SC to TURBO POWAR! I hate you RAWKS

[Geronimo]

This is be my on going reservoir to capture all that I learn in one place. I have for better or worse succumb to Rawks endless pressure (see what I did there).

So far I have come up with a rough list as follows...

Rarlyl8 headers
oil drip tank
gt35r or other
BOV Tial/blitz
Zork Tube
Intercooler and pipes and mount bracket (fab)
silicon hoses
turbokraft oil feed kit
oil scavanger remote turbowerx pump ?
braided oil lines
Oil line fittings
linkage for 3.2 manifold
Turbokraft 3.0-3.2 intake adaptors
turbokraft TPS and CHT sensors
IAT sensor
AF gauge
Boost gauge (OEM 930 speedo?)
Crank trigger
Trigger wheel/pulley
Injectors
COP
FPR
930 WUR or other
knock sensor
Oil sump return modification
Stand alone ECU (not sure which yet MS because its very affordable and lots of support)

This is what I have cobbled together based on threads I have been reading.

My plan is to get a pile of parts when deals are available. I plan to focus on getting the 3.2 intake working NA first to sort any issues and have a running stand alone EFI set up before I add the turbo.

I have 3 broken head studs, so I want to replace those first and make sure the engine is good as it sits. I plan a future rebuild to set it up for boost properly.

Please have a look at the list and point on things I have missed or thing that I may have over complicated.

thank for the help, i'll be leaning on you heavily.

[Lyle O]

A big question for you is what will you do with your pistons: will you stay with 9.3:1 stock, or go with lower compression? Going to lower compression will allow higher boost, etc. (and could affect the turbo you choose). Also, you need an intercooler; TurboKraft can help you here. If you want to stay with your duck, they have an option for you. If you want to go big, you will need a 930 tail...
Just a few thoughts...welcome to the dark side...

[Geronimo]

Ill start with the stock compression set the system sorted and running then pull and rebuild probably 8.5:1

I intend to sell the very fresh 915 and get a short 930 trans... if i'm going to do it I want some real power.

Yea, I will get a nice full bay IC, with all the intercoolers in the world finding and fitting one shouldn't be to hard. I can't see paying Turbokraft money for one, i'm sure they are very nice, but i'll try to avoid Porsche tax where I can.

I'm thinking that I will ditch the duck in favor of a whale or early turbo wing, not a fan of the typical 930 tail on a narrow car.

I'm trying to think of it in compartments,

Hard parts
Electronics
Fuel

It helps me get my head around the complexity. I figure this will be a few years endeavor, this year is parts collection.

Next year is fix the head studs, make sure the engine is solid and fit the 3.2 intake and EFI

Year 2 will be add the turbo and get it sorted out for low boost.

Year 3 swap the 915 for 930SBH

Year 4 rebuild for high boost

Year 5 930 steel body

This is my rough general plan...

[jons911]

Ha, we won! You've got a pretty good list going already. The one thing that I quickly noticed is missing is your fuel system. You have a FPR, but nothing about injectors, pump, or fuel lines and rails.

Since you plan on making some bigger power down the line, you might as well just get the injectors you'll need and not worry about resizing later. Plus, modern injectors don't really have the same problem at low pulse widths that older injectors did. I have 1050cc injectors which run at around 10-15% just cruising around with some light pulls. It runs just fine and leaves enough room for when it actually gets on boost and needs 40-50% duty cycle.

Additionally, the SC pump will not be up to the task. I picked up an 044 pump from JEGS for a good price, but there's plenty of other excellent pumps out there.

The stock 3.2 rails are probably the easiest since they bolt right to the 3.2 intake. That's what I used since I was using my 3.2 engine. Fuel lines aren't too bad. Just make sure you don't go too cheap on fittings, because I had a few that I didn't want to wait for shipping and got cheaper fittings and nothing I could do would get them to seal.

[Geronimo]

Oh yea, I forgot to list that I have a 3.2 intake, throttle body and rails. But would expect the need for larger injectors and pump good catch.

[Rawknees'Turbo]

Big G, it is awesome to see that relentlessly applying turbo poooowwwaaaaahhhhhed pressure has paid off! I'd just about given up, especially following along with your thoughts in the "Japanese car" thread in Marketplace, but it looks like yer ballz have finally dropped and that you've realized that your lust for oooohhhhhhh shiiiiiiiit acceleration will not be satisfied with a boy'z n/a power plant; man-style motoring appears to be in your future! Nice!

