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turbo upgrade help/advice
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NO RISK NO FUN  



Joined: 23 Jan 2007
Posts: 16
Location: Cheltenham

PostPosted: Wed Jan 24, 2007 7:09 am    Post subject: turbo upgrade help/advice Reply with quote

ive found a 924 turbo that is being broken Yippee! and want to stick the motor and turbo in my 924 its the law!, the waste gate is missing tho (will a dump value replace it?) and the exhast gone too..maybe use my old one?do they all have intercoolers as that must have gone too..bonnet has a scoupe on it..?any ideas?

The head has valve stuck in it and wedged bucket rammed in head think cambelt went wondering the best and cheepest way to fix it will it as can get it all for about 100 pounds and another hear for 65quid,was going to take the block pistonsairflow meter and everything i can find and shove it all in mine..I dont really know much about turbos starting to wonder the best cheepest options for more power! need a cheep head gasket too..etc..Adam
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924guy  



Joined: 29 Dec 2003
Posts: 2088
Location: Port St. Lucie, FL

PostPosted: Wed Jan 24, 2007 10:53 am    Post subject: Reply with quote

its not just a drop in replacement, doesnt work that way. just about every system that makes the turbo go, is different than the n/a 924 and will need to be changed over or modified. Not trying to rain on your parade, but be prepared to spend some major dollars and tackle some headaches if you really want to try this swap. But if you do get it done, please keep us posted on your progress
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Eric
78 924
82 931 SE "smokey"
99' VehiCross
Y2K Honda Insight
http://www.cardomain.com/id/924Guy
Performance by Pasha
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462avi  



Joined: 15 Sep 2006
Posts: 149
Location: Hollister, California

PostPosted: Wed Jan 24, 2007 12:49 pm    Post subject: Reply with quote

I am with 924Guy on this one. This topic has literally been beaten to death by non-turbo owners. There are some great mods that you can do to a N/A 924. For example install a 931 head, different cam, four carbs or individual throttle bodies. All I am say is better to use your money improving what you already have which is a running 924.

Geoff
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2002 grand cherokee with 4.7L
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Rasta Monsta  



Joined: 12 Jul 2006
Posts: 11733
Location: PacNW

PostPosted: Wed Jan 24, 2007 3:32 pm    Post subject: Reply with quote

462avi wrote:
This topic has literally been beaten to death


NO SEARCH NO INFO
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Toofah King Bad
  • WeiBe (1987 924S 2.5t) - 931 S3
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NO RISK NO FUN  



Joined: 23 Jan 2007
Posts: 16
Location: Cheltenham

PostPosted: Thu Jan 25, 2007 7:48 am    Post subject: yo yo yo Reply with quote

well well well so what happens next..

(a) i buy the turbo motor and spend the rest of my life trying to figure out how the f**k it works and wonder if id get more power from (b)alternative

(b)need more info on what head carbs and cam will fit my 924(is this more power than the turbo idea ?)or..

(c)(well it dosent starts very well anyway.. have swapped cold start valve, air flow and fuel metering valve) is the fuel relay inportant as its got a jump wire stuck in it with a normal grey 42 wiper relay thing in it)also had fuel pressure tested and its losing pressure really quickly when pump is switched off..HELP?

also its got a gas conversion too which seams to fire up better on..so do I have to take this off if i run a turbo (as its dirt cheep to run..!half the price of petrol!)
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CBass  



Joined: 03 Nov 2002
Posts: 2807
Location: Vancouver, Canada

PostPosted: Thu Jan 25, 2007 8:46 am    Post subject: Reply with quote

462avi wrote:
I am with 924Guy on this one. This topic has literally been beaten to death by non-turbo owners. There are some great mods that you can do to a N/A 924. For example install a 931 head, different cam, four carbs or individual throttle bodies. All I am say is better to use your money improving what you already have which is a running 924.

Geoff


Not to be a naysayer, but there aren't all that many graet mods to do with a NA 924. A 931 head is a major hurdle and requires a a complete engine rebuild anyways. Even so you're looking at maybe 160hp if you want driveability.

To swap in the turbo motor, you will NEED the complete engine, including fuel system, ignition system (unless you swap for standalone fuel injection). You'll need the exhaust as well, at least the downpipe, wastegate piping etc. The transmission and torque tube are different.

If you find a complete 931 and can steal all of the relevant parts, it IS a bolt in swap. There will be a few minor wiring differences The body shell is the same. Depending on the year of the cars in question, you may have troubles bolting up the 931 transmission to your rear suspension assembly.
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-nick  



Joined: 16 Nov 2002
Posts: 2699
Location: Cambridge, MA

PostPosted: Thu Jan 25, 2007 9:30 am    Post subject: Reply with quote

Converting to a hydralic clutch is NOT a bolt-in swap. Everybody always forgets about that in these discussions

You cannot swap a 931 engine into a 924n/a without addressing the clutch which is a significant hurdle.

