mikes car looks factory and is largely factory parts i think the most cost effective option is big pump and injectors running e85 instead of de comping the motor .

 

I agree, Mike's is really well done AND on the E85 too.

 

if its the tuning that concerns you, your are welcome to all my tuning tables, they have taken me 6+ months serious road tuning time, it runs like a stock car but perfect on boost too, if you use the same EMS as me you can almost be turn-key....the unit will be about US$950 its an Aussie EMS & simple to use....

 

If you are interested I might sell my 16 valve heades together with 951 crossover pipe since I might go for SFR stage 2 headers. There in poin to swap to 8 valve head since you are going to run modest boost meanign that you dont face High egt or anything like this.. I can also sell you my 3.2mm headgasket since I am planning to use stock thickness headgasket myself and 11:1 CR and with modern fuel managements it will not be a problem to run 1 bar or 14.5 PSI with 11:1 CR I will insure you that.. With the turbo I have (gt35-40) it will make 450 hp in crank.

headers and crossover are wrapped to termotech and have hole to measure backpressure and have place for EGT sensor..


Markus

 

Marcus.....I might be interested in those headers.......send me a PM. Can you copy your intake manny as well for me?

 

Marcus from your experience what do you think a safe boost will be running the cometic 3.2mm, 951 rods, pump fuel.

The reason I ask is I have just bought some 951 rods for my 3.0 16v turbo and plan to install the cometic and those rods after xmas, I run 10psi at the moment on stock internals and 10.9:1

thanks
mike

 

its worth investigating if you have enough crown thickness to putt a few more cc's and the piston bowl and go with a 2mm gasket and if any one cares I'd sell one of my EMS's for 600

 

Arash, have you spent much time behind the wheel of a turbo car?

Although my car is currently making a decent amount of power, I have to say that the turbo lag is not much to my liking. Being used to driving a torquey bmw v8 for sporty driving for years until I got the 951 the lack of low end torque definitely takes some getting used to. I'd expect it would be the same on the 968.

Obviously the 3L will have more low end torque depending on how it ends up being set up, but you may still want to try driving around a turbo car for a bit beforehand to see if you like the turbo power band. I'll offer mine up, though I don't know when you'd have a chance to drive it.

 

errrrr um a standard turbo has more torque sooner than a 968 and a modified 951 with the little standard turbo has oodles of midrange grunt

 

If you aren't punching it or launching at somewhat high rpm (over 2k), I'm sure the 968 is able to get more torque.

(more noticable torque for around town/normal driving)

 

well my car has very similar grunt to my friends 968 at mild throttle 2k but i must thank the NA cam head work and exhaust. I would expect a maf would help too you only need about 3psi to be equal to a 3.0 and in a nice set up car with oem turbo you will get that 2100 rpm in the upper gears with not too much pedal . and it the lower gears who cares..
I can drive like an absolute lunatic around the streets shifting at 3200

 

I suppose my leaking exhaust crossover and still using the afm doesn't help in my case.

 

I have driven a 951 twice. Both times it was too short to really get a feel for it, but I understand the whole thing about lag. I have never driven or owned any other turbo (gasoline) cars, it's been NA my whole life. I can tell you the 968's dual resonance intake causes an effect similar to turbo lag and it SUCKS! I hate waiting for that gigantic damn manifold to fill up with air - I get no torque until at least 2000 rpm. But over 4000 rpm it's a different story, with lots of punch.

So while I would prefer to have raw natural power the best way to go about getting power is with a turbo. And since I already have an element of lag it won't be an issue to move to a system that has lag. If I were to use the 968 16v head with a turbo setup, I would definitely be elated to get rid of the 968 manifold, and I would have to bypass the variocam (unless I use an EMS).

There's a "problem" though. I just bought a 2.7 head last week...

Markus, I'm interested in the head gasket and headers/xover...

 

Everyone wants a free lunch and to be able to eat their cake! What most people miss the point on in my book is that a turbo should have a little lag otherwise why own one. If you want something with a totally linear powerband from 1000rpm, get a big block and off you go. If you want something that does take the enormously long time of, lets say, 2-3 seconds at most to then kick your *** to the next suburb then this is why we love the characteristic of a turbocharged car, or at least that's what I like. There are always means of reducing the lag, but I want something that takes my breath away and validates my addiction for the boost. I drove a supercharged MX5 or what you guys call a Miata, and this was on stock c/r and pretty low boost, and I thought the hand brake must have been on or someone disconnected the sparkplugs to number 3. I mean it drove ok and was pleasant enough little shopping car, but there was no excitement whatsoever.
If you keep the c/r high, run a good tune, even shorten your gearing, you won't have any lag that is worth talking about. Worrying that nothing is happening below 2000?? Man I standstill at higher rpms than that, let alone drive the ears off the thing. If you start increasing you h/g, well then you can up the boost and have some real fun. Come on in, join the party!

 

I agree with Patrick on the potential lack of lag, mine has high compression and 10psi, there is no lag just press the pedal and go, the S2 3 litre pulls very well anyway, then at 1800rpm it starts generating positive boost.....and away we go like a 5 litre V8 been stuffed in there, from 3000rpm to redline its breathtaking.

As a point of refererence I ride a GSX1300R Hayabusa so I do know what quick is.

Arash check out this link to the EMS, you can download the software and play with it for free. http://www.enginemanagementsystem.com/prod02.htm its called a Stinger4. If you want to discuss how easy PM me.

rgds
mike