T25 Alternative Engine Forum

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Last post

Petrol Alternative Engines...

Last post by silverbullet « 06 Apr 2024, 16:09
Replies: 10
by HarryMann » 15 Oct 2005, 01:57

Subaru Engine Types and Options

The normally aspirated (NA) flat 4's weigh about the same as a WBX and after installation there's always a cleaner...

10 Replies

58354 Views

Last post by silverbullet
06 Apr 2024, 16:09
Diesel Alternative Engines..... Read before asking questions

Last post by sdelasal « 09 Aug 2008, 22:43
Replies: 18
by admin » 13 Oct 2005, 09:35
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VW are renowned for their diesels and those fitted as standard to the T25 do not do it justice. What can you replace them with to getting better...
18 Replies

91528 Views

Last post by sdelasal
09 Aug 2008, 22:43
Exhaust falling off

Last post by silverbullet « 23 Apr 2025, 18:07
Replies: 4
by therealchrisgray » 23 Apr 2025, 10:40

Hi all, I could use some opinions so I'm not completely at the mercy of a mechanic.

Exhaust started blowing yesterday on a motorway run. I've done...

4 Replies

134 Views

Last post by silverbullet
23 Apr 2025, 18:07
VCDS Fault code deciphering AHU TDI

Last post by hotpod « 23 Apr 2025, 09:35

by hotpod » 23 Apr 2025, 09:35

I know why the vehicle speed signal is wrong and what I need to fix it but the ECU memory error is troubling and can anyone tell me what the...

0 Replies

44 Views

Last post by hotpod
23 Apr 2025, 09:35
1Y coolant pipes/system

Last post by colinthefox « 20 Apr 2025, 19:49
Replies: 11
by BarnyE » 30 Mar 2025, 14:20

Hi all, my van has had a 1Y engine swap in the past. Whoever swapped it seemed to have ran out of enthusiasm once the got to the coolant system and...

11 Replies

842 Views

Last post by colinthefox
20 Apr 2025, 19:49
Engine Swap

Last post by Dueller « 18 Apr 2025, 11:41
Replies: 6
by Tattersall » 14 Jan 2025, 03:13

Hi I really want to build a camper and I've seen a few t3s with broken engines. If I buy a 2.1 that has no engine in. What would be easies/best for a...

6 Replies

6780 Views

Last post by Dueller
18 Apr 2025, 11:41
Alternators.. inline 4 engines

Last post by Dueller « 18 Apr 2025, 11:31
Replies: 6
by t25adict » 08 Apr 2025, 15:24

Would anyone know which engines VW Seat Audi used the alternator with the big spring under it.

It's the ones that bolt up for belt tension, but you...

6 Replies

583 Views

Last post by Dueller
18 Apr 2025, 11:31
Diesel Engine Code Location

Last post by T25boy71 « 11 Apr 2025, 09:26
Replies: 6
by The Hairy Camper » 06 Apr 2025, 18:54

I was struggling to find the engine code on my 1Y today.

From what I can tell on the forum, it's meant to be in this location:

I couldn't see...

6 Replies

458 Views

Last post by T25boy71
11 Apr 2025, 09:26
AHU TDI Vibration Damper Pulley testing

Last post by hotpod « 05 Apr 2025, 10:52
Replies: 7
by hotpod » 31 Mar 2025, 15:29

Does anyone know how to test if the vibration damper pulley ( harmonic balancer) on the crank shaft is in good shape?
Mine drives the ribbed...

7 Replies

773 Views

Last post by hotpod
05 Apr 2025, 10:52
Leaking Cooling Pipe Replacement

Last post by Jdavis « 21 Mar 2025, 15:59
Replies: 3
by Jdavis » 04 Mar 2025, 08:49

Hello all. New to the site and to T25 ownership.

I have a 1982 T25 Camper with a refurbished 2l Golf engine. The coolant pipe has a big leak and I'm...

