T25 Alternative Engine Forum

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Most liked posts	Author	Posted	Liked	Forum
TDI annoying pause when pulling away	hotpod	12 Jun 2025, 21:40	Once this week	T25 Alternative Engine Forum

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Last post

Subaru Surgery

Last post by izzybarnard « 08 Sep 2021, 11:46
Replies: 5
by Smiffo » 07 Sep 2021, 16:57

Anyone have any experience with this company?

I'm nowhere near in a position to do it yet, but every now and again I consider a Subaru conversion....

5 Replies

1755 Views

Last post by izzybarnard
08 Sep 2021, 11:46
Heads-up re. LED brake lamps causing TDI limp mode

Last post by syncroandy « 01 Sep 2021, 11:19

by syncroandy » 01 Sep 2021, 11:19

Just a quick heads-up to anyone running a VAG drive-by-wire engine including any 1993-2005 TDI (and probably later), or petrol engine from ~2000...

0 Replies

2466 Views

Last post by syncroandy
01 Sep 2021, 11:19
AFN TDI Throttle problem

Last post by syncroandy « 31 Aug 2021, 19:26
Replies: 9
by Mudlark » 26 Apr 2021, 13:42

Hi All

My AFN TDI has developed an annoying intermittent fault on the throttle.

The power will suddenly die without warning. Take the foot of the...

9 Replies

3942 Views

Last post by syncroandy
31 Aug 2021, 19:26
What engine?

Last post by DoubleOSeven « 17 Aug 2021, 21:30
Replies: 16
by Sighmoon » 16 Aug 2021, 08:20
1

2
I have a '85 Autosleeper that appeared to start life as a 1.9 petrol. It has had a diesel conversion ( 1600 non turbo I think ) but I cannot any...
16 Replies

5323 Views

Last post by DoubleOSeven
17 Aug 2021, 21:30
T3 with AAZ engine

Last post by sweetaswesty « 06 Aug 2021, 21:32
Replies: 4
by Andyvandy » 05 Aug 2021, 12:34

I have a 1990 T3 Westfalia which had the original JX engine changed for an AAZ by the previous owner. So far so good (if you live in the UK!).

We...

4 Replies

1911 Views

Last post by sweetaswesty
06 Aug 2021, 21:32
Aaz 1.9td thermostat hose to metal return pipe.

Last post by Aidan « 26 Jul 2021, 07:04
Replies: 1
by Nathan290 » 25 Jul 2021, 21:07

Hi all, I have an aaz 1.9td fitted to my van. It came already converted.

I have an issue with the thermostat to metal return hose, it's leaking...

1 Replies

1395 Views

Last post by Aidan
26 Jul 2021, 07:04
oil trap

Last post by Jim San « 21 Jul 2021, 08:31
Replies: 2
by Jim San » 20 Jul 2021, 17:46

Anyone fitted an oil trap?

Van is currently waiting to go under the knife to have a couple of oil seals replaced and a water jacket plug to fix the...

2 Replies

1507 Views

Last post by Jim San
21 Jul 2021, 08:31
Which oil pressure switch?

Last post by Mark S « 21 Jul 2021, 08:25
Replies: 3
by Mark S » 05 Sep 2020, 16:21

There is always oil inside the boot of my oil pressure switch atop the filter mounting and so I suspect it might be leaking. Should be simple job to...

3 Replies

2270 Views

Last post by Mark S
21 Jul 2021, 08:25
AAZ pump on a TDI engine???

Last post by Aidan « 12 Jul 2021, 08:45
Replies: 7
by Al Housman » 28 Jun 2021, 15:51

Just thinking outside of the box.

I have a recon diesel pump off a spare AAZ engine and was musing as to whether it would bolt straight on to an...

7 Replies

2763 Views

Last post by Aidan
12 Jul 2021, 08:45
DMF clutch on an AAZ?

Last post by Al Housman « 04 Jul 2021, 06:34

by Al Housman » 04 Jul 2021, 06:34

My gearbox is going to Aidan’s for some tlc next month and thought was to get him to change the shaft so that I can fit a dual mass flywheel...

