Gearbox for TDi into B2 80

markb · 19-07-10, 10:13 PM

Hey,

I'm about to start a TDi engine swap into my 1986 80 GL but I don't think the present ratios are ideal for the TDi.

Currently when doing and indicated 70 the engine is at ~2900RPM.

Is there 'box from another car (maybe a later 80 or passat?) that will fit and will have better ratios?

I suppose one thing that may have an influence is that my 80 has a cable clutch at the moment, but I am assuming most of the later 'boxes will have hydraulic clutches, so how hard is it to convert my 80 to hydraulic clutch?

Any help much appreciated.

Cheers,
Mark.

pimpdriver · 20-07-10, 05:28 AM

B2 90s have hydraulic clutch.

Sounds an interesting conversion I have thought of before.

JMLAudi · 20-07-10, 06:33 AM

hi

i got a cheap good condition gearbox if interested,located in Bradford

PM me

cheers
john

markb · 20-07-10, 08:52 AM

I love diesels me, I can't seem to have a car without wanting to diesel it...

This one is going to get a mechanical pump from a discovery, making it an m-tdi. Just to confuse things even more, I'm putting a VNT turbo from a crafter van on it which will be driven by a VNT controller I'm designing.

Hi John, well I could be interested, but I don't even know what gearbox I'm looking for yet... What is this one from? are the ratios diesel friendly? Will it fit my 80 with no mods, some mods, etc.

Mark.

JMLAudi · 20-07-10, 09:45 AM

Hi Mark

Yes gearbox is from a M REG 1.9 tdi Audi 80 Avant....should bolt up easy
but i dont have spare set of driveshafts for it though

where you based?

Cheers

john

90Quattro · 20-07-10, 11:58 AM

get a 6speed from the later passats/audis be well worth the extra effort in long run

markb · 20-07-10, 12:09 PM

My B2 80 quattro is hyd clutch as well, so i'm assuming it shouldn't be a big issue, but havn't looked yet.

John, Do you know if the Driveshafts are the same? i.e. length and CV size? Also, is it hydarulic clutch? Oh, and cable or electronic speedo?

90Q, I do like the idea of the 6speed, have you any idea how much work is involved in fitting one?

msh · 20-07-10, 04:38 PM

Quote:

Originally Posted by pimpdriver

B2 90s have hydraulic clutch.

Sounds an interesting conversion I have thought of before.

Only thing why this is still interesting is low amount of old audis left on british roads + price for such conversation in UK would be astronomical. But in latvia it's now common - 2.5 10v TDI are being stuffed into B2's, B3's [coupes, A90, both fwd and quattro], B4 [but less common, since B4 got 1.9 TDI], C3 A100, A200 both fwd and quattro, and also in C4 that originally got petrol engine - I, for example, know one UrS6, which now can be called "Audi A6 2.5 TDI quattro avant", since it's not S6 anymore

And there is two reasons for this - ppls who doesn't calculate total costs or ppls, who buys stolen [usually employee sells fuel saved on he's work vehicle] diesel, so there is economy [current diesel prices in latvia, I presume, is somewhere around 75-80 santims per litre, stolen diesel usually goes around 45 santims per litre, 1 pound = 80 santims for comparision]. I actually hate to see this. Some time ago I dreamed about such engine for my A90q, but not anymore - since I would use petrol stations as with A80, economy from consumption differences between 2.5 TDI and NG would be enough low that I could say "I'm not that rich to use old diesel engine". And after all, audi isn't any crap car, so it must have proper engine, not tractor engine.
Ah, one more difference between UK and latvia - in latvia only rare AAT have still 115 bhp and rare AEL have 140 bph, usually there is at least performance chip installed, but some goes further. I know one person, one year younger than me, who has A200q with 2.5 TDI, probably now somewhere around 200 bhp and at least 400 nm, but I think that's old news. Some time ago he planned to install VNT turbo and for this ECU from newer model 1.9 TDI, so probably he now has more power. And he's not the only one like that.

dandan · 20-07-10, 05:47 PM

hello i own a TD B2 80 good luck with your engine swap what hp you think it'll be running?

markb · 20-07-10, 09:08 PM

Hi dandan, I've seen your posts before and believe me, i'm jealous! Have you tuned your engine up at all? I've put an AAZ (1.9TD) into a caddy and a mk2 golf and will be doing an old skoda felica pickup soon.

I don't expect to be running anything too impressive, this is my daily driver, but maybe around 120bhp?

20-07-10, 06:33 AM	#3
JMLAudi Grown up member Classic Audi Club Member Join Date: Jan 2010 Location: Knaresborough/Shipley Posts: 951	tdi box hi i got a cheap good condition gearbox if interested,located in Bradford PM me cheers john

20-07-10, 09:45 AM	#5
JMLAudi Grown up member Classic Audi Club Member Join Date: Jan 2010 Location: Knaresborough/Shipley Posts: 951	gearbox Hi Mark Yes gearbox is from a M REG 1.9 tdi Audi 80 Avant....should bolt up easy but i dont have spare set of driveshafts for it though where you based? Cheers john

20-07-10, 11:58 AM	#6
90Quattro 4 ring whore! Classic Audi Club Member Join Date: Oct 2007 Location: Hampshire / Stoke-on-Trent Posts: 2,319	get a 6speed from the later passats/audis be well worth the extra effort in long run __________________ 90 Quattro Project http://www.classic-audi.co.uk/forum/...read.php?t=235 Passat 130 Sport http://www.classic-audi.co.uk/forum/...5830#post15830SOLD http://www.helpforheroes.org.uk/ www.armedforcesrallyteam.com

20-07-10, 05:47 PM	#9
dandan big gimping Classic Audi Club Member Join Date: Jun 2008 Location: derby Posts: 1,105	hello i own a TD B2 80 good luck with your engine swap what hp you think it'll be running? __________________

20-07-10, 05:28 AM	#2
pimpdriver Devon Pastie Muncher Classic Audi Club Member Join Date: Jul 2007 Location: Calne Wiltshire Posts: 7,530	B2 90s have hydraulic clutch. Sounds an interesting conversion I have thought of before.

20-07-10, 08:52 AM	#4
markb Grown up member Join Date: Feb 2010 Posts: 20	I love diesels me, I can't seem to have a car without wanting to diesel it... This one is going to get a mechanical pump from a discovery, making it an m-tdi. Just to confuse things even more, I'm putting a VNT turbo from a crafter van on it which will be driven by a VNT controller I'm designing. Hi John, well I could be interested, but I don't even know what gearbox I'm looking for yet... What is this one from? are the ratios diesel friendly? Will it fit my 80 with no mods, some mods, etc. Mark.

20-07-10, 12:09 PM	#7
markb Grown up member Join Date: Feb 2010 Posts: 20	My B2 80 quattro is hyd clutch as well, so i'm assuming it shouldn't be a big issue, but havn't looked yet. John, Do you know if the Driveshafts are the same? i.e. length and CV size? Also, is it hydarulic clutch? Oh, and cable or electronic speedo? 90Q, I do like the idea of the 6speed, have you any idea how much work is involved in fitting one?

20-07-10, 09:08 PM	#10
markb Grown up member Join Date: Feb 2010 Posts: 20	Hi dandan, I've seen your posts before and believe me, i'm jealous! Have you tuned your engine up at all? I've put an AAZ (1.9TD) into a caddy and a mk2 golf and will be doing an old skoda felica pickup soon. I don't expect to be running anything too impressive, this is my daily driver, but maybe around 120bhp?