3 Replies

5942 Views

Last post by Jdavis
21 Mar 2025, 15:59
AEF (1.9D) engine, troubleshooting advice pls

Last post by therealchrisgray « 17 Mar 2025, 11:03
Replies: 7
by therealchrisgray » 15 Mar 2025, 09:38

Finally collected my van yesterday with its new old AEF engine. All seemed good at first, but then...

Pootling along, at any speed, I get an...

7 Replies

7635 Views

Last post by therealchrisgray
17 Mar 2025, 11:03
little advice pls

Last post by JeffRoo « 13 Mar 2025, 20:08
Replies: 17
by fh9977 » 04 Nov 2024, 12:05
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Hi, just need some advice on what I do with my syncro...

A few weeks ago I had a breakdown, diesel pump had ceased. Pump was refurbished,...
17 Replies

13091 Views

Last post by JeffRoo
13 Mar 2025, 20:08
engine change from jx to 1z

Last post by Oren Kipnis « 12 Mar 2025, 19:14
Replies: 1
by rossin84 » 10 Mar 2025, 08:15

good morning everyone, I am writing from Sicily (Italy), my multivan t3 bluestar 1.6 td jx has a blown engine, unfortunately it cannot be fixed and I...

1 Replies

4399 Views

Last post by Oren Kipnis
12 Mar 2025, 19:14
New engine

Last post by therealchrisgray « 01 Mar 2025, 13:38
Replies: 10
by therealchrisgray » 12 Feb 2025, 15:53

Hello all, I need some pretty basic advice and hoping one of you lovely people can help.

My unidentified old diesel engine turned out to be a 1Y...

10 Replies

7614 Views

Last post by therealchrisgray
01 Mar 2025, 13:38
New van with cologne v6 engine

Last post by Dueller « 28 Feb 2025, 17:30
Replies: 47
by Cableguy » 27 Jun 2010, 17:55
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Hi, I'm a newbie to this forum and also to the t25.
I've just bought a camper with an old school 2.8 cologne engine in it.
As soon as I turned the...
47 Replies

42074 Views

Last post by Dueller
28 Feb 2025, 17:30
EJ20E Lambda Wiring.

Last post by JackJosh « 07 Feb 2025, 21:34
Replies: 4
by JackJosh » 20 Jan 2025, 14:33

Hi All,

I was looking for some advice, if possible.
I have a VW T3 van and it has an EJ20e fitted. It also has an LPG system that I am unlikely to...

4 Replies

6104 Views

Last post by JackJosh
07 Feb 2025, 21:34
Jx flywheel on 1Y block

Last post by curtainsider « 28 Jan 2025, 17:55
Replies: 2
by curtainsider » 28 Jan 2025, 16:26

Hello all’

Can someone remind me if I need to re-mark my JX flywheel to TDC when fitted to a 1y or AAZ. Engine currently out of van with Jx...

2 Replies

5142 Views

Last post by curtainsider
28 Jan 2025, 17:55
Can a 1Y inlet manifold be modified to fit

Last post by colinthefox « 27 Jan 2025, 20:21
Replies: 3
by VwDanT25 » 04 Oct 2024, 19:20

Hi

completed a 1Y swap but using a turbo inlet manifold for the time being, the 1Y inlet mf wont fit due to hitting the bay wall.
has anyone...

3 Replies

6444 Views

Last post by colinthefox
27 Jan 2025, 20:21
Subaru ez30d h6, 4eat auto gearbox in a coachbuild

Last post by jamiegolf « 15 Jan 2025, 10:19
Replies: 61
by jamiegolf » 15 Oct 2023, 08:48
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Hey all,
After running around for a year with the ej20 and aap box (that’s been absolutely perfect btw!!) I feel it just needs. Little more oomph!!...
61 Replies

193605 Views

Last post by jamiegolf
15 Jan 2025, 10:19
No water temperature reading

Last post by slowcoach « 02 Jan 2025, 13:38
Replies: 3
by boxerairhead » 28 Dec 2024, 17:41

I've recently bought a T25 with an EJ20 engine in it. It all works and drives fine except the water temperature gauge doesn't work.
So far i've done...

