View Poll Results: Which power adder with high comp ratio and E85?
Turbo/Procharger
9
81.82%
Nitrous
2
18.18%
Voters: 11. You may not vote on this poll
High Compression Build on Corn
Bad ***. The c/r is actually 11.5:1 but somehow it got reduced in the thread. I was looking at the D1X and maybe even the Fs but for now just researching, getting input, talking to vendors, and tuners before I make my purchase. If you don't mind me asking, What kinda power are you putting down?
Again, thanks everyone for their input.
Again, thanks everyone for their input.
The D1X is good for about 50hp more then the D1 so while its an upgrade its minimal. Really everything under an F1A doesn't outflow your basic 76mm turbo so keep that in mind. We've made more then your power goals with a 76mm on a stroker which would be well less then the cost of even a D1 kit.
Have no idea haven't dyno'd my car in years, but whatever twin S369's make?
Thread Starter
Staging Lane
iTrader: (8)
Joined: May 2007
Posts: 89
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From: Corpus Christi, TX
To kind of hinge off of this point, I would also say that if I had an engine this nice, I would also not be on a factory ECU. So whether you go with MS or Holley setup, or others, you could easily incorporate an ethanol content sensor, and with WOT closed loop operation would be certainly fine to run that good ole janky e85 fuel. 
TECH Fanatic
Joined: Oct 2015
Posts: 1,280
Likes: 28
From: Pittsboro, IN
Pump E85 base fuel is typically garbage and the ethanol % varies a ton year round. Which can make tuning very inconsistent. If I had an engine like the one you are describing I’d use a quality ethanol or race fuel for the consistency and reliability. I can see using pump E85 on JY or budget builds. But it’s a pretty crappy fuel all around if you are looking for reliability and consistency in a high compression boosted build.
Thread Starter
Staging Lane
iTrader: (8)
Joined: May 2007
Posts: 89
Likes: 1
From: Corpus Christi, TX
Gotcha, even so 11.5 with a larger cam is still plenty safe on corn. Guys run much higher compression with nitrous without issue.
The D1X is good for about 50hp more then the D1 so while its an upgrade its minimal. Really everything under an F1A doesn't outflow your basic 76mm turbo so keep that in mind. We've made more then your power goals with a 76mm on a stroker which would be well less then the cost of even a D1 kit.
Have no idea haven't dyno'd my car in years, but whatever twin S369's make?
The D1X is good for about 50hp more then the D1 so while its an upgrade its minimal. Really everything under an F1A doesn't outflow your basic 76mm turbo so keep that in mind. We've made more then your power goals with a 76mm on a stroker which would be well less then the cost of even a D1 kit.
Have no idea haven't dyno'd my car in years, but whatever twin S369's make?
Why on earth would you guys run a D1 on a nice 427? I've seen them struggle to crack 800whp on a 416. If the guy is seeking an honest 1000whp a D1 is not the path to success.
I guess we are lucky that our content % doesn't seem to vary much around here. But I assume one would use a content sensor if planning to run year round fuel despite what ECM is used. Very easy to dial back timing or boost if the content drops below what's deemed acceptable, but honestly even in the winter we see E70 and anything over 50 is fine by me.
11.1 is barely higher then a stock LS3 at 10.7:1 so I wouldn't call it high compression at all, especially running on anything higher then E50. People boost LS3's all the time without worrying about analyzing fuel every fillup. I've thrown 17PSI at an LS3 on straight pump gas without issue, its still running fine.
I guess we are lucky that our content % doesn't seem to vary much around here. But I assume one would use a content sensor if planning to run year round fuel despite what ECM is used. Very easy to dial back timing or boost if the content drops below what's deemed acceptable, but honestly even in the winter we see E70 and anything over 50 is fine by me.
11.1 is barely higher then a stock LS3 at 10.7:1 so I wouldn't call it high compression at all, especially running on anything higher then E50. People boost LS3's all the time without worrying about analyzing fuel every fillup. I've thrown 17PSI at an LS3 on straight pump gas without issue, its still running fine.
Gotcha, even so 11.5 with a larger cam is still plenty safe on corn. Guys run much higher compression with nitrous without issue.
The D1X is good for about 50hp more then the D1 so while its an upgrade its minimal. Really everything under an F1A doesn't outflow your basic 76mm turbo so keep that in mind. We've made more then your power goals with a 76mm on a stroker which would be well less then the cost of even a D1 kit.
Have no idea haven't dyno'd my car in years, but whatever twin S369's make?
The D1X is good for about 50hp more then the D1 so while its an upgrade its minimal. Really everything under an F1A doesn't outflow your basic 76mm turbo so keep that in mind. We've made more then your power goals with a 76mm on a stroker which would be well less then the cost of even a D1 kit.
Have no idea haven't dyno'd my car in years, but whatever twin S369's make?
Thread Starter
Staging Lane
iTrader: (8)
Joined: May 2007
Posts: 89
Likes: 1
From: Corpus Christi, TX
I'm currently waiting to hear back from the good people at BTR. Reached out to them yesterday and gave them a run down of this build etc. and just waiting to hear back on what they recommend turbo wise. More options can't hurt. We'll see what they suggest.
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Staging Lane
iTrader: (8)
Joined: May 2007
Posts: 89
Likes: 1
From: Corpus Christi, TX
I actually heard back from BTR and they spec'd out a custom turbo for my build. I'm looking forward to the possibilities to say the least. I was told the turbo would be as follows: an s485/1.32/96mm/T6 and would take 6-8 weeks to build. I'm not all that keen on turbo verbage but I know 96mm is BIG. Definitely excited so we'll see how everything turns out.
Staging Lane
Joined: Jun 2015
Posts: 96
Likes: 3
From: Melbourne, Australia
Just be careful with those roller rockers, yella terra stuff is junk. Mate of mine is an engineer who worked there for a bit and warned me about them when I bought a car with them already fitted. Sure enough about two weeks later I had to pull my head off and replace my lifters after the rockers failed.
Thread Starter
Staging Lane
iTrader: (8)
Joined: May 2007
Posts: 89
Likes: 1
From: Corpus Christi, TX
Just be careful with those roller rockers, yella terra stuff is junk. Mate of mine is an engineer who worked there for a bit and warned me about them when I bought a car with them already fitted. Sure enough about two weeks later I had to pull my head off and replace my lifters after the rockers failed.
Thank you for the input and encouragement!
I actually heard back from BTR and they spec'd out a custom turbo for my build. I'm looking forward to the possibilities to say the least. I was told the turbo would be as follows: an s485/1.32/96mm/T6 and would take 6-8 weeks to build. I'm not all that keen on turbo verbage but I know 96mm is BIG. Definitely excited so we'll see how everything turns out.
I actually heard back from BTR and they spec'd out a custom turbo for my build. I'm looking forward to the possibilities to say the least. I was told the turbo would be as follows: an s485/1.32/96mm/T6 and would take 6-8 weeks to build. I'm not all that keen on turbo verbage but I know 96mm is BIG. Definitely excited so we'll see how everything turns out.
TECH Enthusiast
Joined: Oct 2007
Posts: 530
Likes: 2
From: South Lyon, Michigan
I spoke with Justin of KBX at WCF last year, and asked him a "general" question regarding their engines they put together for alot of the X275 guys.
he told me that the run of the mill setup is in the 12:1 range, with some exceeding 13-14:1 on dedicated 1/8th mile setups.
he told me that the run of the mill setup is in the 12:1 range, with some exceeding 13-14:1 on dedicated 1/8th mile setups.
