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aj_johnson
A.J. Johnson
Infallible Moderator
Location: Pendleton OR
Join Date: 01/07/2011
Age: Midlife Crisis
Posts: 1,381

Rally Car:
88 Audi 80


aj_johnson
Re: audi 80 back at it!
January 18, 2014 07:07PM
John another cheap way to make the house really cool. Setup is key, about 25 min a door if you do em all at once. Cost about 2.00$ each. Or hire the neighbor kid to sand the paint off. But beats the shitty look of an old door painted 100 different coats.
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john vanlandingham
John Vanlandingham
Infallible Moderator
Location: Ford Asylum, Sleezattle, WA
Join Date: 12/20/2005
Age: Fossilized
Posts: 14,152

Rally Car:
Saab 96 V4
john vanlandingham
Re: audi 80 back at it!
January 19, 2014 11:10AM
Quote
vbares
Quote
John
So if you wanted to optimise the comp and booost you can do that easier with custom pistons than fiddling with off the shelf stuff that may not be what you want for the unique requirements of a restricted motor...

The AAN pistons, which are going into this motor, w/the 20v head offer a 9.3:1 comp ratio - we can run 26lb of boost on 93 octane pump gas - what would be a target for comp ratio and boost be given 32mm restrict?

Displacement is currently 2.2l - so could be jumped to 2.5l and still fit in the rewls..

A set of new stock pistons are $600, set of forged is $700 sad smiley

Tell me more about what you would do to improve this configuration?

Quote
Brian
Are you heart set on a 20v audi? why not look into a newer design 20v or an ABF-T… or or.

I've considered the 07k - all aluminum Audi 20v, believe it to be 2.5l - but just to get the motor setup for loongitudinal duty would require about $4k and many hours of re-fabbing shnizle - for what gain outside of weight would I get for the $ and hours?

Remember - I'm a classic grass roots guy, this particular catastrophe will turn a 4 race season into a 1 race season - the pot only has so many beans in it...

Vittorio muchachito mio, I hate typing, and hate PM. I telephone both numbers I have for you..
Call, I have had tea and i have some ciggies.


John Vanlandingham
Sleezattle, WA, USA

Vive le Prole-le-ralliat

www.rallyrace.net/jvab
CALL +1 206 431-9696
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Josh Wimpey
Josh Wimpey
Mega Moderator
Location: VA
Join Date: 12/27/2006
Age: Midlife Crisis
Posts: 649

Rally Car:
Sneak the Golf
Josh Wimpey
Re: audi 80 back at it!
January 19, 2014 11:12AM
Quote
vbares

Quote
Brian
Are you heart set on a 20v audi? why not look into a newer design 20v or an ABF-T… or or.

I've considered the 07k - all aluminum Audi 20v, believe it to be 2.5l - but just to get the motor setup for loongitudinal duty would require about $4k and many hours of re-fabbing shnizle - for what gain outside of weight would I get for the $ and hours?

Hank at IROZ has already fitted the 07K to the 01E trans with a bell housing adapter, mounts, and the works.

Saves probably 75lbs off the Iron 5-cyl 20V and a way better design.

Also shorter overall length frees up enough room for a full radiator in FRONT where it belongs even in a small chassis Audi


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aj_johnson
A.J. Johnson
Infallible Moderator
Location: Pendleton OR
Join Date: 01/07/2011
Age: Midlife Crisis
Posts: 1,381

Rally Car:
88 Audi 80


aj_johnson
Re: audi 80 back at it!
January 19, 2014 01:09PM
Diff options for 01e suck. For cheap stuff 1.8t would be the easiest but a half litre of displacement is a lot to give up
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john vanlandingham
John Vanlandingham
Infallible Moderator
Location: Ford Asylum, Sleezattle, WA
Join Date: 12/20/2005
Age: Fossilized
Posts: 14,152

Rally Car:
Saab 96 V4
john vanlandingham
Re: audi 80 back at it!
January 19, 2014 07:18PM
Hej AJ, had a nice chat wif Vittorio and I said before we can explore sensible options we need to have some basic info, so I said I‘d ax youse.
First: For his thing ANN do you know the rod c-c?
Do you happen to know the block deck height?
Do you know if the pistons are DEAD FLUSH with deck at TDC? we're talking fractions of mm here ZERO or what?
Do you know compressed gasket thickness? Gasket bore dia?
Combustion chamber volume?

You must those things right off the tip of your head, so share the info doooood.


John Vanlandingham
Sleezattle, WA, USA

Vive le Prole-le-ralliat

www.rallyrace.net/jvab
CALL +1 206 431-9696
Remember! Pacific Standard Time
is 3 hours behind Eastern Standard Time.
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Pete
Pete Remner
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Location: Cleveland, Ohio
Join Date: 01/11/2006
Age: Midlife Crisis
Posts: 2,022
Pete
Re: audi 80 back at it!
January 19, 2014 07:41PM
Hey John, it's same as 4-cylinder. 220mm deck height 144mm rods... MAYBE 48mm journal like the fours, maybe 46mm like the older fives, kinda hazy there...


