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McGyver · Posted: Thu Mar 26, 2009 10:37 pm Post subject: 924 to 931 conversion project...

What more is needed to make 931 from 924?
The best way is to swap engine of course

but I don't have enought money to buy it

I have already snailshell dogleg gearbox, cylinder block and oil pan swapped somehow directly from 931. So I want to use it... and rebuild 931 engine in original way.
I have completly assembled 931 1979 head (including distributor and sparks) with intake manifold (1981) and throttle body and some more parts (oil cooling system, alternator, pumps) in my workshop which i can use. I don't have injection system yet and much more

Maybe someone near (like UK/DE etc) have some parts for sell in good price? which can help me with this project

_________________
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)

ideola · Joined: 01 Oct 2004 Posts: 15550 Location: Spring Lake MI

In addition to the top end parts that you've already acquired, you'll also need the exhaust manifold, wastegate, turbo, complete CIS setup (the fuel distributor, WUR, AFM, and AAV), exhaust system from the wastegate/turbo back, clutch disc, pressure plate, bell housing, brake master cylinder, clutch master cylinder, clutch slave cylinder, and various associated bits with the clutch specific to the 931.

Check with ic932. He's in the UK, and I think he may have a lot of what you need.

P.S. Good luck. This is an ambitious effort.
_________________
erstwhile owner of just about every 924 variant ever made

ic932 · Joined: 11 Feb 2005 Posts: 1104 Location: UK

ic932 · Joined: 11 Feb 2005 Posts: 1104 Location: UK

Dan's got it right, it is an ambitious project.

McGyver · Posted: Sat Mar 28, 2009 9:48 pm Post subject:

I think it could take 3-4 years to complete, but it's all fun in it

Money it's not important if I have some

OK... I tried to check what pistons I have but nothing works. The only way to check it is take off the head and take a look

or find some verry small digital camera and put it in to spark plug hole... Right now i'm working on something like that, but its not to much space there so i can have problems with focus.
When I finish i let know what i found.
On cylinder block i found number 601 - factory nominal pistons. But if someone change it for somethin else and don't change that... who knows :/

Right now I'm working on this parts, and try to bring it to previous good working shape if it's needed:

I also try to find some parts here but is really impossible

I know only 2 and only 1 working 931 in Poland so this car here is extreme rare here, and get some parts even it not best condition is ... hard

_________________
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)

Raceboy · Joined: 01 Mar 2004 Posts: 2327 Location: Estonia, Europe

It's probably much easier to buy a wrecked or otherwise in bad shape 931 from US and import it as a parts car to Europe (it will cost around 1500usd for a car place in a container). You could get a running but rough shape 931 for 500-1500 range? There's some of those crappy 931's in Germany/Switzerland/Austria/Holland etc also.

That way you have ALL the parts you need and just imagine the time+money you'd be spending sourcing all the parts needed?

Or you can just boost your 924 and add a turbocharger+efi and you will have pretty much reliable 200hp with much better driveability than stock 931. all that for around the same amount of money that you would spend on parts.

And you can sell the 931 head to me

_________________
'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

McGyver · Posted: Sun Aug 02, 2009 6:14 am Post subject:

Fresh update

I change my plans with build 931 from 924. I found old 931 with 924 engine, and maybe gearbox... but I check it should be 25mm TT and clutch is hydraulic. Suspension is great, interior don't look fantastic and need some work or replace for original one.
I just want to take from my red 924 tail window, green spedometer, front hood and rest of guages and maybe carpets from trunk... And now i'm not sure about that gearbox... in 924 I have 931 gearbox and it's confirmed... in 931 someone put 924 dogleg -->VA00000 but I'm not sure about what is it... 931 or 924 gearbox?
New green one needs some work, but is still runing and I drive it back to home almost 500km so

it's quite good.
And after all I don't need 931 cluch and front brakes so I can sell it if someone need it.
That's what I've got right now (and that previous 931 parts):

_________________
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)

McGyver · Posted: Tue Dec 29, 2009 11:24 am Post subject:

It's time for some small update

After few months I almost finnish to make that green 931 run as it should. It still needs some work but now it's much better than was before. I welded all holes in floor wich was full of rust and other... $@$$#$ strange things

I replaced Dogleg gearbox from 924 to proper 931 G31 unit

so now only thing which is wrong is the engine. Clutch and TT and gearbox are from 931, suspension as well. Interior looks quite good, after refreshing it with new lether... I prefer original look even with scratches or small damages - but I hope to change it later.
I know now the original inside colours:
1982 GP = leatherette beige, seatinlays Pascha Velours beige-brown,
doortrims leatherette beige, roofliner brown, carpet beige

Maybe someone have photos how it should look ??