Ever notice the number of posts starting off with "I can get a complete turbo engine, I just need to swap it out for my n/a engine"? Has anyone ever seen someone actually accomplish this?

Maybe it's time for a sticky...
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1980 931S
15psi boost, MS-II, EDIS, 951 IC, custom intake, Ford 5.0L throttle body, Forge BOV, WB o2, G31 w/LSD, 964 wheels, 968 rear sway, Bilsteins, 200# Welt. springs. A laptop, and a partridge in a pear tree.
1991 964 C4 Cabriolet
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Rasta Monsta  



Joined: 12 Jul 2006
Posts: 11733
Location: PacNW

PostPosted: Thu Jan 25, 2007 9:32 am    Post subject: Reply with quote

Nick, you're alive! Did you get the head on? What's up???
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  • WeiBe (1987 924S 2.5t) - 931 S3
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-nick  



Joined: 16 Nov 2002
Posts: 2699
Location: Cambridge, MA

PostPosted: Thu Jan 25, 2007 10:02 am    Post subject: Reply with quote

Too cold!
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1980 931S
15psi boost, MS-II, EDIS, 951 IC, custom intake, Ford 5.0L throttle body, Forge BOV, WB o2, G31 w/LSD, 964 wheels, 968 rear sway, Bilsteins, 200# Welt. springs. A laptop, and a partridge in a pear tree.
1991 964 C4 Cabriolet
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924guy  



Joined: 29 Dec 2003
Posts: 2088
Location: Port St. Lucie, FL

PostPosted: Thu Jan 25, 2007 11:00 am    Post subject: Reply with quote

supercharge the n/a 924.... nough said..
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Eric
78 924
82 931 SE "smokey"
99' VehiCross
Y2K Honda Insight
http://www.cardomain.com/id/924Guy
Performance by Pasha
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CBass  



Joined: 03 Nov 2002
Posts: 2807
Location: Vancouver, Canada

PostPosted: Thu Jan 25, 2007 12:55 pm    Post subject: Reply with quote

-nick wrote:
Converting to a hydralic clutch is NOT a bolt-in swap. Everybody always forgets about that in these discussions

You cannot swap a 931 engine into a 924n/a without addressing the clutch which is a significant hurdle.

Ever notice the number of posts starting off with "I can get a complete turbo engine, I just need to swap it out for my n/a engine"? Has anyone ever seen someone actually accomplish this?

Maybe it's time for a sticky...


Psshh, if you have a parts car you can take the whole clutch slave assembly, a little tack tack here and a tack tack here, here a tack, there a tack, you get the picture
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Raceboy  



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

PostPosted: Thu Jan 25, 2007 4:18 pm    Post subject: Reply with quote

I did the clutch conversion and most likely I'm going to do this again on the other car
Not an easy job, but doable. It requires a nice dremel tool together with a whole bunch of stuff from the donor car.
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'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.
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924guy  



Joined: 29 Dec 2003
Posts: 2088
Location: Port St. Lucie, FL

PostPosted: Thu Jan 25, 2007 10:18 pm    Post subject: Reply with quote

I was thinking about this a bit, and I beleive many people have the impression that this swap is like swapping a 260 cid small block olds for a 350 long block. flip the mounts and everything else just goes right in the way the old one came out besides a bit of fiddling with some cables.
what i was refering too above was the difficulty level. lets call a straight engine swap a one (same engine size/displacement.) adding an aftermarket turbo kit if you could find one (like an old BAE kit) would be a four maybe. building your own turbo kit or supercharger around a six or seven, depending on your knowledge and skills. doing a complete n/a to turbo would shoot it up to a eight or so i think, and then there using a different engine manufactureer, which id put at a difficulty level of ten being the most complicated. maybe that makes more sense here...

just trying to get across that these projects arent just a matter of swapping parts, they can get very invovled and before anyone starts, they should understand that and be prepared. most vehicles can be greatly improved with bolt on kits , the 924 isnt one of them when your talking hp gain imo. not that it cant be done, it just takes allot more dedication than a chevy would...
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Eric
78 924
82 931 SE "smokey"
99' VehiCross
Y2K Honda Insight
http://www.cardomain.com/id/924Guy
Performance by Pasha
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NO RISK NO FUN  



Joined: 23 Jan 2007
Posts: 16
Location: Cheltenham

PostPosted: Fri Feb 02, 2007 2:48 am    Post subject: 16 valve head?/turbo/Lpg Reply with quote

Any ideas on what head would fit my 924 if i want to use a 16 valve head and wear I can get bigger cams and which digital fuel injection system is best to convert and how its done ? also may run a turbo as well? and will it run on gas as it has lpg convertion ?
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81turbo  



Joined: 03 Nov 2002
Posts: 1065
Location: Oakland, CA

PostPosted: Fri Feb 02, 2007 3:05 am    Post subject: Reply with quote

Buy a different car.
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