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
1y identification	colinthefox	Today, 10:24	Once this week	T25 Alternative Engine Forum

Topics

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Last post

AAZ with Jx flywheel clutch size options? Upgrade

Last post by HarryMann « 09 Jul 2014, 12:13
Replies: 9
by VWGeoff » 03 Jul 2014, 16:23

Hi
Can anyone advise me on how I upgrade from a JX clutch to a stronger clutch as this one only lasted 1700 miles? what are my options? Can I fit a...

9 Replies

3343 Views

Last post by HarryMann
09 Jul 2014, 12:13
Waterpump issues

Last post by HarryMann « 09 Jul 2014, 12:05
Replies: 11
by buzzeditor » 30 Jun 2014, 20:47

I've got a T25 with the 1.9 turbodiesel AAZ conversion, and I noticed a few drops of water under the back end tonight.

So I got underneath and...

11 Replies

2126 Views

Last post by HarryMann
09 Jul 2014, 12:05
Turbo question

Last post by HarryMann « 09 Jul 2014, 11:55
Replies: 8
by dekhelia » 01 Jul 2014, 18:58

After reading on here the various posts that have concluded with a failed or failing turbo diagnosis, I've decided I have a similar problem (oil in...

8 Replies

2778 Views

Last post by HarryMann
09 Jul 2014, 11:55
AAZ conversion Spigot bearing - How much to fit?

Last post by evantis121 « 09 Jul 2014, 10:04
Replies: 8
by evantis121 » 06 Jul 2014, 14:16

Hi,

My AAZ engined T25 is suffering from serious juddering unless you get the clutch just right. Its getting on my nerves and I read somewhere that...

8 Replies

3742 Views

Last post by evantis121
09 Jul 2014, 10:04
VW 1.9 tdi engine (110 bhp - PD I think)

Last post by HarryMann « 09 Jul 2014, 09:16
Replies: 3
by SplendiferousII » 08 Jul 2014, 18:26

Not T25 related but.

I have a seat Toledo (51 plate) with a 1.9 tdi engine fitted. Its been a proper pain in the a*** but for the past year its...

3 Replies

2906 Views

Last post by HarryMann
09 Jul 2014, 09:16
need wiring diagram for subaru ej20 1998

Last post by silverbullet « 09 Jul 2014, 07:45
Replies: 1
by paulbrown84b » 08 Jul 2014, 20:51

hey peeps

doin a conversion on my 1986 t25 to a 2.0 ej20 1998 and wondering if n e of you have wiring diagrams for this

1 Replies

1344 Views

Last post by silverbullet
09 Jul 2014, 07:45
AGR Engine Swap

Last post by Dino « 08 Jul 2014, 14:58
Replies: 10
by Dino » 01 Jul 2014, 06:40

Hi folks,
I've got a donor vehicle - Octavia 1.9tdi, Engine code AGR - to upgrade my CS 1.6D non turbo engine from a 1986 t3 camper. I've been...

10 Replies

5007 Views

Last post by Dino
08 Jul 2014, 14:58
Oil capacity VW SB 1.6td engine

Last post by HarryMann « 08 Jul 2014, 09:33
Replies: 3
by Candyred89 » 26 Jun 2014, 21:52

Hi, can anyone advise me what capacity of oil my SB code Golf GTD engine will take, it's got a T25 sump on it.
Any info greatly received.
:ok

3 Replies

2616 Views

Last post by HarryMann
08 Jul 2014, 09:33
Help ref diesel injection pump on 1Y conversion

Last post by Oldiebut goodie « 06 Jul 2014, 21:24
Replies: 1
by Jetfitzmaurice » 06 Jul 2014, 13:05

Hi, I'm in week 3 of my 1.6cs to 1Y engine conversion, I'm just about to bolt the 1Y back in (new clutch, water & oil pump, cam & crank seals etc)...

