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Finding a way to turbo my 3.2

Hey whats up guys I'm new to this website. I finally got my 1988 911 3.2 out of the garage after its been there for almost 5 years. I've been driving it alot now, pretty much as a daily driver now. I've gotten to love these Porsche 911 very much. Don't get me wrong the 3.2 motor is fast but i recently drove my friends 930 turbo with many mods to it, and wow was it fast. I wanna find a way to turbo my 3.2 safely. Not looking to push any crazy numbers on the dyno just a lil more power out of her and enough to not effect the motor in anyway. The only thing is I'm not sure on if this is possible and if it is what route should i take on doing this and what psi would be safe for this motor. Thanks
Old 11-07-2007, 08:58 PM
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It is possible!
http://www.geocities.com/protomotive/
The link is down at the moment but I'm sure it will be back up again soon.
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1981 UK 930. G50/01 shortened, 964 3.8RS Fibreglass Body Kit, 18" Alloys 8.5" F & 10" R, 225's F & 285's R, Special Colour Metallic Blue Paint, FIA Sparco Evo's, A/C and Air Pump removed, Electronic Boost Controller, GHL Headers, Tial46 WG.
Fitting - New service kit.
Needs Fitting - Innovate XD-16 Kit, Kokeln IC. Stephen's K27 HFS, EVO Intake Assy & his Modded USA Fuel Head.

1983 UK 911 3.2 Carrera Sport Coupe. Black, Black Leather with Red Piping, Black Alloy Gear Knob, K&N Air Filter Element, Turbo Tie rods.
Needs Fitting - K&N CO Sensor, Round A/F Dial Gauge, Factory Short Shift Kit.

http://www.danasoft.com/sig/Iamnotanumber.jpg
Old 11-08-2007, 01:18 PM
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ya, it's possible

oh, 4 5 6 and 7 bar. I like 6, I think thats 8 and half or so psi
Old 11-08-2007, 02:49 PM
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Lots of guys here with 3.2 turbos. I would think the Motronic would be easier than the CIS route I took. My 3.0 with the turbo will dust the 3.2 n/a Carreras at the track. You won't get 930 power, but your increase will be substantial and quite noticeable.
Pat
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Old 11-08-2007, 05:15 PM
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Quote:
Originally Posted by jbrinkley View Post
ya, it's possible

oh, 4 5 6 and 7 bar. I like 6, I think thats 8 and half or so psi

Do you mean .4 .5. 6 and .7 bar??? 6 bar of boost is ALOT of boost! About 90psi
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Old 11-08-2007, 05:25 PM
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of course
Old 11-09-2007, 04:02 AM
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Thanks guys for the help. I'll just have to get some money together and start on my project. If anyone know of any other site that I can look at or kits or w/e please let me know. Thank you
Old 11-09-2007, 02:09 PM
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I think you could get some really nice power on a 3.2 if you did something like a set of k-24s or if you want a single somthing like a k-28 or k-29. The reason a recommend these turbos because you can't run big boost, but if you run a bigger turbo(s) at low boost (4-5 Psi) you could get nice power and hopefully reliability. And the bigger turbos wont have too much of a problem spooling because the engine has higher compression than the 930s do, so the N/A power will carry you untill boost + the greater exhaust-gas-expansion will spin the turbos quicker.
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Old 11-09-2007, 08:46 PM
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Thanks for the turbo options but the question is how would i go upon doing this and how much am i looking to spend on this?
Old 11-09-2007, 09:51 PM
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Welcome. Kits are available at a couple of vendors.

You have to rebuild your motor and get an intercooler. Who is your builder/machinist? Have you spoken to him about his recomendations/estimate?

You can expect your prices to be 10k to 50k depending on your builder's choice of parts and how many hours labor he charges you.

We can refer you to very good builders/machinists in your area, and to vendors if you are going to do it yourself. Online you can start at goingsuperfast.com and progress to imagineauto.com

Have you thought about a budget?

Good luck and have fun!
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Old 11-10-2007, 12:00 AM
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Oh your going to blow a little coin...
You could piece together some manifolds or just buy a B&B set for between 500$ - 2000$
Turbo(s) for about 500$ to 1500$
Intercooler nice one from bell intercoolers about a grand give or take(give) 300$ depending on what you ask for- or a Goingsuperfast I/c for under 1000$ that will get the job done
Misc. plumbing piping about 500 depending on how good you are with minor fab work.
Im not sure what route you would want to go for tuning, I think Protomotive sells a computer upgrade for your stock motronics from blow through mass air to full pressure sensing. I think the blow through programing costs somewhere in the 2 grand range, but I am unsure since its been so long since I inquired about the cost.
All of these prices are high estimate/approximates. You could probley do better if you were more patient than I in finding your parts and not opperating on a timeline.
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Last edited by 930gt-40r; 11-10-2007 at 06:27 AM.. Reason: becuase I rock
Old 11-10-2007, 06:24 AM
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Breyes, I think he could get away with low boost on that motor without low comp. pistons or a set of rods. If he wants to do a low boost set up for now and then go crazy someday thats cool.
4-5 psi of properly tuned boost never killed anyone.
Don't scare the poor guy...
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2008 C6/Z51 Corvette

