T25 Alternative Engine Forum

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Last post

Whitestar 1.9TDi 1z won’t start.

Last post by randolph57 « 09 Feb 2024, 20:49
Replies: 3
by stephen t25 » 11 Nov 2023, 16:38

Afternoon all,

Jumped into the van today and it normally starts on the button every time, but today no :( no orange glow plug light, turns over but...

3 Replies

8629 Views

Last post by randolph57
09 Feb 2024, 20:49
AAZ turbo questions

Last post by ZsZ « 25 Jan 2024, 21:44
Replies: 1
by morganite » 25 Jan 2024, 19:52

Advice please, want to fit a jx exhaust manifold onto my aaz conversion engine, can i fit a aaz turbo onto the jx exhaust.manifold? because all the...

1 Replies

2275 Views

Last post by ZsZ
25 Jan 2024, 21:44
Gti conversion

Last post by Dueller « 19 Jan 2024, 21:02
Replies: 2
by Raynsford5 » 12 Sep 2023, 11:41

Hi all I'm new to all this and would love some good advice, we have bought a lovely 1980 t25 air cooled was previously a diesel but I am planning on...

2 Replies

45602 Views

Last post by Dueller
19 Jan 2024, 21:02
Antifreeze, which one?

Last post by rollercoaster « 15 Jan 2024, 18:53
Replies: 2
by rollercoaster » 15 Jan 2024, 16:24

Ok so I am laying up my Syncro,
its got an AGG, Mk3 Golf engine,
and I dont know what antifreeze to use,
guess I am a bit stupid for not remembering...

2 Replies

3846 Views

Last post by rollercoaster
15 Jan 2024, 18:53
Glow plug rail

Last post by stephen t25 « 08 Jan 2024, 21:59
Replies: 3
by stephen t25 » 08 Jan 2024, 21:36

Evening all, does anyone know what glow plug rail goes on a 1.9tdi 1Z mine has disintegrated so can’t see part no, seem the be a few different ones...

3 Replies

31480 Views

Last post by stephen t25
08 Jan 2024, 21:59
Heavy Smoking after seal change

Last post by davidoft1 « 08 Jan 2024, 15:07
Replies: 2
by glennyboy2 » 08 Jan 2024, 13:24

1986 T3 fitted with a 1Y VW 1.9 non turbo engine.
After developing a leak, I have fitted a new head seal and reassembled the Bosch injection pump.
I...

2 Replies

27920 Views

Last post by davidoft1
08 Jan 2024, 15:07
alternator clutch

Last post by davidoft1 « 06 Jan 2024, 12:19
Replies: 3
by morganite » 05 Jan 2024, 15:48

Hi could anyone recommend a vw alternator that has a built in clutch to fit on an AAZ engine to relieve the pressure on the serpentine belt? (do any...

3 Replies

18188 Views

Last post by davidoft1
06 Jan 2024, 12:19
1700 A/C engine

Last post by callyspoy « 02 Jan 2024, 17:51
Replies: 8
by callyspoy » 02 Jan 2024, 07:07

Hi folks,
Does anybody have experience of installing a 1700 type 4 engine to their T25?

I am due to remove my 2.0 CU due to a little oil leak. It...

8 Replies

6359 Views

Last post by callyspoy
02 Jan 2024, 17:51
Subaru Fuel Pump Recommendations

Last post by Nelpy « 01 Jan 2024, 15:06
Replies: 22
by Nelpy » 27 Dec 2023, 15:10
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2
Hi all,

Can anyone recommend a suitable inline fuel pump for a Subaru 3.0 H6 engine conversion? The pump has packed up and I can't identify what is...
22 Replies

16185 Views

Last post by Nelpy
01 Jan 2024, 15:06
Heater hose size

Last post by Simon Baxter « 12 Dec 2023, 10:23
Replies: 6
by T25boy71 » 24 Nov 2023, 14:48

Ok my heater hose from the cylinder head to the front heater valve has split at the cylinder head end.
Anyone know the size as the flange of the...

