefox
03 Nov 2017, 16:39
advice on re wiring

Last post by Stovies « 03 Nov 2017, 12:55

by Stovies » 03 Nov 2017, 12:55

Hi All,
I have inherited a real mess of wiring for the conversion in the engine bay, I have about 3 relays that I have no clue what they do as of...

0 Replies

2121 Views

Last post by Stovies
03 Nov 2017, 12:55
Which bolt is the oil sump?

Last post by Ian Hulley « 01 Nov 2017, 22:40
Replies: 7
by pleasestartnow » 01 Nov 2017, 14:55

Hi all,

Quick question. Due an engine oil change and about to do it and there is two bolts in the oil container (not sure of ts proper name) that...

7 Replies

4198 Views

Last post by Ian Hulley
01 Nov 2017, 22:40
Time to "Subaruin" EJ20 or EJ25 in a Westy?

Last post by IainG « 31 Oct 2017, 13:39
Replies: 92
by printmonkey » 19 Apr 2016, 10:12
1

…

3

4

5

6

7
Morning, I'm getting ready to swap over to a Subaru engine. My 2.1 runs well (it's never let me down) but is down on power. To be honest I've always...
92 Replies

48118 Views

Last post by IainG
31 Oct 2017, 13:39
Exhaust options for EJ20

Last post by IainG « 31 Oct 2017, 13:30
Replies: 5
by jmdlister » 20 Sep 2017, 14:09

Hi Folks,

Haven't been around for a while, but my van has just failed its MOT due to a knackered exhaust (and a few other minor issues).

When I...

5 Replies

2716 Views

Last post by IainG
31 Oct 2017, 13:30
Loss of power on the motorway

Last post by pleasestartnow « 30 Oct 2017, 15:25
Replies: 4
by pleasestartnow » 30 Oct 2017, 13:48

Hi all,

1.9D

Just been travelling about the last 3 days in my van and in the last hour it felt like it was losing power, particularly when going...

4 Replies

2494 Views

Last post by pleasestartnow
30 Oct 2017, 15:25
AAZ Coversion To Do List

Last post by T25Kernow « 28 Oct 2017, 20:25
Replies: 4
by T25Kernow » 27 Oct 2017, 06:11

I've just taken an AAZ engine out of a Golf to be transplanted into our T25.

The engine is now on a stand and I'm drawing up a to do list of jobs...

4 Replies

3019 Views

Last post by T25Kernow
28 Oct 2017, 20:25
1.6 d to 1.9 d install help required in midlands

Last post by boatbuilder « 27 Oct 2017, 22:14
Replies: 8
by luke » 11 Oct 2017, 11:21

Hi, Looking for anyone out there who could help carry out an engine upgrade from original 1.6 non turbo diesel to a 1.9 non turbo diesel from a 1999...

8 Replies

3822 Views

Last post by boatbuilder
27 Oct 2017, 22:14
Subaru engines

Last post by slowcoach « 27 Oct 2017, 21:41
Replies: 1
by philmcC » 27 Oct 2017, 16:26

I have a 1.9 DG WB X engine in my autohomes komet. Goes very well though you have to change gears a bit going up steep hills. Thinking of the future...

1 Replies

1427 Views

Last post by slowcoach
27 Oct 2017, 21:41
Out of my depth: My engine isn't a JX

Last post by JonB « 26 Oct 2017, 21:46
Replies: 12
by JonB » 09 Oct 2017, 21:24

My van is currently at the garage after the engine blew its head gasket. I'd prepared myself for the worst and figured a new cylinder head maybe...

12 Replies

5773 Views

Last post by JonB
26 Oct 2017, 21:46
AAZ rocker cover leak - project

Last post by dekhelia « 26 Oct 2017, 13:11
Replies: 2
by dekhelia » 07 Oct 2017, 11:04

Right. The rocker cover on my AAZ has pretty much always had a leak. Well, more of a strong weep. Thin layer of oil on inlet manifold, induction...

2 Replies

1807 Views

Last post by dekhelia
26 Oct 2017, 13:11
Anyone running lpg on an AGG?

Last post by waltraud « 23 Oct 2017, 08:59
Replies: 2
by waltraud » 22 Oct 2017, 21:25

Anyone running lpg on an AGG? I have a Blos unit on my DG and hoping that someone has used a Blos to run the gti engine on Gas?

Sent from my...

2 Replies

1780 Views

Last post by waltraud
23 Oct 2017, 08:59
Clutch for 1Y engine replacement?

Last post by Aidan « 19 Oct 2017, 13:30
Replies: 18
by soundhound » 18 Oct 2016, 09:48
1

2
hello folks

I have a 1985 T25 which had a 1.6D engine until the cooling system went to pot.
so I have put in a 1Y engine, a 1.9D Seat Inca.
the...
18 Replies

8534 Views

Last post by Aidan
19 Oct 2017, 13:30
Temperature gauge not working

Last post by sandyman « 14 Oct 2017, 21:09

by sandyman » 14 Oct 2017, 21:09

Since fitting an aaz into my T25 the temp gauge has never really worked- it's only ever registered a tiny bit. To someone who didn't know it seems as...

0 Replies

2364 Views

Last post by sandyman
14 Oct 2017, 21:09
timing belt change

Last post by jas915 « 09 Oct 2017, 17:01
Replies: 2
by jas915 » 07 Oct 2017, 16:17

Hi made a start on changing the timing belt on my AAZ, can the crank alternator pulley be removed without taking the silencer off? Im sure i didn't...

2 Replies

1745 Views

Last post by jas915
09 Oct 2017, 17:01
matsles

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

10 Replies

4020 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

3140 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

1883 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

4152 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

2233 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

2222 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

8153 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

4045 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

3260 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

1585 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

3259 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

2164 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

3885 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

2903 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

2644 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

2615 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

3375 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

1316 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

2630 Views

Last post by aerovolito
28 Aug 2017, 14:27

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