Fair enough. I've only checked one engine and it failed, so my experience hasn't been particularly good.

 

http://www.crank-scrapers.com/

The ones in my engines are custom made by my engine builder, not by the company in the link above.

 

Is 11:1 better than 9.5:1 for E85 use? I’m building forged engine (for F/I) and wonder If I should go with 11:1 Supertechs. I’m only using E85 and its quality stuff here in Finland. 106octaine 80-85% all year round

 

+1 on ^ ? I already have an 11:1 motor laying around, been wondering about the very same question, (what with e85 a mile away)

 

I wonder what CR the ST 11:1 actually will give on a undecked block since the compression height seams to be lower than stock (at least mine were). With some unshrouding maybe 10.5 or even slightly less. That's if the domes actually are 10.5cc on them.

Yeah, mine are 84mm, I know, but there might be the same design practice on the 85.5.

 

E85 is magic stuff. All of you E85 guys if you could start over again, would choose 11:1 pistons?

I did E85 test 6 months ago with my old supercharged stock 8.8:1 motor. I didn’t have FMIC only Aquamist WI
- Cut the water injection off and start pushing the car.
- After 15min hard street driving I didn’t hear or log any knock (I had det-cans)
- I add more timing until around 22 deg btdc finally engine starts pinging. And that was with 14PSI boost
[/cool story bro...]

 

That clears up my understanding on the way they work. I thought they scraped a portion of the side of the throw as well, but I see in the pic that they scrape only the furthest point from the center axis of the crank shaft.

I was dreading the installation, but now it looks much easier.

Thank you.

 

Any idea the cam timing in these?

 

Any plans to sell similar cams in the future?

 

That's depends on your goals and I'm probably not the guy to ask. Personally, I'm a response -----. I dread a turbo system with any lag whatsoever. I'd simply don't enjoy driving a car with bad control feedback and non-linearity, even if it's fast. So for me, I'll set up the car to have as little hysteresis in TPS/Torque as possible. One of the means to that end is high static compression and E85. Others running big turbos and a ton of boost might be happier with less static compression. Sav is better versed in the pros/cons of that decision.\

Bottom line is with E85, I can so I will.

No.

No lobe center info was supplied. It's up to me to mess with them on the dyno and see what works. I don't know where they are at now, only that the indexes are zeroed out.

 

I run 22* @ 20psi with no pinging and no WI.

 

Yeah, but with IC I didn't have any (coldside SC)

 

SJMARCY ALERT!!!!oneone

 

an idiot that isnt around anymore.

 

N N N HDJJSJEIE. SNUFGLE S

Valuabe contribution

 

This means that you should not care about the guy who built the motor - he is out of the picture for good. Guy has completely disappeared. Meaning, I know of at least 5 people who have been actively trying to find him for well over 2 years.