6 Replies

21937 Views

Last post by Simon Baxter
12 Dec 2023, 10:23
Return fuel pipe

Last post by Paigesouthern « 04 Dec 2023, 16:37

by Paigesouthern » 04 Dec 2023, 16:37

Please could someone help me, so a few week ago my car started to smoke (mk6 tdi 1.6 golf) one of the pipes keep coming off my injectors , I have...

0 Replies

46833 Views

Last post by Paigesouthern
04 Dec 2023, 16:37
Bosch Pump leaking

Last post by T25boy71 « 04 Dec 2023, 10:09
Replies: 4
by glennyboy2 » 03 Dec 2023, 09:28

1986 Leisuredrive fitted with a 1Y Diesel , year not known.
I noticed drips of diesel on the drive and traced it to the Bosch injector pump. I can’t...

4 Replies

13381 Views

Last post by T25boy71
04 Dec 2023, 10:09
Moving the slave cylinder mount aside?

Last post by Philwilgil « 28 Nov 2023, 17:55
Replies: 5
by 4gearwonder » 16 Aug 2022, 18:09

Hi all, Any help always appreciated - thanks - as we're booked to go away this Friday and suspected starter motor problem (no start or cranking -...

5 Replies

11049 Views

Last post by Philwilgil
28 Nov 2023, 17:55
Engine swap choice - future proofing.

Last post by mike.g « 23 Nov 2023, 21:44
Replies: 13
by mike.g » 29 Oct 2023, 09:54

I’m very slowly starting to think about the engine choice for my van. I have an asthmatic 1.6d with no oomph and on its last legs.

Over the last...

13 Replies

19744 Views

Last post by mike.g
23 Nov 2023, 21:44
Are belts to water pump on AAZ fitted correctly?

Last post by Middle29 « 22 Nov 2023, 09:06
Replies: 2
by Middle29 » 18 Nov 2023, 12:50

I have a mechanic doing some work and has fit belts to my AAZ in my van. He checked with Brickwerks and did his own research and has fitted belts...

2 Replies

10751 Views

Last post by Middle29
22 Nov 2023, 09:06
engine upgrade to AFN 1.9TDI

Last post by colinthefox « 21 Nov 2023, 20:40
Replies: 1
by Marktwain » 21 Nov 2023, 15:38

Been dipping into posts about engine swaps recently, as I had my venerable (read; smoky, smelly and slow) old JX replaced by an AFN 1.9 TDI and the...

1 Replies

10289 Views

Last post by colinthefox
21 Nov 2023, 20:40
Is it possible to use a mk6 golf or similar age vw accelerator pedal

Last post by charlie_chalky « 11 Nov 2023, 10:46
Replies: 3
by charlie_chalky » 10 Nov 2023, 15:41

Ive currently got the mk3 golf style throttle position sensor in the engine bay pulled via the original cable and pedal. I know people have used mk4...

3 Replies

8957 Views

Last post by charlie_chalky
11 Nov 2023, 10:46
1.9 TDI engine identification

Last post by Nistorph « 05 Nov 2023, 12:21
Replies: 9
by Nistorph » 07 Oct 2023, 18:26

Hi all,

I’m looking to change the cambelt on my 1.9tdi T25 Syncro and am struggling to identify the engine type and engine number which potentially...

9 Replies

14608 Views

Last post by Nistorph
05 Nov 2023, 12:21
Subaru conversion

Last post by J P « 07 Oct 2023, 12:33
Replies: 10
by Jilldub » 01 Oct 2023, 19:32

Sorry to bore you more experienced guys with what’s probably a common question .
I have looked for hours at several posts on here but still don’t...

10 Replies

25610 Views

Last post by J P
07 Oct 2023, 12:33
vw golf engine in to t25 wbx

Last post by Raynsford5 « 22 Sep 2023, 21:11
Replies: 13
by pete77 » 05 Mar 2016, 14:11

Hi has any body fitted a golf engine into a t25 high top? please recommend the one to go for.not after setting speed records just a reliable...

