NZ951

Was thinking about this today... the S2 is typically cheaper (well is there anyways). Doing an NA-T should net some pretty decent results. Maybe I am just out of touch with the S2 scene...

davepnola

I do not think we are thinking out of the box, around here ?? I like what Markus has done with that Yeager car. I am ordering my 3mm Cometic head gasket next week for my 968 turbo project. I will use Vario cam and use mostly the 951 components to get the job done. I think intake manifold, some welding on the exhaust flanges(crossover pipe) and good tuning are really the only extras that will be needed for a modest 10-12lbs boost setup for the 968 engine. I will change the rods, while I am going through the motor. But I bet if tuned properly and not spinnig the engine over 7k rpm the rods on the 968 engine would be suffecient. We will see. I will post on the build. Thanks

NZ951

I just see people going to great expense to build the 2.8 or the 3.0 8V. I cant help but think an S2 would be a better platform to start with... maybe people just jump straight to the 968 in that case I dont know. I would certainly start with the S2 as a basis over the Turbo if I was to go silly buggers again.

BlueRiver86

Probably because 951s are cheap and plentiful. I would imagine the work involved in a conversion is really not worth it when you can just go and "buy one"

NZ951

Conversion to turbo isnt that significant really, IC, pipes, hoses, turbo, x over pipe, oil feed, and harness and ECU, modify intake manifold, and possibly WG. Looking at the list of parts, how many look like ones many people modify with the turbo anyways? Looks like a few to me.

davepnola

When u have parts cars, makes life whole lot easier !! Heck you could pick up good running 951 with some miles for 3k or sometimes less. Parts car less than 2k and then you can sell the parts to make the difference.

Bullwings

I think a supercharger would be better than turbo.

You can still generate around 10-12 psi with a twin screw super charger and have much less lag. Your top end might not be as strong, but on the track (especially a tight one), it seems like a better choice - at least in my head it does. Super charging an N/A car is usually easier than turbo charging too.

As far as the logistics and reliability of the car afterwards, I have no clue. But, then again, how reliable is a highly modified 951? Probably not everyday driver, stop and go traffic, where 25 miles takes 1 hour kind of reliable... But we're not looking for that (at least I'm not) - that's what VWs, Hondas, Toyotas, Mini Coopers etc. etc. are for.

As for what it takes to make a turbo - it seems like you haven't seen the old 80's add by Porsche "What it takes to make a turbo." You'd most likely have to do some driveline/transmission upgrades to deal with all of that extra torque; modified 951s break that stuff already. You need a lot more than what you listed NZ951 - if you want it to last more than 500 miles and 3 clutch drops. And in the end, you just end up with a half-assed version of a 951 that's more expensive and less reliable.

Super charging seems like it would be more effective.

NZ951

Really, I missed some off the list? Like what?

How much boost on the stock compression of the S2 motor can you safely run? What are the S2 rods good for? Its all in the tuning at the end of the day. You can tune it to run a 100k miles if you want to. I dont know what driveline issues you are talking about, I havent seen many (none I can recall ever actually) failures at all on 400BHP+ 951's break CV's, Transaxles, Axles etc when not drag racing. And the S2 box has a bigger ring and pinion if I am not mistaken, and is an upgrade for 951's.

Bullwings

nvm, I was thinking regular 944, not s2 (that's what the old add was for too). As for stuff breaking, yeah, that's drag racing.

Still, I would rather see a super charged S2 rather than turbo - even with lower peak numbers you'd probably have a broader torque band. You can just get a a turbo-S if you want a turbo, and for cheaper too, unless of course you do the whole 3.0L route like you were mentioning.

CarbonRevo

There's a guy from Australia that just posted a Cab. he turbo'd, not too long ago. It's Guards red. Really clean install. I would love to do the install on my car, but I don't have those kinds of funds yet.

I'd rather go with a 88TS or an 89T and mod from there. Plus, on the 968 engines (correct me if I'm wrong), but isn't the vario-cam not turbo friendly?

Diver944

I can see what you mean NZ and it's something I've thought about, but when you look at that parts list to turbocharge an S2 it's surely much simpler to start with a Turbo and change the one component - the engine.

Add to that the fact that the Turbos already come with the bigger brakes, suspension and LSD as standard and I still think it's better to drop the bigger engine into a Turbo

NZ951

You can get M030 suspension on the S2, and the gearbox is better and can have LSD as option, LSD was not standard on the Turbo.

If you mean buying a Turbo for the options and using the 3.0 motor I get what you mean... I guess thats car specific though since most everything is an option! Unless you got the S or SE etc.

My point I guess is I see the expense in going 2.8 or 3.0 with sleeves etc and just think, see how an NA-T goes. I am doing this to my 4.0 1UZ with 10:1 compression. I expect to run 15psi all day long.

Duke

Not the 86-88 Turbo. Same brakes as the S2, non LSD etc.etc..

The only reason I see it why not more people turbocharge the S2 is at least here in Scandinavia for registrations reasons. A turbo'ed S2 will never pass inspection so you will have to remove the turbokit every year prior to inspection which would be a hassle, plus you could get into trouble in a flying inspection.

(Whereas a tuned 951 could still pass inspection.)

DVC

Can anyone substantiate this claim???

It's a shorter final drive, but are you trying to say it's stronger?

Diver944

Ooops sorry. I was being a bit insular and thinking of our UK market where we seem to have very few of the earlier 85-87 220bhp cars and lots more of the 87-92 250bhp cars