924Board.org

[Oysteinrb]

so here i am again. just going to ask a little question..

a friend of mine over here in norway bought a 931 a few months ago. he has this big engine overhaul project going on, and since he is going to pull the motor i thought i`d take a look at the crossmember and stuff like that.

anyway my question is; are the 924 and 931 identical in terms of xmember, motormounts and all that?

thanks

[Chrenan]

Yes.
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1987 951 - M193 Version for Japan

[924convert]

WOW I am so glad I finally joined this forum and found this post . Im already kneedeep in this transplant myself. Only differance is that Im using a '89 Turbo S engine and drivetrain and putting it into a 1980 924.

So far I have everything from the 951 except for the shell, this includes engine, crossmember and front suspension to the trans and rear suspension. Ive already torn apart some of the 951 engine, it was drowned and had water contamination after already being through an engine bay fire. So far everything looks wonderful, the bores are not scored, valves look good, I need to measure everything of course to make sure nothing is out of spec or warped from the fire. I flushed the oiling system just the other night, and now I should be getting involved with the crossmember into the 924. I have a Porsche workshop manual I bought online for 944's, and it has around 2000 pages alltogether with the turbo part included. Im going by the measurement points for frame and body alignment, so I can get the angles correct for the engine. and crossmember.

Ok so I think Ive filled everyone in enough on my situation, Oysteinrb.. feel free to ask me any questions you might have, Ive been researching this project the past few months and know quite alot about the differances between the 924 and 944 models. If anyone needs any info from the workshop manual, ask. I will be glad to look up anything I can for you

Im thankful that there is someone else out there that has done something like this, I was starting to get tired of the negative remarks and crap for trying this. But being my age, and having the funds I have from working, this is the best option I have since I cannot find a decent 944 turbo anywhere in my area. As an estimated cost so far, I spent around $3800 for everything from the 951 car. Since it did not include a turbo, intercooler, or anything else for that matter, I was glad I had bought a turbo kit a year ago for a car I no longer have right now. all of that including the turbo cost me $2500. Parts I purchased for the engine that needed replaced, has cost me about $1000 so far, and the 924 cost me a mere $800. So about $8100 into this so far, and another $2000 expected maybe. Cheaper than the ONLY $16000 944 turbo that was even 70 miles away. Modified 944 Turbo S engine and drivetrain into a lightweight 924, who could ask for more! OK Ive typed way too long now, time for me to go get some diesel for the heater. I will include some pics when I get my camera back from a friend.

[Peter_in_AU]

hey 924convert I hope you've been taking lots of photos of the conversion. We love photos.
_________________
1979 924 (Gone to a better place)
1974 Lotus 7 S4 "Big Valve" Twin-cam (waiting)
1982 924 (As featured on Wikipedia)

Learn to love your multimeter and may the search be with you

[Paul]

I would stop and find a 87 or 88 924S with a blown motor, since these cars already have the correct motor and tranny mounts.
_________________
White 87 924S "Ghost"
Silver 98 986 3.6l 320 HP "Frank N Stein"
White 01 986 "Christine"
Polar Silver 02 996TT. "Turbo"
Owned and repaired 924s since 1977
Porsche: It's not driving, it's therapy.

[924convert]

I wish I could do so, but Ive already gotten myself so deep into this there is no recovery for the money Ive shelled out, only joy when it is finished. Once I bought the 924, I saw a 85 944 for sale nearby but they wanted far too much than I could afford. Since then Ive looked for a 944 (while looking for a pickup lol) and havent seen but the one in detroit. Im going to finish this conversion like I planned, and try to get the engine and drivetrain in before spring so I can at least drive it.

Here are some pics taken with my cell phone a few weeks ago. Sorry if a few are blurry, detail sucks too but better than nothing I say. I need to take some more now since the progress has increased.



Engine is still in, almost ready to pull out.



Cute little thing isnt it?




Fender came off for more easy access.



Tadahhhh, no poor beaten up 160k+ 2.0 anymore.
OH BTW! all of the old parts will be going up for sale shortly when I get time to post again.

[Oysteinrb]

[CBass]

I plan on reinforcing the area where the crossmember attaches and using a fabricated crossmember with a 968 engine mounted in the factory style using original mounts. This will be part of a comprehensive drive to make the body structure more rigid via seam welding. All underbody coating will be removed first, then I'll be spraying the underside with epoxy primer and truck bed liner.
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'81 931 in various states of assembly

[Oysteinrb]

remember to take lots of pics!

[FRporscheman]

Wow, you have my respect for doing this project. I didn't know the 924 had different motor mounting design than a 944 or 968. That actually sucks.
_________________
'93 968
'84 944
82 MB 300td

[Oysteinrb]

hello again.

i was in my workshop yesterday and got a little bit of work done. just thought i'd upload some pics of my project...

this is where the supercharger will sit (looks like the best spot so far anyway...)



my friend helping out a bit.


i have also thought a lot about moving the radiator to the trunk since the supercharger will add some weight to the front, and i need space for an intercooler...

here is where i was thinking of making some kind of intake. of course on both sides and somehow shielded from dirt and stuff...


and here is about where i was thinking of placing the rad, hoses, fan and all that:


i am thinking about letting the air escape somewhere under the bumper or something like that. pipes will be laid along the channels (beneath the door on the inside of the car. dont remember the english word for it). suggestions are welcome!

by the way, what is this thingy...?


oh, and a last question, would it be ok to "disconnect" the balance axels? i guess that would give me a bit more hp, right? i dont give a damn about vibrations since this will mostly be a fun track car..

thanks

Oeystein

[20v924]

Dyno results dont give this mod any validity. On spec motors we only gained 1 hp.

Back to the swap,
First, make 1/4" thick plates for the 944 mounts to bolt to in the shape of a football. Weld 2" tubing 2"long to the plates on the bottom and put the motor in the car. The mounts you just made will rest diectly on top of the 924 crossmember. clean the metal and weld.
Motor mounted!!
_________________
A person is smart. People are stupid

[20v924]

this makes the motor solid but it is the most diect way. You will effectivly be making solid mounts for a 944 that dont bolt to the crossmember. they weld to the 924 steel crossmember. The 2" long pipe can be shorter if you want a lower motor, but beware the hieght of the oil pan.
_________________
A person is smart. People are stupid

[special-tool]

Oysteinrb - that is the head temperature sensor.
There are 2 of them:
The one you circled is used by the Motronic - note the Bosch connector
The sensor 3 in ches behind it is ALSO a head temperature sensor, but this one is used only for guages.

Behind them at the same height between #2 and #3, you will see a heat shield.
This hides 2 threaded bosses. The rear one is used for the knock sensor on the later 951.
If you are to use 951 Motronic for your supercharger car, you will have knock sensing.

-Lutjen
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951 566/485 HP/TQ at the wheels - pump gas
924S GTR conversion project
Honda 250R- PWK 35mm flat slide, 205 static, Boyesen, Wiseco, DG front/back, Uni, 14/42,

[Peter_in_AU]

20v924, doesn't that mounting method just take us back to the discussion about whether the crossmember mounts are capable of supporting the weight of the motor?

What's your input on this?
_________________
1979 924 (Gone to a better place)
1974 Lotus 7 S4 "Big Valve" Twin-cam (waiting)
1982 924 (As featured on Wikipedia)

Learn to love your multimeter and may the search be with you