OK so now I have almost completed my wish list for engine parts...
The things I have to get now is:
J-pipe from exhaust manifold to wastegate
Exhaust pipe from manifold and wastegate to first silencer
Alternator mountings bracket
Series 1 turbo transistor ignition BOSCH module - is it the same in newer 924's??
And last thing... coolant expansion reservoar.
And all engine gaskets of course

Or I'll need Series 2 computer and ignition distributor... and transistor unit. If I want to rebuild it as it should be... series 2

Any help with missed things will be really BIG help for me!

And then I have complete 931 engine - collected from smallest parts separatelly - I think noone do this before

so propably I'll be the first

who build that engine without haveing even one part on start.

Right now I'm takeing care of wastegate & exhaust manifold (I can't find 931 unit for sale near so I decided to take 932 as spare until I get proper part)

Few photos from rebuild proces

_________________
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)

ideola · Joined: 01 Oct 2004 Posts: 15550 Location: Spring Lake MI

Awesome, nice progress!

To answer one of your questions, the 931 S1 ignition module is NOT the same as the NAs. I do still have an S1 931 unit available if you're interested. I also have an extra j-pipe or two lying around. I will be getting a complete 931 exhaust from Vaughan to sell on consignment, but I can't imagine the shipping cost on that to Poland!

Regarding the alternator bracket, which pieces do you need? I sold a complete setup to Scorpio not too long ago, so I'm not sure if I still have a complete assembly on hand, but I know I have some of the pieces...let me know specifically what you need.

Regarding the seals and gaskets, I can get you anything out of the PET catalog, including the complete crankcase and head gasket sets. You might also want to consider a Cometic gasket. I would also recommend picking up a new cam oiler elbow, and possibly the oil tube itself. The latter are on back order at the moment, but I have a couple coming in for some other guys later this week, so I know I can get them. Other things you might want too are fresh injector inserts and seals...

Let me know if I can help!
_________________
erstwhile owner of just about every 924 variant ever made

9xx · Joined: 18 Jun 2006 Posts: 627 Location: Jarvenpaa, Finland

Nein37 · Joined: 29 Dec 2009 Posts: 513 Location: New London, CT

McGyver would you be willing to sell one of the pairs of driving lights and rubber trim?
_________________
1981 931 CGT replica, OEM CGT intercooler, .8 BAR WG spring, GTS Headlights, Innovative Wide band A/F, A/C delete, 16" Fuchs, Weltmeister 200lb lowering springs, Bilstein HDs front, Koni Sport rears.

McGyver · Posted: Wed Dec 30, 2009 3:08 am Post subject:

Nein37 · Joined: 29 Dec 2009 Posts: 513 Location: New London, CT

The lights in the bumper, just the lights not the turn signals. Plus there are rubber trim pieces that cover the space between the lights and the turn signals.
_________________
1981 931 CGT replica, OEM CGT intercooler, .8 BAR WG spring, GTS Headlights, Innovative Wide band A/F, A/C delete, 16" Fuchs, Weltmeister 200lb lowering springs, Bilstein HDs front, Koni Sport rears.

McGyver · Posted: Thu Dec 31, 2009 5:01 am Post subject:

Ideola

I know you got all what I need

especially that Ignition module. But right now I can't find good way to make more money to buy it all, and shipping from USA cost a little more than anywhere here.
So I hope time for it will come

Nein37 - I don't want to disassemble my cars but I can ask around maybe someone got that lights and rubber trims

One guy here even make that rubber parts but I don't know he have any left.

Check this out too:
http://cgi.ebay.co.uk/PORSCHE-944-BUMPER-SPOTLIGHT-LATE-PLASTIC-TYPE-924-944_W0QQitemZ180448671592QQcmdZViewItemQQptZUK_CarsParts_Vehicles_CarParts_SM?hash=item2a03943768
_________________
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)

ideola · Joined: 01 Oct 2004 Posts: 15550 Location: Spring Lake MI

Totally understood! Let me know if you change your mind

_________________
erstwhile owner of just about every 924 variant ever made