View previous topic :: View next topic |
Author |
Message |
Bockscar
Joined: 16 Nov 2010 Posts: 392 Location: Sandy, Oregon
|
Posted: Tue Jul 31, 2012 4:14 am Post subject: Interesting head thought |
|
|
Hello folks,
I was thinking about something this morning. The original 924 used VW's standard EA831 engine which was used in my VW's and Audi's of that era. Later on with the 931, Porsche continued to use the EA831 block but redesigned the head. Since they continued to use the standard block, the bolt pattern on the new head had to continue to match the block. Does this mean that one could take the head from late 80's 1.8T and bolt it onto the block? Head swaps are a very common modification with German cars for some reason, especially with BMWs.
Has anyone ever tried this? _________________ Brian
'79 924 - Restoration In Progress
'81 924 Turbo w/EFI - Scrapped |
|
Back to top |
|
|
morghen
Joined: 21 Jan 2005 Posts: 8884 Location: Romania
|
Posted: Tue Jul 31, 2012 4:24 am Post subject: |
|
|
i have yet to see the vw/audi that uses the 924 block..
i've only seen one engine that looked alot liket a 924 engine and had the head cover different, it had a vw/audi emblem on it...it was on carbs..and on a 924...but i have no ideea what that is.
however, the MK2 vw has a different, smaller block. it is not the same as the block that the 924 uses. _________________ https://www.the924.com |
|
Back to top |
|
|
Bockscar
Joined: 16 Nov 2010 Posts: 392 Location: Sandy, Oregon
|
Posted: Tue Jul 31, 2012 4:27 am Post subject: |
|
|
morghen wrote: | i have yet to see the vw/audi that uses the 924 block.. |
The Audi 100 and VW LT Vans used this engine. It looks like most other VWs used the EA827 engine. _________________ Brian
'79 924 - Restoration In Progress
'81 924 Turbo w/EFI - Scrapped |
|
Back to top |
|
|
morghen
Joined: 21 Jan 2005 Posts: 8884 Location: Romania
|
Posted: Tue Jul 31, 2012 5:12 pm Post subject: |
|
|
Bockscar wrote: | morghen wrote: | i have yet to see the vw/audi that uses the 924 block.. |
The Audi 100 and VW LT Vans used this engine. It looks like most other VWs used the EA827 engine. |
No they dont
i've seen loads of audi 100s and even LT vans, old as 77 and new as 86 and none of them had an engine that even looked similar to the 924 one.
like i said, i have yet to see a car that has the engine from a 924.
EDIT: i have never seen an LT that had anything else than a diesel engine. _________________ https://www.the924.com |
|
Back to top |
|
|
Rasta Monsta
Joined: 12 Jul 2006 Posts: 11724 Location: PacNW
|
Posted: Wed Aug 01, 2012 12:43 am Post subject: |
|
|
morghen wrote: | No they dont |
_________________ Toofah King Bad
- WeiBe (1987 924S 2.5t) - 931 S3
|
|
Back to top |
|
|
Kenodog
Joined: 25 Jun 2003 Posts: 2651 Location: Vancouver,B.C.
|
Posted: Wed Aug 01, 2012 12:59 am Post subject: |
|
|
Yes they do. The AMC Gremlin also uses our block although it has a different head and carbs. There was also a postal van in Canada and the US that has it. This is fact. _________________ 1979 Euro 931, Olive
1981 931, Sabine
1991 Ford Ranger XLT 4x4, Ricky
1996 Ford E-350 ex-FedEx Van
2014 Mazda CX-5 (Kinderwagon)
2019 KTM 790 Adventure
2024 KLX300
2024 KLX140 |
|
Back to top |
|
|
Bockscar
Joined: 16 Nov 2010 Posts: 392 Location: Sandy, Oregon
|
Posted: Wed Aug 01, 2012 3:25 am Post subject: |
|
|
I did a bunch of research on this yesterday and here's what I discovered:
The engine in the stock 924 (EA831) is an old antiquated design originally made by NSU/Audi and very briefly used by Audi in their 100's from about 1975 to 1977. While some AMC cars use a variation of the EA831, AMC bought the rights to manufacturer the engine which is why you'll see AMC's with a similar looking engine with a different head and carbs.
Basically, our engine, the EA831, isn't a VW engine at all. It's an old NSU engine that VW inherited and didn't even use. VW chose to use their Audi designed EA827 engine which was first introduced in 1972 and still in use to this day.
The summarize, even though the two engines may look similar (the EA831 and EA827), they share very few things in common and the heads are certainly not compatible. Sad _________________ Brian
'79 924 - Restoration In Progress
'81 924 Turbo w/EFI - Scrapped |
|
Back to top |
|
|
fiat22turbo
Joined: 18 Jan 2006 Posts: 4040 Location: Portland, OR
|
Posted: Wed Aug 01, 2012 4:05 am Post subject: |
|
|
Yep, the EA831 has more in common with the 5-cylinder Audi motors than the 4-cylinder VW motors.