0 Replies

3341 Views

Last post by Al Housman
04 Jul 2021, 06:34
problems with cooling system

Last post by RogerT « 25 Jun 2021, 21:29
Replies: 24
by feardana » 01 Aug 2012, 22:44
1

2
Hi, I'm a newbie in more ways than one but i'm keen to learn and i'll try not to be too thick/annoying in the process :)

we bought our bus a couple...
24 Replies

17899 Views

Last post by RogerT
25 Jun 2021, 21:29
Lucky Spragg's engine upgrade

Last post by Schnippzle « 25 Jun 2021, 13:57
Replies: 15
by silverbullet » 05 May 2021, 13:20
1

2
This one has been on the cards for a while...
Anyway, it finally arrived a few weeks ago and typically I am overloaded with work again!
Made a start,...
15 Replies

4895 Views

Last post by Schnippzle
25 Jun 2021, 13:57
Subaru ej20 coolant leak

Last post by slowcoach « 17 Jun 2021, 10:20
Replies: 13
by Grogg » 13 Jun 2021, 15:36

Hi Everyone,

My van has sprung a leak. After a drive in the heat and traffic I parked up and heard a hiss I looked under the van to see coolant...

13 Replies

3045 Views

Last post by slowcoach
17 Jun 2021, 10:20
sooty air filter

Last post by sivan « 17 Jun 2021, 09:36
Replies: 8
by sivan » 28 May 2021, 07:58

Morning All

Had my bus serviced last year not long after purchase and air filter was very dirty, put this down to PO neglect ,however just had a...

8 Replies

2211 Views

Last post by sivan
17 Jun 2021, 09:36
1.9aef engine engine issue ..help please

Last post by roonstar « 15 Jun 2021, 05:10
Replies: 2
by roonstar » 13 Jun 2021, 22:50

right guys so fitted the aef engine into the van originally a petrol van
been driving it last 2 days, felt fine ,then tonight on way home van started...

2 Replies

1460 Views

Last post by roonstar
15 Jun 2021, 05:10
Add CEL for AGG conversion

Last post by ELVIS « 01 Jun 2021, 15:23
Replies: 11
by JacobusRoux » 13 May 2021, 19:36

Hi all,

I've completed a 2.0 AGG conversion in my '89 Syncro Microbus. Now I'm trying to add an Check Engine Light to my dash.

I'm a bit ignorant...

11 Replies

3396 Views

Last post by ELVIS
01 Jun 2021, 15:23
AAz 1.9TD 1988 LHD turning over but not starting .

Last post by ZsZ « 27 May 2021, 10:17
Replies: 2
by jacko1967 » 24 May 2021, 20:22

Hi haven't started my van for nearly a week since driving to the lake District no problems.today it wouldn't start battery's good starter is cranking...

2 Replies

1574 Views

Last post by ZsZ
27 May 2021, 10:17
Help alternator

Last post by roonstar « 11 May 2021, 18:18
Replies: 2
by roonstar » 11 May 2021, 17:08

OK so I've fitted a diesel aef engine to our van (originally a petrol )
Alternator shows on dash that its not charging ,but I just needed to know if...

2 Replies

1974 Views

Last post by roonstar
11 May 2021, 18:18
fan belt fitting

Last post by Cdm181070 « 09 May 2021, 22:11
Replies: 8
by alank950 » 19 Jun 2016, 19:21

Can someone post a pic of their fan belt fitted?.I am wondering if it fits on in a loop or around the pullys in a fig 8 ..Van 1.9D

8 Replies

3760 Views

Last post by Cdm181070
09 May 2021, 22:11
subaru conversion

Last post by shaunyp « 05 May 2021, 18:00
Replies: 4
by shaunyp » 25 Apr 2021, 12:14

Hi all, i hope your all keeping well, i own a t25 and during lockdown i have fitted a 2.0l subaru engine, the problem i`m having is that it will...

4 Replies

2168 Views

Last post by shaunyp
05 May 2021, 18:00
1.9 1Y oil leak source?