13 Replies

22626 Views

Last post by Raynsford5
22 Sep 2023, 21:11
The Superboxer, a new heart for the Silver Bullet

Last post by silverbullet « 12 Sep 2023, 18:24
Replies: 315
by silverbullet » 29 Sep 2011, 10:40
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I've been after this one for a while, ever since I heard about it. Circa 1988 the owner of a nearly new Carat Auto felt that it just wasn't quick...
315 Replies

1557677 Views

Last post by silverbullet
12 Sep 2023, 18:24
1.8 t at 50 degrees

Last post by Dueller « 11 Sep 2023, 14:26
Replies: 19
by axeman » 02 Jan 2021, 21:13
1

2
About a year ago I bought a 1.9 rhd un cut panel van. At the time I also owned a 1998 a4 1.8t one owner full service history car. With a damaged head...
19 Replies

26121 Views

Last post by Dueller
11 Sep 2023, 14:26
1.8T

Last post by tolismisis « 05 Sep 2023, 12:27
Replies: 10
by Mk2Tony » 30 Dec 2020, 10:03

Hi guys, had anyone on here attempted a 1.8T conversion on their van and have any pictures of the engine mounts, or a build thread?
Just looking at...

10 Replies

18468 Views

Last post by tolismisis
05 Sep 2023, 12:27
One for the Diesel gurus

Last post by Cecil « 03 Sep 2023, 20:55
Replies: 3
by Stesaw » 02 Sep 2023, 20:58

So, I am very green with Diesels...

Got a chap who wants an AAZ building up, I've told him that i've no real experience with them but he's OK with...

3 Replies

8769 Views

Last post by Cecil
03 Sep 2023, 20:55
Plastic impeller broke

Last post by glennada « 29 Aug 2023, 16:51
Replies: 5
by glennada » 25 Aug 2023, 15:31

Hello all,
My water pump disintegrated the other day, and the impeller broke apart while it was being driven.
Luckily it had just got home and while...

5 Replies

9201 Views

Last post by glennada
29 Aug 2023, 16:51
OBD Comms not working

Last post by Club Joker « 21 Aug 2023, 22:48
Replies: 4
by MidLifeCrisis » 13 Aug 2023, 16:59

Trying to connect obd reader to an AGG installation; The OBD connector is stashed under the dash (so I assume that this means it is probably...

4 Replies

9483 Views

Last post by Club Joker
21 Aug 2023, 22:48
MTdi 120A alternator?

Last post by ZsZ « 18 Aug 2023, 09:09

by ZsZ » 18 Aug 2023, 09:09

After my recent alternator problems I am considering to change my alternator system to a serpantine belt 120A setup. (I have Mtdi 1Z with the JX two...

0 Replies

46836 Views

Last post by ZsZ
18 Aug 2023, 09:09
2.1DJ to EJ251 Conversion - On the the road!

Last post by slowcoach « 10 Aug 2023, 12:34
Replies: 6
by ManicGTI » 16 May 2023, 20:49

I know this is nothing ground breaking these days, but thought I'd slap a few pics up in case anyone's interested...

Engine is a EJ251 from a ~60k...

6 Replies

10640 Views

Last post by slowcoach
10 Aug 2023, 12:34
Best Engine to Meet Euro 4 or 6 Emissions? ULEZ issue

Last post by ManicGTI « 04 Aug 2023, 21:36
Replies: 45
by timthemod » 13 Feb 2019, 20:03
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I have a 1987 transporter 2.1 DJ engine, camper converted ifrom a van. I live just inside the North Circular Road in London and come 2021 my van will...
45 Replies

89707 Views

Last post by ManicGTI
04 Aug 2023, 21:36
Porsche 986 2.7l in a VW T3/T25

Last post by Dueller « 04 Aug 2023, 09:15
Replies: 9
by bungleburch » 10 Jul 2023, 14:39

Okay so hear me out,

I've been gifted a 2001 986 complete car with all manor of body issues, so I thought why not?! So I'm taking it apart for parts...