1 Replies

1127 Views

Last post by Oldiebut goodie
06 Jul 2014, 21:24
Petrol to TDI

Last post by KINGPRAWN « 02 Jul 2014, 22:04
Replies: 38
by KINGPRAWN » 13 May 2014, 16:22
1

2

3
Going from a 2.1dj to a TDI ... Will I NEED a diesel tank .. Will I NEED diesel clocks ??
38 Replies

9487 Views

Last post by KINGPRAWN
02 Jul 2014, 22:04
Aaz cooling system

Last post by skell « 29 Jun 2014, 19:21
Replies: 6
by Dynamite-dindin » 04 Jun 2014, 20:03

Hi was just wondering I'm trying to bleed my cooling system and not having much luck only able to get a few litres of coolant in it. From what I have...

6 Replies

3527 Views

Last post by skell
29 Jun 2014, 19:21
Service kit following engine conversion

Last post by VWMartin « 29 Jun 2014, 18:15
Replies: 6
by VWMartin » 23 Jun 2014, 20:29

Hi guys my T25 has had a 1z engine conversion and I'm finding it hard to source service parts with just the engine number.

Anyone know where is...

6 Replies

1692 Views

Last post by VWMartin
29 Jun 2014, 18:15
whats the best subaru diesel for a t25

Last post by keith « 28 Jun 2014, 16:41
Replies: 2
by tdm2 » 28 Jun 2014, 16:38

whats the best subaru diesel engine to put into a t25

2 Replies

1420 Views

Last post by keith
28 Jun 2014, 16:41
aaz hybrid flywheel

Last post by bobby-gg « 24 Jun 2014, 06:37
Replies: 5
by t25driver » 24 May 2014, 10:25

Does anyone sell an aaz jx conversion hybrid flywheel ready to bolt on 228mm clutch fitment and what clutch fits
Maybe needed in the future for a...

5 Replies

2126 Views

Last post by bobby-gg
24 Jun 2014, 06:37
Install Engin Diesel T4 On T3

Last post by toomanytoys « 22 Jun 2014, 20:15
Replies: 12
by ali 254 » 17 Jun 2014, 16:17

hi
Can be Install Engine Diesel T4 On The T3?
Thanks...

12 Replies

4703 Views

Last post by toomanytoys
22 Jun 2014, 20:15
Late or early aaz?

Last post by Bigjcc55 « 17 Jun 2014, 21:18
Replies: 2
by Bigjcc55 » 16 Jun 2014, 19:19

How do I tell whether I have an early or late? I finally want to fit the correct fuel pump and would like to change the timing belt whilst I'm at it...

2 Replies

1509 Views

Last post by Bigjcc55
17 Jun 2014, 21:18
high idle when engine warm, gti k jet

Last post by Time Bomb Tom « 16 Jun 2014, 09:21
Replies: 6
by Time Bomb Tom » 27 May 2014, 09:30

Hi my engine is ticking over high when the engine is warm about 1500 to 2000, if i blip the throttle it will sometimes drop back down to 950 any...

6 Replies

1889 Views

Last post by Time Bomb Tom
16 Jun 2014, 09:21
Diesel to td or tdi? What upgrade have you done?

Last post by waltraud « 14 Jun 2014, 17:10
Replies: 18
by Barbarella » 10 May 2014, 09:03
1

2
Hi all,
We have a 1.6 diesel and want to an upgrade but can't decide whether to go td or tdi. Wanted to know what others have had and the reason for...
18 Replies

6573 Views

Last post by waltraud
14 Jun 2014, 17:10
Installing the 1.6 diesel engine

Last post by ali 254 « 13 Jun 2014, 19:28
Replies: 58
by ali 254 » 04 Jun 2014, 13:07
1

2

3

4
Hi, I'm a T-3 Model 1981.
I have decided to replace the engine, resulting in a 1.6 diesel engine found; want to buy;

So, I have a few questions:...
58 Replies

17925 Views

Last post by ali 254
13 Jun 2014, 19:28
T25 SUBARU BACKBOX

Last post by sciroccotune « 11 Jun 2014, 13:49
Replies: 1
by nathand2r » 08 Jun 2014, 20:17

Hi guys, but of a long shot but I've got this backbox on my t25 subaru ej20 and it obviously needs replacing.. I think it's off an Audi? It got...

