for questions and answers about alternative power transplants on the T25, GTi, Porsche,Subaru etc, this is the place. You must register to post but anyone can read.
Moderators: User administrators , Moderators
Petrol Alternative Engines...
Replies: 10
by
HarryMann »
15 Oct 2005, 01:57
Subaru Engine Types and Options
10 Replies
104798 Views
Last post by silverbullet
06 Apr 2024, 16:09
18 Replies
158595 Views
Last post by sdelasal
09 Aug 2008, 22:43
AHU turbo question
Replies: 6
by
hotpod »
12 Feb 2026, 10:56
I have an AHU engine with a KKK turbo which has a pipe from the compressor to the N75 and one from the N75 which goes back to the turbo to operate...
6 Replies
393 Views
Last post by hotpod
14 Feb 2026, 20:28
1y identification
Replies: 9
by
BarnyE »
08 Feb 2026, 10:16
I have a 1900 1y conversion in my van and want to do a belt change on it.
9 Replies
1064 Views
Last post by davidoft1
12 Feb 2026, 10:47
CS to AGG engine swaps
Replies: 2
by
HappyCamper »
29 Jan 2026, 18:54
Hi, I was looking for info, on changing a CS diesel engine for an AGG. There seems to have been plenty done, but I can't see much info. I've tried...
2 Replies
849 Views
Last post by cobblers
30 Jan 2026, 09:06
Which petrol engines.
Replies: 9
by
HappyCamper »
09 Jan 2026, 13:56
Hi, a few more questions on engine swaps. I've seen info on swapping from diesel to petrol. The good thing is I'm more comfortable working on petrol...
9 Replies
2335 Views
Last post by axeman
16 Jan 2026, 17:44
1.9 Tdi upgrade , issues , solutions
Replies: 10
by
dcworm57 »
27 Nov 2025, 15:33
I’m considering 1.9 Tdi upgrade to my 1.6jx westy . It’s now on Brickwerks high lift kit and I’m told by various sources that 1.9 Tdi wont work on...
10 Replies
2846 Views
Last post by HappyCamper
08 Jan 2026, 11:14
Diesel Injection Pump.
Replies: 1
by
Burtybassett »
15 Nov 2025, 16:49
Hiya 👋
1 Replies
1332 Views
Last post by lefty67
18 Nov 2025, 19:17
Re-mapping AHU TDI
Replies: 14
by
hotpod »
02 Sep 2025, 13:25
Is this possible?
14 Replies
14848 Views
Last post by ZsZ
30 Oct 2025, 14:37
7 Replies
16046 Views
Last post by Basilakios
24 Sep 2025, 12:13
AAZ diesel pump leak
Replies: 5
by
Al Housman »
13 Sep 2025, 14:58
The truck is finally going after being stood for about 2 years and sounds really good.
5 Replies
11929 Views
Last post by Al Housman
13 Sep 2025, 20:28
AFN TDI Obd scanner
Replies: 3
by
fh9977 »
04 Sep 2025, 12:31
Hi, would anyone be able to recommend an OBD device I can connect to the port of an ATF TDI engine to read live data? Is it possible to have a...
3 Replies
11878 Views
Last post by Robsey
07 Sep 2025, 20:53
5 Replies
12282 Views
Last post by Ukjamie82
04 Sep 2025, 13:00
2 Replies
12212 Views
Last post by ManicGTI
03 Sep 2025, 21:13
Help! Timing belt creeping off cog
Replies: 8
by
sopranolady »
26 May 2016, 09:36
Hi, apologies if this is the wrong category for the post, I'm looking for urgent advice, having hit a snag with our engine fitting project.
8 Replies
15140 Views
Last post by colinthefox
30 Aug 2025, 18:48
Throttle Potentiometer Issue
Replies: 6
by
Nistorph »
21 Jul 2025, 20:40
Hi,
6 Replies
620141 Views
Last post by TwinTurbo
16 Aug 2025, 12:36
Part Identification
Replies: 7
by
Bison535 »
13 Aug 2025, 10:13
Early Bay T2 with petrol engine 1.6 has difficulty in running and suspect a ‘sensor’ fault!?! Have removed this Sensor Unit but cannot identify which...