3 Replies

6463 Views

Last post by slowcoach
02 Jan 2025, 13:38
Help on a Essex V6

Last post by TwinTurbo « 25 Nov 2024, 21:30
Replies: 11
by MyBlueT25 » 25 Nov 2024, 16:40

I have a 81 tintop with a v6 essex and struggling to get it started, ive replaced pretty much everything to do with spark and fuel except the...

11 Replies

9894 Views

Last post by TwinTurbo
25 Nov 2024, 21:30
Clutch Rattle

Last post by silverbullet « 10 Oct 2024, 14:36
Replies: 3
by BigBlueVan » 01 Oct 2024, 19:25

Hi All,

I have been trying to get my clutch to release on my conversion, ej20 engine, RJES bellhousing and release bearing, VW clutch disc....

3 Replies

6079 Views

Last post by silverbullet
10 Oct 2024, 14:36
Alternator/water pump drive belt - adjustment

Last post by Bison535 « 06 Oct 2024, 03:08
Replies: 7
by Bison535 » 04 Oct 2024, 02:27

Hi 80-90 guys
There always seems a need to make adjustment to the tension of my drive vee belt ! Once I hear a squeal I know it needs adjustment...

7 Replies

6940 Views

Last post by Bison535
06 Oct 2024, 03:08
Injector Flame Traps

Last post by johnxl « 04 Oct 2024, 22:23
Replies: 6
by johnxl » 03 Sep 2024, 14:09

Where on the injector should a flame trap seat? against the injector body or on the injector nozzle? The reason why I ask is because while checking...

6 Replies

7162 Views

Last post by johnxl
04 Oct 2024, 22:23
turbo hose

Last post by skell « 19 Sep 2024, 22:27
Replies: 1
by morganite » 22 Jul 2024, 16:01

Hi on last leg of aaz conversion, i need a hose to go from jx turbo to aaz inlet manifold, anyone know where to find one? or even better the part no...

1 Replies

5395 Views

Last post by skell
19 Sep 2024, 22:27
aaz pump repair

Last post by skell « 19 Sep 2024, 22:22
Replies: 1
by morganite » 12 May 2024, 18:51

Hi can anyone recommend a reasonable diesel injection pump engineering shop, to test and maybe repair, my 0460494346 injection pump to go on my AAZ...

1 Replies

5681 Views

Last post by skell
19 Sep 2024, 22:22
Clutch problems

Last post by Aidan « 19 Sep 2024, 18:29
Replies: 3
by Nelpy » 17 Sep 2024, 21:04

Hi

I’ve been having clutch problems for a while now - pedal going hard then soft, pedal moving up and down against my foot, clutch slipping,...

3 Replies

6236 Views

Last post by Aidan
19 Sep 2024, 18:29
Identifying engine

Last post by therealchrisgray « 17 Sep 2024, 10:49
Replies: 9
by therealchrisgray » 07 Sep 2024, 11:09

Hi all, my google skills are obviously not up to this but thankfully this forum is full of knowledgable people...

My old van had an engine...

9 Replies

7794 Views

Last post by therealchrisgray
17 Sep 2024, 10:49
EJ Subaru Engine - Fuel Breather Line

Last post by BigBlueVan « 14 Sep 2024, 20:14
Replies: 3
by BigBlueVan » 13 Sep 2024, 05:36

Hi All,

What have others done with the fuel breather line on their Subaru conversions?
The EJ engine has fuel feed, return and breather...

3 Replies

5978 Views

Last post by BigBlueVan
14 Sep 2024, 20:14
EJ Subaru Engine, vacuum non return valve

Last post by slowcoach « 08 Sep 2024, 22:07
Replies: 3
by BigBlueVan » 08 Sep 2024, 14:01

Hi All,

Original van engine 1.9dg had a one way valve on the vacuum line at the engine.
The Subaru EJ engine removed from donor vehicle did not have...