1 Replies

1203 Views

Last post by sciroccotune
11 Jun 2014, 13:49
Donor car marked D or SDi does it matter which?

Last post by Jetfitzmaurice « 10 Jun 2014, 19:46
Replies: 5
by Jetfitzmaurice » 10 Jun 2014, 11:10

Hi, I'm looking at a 1y engine transplant for my new Doka that has a very dead 1.6 lump in at the moment. Does it matter if the donor vehicle is...

5 Replies

2057 Views

Last post by Jetfitzmaurice
10 Jun 2014, 19:46
Subaru installers and questions

Last post by Smiffo « 09 Jun 2014, 16:06

by Smiffo » 09 Jun 2014, 16:06

Afternoon all.

After my recent purchase, and a bit of jiggery pokery with some wiring etc, my attention has turned to the more meaty aspects of the...

0 Replies

1057 Views

Last post by Smiffo
09 Jun 2014, 16:06
1.9 aaz engine rebuild

Last post by Funbus « 07 Jun 2014, 20:37
Replies: 47
by Funbus » 03 Dec 2013, 16:35
1

2

3

4
Hi all. I've had my van 3 weeks and decided to strip and rebuild the engine. I thought I'd start a thread for the whole thing rather than clog the...
47 Replies

23655 Views

Last post by Funbus
07 Jun 2014, 20:37
Low Mileage AGG Engined Golf GTI

Last post by jes*b « 05 Jun 2014, 11:06

by jes*b » 05 Jun 2014, 11:06

Hi, putting a link in here incase you don't often look in cars for sale section. cheers jes

onclick= window.open(this.href);return false;

0 Replies

993 Views

Last post by jes*b
05 Jun 2014, 11:06
1Y head on an AAZ

Last post by steve_hi11 « 03 Jun 2014, 13:33

by steve_hi11 » 03 Jun 2014, 13:33

Has anyone tried putting a 1Y head on an AAZ - both 1.9 diesels?

Thought I read a post a while back but can't remember when where???

thanks

steveh

0 Replies

1001 Views

Last post by steve_hi11
03 Jun 2014, 13:33
Tdi Input Shaft/Flywheel

Last post by Aidan « 01 Jun 2014, 07:21
Replies: 3
by ELVIS » 31 May 2014, 08:11

Breaking a van at the mo and the owner did mention something about Benrd Jaegar Flywheel being recently fitted, he didnt know what as he paid someone...

3 Replies

1532 Views

Last post by Aidan
01 Jun 2014, 07:21
AAZ Turbo oil return - Block or sump?

Last post by bobby-gg « 30 May 2014, 21:12
Replies: 6
by dcfb77 » 30 May 2014, 11:52

Hi, still getting a bit oil in the inlet so going to redo turbo oil return.

Turbo is higher than standard due to custom exhaust manifold. I'm...

6 Replies

2780 Views

Last post by bobby-gg
30 May 2014, 21:12
12 bhp increase?

Last post by lloydy « 30 May 2014, 15:33
Replies: 11
by dave friday » 09 Apr 2014, 12:53

Afternoon all,what sort of difference is 12 bhp increase going to make? ( torque coming in at 2400rpm ).
Ta.

11 Replies

2984 Views

Last post by lloydy
30 May 2014, 15:33
Alfa Romeo boxer engine?

Last post by faggie « 29 May 2014, 11:35
Replies: 6
by CJH » 05 May 2014, 10:29

I'm asking out of curiosity, rather than out of any serious intention to do a swap, but has anybody used one of the Alfa boxer engines in a T25? As a...