7 Replies
12968 Views
Last post by Oldiebut goodie
13 Aug 2025, 14:01
Glow plugs T3 tdi
Replies: 3
by
Kougar38s »
24 Jul 2025, 10:56
Hi all, I'm a new member and a new owner of a 1989 T3 tdi 1.6.
3 Replies
15371 Views
Last post by Simon Baxter
11 Aug 2025, 13:10
1.9DG to diesel swap.
by
DavidS »
10 Aug 2025, 21:37
I used to own a T25 with a 1.7KY engine which not obviously not quick, but it was very reliable and pretty economical. I had planned to put a 1Y in...
0 Replies
14411 Views
Last post by DavidS
10 Aug 2025, 21:37
Cosworth 2.9litre in my Crewwy
Replies: 302
by
dickspanner »
04 Jul 2006, 15:56
Hi folks
302 Replies
219980 Views
Last post by dickspanner
07 Aug 2025, 19:53
1.6d to 1y the definitive guide
Replies: 103
by
weldore »
15 Aug 2012, 16:05
theres been a few people over the years gone this route including myself and have had to ask questions or trawl through the alt forum for answers and...
103 Replies
621462 Views
Last post by JonathanUSSF
30 Jul 2025, 10:50
Power steering pump
Replies: 2
by
paradox »
26 Jul 2025, 16:09
I’ve a 1.9 TDi Passat engine in my van
2 Replies
339579 Views
Last post by Aidan
27 Jul 2025, 09:14
1.9d 1Y exhaust.
by
BarnyE »
26 Jul 2025, 18:37
Hey all, been reading up on this and I’ve got myself more confused than ever.
0 Replies
336477 Views
Last post by BarnyE
26 Jul 2025, 18:37
AAZ VS Air cooled
Replies: 6
by
davegeezzer008 »
27 Jun 2025, 19:58
Im having problems getting my AAZ pump rebuilt as bosch don't make many parts for the VE pump any more, so I'm just thinking ahead about my options...
6 Replies
137760 Views
Last post by dcworm57
16 Jul 2025, 05:12
Engine swop question
Replies: 1
by
aimlessrock »
11 Jul 2025, 19:43
Hi,
1 Replies
15011 Views
Last post by colinthefox
11 Jul 2025, 21:08
AAZ upgrade turbo and realistic power
Replies: 1
by
TommyJenko »
21 Jun 2025, 16:40
Hi guys I have a AAZ in bits that came with my van, I was going to rebuild it but looking at the turbo it’s a kkk-k03 which seems a bit small for the...
1 Replies
15637 Views
Last post by syncroandy
08 Jul 2025, 14:55
1.8T Sump Bolt Access
by
Vaughanylive »
06 Jul 2025, 07:43
I’ve got a 1.8T converted Syncro (AUM stamped block, but cable throttle) with a custom mild-steel sump made by whoever did the conversion. The paint...
0 Replies
19201 Views
Last post by Vaughanylive
06 Jul 2025, 07:43
AHU TDI Vibration Damper Pulley testing
Replies: 8
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?
8 Replies
19387 Views
Last post by hotpod
28 Jun 2025, 08:52
15 Replies
20790 Views
Last post by silverbullet
20 Jun 2025, 06:42
TDI annoying pause when pulling away
Replies: 9
by
hotpod »
06 Jun 2025, 09:22
1997 AHU ETDI
9 Replies
14996 Views
Last post by syncroandy
15 Jun 2025, 16:14
3 Replies
13365 Views
Last post by R0B
15 Jun 2025, 09:39
8 Replies
49406 Views
Last post by Lio
12 Jun 2025, 17:21
Oil Capacity (Diesel 1Y Engine)
Replies: 2
by
The Hairy Camper »
10 Jun 2025, 15:40
Just replaced a leaky sump gasket/baffle plate. Drained all the oil, replaced oil filter, and refilled with 4.5L of 15W40 oil. However, the dipstick...