That's why the Audi 5-cylinder swap isn't too bad to perform compared to say a Chebby V8 swap or even putting a 944 motor in the 924 shell. _________________ Stefan
1979 924 Carrera GTS (clone-ish)
1988 944 Turbo S (Silver Rose) |
|
Back to top |
|
|
Raceboy
Joined: 01 Mar 2004 Posts: 2326 Location: Estonia, Europe
|
Posted: Wed Aug 01, 2012 4:17 am Post subject: |
|
|
There were Audi 100's from 1976-1978 which used the 924 engine block but used carbs and had 115 hp and LT vans also, these had 7.5:1 CR and produced 75 hp. About 10 years ago we bought several LT engines to get good usable blocks and crankshafts for real cheap (read: next to nothing). _________________ '83 924 2.6 16v Turbo, 470hp
'67 911 2.4S hotrod
'90 944 S2 Cabriolet
'78 924 Carrera GT replica
'84 928 S, sold
'91 944 S2, sold
'82 924S/931 "Gulf", sold
'84 924, turbocharged, sold.
http://www.facebook.com/vemsporsche |
|
Back to top |
|
|
morghen
Joined: 21 Jan 2005 Posts: 8884 Location: Romania
|
Posted: Wed Aug 01, 2012 4:45 pm Post subject: |
|
|
"i've looked into the internet" and it appears that the block was indeed used for LT vans and real old audis...however, i've never seen one in real life...even the old audis that i've seen had 5cyl diesel engines must have been a real production of these cars with these engines.
The bottom line is that we dont have a better head for the 924, this subject was discussed over and over again. _________________ https://www.the924.com |
|
Back to top |
|
|
McGyver
Joined: 24 Feb 2009 Posts: 354 Location: Jelenia Gora - Poland
|
Posted: Thu Aug 16, 2012 4:06 am Post subject: |
|
|
An early VW LT 28/31/35 Vans has that 2.0L engine... it's quite hard to find as most of this vans have Diesel engine too... but here you can see one of this VW engines in LT28:
_________________ 931 82' - 5000km after full engine rebuild
SOLD: 924 81' N/A- with turbo gearbox "dogleg" - great but mysterious car
www.mauser98k.internetdsl.pl - if someone like german rifles (English version avalible) |
|
Back to top |
|
|
RC
Joined: 25 Mar 2007 Posts: 2636 Location: Australia
|
Posted: Thu Aug 16, 2012 4:19 am Post subject: |
|
|
OMG, see something new every day.
First time ever seeing one of those.
Thanks for the insight McGyver. _________________ World`s quickest 924 2L slushbox
Allan @ DTA wrote: | I have no issue with superchargers, they are for guys who want to drive a car rather than talk about horsepower with their baseball cap on backwards |
|
|
Back to top |
|
|
McGyver
Joined: 24 Feb 2009 Posts: 354 Location: Jelenia Gora - Poland
|
Posted: Sat Aug 18, 2012 1:54 am Post subject: |
|
|
And some more:
_________________ 931 82' - 5000km after full engine rebuild
SOLD: 924 81' N/A- with turbo gearbox "dogleg" - great but mysterious car
www.mauser98k.internetdsl.pl - if someone like german rifles (English version avalible) |
|
Back to top |
|
|
Bockscar
Joined: 16 Nov 2010 Posts: 392 Location: Sandy, Oregon
|
Posted: Sat Aug 25, 2012 3:34 am Post subject: |
|
|
McGyver wrote: | An early VW LT 28/31/35 Vans has that 2.0L engine... it's quite hard to find as most of this vans have Diesel engine too... but here you can see one of this VW engines in LT28:
|
That's our little engine! It's almost a little embarrassing that the engine in our Porsche 924 is the same engine that is in a... VW LT Van.. _________________ Brian
'79 924 - Restoration In Progress
'81 924 Turbo w/EFI - Scrapped |
|
Back to top |
|
|
Mike9311
Joined: 14 Dec 2004 Posts: 1678 Location: Chicago-ish
|
Posted: Mon Oct 03, 2016 7:50 am Post subject: |
|
|
I realize this is an old topic but I have something to contribute
I bought a AMC head yeeaaars ago off ebay that was essentially a 924NA
The cam and lifters are in the '82 Turbo right now. Spare matched set, not damaged, lets use them in an engine we were not sure of since previous owner flattened the lobes...
The AMC valve cover was steel and I wish I never buggered it up
_________________ 1980 931 since 1989
1981 Ideola 931 Club Sport
1982 931 Entwicklungsfahrzeug
1979 924 NA ohne 650 mit 471
1982 931 Red Resurrection - 951 IC
1982 931 parts car / resurrection?
1980 924 NA (R&D lightweight)
1982 931 wana-be GTR race car |
|
Back to top |
|
|
|