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10:1 cr on 92 oct???

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Old Jan 10, 2011, 08:02 PM
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wow it seems these motors dont handle it as well as other

i know in the Honda world you can make 600whp on 93 oct with a 2.0 K series
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Old Jan 10, 2011, 08:04 PM
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Originally Posted by saxon
wow it seems these motors dont handle it as well as other

i know in the Honda world you can make 600whp on 93 oct with a 2.0 K series
is that on a stock motor?
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Old Jan 10, 2011, 11:33 PM
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Originally Posted by saxon
wow it seems these motors dont handle it as well as other

i know in the Honda world you can make 600whp on 93 oct with a 2.0 K series
Can't compare apples to oranges! The K series flow a lot better than the 4g63 head to start with! Can are also larger if I remember correctly.

Mikey
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Old Jan 11, 2011, 08:52 AM
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Originally Posted by saxon
wow it seems these motors dont handle it as well as other

i know in the Honda world you can make 600whp on 93 oct with a 2.0 K series
What peak torque???

Hondas make that power simply because they make power at high revs. IMO, a 4G63 will make more peak torque at a given boost level on a given turbo almost every time. Torque is the issue when it comes to low octane fuel.
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Old Jan 11, 2011, 09:25 AM
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Mikey my pump tune was on 92. I just wanted something safe, as I was planning on running e85 most the time. I just had it tuned for 25psi and called it a day. Ill see if I can find the graph for it.
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Old Jan 11, 2011, 09:41 AM
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you got your car back nickie all issues resolved what did you end up laying down?
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Old Jan 11, 2011, 09:44 AM
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Originally Posted by saxon
wow it seems these motors dont handle it as well as other

i know in the Honda world you can make 600whp on 93 oct with a 2.0 K series
Originally Posted by 03whitegsr
What peak torque???

Hondas make that power simply because they make power at high revs. IMO, a 4G63 will make more peak torque at a given boost level on a given turbo almost every time. Torque is the issue when it comes to low octane fuel.
What boost level and what turbo? A K series can make 550-600whp at 15psi using a 3586. That only further proves my point that 10:1 and HIGH boost don't cooperate.

aaron
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Old Jan 11, 2011, 10:26 AM
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Originally Posted by NickieBlaine
Mikey my pump tune was on 92. I just wanted something safe, as I was planning on running e85 most the time. I just had it tuned for 25psi and called it a day. Ill see if I can find the graph for it.
Nick, holly ****. 25 on 10:1. Did Aaron do your tune? That seems like a lot of boost for 92.

Mikey
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Old Jan 11, 2011, 11:05 AM
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Originally Posted by JohnBradley
What boost level and what turbo? A K series can make 550-600whp at 15psi using a 3586. That only further proves my point that 10:1 and HIGH boost don't cooperate.

aaron
absolutely high boost + high dynamic compression is a no go

alot of people do not realize that the bigger cam you have the more compression you blead off which effectively lowers your dynamic compression

its all about efficiency and what fuel you want to use for the car

id rather build a high"er" compression engine that is very efficient for a pump gas street car and make sure i have a good tuner that way i have good off-boost response and make awesome power at lower boost levels
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Old Jan 11, 2011, 11:06 AM
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I remember hearing somewhere that stoker motors aka 2.3 and 2.4 don't like timing?? I don’t know if this is true or not because I've never tuned one.
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Old Jan 11, 2011, 11:07 AM
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Originally Posted by 03whitegsr
I've done 10:1 on 91 octane with a T67. Anything over about 18-20 psi was a problem.
If I did a 2.3, I've got some 9.5:1 MIL.SPEC pistons here I could throw in. What do you think would be the boost differences between 9.5:1 and 10:1 on 91 octane for an FP Black?
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Old Jan 11, 2011, 11:17 AM
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Originally Posted by awdboosted
I remember hearing somewhere that stoker motors aka 2.3 and 2.4 don't like timing?? I don’t know if this is true or not because I've never tuned one.
See I was always told larger bore motors could take more timing before starting to knock than a smaller bore motor... I'm sure Aaron can clarify for us.

Mikey
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Old Jan 11, 2011, 11:18 AM
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Originally Posted by awdboosted
I remember hearing somewhere that stoker motors aka 2.3 and 2.4 don't like timing?? I don’t know if this is true or not because I've never tuned one.
2.4 is about the same as a 2.0L, 2.3s seem to go back and forth between wanting more timing than normal (2-3*) and sometimes wanting less. That describes almost all of them though, some are happier different than others. The bore difference we are operating in is not enough to make a drastic difference one way or another. Jump 10mm and it seems 5* or so more is needed.

Seems to me this thread can be summed up in one more sentence-

Trust your tuner and dont second guess him unless there are obvious reasons to do so.
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Old Jan 11, 2011, 11:22 AM
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Originally Posted by saxon
alot of people do not realize that the bigger cam you have the more compression you blead off which effectively lowers your dynamic compression
That is exactly correct! A lot of people don't even know the difference between static compression and dynamic compression. The one that maters is dynamic

I don't have the calculations in front of me put I think my car is a dyn of 9.3:1.

Mikey
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Old Jan 11, 2011, 11:44 AM
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Originally Posted by JohnBradley
Its amazing the difference 92 to 93 makes though. To put it into perspective, 91 to 92 tuning can be as much as 5* of timing in spots and almost always 3* less. From what I have seen I would be completely surprised if 92 to 92 was any different. I have ran 32psi on 9:1 motors on 92 here without any meth or additives. I ran 30psi on my 10:1 2.2 but it became apparent it didnt really like it on the street (vs the dyno).

It would be interesting to know what timing you are running at 34psi on 93 and a 10:1 motor and if its AEM or stock computer. The other thing (minor detail) depending on pistons the compression of a 10:1 Wiseco or JE is actually 9.7:1 and can vary with HG thickness a little as well. I think Wiseco has actually taken to calling it just a 9.7:1 these days.



Aaron
I tuned the car. Im pretty sure he has wiseco in the car. As for the timing on the car its 8 degrees at the very top end on 32 psi. The car runs very strong and its on a .63 housing.
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