3 Replies

6014 Views

Last post by slowcoach
08 Sep 2024, 22:07
N108 valve 1.9TDI MK3

Last post by Aidan « 07 Sep 2024, 16:03
Replies: 2
by Iwallace » 07 Sep 2024, 09:00

Hi all.

My n108 valve on my mk3 1998 1.9TDI engine has been playing up for months now.
Has been repaired once but the wires keep coming loose with...

2 Replies

5598 Views

Last post by Aidan
07 Sep 2024, 16:03
Diesel leaking from pump?

Last post by ZsZ « 07 Sep 2024, 14:33
Replies: 5
by Jezzerisin » 04 Sep 2024, 19:51

Having recently posted about my electric problems..
Things got worse!
Driving on a Spanish motorway, the throttle stuck open, full speed!!
Couldn't...

5 Replies

6576 Views

Last post by ZsZ
07 Sep 2024, 14:33
Oil buzzer at end of long drive

Last post by Middle29 « 04 Sep 2024, 15:19
Replies: 7
by Middle29 » 02 Sep 2024, 11:33

Hi all,

Drove back from Devon yesterday 255 miles. The buzzer went off pulling into the services, sharp left turn decelerating about half way back....

7 Replies

7655 Views

Last post by Middle29
04 Sep 2024, 15:19
The T3200E thread

Last post by silverbullet « 01 Sep 2024, 18:15
Replies: 460
by silverbullet » 12 Aug 2018, 16:03
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Aka an Oettinger wbx-6 3.2 that found me by chance and collected on the way to T3Busmeet. I wasnt even looking for one! So many details that you've...
460 Replies

915434 Views

Last post by silverbullet
01 Sep 2024, 18:15
WBX combustion chamber cc checks

Last post by silverbullet « 01 Sep 2024, 15:08
Replies: 22
by silverbullet » 18 Feb 2016, 20:59
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I have been meaning to do these measurements for a while as part of doing some static compression ratio calcs, finally got around to it and they...
22 Replies

28263 Views

Last post by silverbullet
01 Sep 2024, 15:08
aaz which alternator

Last post by morganite « 19 Aug 2024, 17:49

by morganite » 19 Aug 2024, 17:49

Hi just finished my type 25 AAZ conversion, with the aaz crank and serpentine pulley,i want to fit an alternator with a clutched pulley to eliminate...

0 Replies

5819 Views

Last post by morganite
19 Aug 2024, 17:49
AAZ Water pump belt JX

Last post by Stesaw « 19 Aug 2024, 13:04
Replies: 10
by Stesaw » 13 Aug 2024, 00:15

Ok so, got a chap with an AAZ engine build thats had everything off a 1.6 TD put on it.. his old 1.6 engine as far as i know was out of a passat...

10 Replies

7578 Views

Last post by Stesaw
19 Aug 2024, 13:04
Engine

Last post by futureW « 14 Aug 2024, 00:43

by futureW » 14 Aug 2024, 00:43

Hello! I have a problem with the starting motor on a JX to AAZ engine conversion.
JX flywheel, JX Starting motor, AAZ engine.
When I tighten the two...

0 Replies

5837 Views

Last post by futureW
14 Aug 2024, 00:43
Which engine?

Last post by Aidan « 09 Aug 2024, 17:56
Replies: 5
by Noclue » 07 Aug 2024, 11:22

Hi everyone.

I have a T25 High Top 1985 1.6TD, left hand drive van. I am looking at replacing the existing engine as i have been told by my mechanic...

5 Replies

6347 Views

Last post by Aidan
09 Aug 2024, 17:56
ECU set up and Subaru select monitor 1 Bristol

Last post by mariner « 09 Aug 2024, 15:24
Replies: 2
by mariner » 07 Aug 2024, 16:47

This is my ecu set up in my van.

I’m trying to work out how to use it! The image in the instructions I have show the OBD socket (yellow), two...

2 Replies

5526 Views

Last post by mariner
09 Aug 2024, 15:24
EJ20- stalling at junctions ??

