Club 80-90 Forums

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 engines. One swap is the 2.0 gti engine from a Mk3 golf. Are other golf engines suitable or only the AGG one. I take it I would need the wiring loom as well.
It was mentioned that you require the diesel engine bars, but always mentions the JX TD. Mine is a CS engine, are the bars the same or would I need JX bars.
Has anyone fitted an Audi TT 180 turbo engine to a T25. There seems to be lots of cheap audi engines about.
The van is off the road now so I was hoping for a swap that wouldn't take forever, that someone had already worked out the glitches. Cheers
 

AGG is a decent engine in a T25, mechanically a fairly straightforward swap. It'll be a lot better than a CS, but they're nothing special, really. I took a DJ out to put an AGG in and realistically it was a total waste of time and money. Fuel economy was improved but that's all.

1.8T engine can be made to fit, its more work (both mechanically to get it to fit, and then plumbing the air intake, working out some sort of intercooler etc etc) and unless you detune it, your gearbox will soon turn itself inside out.

If I had a CS van that I wanted to make more usable without going wild, an AGG is a good choice. If you can find one.
You'll use your CS bars and most of the ancilliaries, fitted to the AGG block.

Are ther not gearbox issues to consider?

it will accelerate through the gears really well but be a bit top speed limited or a bit revvy at high speed with the original box, but a petrol box is an easy swap down the line. A JX box would be a better compromise to start from as they have the taller 4th or are the same as the petrol 1.9 5 speed overall.
If you want a 60mph van the old CS box will work

So is all this flipped audi malarky just for higher HP stuff?

Rob

Yeah, pretty much. The ratios in a stock box generally suit the amount of power they can handle (ignoring TDIs). You're welcome to put an audi box behind a JX but realistically the top two or three gears would be useless.

Building a t25 box to cruise 2200rpm at 80mph is pointless because if you had the torque required to push the van along at that speed and RPM, that engine would destroy it.
Flipped audi boxes do have longer ratios and can take more power, however there's little point bothering unless you've swapped a more powerful engine in, IMO.
A tuned 1.8t / 2.0 tfsi and a flipped box would be fun but its 5 orders of magnitude more involved of a swap than dropping an AGG in where a CS once was.
 

So the AGG is probably the easiest route. It still must be about double the power of the CS. Are parts for the AGG still readily available.

You shouldn't struggle to find most external parts for an AGG, it's the same basic block as VW used all over the world for about 30 years.
Getting an AGG engine is hard work now, it's mostly fitted in MK3 golf GTis. 10/15 years ago these were unloved and nearly worthless, it was easy to pick up an MOT failure for £200, pinch the engine and sell the rest of the bits, you could easily end up with a free engine.
I paid £200 for a car and made £900 selling the bits I didn't need!

Because they were worthless for so long, most of them ended up scrapped. There's hardly any of them left now and the ones that are still around are generally enthusiast owned - looking on howmanyleft shows there's well under 500 mk3 GTis on the road...

Our donkey '99 Audi A4 has a 1.8 normally aspirated 20v. 125PS, 170Nm. Frugal, quiet, really gets going above 3k and the redline is 6200rpm so you won't burst it.
There were several variants of this with various inlet manifold arrangements, most of which are too tall or bulky for a bus or van but will fit in a pickup.
They all use the same type of block as the AGG or JX etc (the one with the side bulge in the sump flange to clear the oil pump) so in principle they are a bolt-in aside from the exhaust and wiring...
Most are drive by wire but some have a throttle cable if that is an issue.

As ian said the n/a 1.8 20v is a real peach of an engine I fitted one to my old syncro doka was happy sitting on the motorway at 80mph at 4000 rpm with much more to give if needed. Was nit an issue in the doka but the manifolds will be an issue in a van.
Andy who did the loom was not at all concerned when he did it. I wojkd imagen it no more complex than the pd engines that are now becoming popular.