6 Replies

5664 Views

Last post by faggie
29 May 2014, 11:35
Help! Big ends gone on restoration project whats the best op

Last post by Oldiebut goodie « 29 May 2014, 07:35
Replies: 3
by alexnorwich » 28 May 2014, 22:10

Hello,

I was really hoping someone on here could help me as I have looked into all sorts of options now and don't know what would be the best and...

3 Replies

1289 Views

Last post by Oldiebut goodie
29 May 2014, 07:35
Looking after GTi engine in T25

Last post by Mark Inder « 29 May 2014, 05:40
Replies: 5
by Mark Inder » 27 May 2014, 07:53

I have very recently bought another T25. Unlike my previous one, it does not have a standard engine. This time it has a reconditioned 16v engine...

5 Replies

2561 Views

Last post by Mark Inder
29 May 2014, 05:40
Aaz owners in Wiltshire

Last post by Dynamite-dindin « 27 May 2014, 20:24

by Dynamite-dindin » 27 May 2014, 20:24

Hi all is there anyone local or in Wiltshire with a Aaz engine setup.

0 Replies

818 Views

Last post by Dynamite-dindin
27 May 2014, 20:24
Air Bubbles in fuel line

Last post by bobby-gg « 26 May 2014, 07:37
Replies: 5
by peteabbott » 24 May 2014, 22:37

Right then........since fitting the 1Y engine getting on for four years ago not once have I had a problem on starting. THEN last week she turned over...

5 Replies

2728 Views

Last post by bobby-gg
26 May 2014, 07:37
Agg conversion - how much loom to take?

Last post by Titus A Duxass « 25 May 2014, 18:08
Replies: 1
by waltraud » 25 May 2014, 08:07

Hi, am pondering whether to but a mk3 golf 8v for the agg or engine and loom/ecu etc only. Q is, when removing loom does that literally mean...

1 Replies

1061 Views

Last post by Titus A Duxass
25 May 2014, 18:08
Diesel Engine bars -which do I have/need?

Last post by ZsZ « 25 May 2014, 17:18
Replies: 1
by mig » 25 May 2014, 13:50

I have decided to bite the bullet and replace my dead 32 year old 1.9 wbx with a 1.6 SB diesel.
First of no doubt many questions,
I have an 1982 van...

1 Replies

1096 Views

Last post by ZsZ
25 May 2014, 17:18
AGG conversion Clutch arm for diesel bellhousing

Last post by max and caddy « 23 May 2014, 22:53
Replies: 4
by waltraud » 17 May 2014, 20:56

I read something about a heavy duty clutch arm for a diesel bellhousing? Im going dg to gti so will put a diesel bellhousing on my dt gearbox. Wich...

4 Replies

1351 Views

Last post by max and caddy
23 May 2014, 22:53
Oil in exhaust after AAZ Turbo Install.

Last post by Chopper « 23 May 2014, 19:07
Replies: 2
by Chopper » 23 May 2014, 15:56

I very frustratingly have Oil pissing out of the Turbo into the exhaust.
It's an AAZ Turbo on a 1Y Engine.
I've rebuilt the Turbo with new seals...

2 Replies

1084 Views

Last post by Chopper
23 May 2014, 19:07
jx to aaz turbo diesel upgrade

Last post by uncle monty « 23 May 2014, 16:10
Replies: 8
by uncle monty » 20 May 2014, 05:25

Hi there

does anyone know who and how much this can be done?

Is tbere such a thing as a turn key motor?

Regards

8 Replies

2997 Views

Last post by uncle monty
23 May 2014, 16:10
Subaru EJ25 exhaust shopping list.

Last post by KarlT « 23 May 2014, 07:07
Replies: 3
by KarlT » 22 May 2014, 18:52

Okay after several years (I know its shocking, what can I say, I'm busy!! :lol: ) I'm finally thinking about finishing my EJ25 SOHC engine conversion...

