John Speake

SMAF option for 85/86 is available.....

killav

I have wild, mild, and meth ignition maps!! You are welcome to them. I'm paying it forward, as another well known r-lister was kind enough to share his ignition maps when I had nothing to start from last year.

And, I am going to guess well over 400 RWHP with stage II cams and a T-76 breathing on it.

Edit: And a 5 speed!!

Lizard928

John,
This is LH2.3/EZK.

Mike,
Maybe the ign map for your 7# would be good.

I'm hoping for 440-450whp.

John Speake

Ah ! Shoot ! ..... time I stopped for the day.....

killav

Sent you a PM.

Lizard928

Getting almost 10pm there John.

Mike,

Pm responded to.

IcemanG17

MORE IS ALWAYS BETTER :>)

Hmm a rear turbo 928 Estate sure sounds cool!!

Lizard928

Well, its alive!

I got it all buttoned up today after my friend helped me do some running around to be able to get the last couple of things needed to finish it up.

She fired right up, idled like normal (slightly richer), I had to top up the coolant as I had to move the heater slightly to provide coolant to cool the turbo.

I will look at doing a slightly different placement for the air filter once I can get some more reasonably priced pipe in. The local shops all want an arm and a leg for it!!!

Unfortunately (or fortunately), it is PISSING rain here. So it was a very calm test (also due to more tuning needing to be done!). Now keep in mind that I am told this turbo takes about 500miles to fully break in. They say that until then it may take a little more RPM for the boost to build etc. Well, I have 100% full boost around 3000RPM. Have you ever tried to keep a 928 below 3,000RPM????
Starting in first gear you give it 1/3 throttle and bam just before you hit 3,000RPM the engine shoots to redline, and your rear tires are most certainly not connected to the pavement.
I'm hoping tomorrow is dry so that I can get some good tuning done.....

Darien

DJF1

Beast

Fabio421

Did you decide against the twins or is this a different project? I'm curious to hear your impressions long term regarding that oil-less turbo. What size turbo is it? And as far as the open WG goes, it's fun for awhile but it gets annoying. I'm thinking about plumbing mine into the exhaust to avoid unwanted attention. Please keep us posted.

killav

Colin,

Is this turbo water cooled? I can see a rubber line coming off the bottom of the turbo at about 45 degrees???

or

I have read that some oiless turbos still use oil but it is in a resovoir. They still use some oil for lubrication, but the orifice size is very very small, and you don't have to have the drain perpindicular to the ground.

Edit: I think its the rubber line in the fourth picture down in your post #23. The second picture down in this post shows it connected to the turbo at the bottom.

Edit again: Nevermind, just re-read your first post which reads "run coolant lines to turbo". Very cool.

Lizard928

Fabio,
I just went through the records for purchasing the turbo, it was awhile go.
The turbo I have is here "http://www.compturbo.com/products/ct4billet/ct4_6767"
CT4 6767 w/ a .84A/R divided T4 housing. My ONLY complaint with Comp Turbo was that they didnt have compressor maps! However Justin assured me that at 1 bar, this turbo would move 75-80lbs/air minute. That is good for 650RWHP give or take.
This is also a different project, the TT is my dedicated track car, and I am needing to finish assembling the motor, as well as rebuild a set of heads, build the roll cage, list goes on.

Mike,
This turbo is water cooled yes, you can only see one of the coolant lines, the other is tucked out of site, both run along the TT, then come up on the passenger side of the engine. They are tagged in one just between the heater valve and head, the other into the return line for the heater.
The oil-less turbos that use oil are aerochargers, they are a VVT and claim to not use a wastegate. They are beautifully designed from an engineering perspective. But all reports show they do not stand up to higher boost. In other words 5-7PSI they will be fine, 1 bar and their life is very short. The other problem with them is that they are SMALL, I would have to run 2 of them in order to get even close to enough air flow, and at $2500/piece that was not an option.

Lizard928

I also have to say, V band flanges are a little harder to line up and connect 100%, take a little more patience. But once you line them up they are soooo much nicer!

hacker-pschorr

Looking good Colin - oh, and thanks for the 3AM text message alerting me of your progress