Pete Remner
Cleveland, Ohio

1984 RX-7 (rallycross thing)
1978
Silence is golden, but duct tape is silver.
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john vanlandingham
John Vanlandingham
Infallible Moderator
Location: Ford Asylum, Sleezattle, WA
Join Date: 12/20/2005
Age: Fossilized
Posts: 14,152

Rally Car:
Saab 96 V4
john vanlandingham
Re: audi 80 back at it!
January 19, 2014 08:03PM
Quote
Pete
Hey John, it's same as 4-cylinder. 220mm deck height 144mm rods... MAYBE 48mm journal like the fours, maybe 46mm like the older fives, kinda hazy there...

What about at TDC, the pistones dead flush?


John Vanlandingham
Sleezattle, WA, USA

Vive le Prole-le-ralliat

www.rallyrace.net/jvab
CALL +1 206 431-9696
Remember! Pacific Standard Time
is 3 hours behind Eastern Standard Time.
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Josh Wimpey
Josh Wimpey
Mega Moderator
Location: VA
Join Date: 12/27/2006
Age: Midlife Crisis
Posts: 649

Rally Car:
Sneak the Golf
Josh Wimpey
Re: audi 80 back at it!
January 20, 2014 09:12AM
For whatever it is worth, the 5-cyl 20v motors are identical to the VW 16v motors in terms of internals and combustion chamber designs, etc


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aj_johnson
A.J. Johnson
Infallible Moderator
Location: Pendleton OR
Join Date: 01/07/2011
Age: Midlife Crisis
Posts: 1,381

Rally Car:
88 Audi 80


aj_johnson
Re: audi 80 back at it!
January 20, 2014 09:25AM
No idea if the pistons are dead flush but im inclined to say not. Won't have a 20v lying around till after I drive over to Boise to pick it up
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Pete
Pete Remner
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Location: Cleveland, Ohio
Join Date: 01/11/2006
Age: Midlife Crisis
Posts: 2,022
Pete
Re: audi 80 back at it!
January 20, 2014 12:21PM
The only 20Vs I have access to are about three hours away.

For the 10V stuff Audi was apparently all over the board. My old 2.1 block had the pistons way down in the bores like they had heard about squish and decided they wanted nothing to do with it. My current 2.2 has the pistons slightly proud of deck, as I discovered when I was scraping the deck surface... but it's the "high compression" engine, whopping 8.5:1...

If you're having new pistons made, why copy what Audi did for whatever weird Audi reason?


Pete Remner
Cleveland, Ohio

1984 RX-7 (rallycross thing)
1978
Silence is golden, but duct tape is silver.
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john vanlandingham
John Vanlandingham
Infallible Moderator
Location: Ford Asylum, Sleezattle, WA
Join Date: 12/20/2005
Age: Fossilized
Posts: 14,152

Rally Car:
Saab 96 V4
john vanlandingham
Re: audi 80 back at it!
January 20, 2014 03:40PM
Quote
Pete
The only 20Vs I have access to are about three hours away.



If you're having new pistons made, why copy what Audi did for whatever weird Audi reason?

That decision hasn't been made. What we want to do is some side by side comparison deal like three colums Stock vs "specA" vs "spec B"
So we need to know where we're starting from..
Everything is always a cost vs benefit ratio so we need to apply costs and what it is to see and think about if this mod say forged zero deck 9.5 comp pistons would be worth the incresed cost vs cast whatever down the bore 0,4 OEM junk...
KnowhatImean, Vern?


John Vanlandingham
Sleezattle, WA, USA

Vive le Prole-le-ralliat

www.rallyrace.net/jvab
CALL +1 206 431-9696
Remember! Pacific Standard Time
is 3 hours behind Eastern Standard Time.
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vbares
Vittorio Bares
Senior Moderator
Location: Londonderry, NH
Join Date: 04/10/2007
Age: Ancient
Posts: 413

Rally Car:
Audi 4k (3b conversion)
vbares
Re: audi 80 back at it!
January 20, 2014 05:37PM
Pistons come up a couple thou proud at top of stroke.

Don't know what the clearance is stock yet and I should know the compressed gasket height in the next day or so...
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vbares
Vittorio Bares
Senior Moderator
Location: Londonderry, NH
Join Date: 04/10/2007
Age: Ancient
Posts: 413

Rally Car:
Audi 4k (3b conversion)
vbares
Re: audi 80 back at it!
January 29, 2014 11:25PM
compressed HG for an AAN is 1.6mm
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aj_johnson
A.J. Johnson
Infallible Moderator
Location: Pendleton OR
Join Date: 01/07/2011
Age: Midlife Crisis
Posts: 1,381

Rally Car:
88 Audi 80


aj_johnson
Re: audi 80 back at it!
February 12, 2014 11:45PM
One step closer to wrenching on the rally car again! First car in the shed, for some maintenance. Going to pickup the rally car tomorrow. Also finished the remodel of the upstairs bathroom. (ran the house budget out so no more house work till next month!)

Sorry for the useless post, just getting the motivation going
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Gravity Fed
Alex Staidle
Junior Moderator
Location: Δx = ħ/2Δp
Join Date: 08/21/2009
Age: Settling Down
Posts: 1,719

Rally Car:
Various Heaps
Gravity Fed
Re: audi 80 back at it!
February 14, 2014 03:38PM
are we doing OTR or what


First Rally: 2010 First RallyX: 2004 (a bunch)
Driver (0), Co-Driver (7)
Organizer (3), Volunteer (3)
Cars Built (2.5), Engines Blown (2) Cages Built (0) # of rotations (3.5)
Last Updated, Apr 9, 2023
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