2 Replies
12881 Views
Last post by The Hairy Camper
10 Jun 2025, 15:54
1z tdi ecu
Replies: 5
by
Wallace748 »
14 Oct 2015, 19:03
Hi, I'm running a 93/94 1z tdi with the 68 pin ecu. Struggling to get coms via diagnostic plug( it's the old two pin type) anyone help me out with...
5 Replies
10146 Views
Last post by bundyboy
10 Jun 2025, 08:34
4 digit pin code for AHU ECU Login?
Replies: 4
by
hotpod »
29 May 2025, 08:20
Does anyone know a way to find the 4 digit pin that VCDS requires to be able to do things like add new keys?
4 Replies
14324 Views
Last post by hotpod
30 May 2025, 07:47
1Y coolant pipes/system
Replies: 15
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...
15 Replies
22398 Views
Last post by colinthefox
21 May 2025, 20:34
Subaru Engine Identification Needed
Replies: 5
by
Basilakios »
19 May 2025, 21:41
Hi!
5 Replies
14174 Views
Last post by Basilakios
20 May 2025, 16:25
1.8T Wiring/Fault Codes
Replies: 17
by
Vaughanylive »
29 Apr 2025, 18:44
I’ve got a T25 Syncro with a 1.8T conversion (AGU) which seems to be running ok but out of curiosity I plugged it into my VCDS Lite which is showing...
17 Replies
23783 Views
Last post by Splurt
17 May 2025, 10:54
AHU immobiliser stuck on. Help please
Replies: 6
by
hotpod »
03 May 2025, 09:41
1997 VW Golf AHU tdi in a T3 van. Installed in 2014
6 Replies
16461 Views
Last post by hotpod
14 May 2025, 09:27
5 Replies
14898 Views
Last post by Aidan
12 May 2025, 17:38
The SA 2.6i Microbus thread
Replies: 244
by
silverbullet »
23 Mar 2011, 12:07
I appreciate that this is pretty obscure but here goes...broke down in the 2.6 SA on Friday, had to be recovered :oops: thought I had fixed it with a...
244 Replies
274409 Views
Last post by silverbullet
09 May 2025, 19:58
Leaking Cooling Pipe Replacement
Replies: 4
by
Jdavis »
04 Mar 2025, 08:49
Hello all. New to the site and to T25 ownership.
4 Replies
54725 Views
Last post by Jdavis
03 May 2025, 05:39
Sump Plug
Replies: 7
by
Burtybassett »
26 Apr 2025, 10:47
Trying to change the oil and the blasted Sump Plug won't undo.
7 Replies
21562 Views
Last post by Aidan
27 Apr 2025, 14:32
aey engine
Replies: 10
by
warrior.1229 »
05 Feb 2015, 20:56
hi i am new to the t25 scene my wife has just bought me my first van but unfortunately the chap saw us coming it is a 1.6 cs diesel engine but i need...
10 Replies
22493 Views
Last post by Vwt25campee
26 Apr 2025, 09:29
Exhaust falling off
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.
4 Replies
17432 Views
Last post by silverbullet
23 Apr 2025, 18:07
VCDS Fault code deciphering AHU TDI
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
23192 Views
Last post by hotpod
23 Apr 2025, 09:35
Engine Swap
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
49525 Views
Last post by Dueller
18 Apr 2025, 11:41
Alternators.. inline 4 engines
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.
6 Replies
17890 Views
Last post by Dueller
18 Apr 2025, 11:31
Diesel Engine Code Location
Replies: 6
by
The Hairy Camper »
06 Apr 2025, 18:54
I was struggling to find the engine code on my 1Y today.
6 Replies
17902 Views
Last post by T25boy71
11 Apr 2025, 09:26
7 Replies
64619 Views
Last post by therealchrisgray
17 Mar 2025, 11:03
Forum permissions
You cannot post new topics in this forumcannot reply to topics in this forumcannot edit your posts in this forumcannot delete your posts in this forumcannot post attachments in this forum
