911SC Turbo

[tsuter]

And the rear shot of the finished install:



Did about 45 miles this AM and noted that the turbo nows spools strong at 3200 RPM. At least strong enough to pop the fuel enrichment pressure switch at 3.0psi boost
That is about a 700 Rpm improvement over the old steel muffler where the back pressure was such that the turbo didn't spool until 3900-4000.

Big big difference in that straight outlet to the right side.

Now just have to think about washing the car.
Naw .... bad idea - too cold. 3F this AM.

[pjv911]

nice work !!

Kurt Williams

[MotoSook]

Nice!

[cowtown]

Originally posted by tsuter


I am using the 911 CSV for supplemental enrichment and it is performing well.

tsuter, very nice work.

I was thinking about using the CSV a while ago for enrichment, but someone mentioned that the distribution of fuel would be very uneven between the 6 runners. Do you have any opinion on this, because I think it's a great solution if it is pretty even between cylinders.

Thanks
Colin

[tsuter]

I am using a second 911 CSV for supplemental enrichment and not the stock location CSV.

My CSV for enrichment is located in the turbo outlet pipe so it has plenty of time to mix.



I have considered using the stock CSV but you would have to wire it to defeat/bypass the thermotimeswitch as the CSV is grounded thru the thermotime switch. Fancier wiring for the pressure switch.

Then you would want to make sure that your air box has the later style internal intake runners for the CSV for better fuel distribution.

Might work - but I never tried it as it was easy to just plumb in a second CSV.

[pjv911]

Tsuter do you have any trouble with the stock clutch ? My new oe sachs clutch will hold while the tires break loose in 1st but slips pretty bad once I shift to second gear. Im only running 8 psi . I just had a custom clutch made using a full srung iron disk. It capable of holding 400hp with the stock pressurre plate spring. Im wondering if you experiance any problems yourself.

Kurt Williams

[tsuter]

I've got the PP Parts Super Kit - Sachs Power clutch kit - PEL-SK3 and it is not slipping. It better hold 300HP!! My stock clutch lasted quite a while (longer than I expected) until the rubber center just blew out.

[iamchappy]

Thad
I sprung for the bae turbo kit last week for my 3.0 sc 914, I plan on pre fabricating the plumbing with pvc then when it all looks good I will duplicate it in aluminum or ss steel. I will stay in touch and will give you a few calls, Thanks for your help and suggestions.

David

[pjv911]

Today I finally found the time to make my muffler/straightpipe. It came out really nice. I took multiple scrap pieces of 3" mandrel pipe and finished it off with a stainless 3" tip. Life would have been easier if I settled for a pass side outlet but I couldnt do it. The car really sounds incredable with the SSI`s and the custom 3" pipe. Very loud yet a beautiful tone . Next project is to swap in the new full iron clutch disk that just arrived from clutch specialties in california . I forgot to take pics of the clutch setup but will tomorrow. Heres a few shots of the muffler.

Kurt Williams

[iamchappy]

Have you guys looked into the MSD boost timing master controller to adjust advance? I could use it with my MSD electric ignition. MSD also has a fuel pump boost which delivers more voltaged to the pump to increase fuel pressure at boost for enrichment. Any thoughts.

[sammyg2]

Dunno on the MSD timing adjustment, but the fuel pump is a no go without plenty-O-modifications.
The CIS has a fuel pressure regulator after the pump that controls the pressure, the only time more voltage would be a good thing is if you are pumping so much fuel the pump can't keep up. In that case I'd install a second pump.

[iamchappy]

Sammyg
How are you managing the advance in your dizzy

[sammyg2]

Right now I'm not, I'm stuck at work

At lower boost levels it isn't a concern. When I start bumping it up I plan to just have the dizzy re-curved for less total advance.

[pjv911]

Heres a few pictures of the full iron clutch disk. Also what was done included a modification to the step relief on the flywheel to accomadate the disk thickness. Then the assembly was balanced.

Kurt Williams

[iamchappy]

Ok guys:
I will be receiving my bae turbo kit this week and have been putting together parts needed for the install, I think I will install the enrichment and switch at this time even if I dont plan on boosting it any higher than 8lbs to start with, knowing me that idea wont last long.
The kit comes complete even has the original instructions, The seller says the muffler has a small hole in it ( I will repair or replace with some thing like ?), also the oil drains into the valve cover which he is sending along with it, do you see any problems with that. boost controllers and waste gate, should I install a 35mm tial like yours or will the one that comes with the kit good enough for now, any difference in boost controllers all the same or go wit the turbo x. I purchased a msd btm boost retard ignition to replace my msd 6a. I felt the built in rev limiter and the retard control were worth the investment and easy. It will be interesting to see how it will all fit into the 914, what will be useable and what I will have to fabricate. The use of silicone hoses and elbows will make the plumbing easier, I will use pvc plumbing pipe and fittings for the mockup when all seems to fit I will replicate and fabricate in aluminum or steel or with silicone hose and couplings.
I will try to use a plumbing compression pipe plug in the pop off valve instead of epoxy, they look like they would work great.
My 901 tranny has the short gears in it which provides very quick shifting with the engine in stock form, I have nice extra 901 with the stock gearing which I may end up using instead, that way I will be able to cruise in 5th without boosting.
I am very excited in starting this project, any suggestions and support will be greatly appreciated. Please advise me what you would recommend at this time knowing that I would like to do it right not half ass and keep the engine safe. My car will be used as a street car, Reliability is paramount as it is with all of us.

[RickM]

Chappy,

Perhaps your inquiry and project are worhty of their own thread. Sounds like it's goint to be fun. Oh, and don't forget the pics.

[iamchappy]

Rick, after all is said and done I will post on the 914 forum, since the guts of what I am doing and whats involved is being covered in this discussion this is where I belong, suter has been alot of help and I will lean on all of you to get this thing done right.

David

[sammyg2]

Tsuter, when you moved your thermotime switch from the left side to the right side, what did you do with your oil temperature sender?
I really don't like the way the compressor inlet boot hits the thermotime switch and I'm thinking of moving mine too but I don't want to lose my temp. sender.
TIA

[MotoSook]

Sam, how is your temp sender affected by moving the TTS?

Drill and tap your right chain box.

[iamchappy]

Kurt
I am curious, did you install the bae kit in stock form and using it that way or have you modified it with enrichment and wastegate, Are any of you guys using the bae kit in its stock form , suter has recomended to me that the modifications are necessary.