9.5 aluminator vs 11to1

[badbiach]

John Urist said the same thing. That they pulled the stock engine, dropped in the 9.5-1, put it back on the dyno and it made the exact same power. Maybe the upgraded spring package in the new 9.5 engines are helping? After talking with multiple people, and even Ford, I decided on the 9.5 because it came with the upgraded springs AND billet oil pump on the 9.5 :banana: Now if I could just get this thing off the crate and in my car!

 

[D.T.R]

not going to lie, this thread kind of makes me happy i went with the 9.5:1 lol

 

[90goldtsiawd]

Something's gotta be missing from this equation...

 

[goat-ee]

Just because you don't know what changed, doesn't mean that something didn't. The laws of physics change for nobody!! Amazing setup by the way!!!

 

[poof100]

John Urist said the same thing. That they pulled the stock engine, dropped in the 9.5-1, put it back on the dyno and it made the exact same power. Maybe the upgraded spring package in the new 9.5 engines are helping? After talking with multiple people, and even Ford, I decided on the 9.5 because it came with the upgraded springs AND billet oil pump on the 9.5 :banana: Now if I could just get this thing off the crate and in my car!

The upgraded springs are only the Boss springs and I don't seem them holding up to high boost, even with Twins and lower backpressure.

 

[Deespeed99]

The upgraded springs are only the Boss springs and I don't seem them holding up to high boost, even with Twins and lower backpressure.

Mine did pretty well at 19-21lbs on my aluminator. No valve float or anything up to 7k rpm. I was surprised honestly.

 

[grnenvy]

Hmm

Actually 32hp.
It's such a small difference but every little bit helps.

Wouldn't 4% be 33hp? 800/.96? I'm considering the 9.5, so you guys sort this out! Lol!

 

[Coonsnake]

With our stock engine and 85mm pulley we made 583hp/467tq @ 10.9 psi. On with the Aluminator 9.5:1 and 72mm pulley we made 577/511tq @ 10.4 psi. Definately picked up torque with the lower compression motor but made same boost with 13 mm smaller pulley, which i think is about a 4psi difference in sizing on stock engine. This is on the same dyno, same timing curve fwiw

 

[Coonsnake]

This is peak horsepower as well. At 5k rpms the 9.5:1 made 37hp/38tq more than the stock engine.

 

[CPRsm]

With our stock engine and 85mm pulley we made 583hp/467tq @ 10.9 psi. On with the Aluminator 9.5:1 and 72mm pulley we made 577/511tq @ 10.4 psi. Definately picked up torque with the lower compression motor but made same boost with 13 mm smaller pulley, which i think is about a 4psi difference in sizing on stock engine. This is on the same dyno, same timing curve fwiw

If you're octane limited lower compression can make more power. What did it make on race gas?

 

[OveRBoreD]

How does it feel (9.5 vs 11)part throttle? I mean does it feel like a turd until WOT or will you notice a difference at all?

 

[03screamingSVT]

1.41 60ft

Do you have a high resolution photo of this you could email me? I have a friend that can do some high quality prints. Wouldn't mind having one for wall art and could make you one as well if you wanted

 

[Coonsnake]

If you're octane limited lower compression can make more power. What did it make on race gas?

This was on race gas, the old shell urt advance. Dyno pulls in 3rd gear on Stanghi's dyno. Really the biggest downfall i see with the lower compression is the boost drop and with the Roush blower you can only get so much boost out of it.

 

[calgarybandit]

From hearing stories of Terry's blocks speaking with Michael @ L&M I am buying the 9.5.1 rather have the little extra safety with the lower compression.

 

[stretchb]

as soon as new converter gets here, I will go in for a complete re-tune for the motor and different turbos.

 

[bigriff85]

We just re dynoed my car last night on 7psi w/ 9.5:1. Stock exhaust in 65 degree weather did 591/543 and that's with same tune as the 11:1 article in which my car was in mmff in the heat did 555/526

 

[2012csgt]

I wonder if it works the other way around. I mean I would be pretty pissed if I went NA, bumped the CR to 12.5:1 and picked up zero horsepower.

 

[D.T.R]

We just re dynoed my car last night on 7psi w/ 9.5:1. Stock exhaust in 65 degree weather did 591/543 and that's with same tune as the 11:1 article in which my car was in mmff in the heat did 555/526

wait, so you actually gained with the 9.5:1 ??
same boost, same timing, same fuel and everything other than the motor?

 

[Deespeed99]

We just re dynoed my car last night on 7psi w/ 9.5:1. Stock exhaust in 65 degree weather did 591/543 and that's with same tune as the 11:1 article in which my car was in mmff in the heat did 555/526

So what does that prove exactly? Go put an 11:1 in and test it in the same conditions & psi...

 

[bigriff85]

Yeah we just swapped 11:1 motor w an aluminator didn't change anything it's 9.5:1 and the car did what it did. Magazine article in mmff the car did 555 last night it did 591. Cooler air helps probably but no nothing changed it's a locked procharger tune w stock exhaust 7.5 psi