Last post by R0B « 28 Apr 2021, 13:06
Replies: 1
by nucleus666 » 25 Apr 2021, 08:29

Hi folks

Absolute newbie here with a 1982 with a 1.9 1Y engine. I’ve recently developed an oil leak which looks like it may be originating from...

1 Replies

1469 Views

Last post by R0B
28 Apr 2021, 13:06
New to forum - views please.

Last post by Aidan « 27 Apr 2021, 12:01
Replies: 1
by kevmday » 27 Apr 2021, 09:50

Recently had work completed on an 82 Danbury conversion. Originally a 2l petrol, it now has a Golf 1.9TDi 1Z/AHU. It is attached to an original 1.6d...

1 Replies

1463 Views

Last post by Aidan
27 Apr 2021, 12:01
Melted 1y diesel injector seal

Last post by Cdm181070 « 18 Apr 2021, 05:48
Replies: 10
by Cdm181070 » 28 Mar 2021, 07:13

I have just fitted a 1y engine with reconditioned injectors and pump, It has just been running in the workshop and only driven around a yard. The...

10 Replies

3515 Views

Last post by Cdm181070
18 Apr 2021, 05:48
Old (KY) Injection Pump on 1Y Engine

Last post by steveo9007 « 16 Apr 2021, 17:18
Replies: 3
by The Hairy Camper » 10 Apr 2021, 13:03

Just swapping over an old (working) injection pump onto my 1Y.

Was going well until i noticed the non working pump had threads to bolt straight to...

3 Replies

2099 Views

Last post by steveo9007
16 Apr 2021, 17:18
Aidan's wbx 2.5

Last post by silverbullet « 09 Apr 2021, 19:52
Replies: 13
by silverbullet » 15 Jan 2021, 22:52

I'm starting the new year with a rapid 2.5 build for our very own gearbox guru.
The case was prepared for 98mm cylinders a while ago and I'm going...

13 Replies

4910 Views

Last post by silverbullet
09 Apr 2021, 19:52
VR6 engine in a T25

Last post by josephcarey1 « 05 Apr 2021, 21:51
Replies: 14
by josephcarey1 » 30 Oct 2020, 21:49

Hi guys,
I’m Joe from Surrey.
I’m new here and this is my first post.
So, I’ve recently bought a 2.1DG T25 Caravelle.

The engine was losing water...

14 Replies

12304 Views

Last post by josephcarey1
05 Apr 2021, 21:51
diesel flywheels

Last post by t25adict « 21 Feb 2021, 12:40
Replies: 17
by t25adict » 17 Jan 2021, 01:23
1

2
I have a 1.6d from an Audi 80 that I plan to put into a Doka that I am working on but I don't have a standard T3 flywheel.

So looking at other...
17 Replies

5027 Views

Last post by t25adict
21 Feb 2021, 12:40
Throttle bodies on a wbx

Last post by 300CE « 17 Feb 2021, 18:58
Replies: 3
by silverbullet » 15 Feb 2021, 21:59

I have found a German company who make Weber flange pattern inlet manifolds and throttle bodies that will fit the wbx and they are not expensive!
It...

3 Replies

1828 Views

Last post by 300CE
17 Feb 2021, 18:58
Cabin heat, 1.8T conversion, extra pump?

Last post by DSM « 12 Feb 2021, 10:59
Replies: 15
by rollercoaster » 25 Jan 2021, 17:07
1

2
Something thats not been quite right with my 1.8t conversion is the cabin heater,
its ok when I'm driving but at standstill, tickover, it just doesnt...
15 Replies

4446 Views

Last post by DSM
12 Feb 2021, 10:59
WBX test rig

Last post by silverbullet « 11 Feb 2021, 22:30
Replies: 18
by silverbullet » 01 Nov 2019, 21:59
1

2
I've been building this to test fresh rebuilds prior to dispatch.
It's built from an engine stand, bellhousing and a custom starting loom by...
18 Replies

