924Board.org

Cedric · Joined: 27 Aug 2004 Posts: 2809 Location: Sweden

Im very impressed, hope that you will get at full dyno sheet on that engine soon....
But how about the oil temp ? the 924 doesnt have an oilcooler and with 150-170hp at a trackday it must get very hot, so i wonder if you have a planned solution or if its okay just to drive with a high qualtiy oil..

/Cédric Nyberg
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1980 924 Turbo
www.instagram.com/garagecedric/

indi9xx · Joined: 01 Nov 2003 Posts: 83 Location: Bournemouth, UK

Due to the design of the engine, in particular the size of the head and the size of the sump, 924's do not tend to have problems with oil cooling.

In the past I have found that adding oil coolers to 924's result in too low an oil tempreture... fitting a stat into the cooler lines will stop this, but the oil circulates through the stat so rarely (because its not often needed) that the oil cooler is just along for the ride.

For performance the best coolant tempreture is about 85 degrees celcius, which for our american cousins is about 185 degrees F.

The ideal tempreture for most performance oils is in the area of 95 degrees celcius, which is about 203 degrees F.

What this means is, once the engine oil starts to raise above its ideal tempreture, its difference with tempreture of the coolant, allows for the oil to start dumping its heat via the coolant in the block and head.

So in short, as long as your cooling system is up to scratch, the engine will be fine without expensive oil cooling.. However, if you want an oil cooler, we can provide one!

It must be said though, my experience of 924's and the track is limited to european weather conditions, not some of the conditions found in the USA. Having said this though, I do have experience of other Porsche vehicles being used in competition in the middle east, and would expect the 924's cooling system, if in good condition to be fine there as well.

924 Turbo oil cooling though is another matter, and one that needs addressing for track work.
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Jon Mitchell
Independent Porsche Specialist
Bournemouth, UK

My924gtc · Joined: 14 Aug 2004 Posts: 1362 Location: 248

and five... and six

Glad to hear from a couple more willing participants...and you know who you are.
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MJ
'81 924 2.0L T
'82 924 2.3L SC/EFI <---online fall '06

Sponsor of the 944 Cup and Super Cup
Sponsor of the "2006 Battle in the Badlands"

felony4th · Joined: 17 Jan 2004 Posts: 50 Location: Dayton, Ohio

I am IN. Keep this topic going.

A company called PAECO Industries makes a stroker KIT for our 2.0 motor. Their website is next to useless- they really want you to order their paper catalog.

I believe a stroker w/ forged pistons, a stage 1-ish camshaft with some higher-durability valvetrain parts, this magic head, high-flow breath/exhale, and some way to get more fuel.....

I don't want a wild cam OR super-high compression... mmm, durability.

My924gtc · Joined: 14 Aug 2004 Posts: 1362 Location: 248

felony4th · Joined: 17 Jan 2004 Posts: 50 Location: Dayton, Ohio

drooling in Dayton, OH. (US)

I still have to go back and read this entire thread.

'81 924 Weissach edition- needs to go on a diet.. 3200 lbs is way too much for 100 hp.

My924gtc · Joined: 14 Aug 2004 Posts: 1362 Location: 248

Excellent.

Shoot me an email or PM once you are up to speed.
_________________
MJ
'81 924 2.0L T
'82 924 2.3L SC/EFI <---online fall '06

Sponsor of the 944 Cup and Super Cup
Sponsor of the "2006 Battle in the Badlands"

My924gtc · Joined: 14 Aug 2004 Posts: 1362 Location: 248

Looking to set up an online session with everyone interested in the NA group buy. More than likely it will be done by BBS so we can do it privately in a format we are all familiar with. Still looking for the best and least expensive way to host such a meeting.

Everyone who is interested please send me an email stuttgartmark@aol.com so I have addys and we can get together and plan our shipment detalils.

Please do this by the 9th, we are getting closer to "go time" and would like to get things sorted sooner rather than later.

Thanks guys!

Mark

My924gtc · Joined: 14 Aug 2004 Posts: 1362 Location: 248

Jon, you've got mail.

And so do the rest of you involved.
_________________
MJ
'81 924 2.0L T
'82 924 2.3L SC/EFI <---online fall '06

Sponsor of the 944 Cup and Super Cup
Sponsor of the "2006 Battle in the Badlands"

MALUKIA3 · Joined: 13 Dec 2003 Posts: 82 Location: NY

Hi,

I've been following along and have gone through the thread many times. Can someone please provide a synopsis of the options, performance gains, costs, shipping etc.

I would love to sign up based on what I've been able to piece together but am a little reluctant to have my car out of commission for months based on bits and pieces w/ many parties involved.

Just the facts please!

Anyone thought of being a guinea pig? Everyone interested pitches in with the shipping for a single head (car owner pays for the head/mods to his head). Head installed, local tests, dyno runs etc. Befor we all jump in w/ both feet? I admire and want to thank those involved for all the hard work and thought that's been put into this. Call me a pessimist - kind of amazed that it's taken 20+ years for someone to figure out that you can get big gains from a stock 924na.

Don

Lizard · Posted: Fri Oct 15, 2004 4:30 am Post subject:

MALUKIA3, i recommend that you do abit more in depth reading of this entire thread, it does list his prices, and the total shipping cost of 10 heads, and Mark states something about the heads and not being out of commision, also as far as dyno runs, this has been asked MANY times in the thread and answered on a couple of occasions, so best be re-reading.
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3 928s,

indi9xx · Joined: 01 Nov 2003 Posts: 83 Location: Bournemouth, UK

The group buy will now not be happening, and our heads will not be made available to the US.

It has been made obvious that one of the persons involved in the group buy, only wanted a cylinder head to duplicate. We are not going to allow this to happen.

We put years of work into the development of these cylinder heads, and we are not going to give the technology away.

Cylinder heads will initially only be available to customers in the UK, on a supply and fit basis. Interested parties will be given the chance to experience a 924 with our cylinder heads, access to dyno proof, to reference contact details and to be able to talk to happy customers. But we will only sell these heads to persons who we believe want them for their 924, not to people who we believe want to steal our technology.
_________________
Jon Mitchell
Independent Porsche Specialist
Bournemouth, UK

Jazzerpet · Joined: 07 Apr 2003 Posts: 186 Location: Omaha, NE.

Really!…….Hum……….Oh Well.
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1980 931
1985 ½ 944
Member of the “Omaha Crew”

My924gtc · Joined: 14 Aug 2004 Posts: 1362 Location: 248

It was certainly made clear that the group as a whole wanted some degree of assurance that it was not going through trouble only to have nothing in the end.

Jon, if you would respond in a timely manner to questions you would not envoke so many annoying comments. Things would just get done, and people would just do what they say they are going to.

This is a post that I can't wait to see drop off the radar.
_________________
MJ
'81 924 2.0L T
'82 924 2.3L SC/EFI <---online fall '06

Sponsor of the 944 Cup and Super Cup
Sponsor of the "2006 Battle in the Badlands"

Neil924 · Joined: 18 Mar 2003 Posts: 4225 Location: Canada

You guys are killing me! I read the first few posts and thought, "this is crazy, no way". Then it seemed to be an actual idea that could work. I told myself "I have put too much into my car already, no way". I read a PM from someone in this thread, and I started thinking "It seems to be a good idea." Then I read and reread this thread, and on the verge of making a positive choice, someone is going to rip this idea off?!?! WTF!? Tell us who, so the nearest man to him can smack him around.
575 GB Pounds right now is about $1,300 Canadian {$1,000 US}. It's a high price for work that isn't needed, but I would do it in a hearbeat for $700 so why not add $600 and be done. It's only a paycheque.