that is impressive

 

I do not have a build thread.

But I will gladly answer questions if you have them.

 

cool man

 

What duty cycle are your injectors running e85? How's the idle with the 1200cc primaries? Pain to tune?

 

I bet ya the engine is burnt out by now

 

^ You bet wrong, drove it all weekend. Actually I went back to 93 for the winter as I don't drive it as much and it stores a bit better (doesn't absorb water)

I love the ignorance though, it is entertaining.

 

The injectors have seen a max of about 95% duty, when I hit that wall I increased the fuel pressure a bit to get it down to the 80% mark. Now that I am on a t04b I am not pushing the fuel system nearly as much. I have not checked for awhile, I would guess it hits about 70% dc max now.

If you can tune petrol, you can tune e85. e85 is less consistent due to seasonal blends, so the tune may change a bit.

The hard part is tuning dual maps. I use e6x which I have setup as different fuel tables and ignition tables between petrol and e85, however the correction tables are used the same for both. You mess with the correction tables and its going to change both maps.

 

After reading all this I am just happy for you that you have not had issues with the 20 year old 3 piece apex seals. Normally when I tear these down, the corner pieces are worn down to splinters in engines that were barely running.

Very impressive.

 

I am just curious, since you strted this have you been through more than one NA engine? I saw an older post that said you're coolant seals went bad. Also you're for sale add says compression is starting to show its age. I only ask because I may be interested in turboing my s5 NA.

 

The motor is an s5, which to my knowledge are 2 piece seals. I did try a s4 motor with 3 piece seals before this current s5 motor and it chipped a seal pretty quickly.

I have had 3 motors in this car while owning it. First motor was a 4 port did about 60k miles but on an unfortunate afternoon my rad fan broke and it overheated after that it lasted a few months before the coolant seals were to bad and I took the motor out. I went to a 6 port s4, it lasted about 6 months it broke while using the 2 step, chipped seal (bought long block for 135) I then went to the current s5 na motor (bought short block for 120). It was showing its age the day I got it, had moderate results in the compression test. This hasn't changed since I have been using it. I am confident that if I started with a fresh rebuild the motor could easily survive an insane amount of mileage. I am starting with a old used motor with unknown mileage and it is working great as it is.

 

Awesome results. Are you planning on using water injection with the pump fuel? Best luck from here forward. Keep us updated.

 

No I am planning to run 93 until it warms up again, I will go back to e85 in March or April. My dual maps do change the boost so on 93 I run 14 psi with a big dip in timing. I would run less but that is what my wastegate spring is.

 

Are there any tuning guidelines that you'd recommend for tuning High-comp turbo? I'm debating going to 9.7:1 rotors next time I crack open my motor. The motor runs 93 pump-gas with water injection.

 

Well it depends on the fuel, of course a bit of timing needs to be knocked away. There are a few timing maps for 9.7 rotors floating around I think, or I can provide mine

 

I would also like to see your timing map for 9.7 rotors.

 

My clutch destructed itself. Pics:

 

Damn. Which clutch, how many miles, and how did it break?

I ask because I'm probably buying a 400+ftlb clutch for mine soon, a private sale didn't work out so well, mistaken clutch identity issue.

 

Its an ACT 6 puck, probably about 15k miles. It did the final damage on a high rpm launch but I think it started falling apart a lot earlier.

 

wow stock block? thats to sick...

 

Very nice numbers and good choice on E85. I like it alot.

 

This x2. Amazing numbers for a stock engine.

 

sorry that i didnt asked the questions earlier , but here they go

what did you do for oil pressure ?did you mod the oil regulator?
where did you get the feed of oil from? the oil predestal?
what did do to the lower intake manifold?any pics?
what you did for the oil return? tap the front cover or mod the oil pan?

 

S5 TII I disassembled last week had 3 piece seals.. owner probaly had a bad tank of fuel on a hot day, dunno one rotor had the tips detonated away, seal was only about half the length. plugs were also gone.. the remainings of the apex seals took the 2 rotor housings :/ altough suprisingly the turbine survived =)

Too bad E85 is not affordable in here

 

It wont be affordable in the states much longer. At the end of the year, the government subsidies runs out. Currently the US government subsidizes about 6 billion dollars a year to offset the cost of E85. You can actually get E85 cheaper than gasoline here, but you won't get near the mileage out of it.

 

I was in France last year, there E85 costed only 50% of gasoline.. If I would live there I would drive at least 20 psi daily lol =)