9 Replies

15075 Views

Last post by Dueller
04 Aug 2023, 09:15
AAZ engine

Last post by Boerboel « 02 Jul 2023, 16:57

by Boerboel » 02 Jul 2023, 16:57

Guys-looking for some advice,had a lot of work done to my 25,it cut out due to fuel starvation twice and I don’t have the knowledge to get it...

0 Replies

46179 Views

Last post by Boerboel
02 Jul 2023, 16:57
Coolant leak issues

Last post by SurfT25 « 30 Jun 2023, 15:56
Replies: 23
by pleasestartnow » 19 Jun 2023, 14:45
1

2
Another day another question.

I have had a leaky oil sump for years now, possibly even since I first got it 10 years ago. It only leaks after the...
23 Replies

20277 Views

Last post by SurfT25
30 Jun 2023, 15:56
Is this the correct hose set?

Last post by Negativegravity « 25 Jun 2023, 17:45

by Negativegravity » 25 Jun 2023, 17:45

On our way to a campsite this weekend, a hose split between above the oil cooler. I managed to cut the split bit off, and reattach with more water...

0 Replies

45796 Views

Last post by Negativegravity
25 Jun 2023, 17:45
Am I missing a nut on the throttle mechanism?

Last post by pleasestartnow « 14 Jun 2023, 21:00
Replies: 6
by pleasestartnow » 14 Jun 2023, 12:16

I'm just doing the air, oil and fuel filter changes and I noticed on the top of my throttle mechanism it looks like I'm missing a nut? Now at the...

6 Replies

8979 Views

Last post by pleasestartnow
14 Jun 2023, 21:00
Rebuild Vs Engine Swap ?

Last post by herman_t25 « 13 Jun 2023, 09:36
Replies: 3
by herman_t25 » 12 Jun 2023, 18:07

Hi all,

so wanted so advise or opinions on what I should do with my engine. I currently have the 1.9L WBX in my van but as its coming up to its 39th...

3 Replies

8705 Views

Last post by herman_t25
13 Jun 2023, 09:36
Engine upgrade by busmiester

Last post by clift_d « 12 Jun 2023, 13:43
Replies: 11
by Marktwain » 28 May 2023, 22:22

1.6 TD in van is pushing 190k miles, still runs but starting becoming a bit precarious. So booked in for vw 1.9 tdi variable vane turbo to be fitted...

11 Replies

11598 Views

Last post by clift_d
12 Jun 2023, 13:43
JX to AGG Conversion

Last post by Spailpin Fanach « 04 Jun 2023, 17:46
Replies: 2
by Spailpin Fanach » 04 Jun 2023, 09:23

Hi all

I'm having a lot of hassle with my insurance company who refused to countenance any upgrade or conversion to my 1989 1.6TD JX T25 Westy. They...

2 Replies

8365 Views

Last post by Spailpin Fanach
04 Jun 2023, 17:46
Syncro AAZ turbo leaking oil

Last post by fh9977 « 09 May 2023, 11:40

by fh9977 » 09 May 2023, 11:40

Hi folks,
Just had the van inspected for an oil leak on coming out of the turbo. Garage said that turbo is fine but it will leak because of the way...

0 Replies

46136 Views

Last post by fh9977
09 May 2023, 11:40
Passat 1.9tdi conversion

Last post by Smudgersmith « 05 May 2023, 16:27
Replies: 6
by Smudgersmith » 05 May 2023, 07:54

Hi all i currently get 20 mpg from my 2.0 cu Aircooled engine.Wich is normal as far as i know.
But realy want to do some longer trips so with fuel...

6 Replies

9578 Views

Last post by Smudgersmith
05 May 2023, 16:27
Help with running issues 1.9 TD aaz engine in new T25 Purchase

Last post by Gavrilo « 05 May 2023, 13:35
Replies: 2
by Blix99 » 02 May 2023, 14:53

Hello. (Apologies- I posted in the wrong area. Moderation moved - thanks : )

I wonder if anyone has any advice or experience with the 1.9 AAZ,...

