Converting a 3.6 to a Turbo

[SAY - 642]

I'm curious what this would cost? Already have all the suspension brakes etc done on my 87.

Engine is out. 993 95 3.6 engine non VarioRam G-50

What would it cost to convert to turbo power.

[x98boardwell]

Well, for starters you will need to change the compression ratio if you want to run any kind of legitimate boost. Otherwise, you will be limited greatly which would make the expense not worth it. There are a ton of things that would need to be completed to convert.

Before we go into the change have you ever given thought to super charging it? This would be less expensive and essentially a "bolt up" option... meaning not much modification needed and definitely not an engine drop.

Thoughts?

Bryan

[SAY - 642]

Hi, Bryan:

Thank-you for your reply. I'm pretty keen on turbo charging.

Engine is already having new cams and heads ported for larger valves.

Maybe some 993 turbo pistons are in order....modify the crank, new ARP rod bolts?

This build was not too expensive:

Turbocharged My 3.2L Carrera! $2450 for the necessary new/used parts to turbocharge

[Rodsrsr]

I think the 3.2 is the last generation that will allow any type of bolt on forced air induction due to its 9.5:1 compression ratio and even then the boost levels are modest. The main cost in your build will new pistons. Supercharging is not an option either because boost is boost and the compression ratio of the 3.6 is just to high. However, a boosted 3.6 would be a whole lot of fun.

[SAY - 642]

I guess 993 twin turbo pistons go anywhere from 4k to 6k.

Has anybody on here done this PowerHaus conversion:

3.6L Carrera Bolt-On Turbo Conversion Stage l

PowerHaus now offers a Turbo conversion for all 993 model Porsches. This package is ideal for the 993 owner seeking the maximum performance from their Porsche without disassembling the engine.

By our turbocharging your Porsche, you can achieve more power, torque, reliability, and drivability than any high performance non-turbo street motor, including the European 993 3.8L RS.
Major components included in the PH Turbo Conversion:
PowerHaus Turbo Exhaust System (complete system)
Custom Turbocharger
Dual-port high performance wastegate
PH air intake conversion with K&N filter
PH oil scavenging system & braided oil lines
PH custom aluminum intercooler
Bosch boost recirculation valve system
PH custom engine management software & fuel injection modifications


The engine will produce approximately 100 more horsepower and 100 lb/ft more torque, depending on boost pressure, up to a maximum of 381 horsepower to the wheels. (these cars are rated up to 282HP & 250lb/ft at the flywheel, ours tested 234.4 to the wheels stock.) There is no turbo “lag”, just power and performance. PowerHaus tests all vehicles on a dynojet 248c chassis dynamometer before and after every Turbo Conversion.

[Jim2]

Have a look at TPC. They used to offer turbo systems for NA 993 as well as the supercharger kits in the following link.

Porsche 964 and 993 Supercharger Kit - TPC Racing

I've turbo'ed my 993 and I did a little investigation into using TT pistons/cylinders only to discover you need the TT heads. I found there are few 930 compatible parts to building the turbo system.

To make the high compression NA engine live with boost needs trickery. Downright tough to overcome.

[SAY - 642]

Hi. Jim: Thanx for your post. I have followed your builds with great admiration.

It would not seem cost effective, until the 3.6 needs to be rebuilt.

Even with a supercharger you would need to tighten up the bottom end, to do it right.

[sheriong]

I am currently building a low boost twin turbocharger using some KKK16.The car i
s a 1993 964. Figure if I can keep some of the cost down, the increase HP should be worth it.

Good luck

biggles

[Tilikum Turbo]

Probably will cost more to turbo-charge a non-turbo engine(which wasn't designed or engineered from the factory for forced induction), then to just sell the current engine, and put that $$$ towards a real factory turbo motor.

Anyone can build a motor which produces prodigeous amount of HP. I trust the Porsche engineers to do a much better job in R&D than my very limited scope performing engine modifications.

[SAY - 642]

I'm on the look out for one of these now. But if memory serves me, even these twins have known issues. I can't recall.....

[911TT33]

Any update on this ?

[petri]

I think RUF did 964 RCT Turbo before factory made 964 Turbo itself.
I read some test of them in 911 World Mag by one owner having both of them.

I've understood (please redirect me, if I'm wrong):
RUF RCT application was made on standard 964 engine with standard internals.
RUF RCT Evo was made with different camshafts, pistons and heads.

RCT standard was capable of 380 hp with RUF reworked Motronic box, KKK7200 turbo and intercooler.

RUF RCT Evo info & photos needed - Rennlist Discussion Forums

I have considered to do something like this to my 964 3.6 engined car, this one in Nürburgring in September, still underpowered:







I have already some RUF BTR stuff left over from my other project (which actually had RUF BTR engine in it, before we started to rework that one further) like complete RUF intercooler with lines, Turbo fitting exhaust lines, exhaust muffler for 2 outlets. Only missing part is that KKK turbo and RUF Motronic box. If I will find this setup not satisfying enough, I do have some extra set of RUF BTR 3,4 pistons and cylinders in stock.
This car just got Big Reds this spring and is now under coil over alteration with SRP swaybars. As you can see, in these pics suspension really dives...

[petri]

RUF RCT setup:








This setup I have free: pic from 2005 when it still was in my Green: