What's the most boost you'd run on 11:1 & E85?

[Eric@jpc]

wait till yall see what we do with this 12.5-1 engine we just did...

 

[Bud]

This makes me happy (not the rod part :/ ). I've been scared about giving 20psi a go on my built motor with a stock un-sleeved block. Hopefully the block hangs at that pressure.

Guess I should update. We smacked my car (11:1, e85) with 21psi quite a few times and it lived on the stock block/sleeves. Not something I'd feel comfortable doing all the time but it took it.

 

[Bud]

wait till yall see what we do with this 12.5-1 engine we just did...

Always pushing the envelope, good stuff! CM I assume?

 

[poof100]

wait till yall see what we do with this 12.5-1 engine we just did...

:burnout::rockon:

 

[D.T.R]

wait till yall see what we do with this 12.5-1 engine we just did...

I run about 12:1 on the honduhr... with 30-40psi of bewzt

 

[JUIC3D]

Guess I should update. We smacked my car (11:1, e85) with 21psi quite a few times and it lived on the stock block/sleeves. Not something I'd feel comfortable doing all the time but it took it.

That's good to hear Bud. I'm contemplating a built motor but not sure which route to go. Can you give cliffs notes on your motor? Stock block/sleeve I gather so far. "Just" a piston/rod motor?

 

[VENOM_TT302]

Damn and I was scard of running 15 psi on my 11:1 aluminator lol

 

[Bud]

That's good to hear Bud. I'm contemplating a built motor but not sure which route to go. Can you give cliffs notes on your motor? Stock block/sleeve I gather so far. "Just" a piston/rod motor?

Motor was diamond pistons, manley billet i-beams, billet oil pump gears, and MMR valve springs and titanium retainers. Stock block/sleeves/crank/heads/cams. Did incredibly well for a simple combo. If I was starting from square one again though, I'd do good sleeves right out the gate instead of doing it later.

Ford still sucks for not just releasing a cheap bulletproof iron block.

 

[D.T.R]

Bud how much power did you make on 21psi ?

 

[Bud]

Bud how much power did you make on 21psi ?

Not sure, have guesstimated using calculators to see how much power to push 3250lb 165.5mph in the 1/4. Most calcs put it in the 1150hp range at the crank. Trying a different converter when we go back together with it, should be tighter on the top end so hopefully get some more mph out of it. We also upgraded from the little .68ar hotside 60mm magnums to .81 6266 precisions while it was apart though, so not going to get a straight comparison of what the converter gets us for gains.

 

[Doug1227]

My question as the OP was based on needing to make a decision between the 11:1 and 9.5:1 Aluminator crate motors. Based on everyone's feedback, I went with the 11:1. I'm currently on E85 and a conservative 15#'s (750/600). I'd consider throwing another 3-4 #'s at it to end up a little closer to 850rwhp.

 

[slagburn]

I'm taking a little out of mine on the rebuild. Thicker head gaskets will get it down to 11.2:1. 18 psi or maybe a touch more.

 

[mastwolf]

Stock, 12psi. Forged, All of it!

NO way in hell am pushing 12psi lol!... thats close to 800rwhp...for me anyways.