Last edited by 930gt-40r; 11-10-2007 at 06:29 AM.. Reason: see my last reason...
Old 11-10-2007, 06:27 AM
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Well, a street only car doesn't need an intercooler. Track car is a different animal altogether, although I have seen non-intercooled Promotive installs at the track. If you run a relatively small pressure ratio (ie 5 PSI or so), you don't need a rebuild on the engine (providing it is in good condition to start with). If your engine is not in good condition, then you are starting to look at serious money...rebuild plus turbo...at which point you may want to consider 3.6 swap instead of a turbo. The stock Motronic pistons will be OK. You can probably find some used plumbing and maybe a decent Garrett turbo on the cheap if you keep your eyes open for it...lots of guys start out with turbo projects and give up after awhile.

It is a lot of work, and a lot of headaches, and there are about fifty things which will not go well and take up a lot of time. The end result will be maybe in the 250RWHP range, so you will essentially end up with peak 3.6 HP without the broad 3.6 torque curve.

Pat
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Old 11-10-2007, 07:26 AM
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Steve Timmins at instant-g.com will put a 3.6 engine in your car for about $10-14 grand. He will go through the engine and make sure it is running good and strong and he will do the whole conversion.

You will be more happy with that then a low boost turbo, and you can sell your engine. You can get close to 300 hp that way.

Go for it and thank me later. LOL.

If you have the latest issue of Excellence magazine, Timmins did the blue iroc car.
Old 11-10-2007, 07:46 AM
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you guys make it sound like it's a big huge headache? and that it's thousands upon thousands of dollars, I don't get it.
Old 11-10-2007, 07:55 AM
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I too think 4-5 lbs of boost on a stock motor will be fine as long as it's tuned conservatively and intercooled. One said intercooling on a street motor is not necessary but some intercooling is better than none especially if you're running a CR above 8.5:1. It wouldn't take anything but a bad batch of gas to promote knock and the intercooler at the very least gives you a small cushion with the cooler air charge.
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Old 11-10-2007, 08:55 AM
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Quote:
Originally Posted by jbrinkley View Post
you guys make it sound like it's a big huge headache? and that it's thousands upon thousands of dollars, I don't get it.
Thats kind of what I was thinking. If you are do it yourselfer you can do it for about 5 g's total about what you figure jerry?
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Old 11-10-2007, 01:41 PM
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Quote:
You won't get 930 power, but your increase will be substantial and quite noticeable.
From what I've read and been told, stock 930 power is achieved with only .5bar on a 3.2.

I have been planning my turbo 3.2 for about 6 months and the first stage is going to be very simple and cheap, about $3500. I'm only starting off with .5bar with the following parts.

• 930 J-pipe (sourced for $150US and bolts straight onto Existing heat exchangers)
• 930 Muffler ($250US 2nd hand)
• Garrett Gt30R Turbo and oil plumbing ($1400US)
• Protomotive Turbo Chip and Fuel Pressure Regulator ($700US)
• Charge pipe Fabricated (about $300)
• Tial Wastegate ($500)
• Blow off Valve ($200)
Total $3500

I'm sure there will be odds and ends I will need along the way such as welding different flanges on the jpipe and muffler but nothing too major.

I can't take praise for the design of this simple kit, Merv (WydRyd) divised it.

I just want to get it up and running as simply as possible then I can slowly upgrade to an intercooler, headers, MAP, more boost etc.
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Old 11-10-2007, 05:08 PM
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I don't speak from experience or from reading posts about this as I have no interest in doing this (my 3.2 has a 915). But common sense tells me this is too much boost pressure without an IC or race gas or water injection.
I may be wrong, I hope others that do actually know will comment for you. Don't want anyone to blow their engine up.
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1981 UK 930. G50/01 shortened, 964 3.8RS Fibreglass Body Kit, 18" Alloys 8.5" F & 10" R, 225's F & 285's R, Special Colour Metallic Blue Paint, FIA Sparco Evo's, A/C and Air Pump removed, Electronic Boost Controller, GHL Headers, Tial46 WG.
Fitting - New service kit.
Needs Fitting - Innovate XD-16 Kit, Kokeln IC. Stephen's K27 HFS, EVO Intake Assy & his Modded USA Fuel Head.

1983 UK 911 3.2 Carrera Sport Coupe. Black, Black Leather with Red Piping, Black Alloy Gear Knob, K&N Air Filter Element, Turbo Tie rods.
Needs Fitting - K&N CO Sensor, Round A/F Dial Gauge, Factory Short Shift Kit.

http://www.danasoft.com/sig/Iamnotanumber.jpg

Last edited by NathanUK; 11-10-2007 at 05:25 PM..
Old 11-10-2007, 05:18 PM
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How much boost are you saying is too much?

The general consensus from the experienced is .7bar max which according to protomotive with headers will get you 400hp. Sounds a little ambitious but a member of the forum (wydryd) installed that very kit and acheived those numbers on a dyno, he also drove it to work everyday for a long time without any problems.
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Old 11-10-2007, 05:26 PM
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