3 Replies

1515 Views

Last post by KarlT
23 May 2014, 07:07
Converting input shafts petrol-diesel

Last post by jim potter « 23 May 2014, 06:15
Replies: 3
by mig » 20 May 2014, 20:39

I will probably replace my dead WBX with an AAZ,
Being a tight git and having access to a lathe I am hoping to machine my petrol input shaft into a...

3 Replies

1257 Views

Last post by jim potter
23 May 2014, 06:15
clutch problem

Last post by t25driver « 21 May 2014, 10:10
Replies: 6
by t25driver » 09 May 2014, 11:52

my mates van another problem he bought a t3 camper van 300 mile away but when coming home the clutch was slipping so a
new clutch,seals,bearing...

6 Replies

2387 Views

Last post by t25driver
21 May 2014, 10:10
1.8t conversion kit.

Last post by Brendon « 21 May 2014, 03:45
Replies: 2
by Brendon » 20 May 2014, 20:46

Does any body in the uk supply a comprehensive DIY kit for a 1.8t conversion 15degree install?
Or is there a better conversion / easier conversion so...

2 Replies

1708 Views

Last post by Brendon
21 May 2014, 03:45
Aaz revs once then cuts out

Last post by conkers « 19 May 2014, 20:15
Replies: 2
by conkers » 18 May 2014, 08:47

Recently my aaz which has been really good starter started becoming harder to start -ie longer cranking. It then finally conked out, perhaps firing...

2 Replies

1672 Views

Last post by conkers
19 May 2014, 20:15
Changing my engine over

Last post by syncroandy « 19 May 2014, 19:42
Replies: 2
by Jay68 » 19 May 2014, 16:50

I have a t25 syncro 1.6td I have just brought a 1.9td aaz engine out of a golf mk3. I have been to see a guy about changing it over and he is asking...

2 Replies

2248 Views

Last post by syncroandy
19 May 2014, 19:42
K14 turbo & sump connector sizes

Last post by dcfb77 « 18 May 2014, 20:30

by dcfb77 » 18 May 2014, 20:30

When doing my AAZ conversion I had to fabricate an oil return line from turbo to sump out of bits I had lying around.

Always dripped a little bit of...

0 Replies

1009 Views

Last post by dcfb77
18 May 2014, 20:30
is T4 AAZ?

Last post by PhilXXJ « 18 May 2014, 17:30
Replies: 2
by PhilXXJ » 18 May 2014, 11:38

Can anyone let me know if the early T4s were fitted with the 1.9 AAZ engine . thanks

2 Replies

1069 Views

Last post by PhilXXJ
18 May 2014, 17:30
T25 auto, from DG to ???

Last post by waltraud « 17 May 2014, 20:33
Replies: 1
by woodguru » 17 May 2014, 10:21

I have decided it is time to upgrade my T25 from it's gutless DG engine, to something which will get me up a hill ! I have been looking on the...

1 Replies

1086 Views

Last post by waltraud
17 May 2014, 20:33
Forgotten Wires

Last post by Oilline « 16 May 2014, 22:16
Replies: 8
by Oilline » 13 May 2014, 18:25

After a long break due to house and work commitments i am now back on with my Subaru conversion and general refurb. As usual for me i pulled...

8 Replies

3357 Views

Last post by Oilline
16 May 2014, 22:16
Early agg gti inlet manifold .

Last post by Orbit « 15 May 2014, 02:07

by Orbit » 15 May 2014, 02:07

Hi there I'm fitting an agg 2.0 gti in my Aircooled bus and am having trouble finding out which inlet manifold I need to use as I'm getting...

0 Replies

1073 Views

Last post by Orbit
15 May 2014, 02:07
engine swop

Last post by Kent Joker « 13 May 2014, 20:48
Replies: 6
by andrew71 » 13 May 2014, 17:48

Hi can anybody help I've got an 82 air cooled camper
And was thinking of putting a Ford v6 in it has anybody
Done this ? If so is it much of a job ?...

6 Replies

2157 Views

Last post by Kent Joker
13 May 2014, 20:48

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