[Geronimo]

lol, yea... I was exceptionally close to picking up that nice lil Subaru. If the seller hadn't drug his feet we might not be here now.

In the end I figure focus on one car, get it to where I really have always wanted it to be and make Rawks proud

[Rawknees'Turbo]

I see "930 WUR" on your ballz list - no need for that in your case since you won't be running dinosaur tech K-Jetronic/CIS injection. That is the control pressure regulator for the CIS fuel head.

[Geronimo]

AHHH thanks I was wondering about that. Another good catch.

[1979-930]

If going RarlyL8 & GT35R turbo you might as well go twin scroll and get dual waste gates.
The smooth linear pull of the boost is choice, I highly recommend if you have the means.

And Raw. The 930 will whop the GT3RS off a line to about 100MPH according to by butt dyno. By 3rd that 8k Redline in the GT starts to pay off.

[Geronimo]

I am not 100% sold on the gt35r, I will dive much deeper into turbo sizing for my goals when I get closer...

When I rebuild the engine I will be looking at head upgrades and finding the right cam which will play into the turbo selection. I would like to land over the 400 WHP mark when all is said and done. So I will have to plan for that final goal as I go.

Appreciate the suggestion Mr. Abe Froman

[jons911]

For the cam, I would ask Chris at TK if he thinks your setup would do well with their cam. He described it to me as a modern take of an SC profile. Good low/mid range for a low boost threshold, but can carry up top better than the original SC. I believe they made around 600 whp at somewhere around 1.1 bar of boost. I'm currently using that profile and although I haven't gotten on the dyno yet, it seems pretty lively down low. I'm running small twins instead of a single 35r, so maybe not to comparable, but my boost threshold seems pretty low.

The cam is a bit pricier than some other options, especially if you are going to do an original grind and just get a fresh SC or 964 profile, but it's always nice to be aware of all of your options.

[clutch-monkey]

with the turbo tail you can get rid of the ugly tea tray and put the rubber from a normal whale tail on, gets you whale tail looks with turbo intercooler space

[JMS935]

Congrats on finally hitting maturity Geronimo! Welcome to the boosted club, where once you join you wonder WTF you were ever thinking with your normally aspirated POS.

[flightlead404]

Originally Posted by JMS935

Congrats on finally hitting maturity Geronimo! Welcome to the boosted club, where once you join you wonder WTF you were ever thinking with your normally aspirated POS.

Yeah. you'll also wonder where all your money went

[JMS935]

Originally Posted by flightlead404

Yeah. you'll also wonder where all your money went

The biggest waste of money I’ve ever spent in this hobby was on my first normally aspirated 911. I drove it home cross country after buying it, and had decided I needed to get boosted by the time I got home. That car was sold and gone very quickly, and it was replaced with a turbo soon after. And then another and another and another...etc..etc...

Sometimes there’s better value in spending more money. Get boosted, or at least go busted trying.

[Bucketlist]

Three years from now if you do everything you are planning, how much will you have into this project? Figure what you have in your car now, an engine rebuild, all of the efi and turbo parts, a wide body conversion, 930 transmission, maybe even a second top end rebuild to lower compression.
Compare that to finding a fairly well sorted 930 or 930 clone to purchase and selling your car, before you collect all of these parts. Unless you are looking forward to this project then that is the reason to proceed. If the end result is all your concerned with I would think picking up a well sorted car now would be cheaper in the long run. Any car that you purchase will have plenty of projects to keep you busy but you won't have the long wait and extensive work to complete.

[911tracker85]

I have a 78 3.3 turbo motor for sale. disassembled for rebuild. twin plug and ported heads.

interested?

[Geronimo]

Euro, trouble with that plan is that my car is worth less than half what I have into it having bought at the height of the frenzy. I also kind of like the idea of a pretty light turbo 911 when all is said and done.

I don't think I could get into a 930 any where near a reasonable budget without finding a great deal, which is not my luck lol.

Also this path lets me spread the costs out over time which makes my wife less stressed out.

Tracker, That would be a very cool route, but I am sure it is way out of my budget... feel free to PM me with price and info though, you never know right.

[911tracker85]

replied to PM.