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3.4/3.6 Turbo upgrade kit

Buy a 996 turbo. Not much more money when you consider fitting costs, Insurance issues. The mezger is a better lump and you could tune it further should you wish. Add in resale issues and it's a no brainer surely.
 
:agree:

MC
 
It would be an interesting project, I personally prefer the supercharger conversion as that gives something that's unique but either route I wouldn't want to upgrade without first freshening up the engine which are generally tired at 100k and that is quite expensive to do along with a few upgrades like forged rods.

Once you factor that in and the conversion cost you are surely into 996T turbo money unless you can find a cheap base car

But

There was a car for sale a couple of months ago with all the above done on a hartech rebuilt engine for about 14k, that would be a good deal :thumb:
 
Surprised engine doesn't have to have compression ratio reduced.

Especially to make that level of power they must be running a decent level of boost.
 
I wonder if it would to much stress the IMS with that much power :?:
Having said that.. buying a c4s at say £22k and that kit at $10,000... it's still a big saving on a 996t but.... :eek:ld: might not like it :lol:
 
paul987 said:
I wonder if it would to much stress the IMS with that much power :?:
Having said that.. buying a c4s at say £22k and that kit at $10,000... it's still a big saving on a 996t but.... :eek:ld: might not like it :lol:
Click to expand...

The IMS is supporting a shaft that drives the cams and oil pump - the amount of power produced at the crankshaft will have no effect whatsoever on the bearing life.

However open deck lokasil bores will not take too kindly to boost - nor will the 11:1 compression ratio. Fitting a turbocharger to such an engine will always be suboptimal.
 
I'd be very wary of applying boost to an engine that was never designed for it, I've seen far too many Volvo engines destroyed by running lean when in boost and either melting a piston or, blowing a rod out of the side of the block - sometimes both at the same time.

These engines don't like getting hot under normal circumstances, which would also be a concern, I also suspect that Porsche didn't decide that the engine needed a scoop on either side to feed air through the intercoolers simply because it looked cool.

As has been said, spend the cost of the upgrade on suspension and an engine rebuild and you'd have a much better car than one that has had this conversion. I suspect, anyway!
 
I don't think :eek:ld: really give a stuff. If you could turn a C4 in to a turbo by spending £7k it would have been done ages ago. If you could turn a C2 in to a GT2 for the same money it would have been mentioned. I think these cars are now at the stage where you enjoy them for what they are. You don't try to turn a C2 in to a GT3, or a C4 in to a turbo. The only exception seems to be that you still seem to push the Mezger as far as it will go until it goes bang. So all good there then.

MC
 
Dammit said:
MisterCorn said:
You don't try to turn a C2 in to a GT3

MC
Click to expand...

Erm, about that....
Click to expand...

Apologies, should have added something along the lines of 'nobody in their right mind would' or ''you would be stupid to' but I concede that as prices diverge the will to do so will grow ever stronger. The cost to do a priper job makes the people who want to convert an M3 to an M3 CSL seem almost sane though.

MC
 
I'm (mainly) joking, although I'm also doing a fairly effective job of not adding up the total cost of my engine build, but rather considering it in sections as it were - heads in column a, intake and exhaust in column b etc.

I'll end up with an engine that costs more than the car, of course, the question now is by what margin?
 
I believe Nine Excellence gave up trying to fit one of the TPS kits for a Porsche magazine a few years ago, it would be interesting to know what the problems were and whether later kits have improved that issue. There was obviously something that they didn't like or required too much money to correct negating the feasibility of the project.
I could see how a higher compression ratio and extra heat generation would increase service intervals and reduce the life of the engine.

I like the idea of a retrofit turbo on a closed deck refreshed engine with improved cooling though. My C2 is a keeper and I'd love to turn it into a special beastie one day when I have excess cash!

The idea of buying a 996T doesn't interest me and anyway if you were to buy a cheaper one it would be very easy to spend circa £10k at a specialist sorting out it's related problems (pinned pipes, low boost, kackered waste gates/ turbos etc) just to make it run properly as a standard car. Having said that I agree that the resale value would be much higher than modifying a NA car.
 
A tuned 996 turbo is a thing of joy. More than that, if ever you waver and wonder why cars should be fuelled by petrol you should get in to one. A tuned 996 turbo at 500hp is fantastic. At 650hp it is an absolute weapon. After that it is all totally pointless, but we can, so we do.

That said I love my C2 and probably drive it more than my turbo.

MC
 
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