6224 Views

Last post by silverbullet
11 Feb 2021, 22:30
1.9dg to agg conversion

Last post by axeman « 09 Feb 2021, 22:07
Replies: 24
by Hirst80 » 12 Dec 2020, 18:34
1

2
Could anyone be so kind and point me into the right direction of some information on an agg conversion into my 1.9dg I’ve got a good idea, but I like...
24 Replies

8523 Views

Last post by axeman
09 Feb 2021, 22:07
AAZ turbo oil leakage 1.9 td

Last post by jacko1967 « 04 Feb 2021, 18:46
Replies: 2
by jacko1967 » 04 Feb 2021, 14:45

Hi anybody out there with pics of there AAZ convertion turbo oil return pipe??? my 2 year old turbo is blowing oil thru and out, iam thinking the oil...

2 Replies

1890 Views

Last post by jacko1967
04 Feb 2021, 18:46
Turbo

Last post by stephen t25 « 03 Feb 2021, 09:35

by stephen t25 » 03 Feb 2021, 09:35

Hi all,

I’m after a new turbo for my 1.9tdi 1z any recommendations for a uk supplier ?

Many thanks in advance 👍

Cheers Steve .

0 Replies

4294 Views

Last post by stephen t25
03 Feb 2021, 09:35
Syncro engine swap - DJ to AGG

Last post by syncropatrick « 17 Jan 2021, 07:31
Replies: 252
by syncropatrick » 03 Apr 2015, 15:03
1

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13

14

15

16

17
And so its starts. What better way for a chap to spend 16 days while his wife is away.
This should be easy eh!
Step 1 = take DJ out
step 2 = take AGG...
252 Replies

142465 Views

Last post by syncropatrick
17 Jan 2021, 07:31
JX to AHU 1Z MTDI engine conversion, what do I need

Last post by syncro garry « 06 Jan 2021, 19:12
Replies: 6
by syncro garry » 03 Jan 2021, 20:49

Hi
My 1.6 td JX engine (fitted with intercooler) in my 1990 Syncro has died.
These are my only wheels so want to get back on the road ASAP
...

6 Replies

3338 Views

Last post by syncro garry
06 Jan 2021, 19:12
Vw golf 2.0agg with kr 16v head

Last post by silverbullet « 06 Jan 2021, 08:38
Replies: 2
by Paulf1969 » 03 Jan 2021, 20:59

Evening
Been on this forum for some time, with the intention of picking up information etc for my projects and cars🤷🏻‍♂️ But life got in the way?...

2 Replies

1979 Views

Last post by silverbullet
06 Jan 2021, 08:38
Alternative engines

Last post by Tonkatoy « 31 Dec 2020, 21:06
Replies: 4
by Tonkatoy » 10 Feb 2019, 18:55

I have a t25 panel van which is running a rover V8 3.9 engine, I have looked at the alternative engine section but cannot find any links to similar...

4 Replies

3622 Views

Last post by Tonkatoy
31 Dec 2020, 21:06
Vw t25 Westy 1.9AAZ Diesel Not starting

Last post by matt10000wba « 29 Dec 2020, 17:09
Replies: 10
by matt10000wba » 28 Dec 2020, 11:17

Hi,

Please can anyone help....nightmare morning, dropping my wife at work at the hospital...her car has no mot and the van has decided to break...

10 Replies

2614 Views

Last post by matt10000wba
29 Dec 2020, 17:09
1Y starting problems

Last post by clone123 « 28 Dec 2020, 19:54
Replies: 11
by poofit » 13 Oct 2020, 19:05

Hi all!

Long time lurker here! Recently had the van booked in for a service but they couldn't do it due to it had a fuel leak from the injection...

11 Replies

4095 Views

Last post by clone123
28 Dec 2020, 19:54
ADY hesitance and power loss.

Last post by kevtherev « 27 Dec 2020, 04:59
Replies: 12
by kevtherev » 23 Nov 2020, 00:31

Just a few niggles with my recently fitted ADY.
Rough idle, bogs under load, then at 3000rpm its all back.
New bosch Lambda, replaced with OE
MAF...

