tammons

I am sort of interested in building a 3L 16v turbo engine. I have fabed other turbo V8 setups before and setup a tec II and haltech on each so I dont feel I will be over my head fab wise.

My hypothetical question is. Would it be more cost effective or just better off to stuff a 3L 16 V turbocharged motor into a 951 or turbocharge a 968. I realize either would involve an engine tear down. Also it seems like a turbo 968 would be worth more than a 3L 951 for resale if I ever get tired of it.

I am talking about 500 hp min though, so I assume I would also need a different trans and a few other upgrades like clutch. Shame with that 6 speed and all.

NZ951

My vote is for a 968 turbo platform... everything is newer etc. Raj has done this...

AL951

A 968 would be the better starting point. It has all the updates and like NZ said, it is just newer. you will spend about the same anyway. Good lock and keep us updated!

Regards,
AL

fast951

Since you need the 3L engine, start with a 968.. You will need the 951 X-over, Engine mount, downpipe, Intercooler... You can use the 951 wiring harness and DME/KLR or just use the 968 electronics, but remapped for turbo application. In the end, the 968 will be unique and more valuable.

mark944turbo

You could start with a 944S2. The 951 crossover pipe isnt going to work is it? Getting a 968 is an expensive start.

fast951

The 951 X-over will need to be modifed to work with the 968 header. A custom intake is needed with any 16-V head.

mark944turbo

Thats what I thought, just making sure.

RolexNJ

tammons: I did some research and found some information that may help you. Before I went with my 951 3.0L 8V project, I actually wanted a 1995 968 and was then thinking about turbo charging it. I remember reading a very good article on this topic too.

I just look in my closet and found it. If you can, get a copy of Excellence February 2004. There is a great article that talks about 2 engine builders who did this with a 968. Both have two different approaches to it. One is www.andersonmotorworksinc.com and the other is www.powerhaus.com. I'm sure you know of both of them. Anyway, it's a very good article and will tell you what they did.

And I will have to agree with Fast951 on his one comment. Where he said it will be more unique and valuable, very good points. Anyway, I hope that information is useful to you.

Cheers,

tammons

If that was a yellow 968 with racing flares on it I saw the article, but it seems like it was older than that. I think that car was built by prototech or porsche tech down here. It had the intercooler right on top in front of the engine.

I can handle the exhaust side, and actually I would probably depart from the 951 hot side setup.

If I was going to go to the trouble of T'ing a 968 i would probably also run some TWM throttle bodies and a tec III.

tammons

Oh can a 968 transaxle handle some serious HP ??

fast951

Rumors has it that the 6-spd is much stronger than the 5-spd.

special tool

Guys - you have no idea the power that John has put through his 968 transaxle - leave it at that.

tconn

What would be the ballpark cost of building a 3L 16V that put out over 500hp?
One that would be reliable and durable .

fast951

A 3L 16V would set you back $10-20K easy (on top of the engine). It all depends on how much you do yourself, which component and which engine management you go with.
Easy break down, rough numbers, things can escalate at a very fast rate!!!
- Block prep (sleeve, pistons, rods): $3-4K
- Head prep: $1.5-4K
- Exhaust/Intake: $1-2.5K
- Turbo/WG: $$$$
- Standalone Engine management: $3-6K + Dyno tuning.. OR
- Motronic tuning/MAF.. $2K
- Engine rebuild parts/Misc: $2-3K
- Engine tear down/assembly labor: $$$$

These are rough numbers as a general rule, things can and WILL vary greatly. Contact your engine builder of choice for an accurate estimate.

Tom M'Guinn

If I were still in FLA, I'd probably would have gone the 968 route. Instead, I'll be putting an 8v 3 liter in my 86 951 so I can pass smog. The other issue on the 968 is the intercooler mounting location. Cost you ask? More than one could ever justify...if one felt compelled to justify it...