635HP at 20# on E85 seems low, Ideas?

04OWwhipple

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brand new mmr short block, the entire right bank compression test was 30#'s lower than the left side, and mmr built the entire bottom half


That's a bad day. MMR didn't assemble my shortblock. They are just MMR pistons that the rebuilder installed.
 

Shadow Grey 03

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Just for comparison, my car made 670 wheel and went 138. Your 134 on spray is low, but what I want to know is what did it trap in the 1/8th? How much did it pick up on the back half?
 

04OWwhipple

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Just for comparison, my car made 670 wheel and went 138. Your 134 on spray is low, but what I want to know is what did it trap in the 1/8th? How much did it pick up on the back half?

I'll have to look at my slips when I get home tonight but if I remember correctly it was 103-105 in the 18th.
 

Shadow Grey 03

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I'll have to look at my slips when I get home tonight but if I remember correctly it was 103-105 in the 18th.
Off spray you should be picking up 30ish back half. I would see 30-32 picked up. Now, this is with ice in the reservoir and time to cool her down in relatively decent conditions. Are you running at altitude?
 

04OWwhipple

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Off spray you should be picking up 30ish back half. I would see 30-32 picked up. Now, this is with ice in the reservoir and time to cool her down in relatively decent conditions. Are you running at altitude?
I just running the stock IC tank. Intake temps are staying in check as it was pretty cold out the last night I ran. I'm at sea level here in Portland, Oregon.

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Shadow Grey 03

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I just running the stock IC tank. Intake temps are staying in check as it was pretty cold out the last night I ran. I'm at sea level here in Portland, Oregon.

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Ok. Get that compression test done and report back. Numbers are definitely low for what is expected out of your combo.
 

jdant

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For comparison, I have a Gen 2 2.9 with std inlet, stock manifolds, on 93 tune - 625whp. Something is off... good luck man!
 

04OWwhipple

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For comparison, I have a Gen 2 2.9 with std inlet, stock manifolds, on 93 tune - 625whp. Something is off... good luck man!
Thanks man! Yeah, my pump gas tune on less boost (3.5 pulley) used to make 616whp

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BlckBox04

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here's my slip for comparison

img_5855-jpg.1600967
 

Shadow Grey 03

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I'm actually running c16 right now. I'm going to switch over to ignite98 also
Yeah, I remember reading that you were on good race gas. Pump e85 works well man
My buddies 167 car runs on pump ethanol.
Another local guy runs 200+ in his turbo LS Nova on pump e85. Just have to have a good supply. We have plants in the city that blend it, so that helps :)
 

BlckBox04

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Yeah, I remember reading that you were on good race gas. Pump e85 works well man
My buddies 167 car runs on pump ethanol.
Another local guy runs 200+ in his turbo LS Nova on pump e85. Just have to have a good supply. We have plants in the city that blend it, so that helps :)

I would have done e85 but I don't have any pumps out here that sell it, so I have to buy it. There's an atv/off road toy dealer down the street from my house that sells c16 so it was easier for me to get that at the time.
 

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