12 Replies

6076 Views

Last post by kevtherev
27 Dec 2020, 04:59
1.9 TDI Engine

Last post by peterboat « 20 Dec 2020, 18:57
Replies: 15
by peterboat » 28 Jul 2020, 23:32
1

2
I have the chance to get for free a 2006 1.9 TDI engine complete with ECU loom everything in fact, the question is how much of a pain is it to fit...
15 Replies

6412 Views

Last post by peterboat
20 Dec 2020, 18:57
1Y engine help

Last post by booted « 17 Dec 2020, 18:13
Replies: 29
by JustGavin » 17 Dec 2019, 22:30
1

2
Here goes

A good friend has fitted a 1y engine into my 87 vw caravelle. Engine was out of a 2007 vw caddy with 60000 on the clock. All filters and...
29 Replies

11433 Views

Last post by booted
17 Dec 2020, 18:13
Ahu dip stick

Last post by KOTSY « 26 Nov 2020, 16:09

by KOTSY » 26 Nov 2020, 16:09

Hi all ,I have a golf AHU 1.9 td in the back of my doka that I have had for about 5 months .
went to check the oil pulled out the stick and the...

0 Replies

3379 Views

Last post by KOTSY
26 Nov 2020, 16:09
Cosworth 2.9litre in my Crewwy

Last post by dickspanner « 23 Nov 2020, 18:28
Replies: 301
by dickspanner » 04 Jul 2006, 15:56
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17

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Hi folks

Not been on for a while but have just farmed through all V6 threads again.

I have gone and done it, I have bought the Granada Cosworth...
301 Replies

163443 Views

Last post by dickspanner
23 Nov 2020, 18:28
1z oil breather alternative or back to standard

Last post by booted « 20 Nov 2020, 17:05
Replies: 8
by T25boy71 » 15 Sep 2020, 21:02

Hi my van has had a 1Z Engine fitted way back in 2005 long before I got it, it go’s ok but has some issues the breather set up has being the first to...

8 Replies

2442 Views

Last post by booted
20 Nov 2020, 17:05
AGG Engine Conversion - Information & Assistance

Last post by booted « 20 Nov 2020, 09:07
Replies: 9
by garyd » 10 Oct 2020, 09:50

Hi Folks,
A lot of the interest in this conversion arose from the reports I posted here after doing my conversion nearly 10 years ago. At that time I...

9 Replies

4284 Views

Last post by booted
20 Nov 2020, 09:07
The good old engine debate....

Last post by mrhutch « 18 Nov 2020, 11:33
Replies: 31
by Jarvo » 09 Nov 2020, 20:16
1

2

3
Evening all,

I have tried to read as much as I can about replacing my T25 engine. Most of the posts I read tend to be a few years old, so I thought...
31 Replies

10249 Views

Last post by mrhutch
18 Nov 2020, 11:33
B reg petrol panel van to aaz temperature wiring

Last post by Aidan « 17 Nov 2020, 20:38
Replies: 1
by sefibili » 17 Nov 2020, 05:54

Hello, can anyone help with the temp sensor wiring in my early 84 b reg panel? ive put an aaz in my early b reg and its not got 2 round white 7 ish...

1 Replies

1109 Views

Last post by Aidan
17 Nov 2020, 20:38
Importing a Turbo WBX to the EU

Last post by silverbullet « 13 Nov 2020, 09:22
Replies: 4
by 90Multivan » 12 Nov 2020, 20:24

Hello All,

I'm rebuilding my 2.1 MV engine and debating weather to add a turbo kit....or use DJ pistons. To add to the criteria, I'm planning long...

4 Replies

2092 Views

Last post by silverbullet
13 Nov 2020, 09:22
1y service manual/ diagrams

Last post by rikpal « 09 Nov 2020, 04:45
Replies: 2
by rikpal » 07 Nov 2020, 10:52

Hi
I have checked wiki and the tech forum, but nothing showing.
Looking to diagnose an oil leak plus look at timing , so does anyone have a copy of a...

2 Replies

1645 Views

Last post by rikpal
09 Nov 2020, 04:45

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