Last post by mariner « 31 Jul 2024, 20:58
Replies: 10
by matt brighton » 26 Oct 2018, 08:59

Hi

Apparently a common niggle mentioned on subary forums -

throwing up the no 24 fault code - open circuit/bad IACV (idle air control valve)...

10 Replies

10655 Views

Last post by mariner
31 Jul 2024, 20:58
Stuck on a campsite with no engine start

Last post by mariner « 31 Jul 2024, 15:07
Replies: 8
by mariner » 29 Jul 2024, 11:45

Hi all. We’ve found ourselves stuck on a campsite with a van that won’t start.

Drove a 100 miles here no probs having just had oil + filter change...

8 Replies

7679 Views

Last post by mariner
31 Jul 2024, 15:07
1.9AAZ OR MK5 TDi?

Last post by ZsZ « 30 Jul 2024, 11:40
Replies: 2
by Sco77w » 29 Jul 2024, 17:44

Looking for a bit of advice.
I have an “84 T25 that started life as a petrol powered van but I took it on as an unfinished project. As many projects...

2 Replies

6123 Views

Last post by ZsZ
30 Jul 2024, 11:40
Air filter on aaz conversion

Last post by lefty67 « 21 Jul 2024, 14:00
Replies: 4
by morganite » 20 Jul 2024, 15:55

Hi, on the last leg of my aaz conversion from jx 1.6, trying to mount the original jx cylinder air filter the brickwerks way,but it sits on top of...

4 Replies

5998 Views

Last post by lefty67
21 Jul 2024, 14:00
1988 diesel transporter looking for a new engine.

Last post by justinjgreenaway « 19 Jul 2024, 06:03
Replies: 2
by justinjgreenaway » 18 Jul 2024, 21:11

Hi Guys.

Anyone know if the diesel Subaru Impreza GR GH 2.0 D AWD Diesel EE20 EE20Z 150 PS is the correct engine to drop into t25 1988?

Trying to...

2 Replies

5433 Views

Last post by justinjgreenaway
19 Jul 2024, 06:03
Recommendations and request for JX replacement

Last post by Rich Mc « 11 Jul 2024, 08:30

by Rich Mc » 11 Jul 2024, 08:30

Hi all,

my 1.6td JX engine has head gasket issues and I've been recommended to have the engine replaced.
I tinker but this kind of work is beyond...

0 Replies

5648 Views

Last post by Rich Mc
11 Jul 2024, 08:30
Gearbox help

Last post by silverbullet « 09 Jul 2024, 21:32
Replies: 2
by Pedrobus » 08 Jul 2024, 14:26

Hi guys n gals .

I've got a gti lump in my t 25.
Seems like I need a new gearbox as the old 5 speed is worn and whinning in 1st and 2nd.

Which...

2 Replies

5573 Views

Last post by silverbullet
09 Jul 2024, 21:32
AAZ turbo clearance + vgt?

Last post by silverbullet « 26 Jun 2024, 16:58
Replies: 8
by chalkywoods » 08 Jun 2024, 09:49

The custom engine mount bracket on my AAZ fitted by previous owner is looking worse for wear so I was planning on fitting an original JX...

8 Replies

7374 Views

Last post by silverbullet
26 Jun 2024, 16:58
Automatic gearbox to Manual gearbox swap Flipped Audi box

Last post by Dueller « 24 Jun 2024, 20:08
Replies: 10
by Dueller » 27 May 2024, 19:30

...and here we go again

Time for another thread on my next evolution here, swapping out the porsche auto from my caravelle and fitting a flipped...

10 Replies

7687 Views

Last post by Dueller
24 Jun 2024, 20:08
Replacement intake/throttle seal

Last post by Nelpy « 24 Jun 2024, 19:55
Replies: 2
by Nelpy » 24 Jun 2024, 18:37

One for the Subaru people

I'm looking for a new seal for where the air intake attaches to the throttle body as pictured. It is a 2001 Legacy H6...

2 Replies

5455 Views

Last post by Nelpy
24 Jun 2024, 19:55

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