2 Replies

9439 Views

Last post by Gavrilo
05 May 2023, 13:35
Fitting Wolfy Exhaust

Last post by ELVIS « 22 Apr 2023, 12:04
Replies: 7
by MidLifeCrisis » 16 Apr 2023, 21:37

Hoping for a little sanity check before I decide to just add spacers;
I am fitting a wolfy exhaust to an AGG engine;
The left and right exhaust...

7 Replies

11560 Views

Last post by ELVIS
22 Apr 2023, 12:04
1Z timing belt change interval

Last post by davidoft1 « 08 Apr 2023, 17:08
Replies: 4
by ZsZ » 03 Apr 2023, 09:25

I am in a dilemma. As per title. To change or not to change? Last change was done 5 yrs and ~40k kms ago. Before I read a 5yr 60k kms interval...

4 Replies

9416 Views

Last post by davidoft1
08 Apr 2023, 17:08
New engine needed

Last post by Aidan « 04 Apr 2023, 07:10
Replies: 5
by Spailpin Fanach » 02 Apr 2023, 12:53

I haven't been on here for several months since my beloved 1989 VW 1.6TD JX T25 Westfalia mistook in T in T25 for Tea, boiled and cracked the...

5 Replies

9691 Views

Last post by Aidan
04 Apr 2023, 07:10
Fuel leak diesel

Last post by ELVIS « 31 Mar 2023, 22:54
Replies: 14
by T25boy71 » 07 Mar 2023, 15:20

Engine is 1Z fuel pump mechanical of what I have no idea
Any advice very welcome

14 Replies

17985 Views

Last post by ELVIS
31 Mar 2023, 22:54
Engine hatch cutting

Last post by silverbullet « 28 Mar 2023, 07:19
Replies: 9
by glennada » 17 Mar 2023, 18:25

Hello all,
Stupid questions follow...

I hear that if you install an AAZ into t25 the you have to cut the engine hatch.
Can the engine mounts not...

9 Replies

15140 Views

Last post by silverbullet
28 Mar 2023, 07:19
1.9 Diesel 1Y exhaust

Last post by ajsimmo « 12 Mar 2023, 11:04
Replies: 4
by Sammyd » 11 Mar 2023, 13:06

Any advice on what exhaust to use on a 1Y engine conversion?

The exhaust fitted by previous owner is incredibly loud!!

I’m not expecting quiet out...

4 Replies

8451 Views

Last post by ajsimmo
12 Mar 2023, 11:04
engine

Last post by mrhutch « 07 Mar 2023, 21:31
Replies: 4
by blackhawk » 07 Mar 2023, 21:01

Hi all need your help, have a 1.9 diesel engine fitted to my camper, but not sure which engine it is & cannot find an engine number anywhere on it,...

4 Replies

8526 Views

Last post by mrhutch
07 Mar 2023, 21:31
Buying an AHU Engine. What to look for.

Last post by Al Housman « 02 Feb 2023, 19:18

by Al Housman » 02 Feb 2023, 19:18

A bit late this but I'm going to look at an AHU engine in a Mk3 Golf tomorrow. It has about 100k on it whch is born out by its MOT history.
Apart...

0 Replies

45105 Views

Last post by Al Housman
02 Feb 2023, 19:18
AVB engine from a 2002 A4?

Last post by Aidan « 02 Feb 2023, 08:15
Replies: 1
by FifeBay » 01 Feb 2023, 19:50

Hello, I’m new to the forum and picking up a T25 Doka at the weekend. It’s a 1988 with a 1.6JX engine which is seized and potentially completely...

1 Replies

7841 Views

Last post by Aidan
02 Feb 2023, 08:15
so c'mon, is the AAZ conversion worth it?

Last post by davidoft1 « 08 Jan 2023, 18:41
Replies: 29
by charlie brown syndrome » 14 Jul 2010, 20:46
1

2
hi all,

right,
ive recently bought a van and after mulling through the different information ive decided to go for the AAZ conversion, mainly...
29 Replies

54999 Views

Last post by davidoft1
08 Jan 2023, 18:41

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