2.0L Engine Build

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May 29, 2007 | 11:58 PM

#26

Psykostevo

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Joined: 05-20-06

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From: Phoenix, AZ

Quote:

Originally Posted by SSMOKEM

Dumb question.... when you mean "make 15-16psi" with a 2.6, do you mean at redline or WOT? Because I'm seeing around 15psi with my 2.6 I may be wrong at where I'm seeing it though? I'm sure I sound like a complete tard, sorry

I too see only 15-16psi with a 2.7" so you sound similar. My car runs fine and is FAST, that's all that matters.

May 30, 2007 | 12:03 AM

#27

BlueSSupercharged

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From: Appleton, WI

i dont know if it was said or not but the stock compression on the 2.0 is 9.5 to 1 not 10 to 1.

May 30, 2007 | 01:06 AM

#28

Blown 4-banger

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From: Mesa, AZ

When did we say it was 10:1??? I'm pretty sure everyone knows it 9.5:1. Hell I even know that the combustion chambers are 52 cc

(CC'd the combustion chamber at work today)

May 30, 2007 | 01:21 AM

#29

Travi-ss-

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From: Fridley, mn

am i understanding this correctly? upping the compression and dropping the boost produces similar power to high boost and low compression? that would seem like a good idea to me since i wont overspin the blower........

May 30, 2007 | 11:37 AM

#30

Blown 4-banger

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From: Mesa, AZ

Non of us are over spinning the blower. The blowers max constant RPM is 16000, and short burst is 20000. At 7000 rpm and a 2.5" pulley the blower is spinning at 16,500 rpm.

May 30, 2007 | 11:41 AM

#31

blown06

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From: Central IL

do you happen to know the power difference say 9.5:1 runnign a 2.6 and 10:1 running a 2.8? Are they going to be similar in power wise?

May 30, 2007 | 11:50 AM

#32

Blown 4-banger

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From: Mesa, AZ

IMO you gonna be better off running more boost and less compression. Why? Because with lower compression pump gas is much more accepted by the motor. 10:1 compression with boost is kinda iffy with pump gas (at least in AZ).

May 30, 2007 | 11:54 AM

#33

blown06

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From: Central IL

is it because of the heat out in AZ?

May 30, 2007 | 11:58 AM

#34

Blown 4-banger

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From: Mesa, AZ

That plus the shittiest bottom of the barrel 91 SHITane gas in the country

May 30, 2007 | 12:02 PM

#35

blown06

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From: Central IL

well thats sucks on the gas, well i will probably do the 2.8 and hopefully next weekend get it dynoed tuned, and crossing fingers it will not blow up on the dyno like it did last time. I pretty nervous about it going on the dyno.

May 30, 2007 | 12:39 PM

#36

zinner

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From: RTP, NC

Quote:

Originally Posted by Blown 4-banger

The blower looses efficiency not with speed, but with boost. The more boost, the less efficient. If you could spin the blower with a 2.6" pulley and only make 15-16 psi the blower would be back in its efficiency range but with the CFM of a 2.6". Thats why I'm doing extensive head work on mine, my goal is less than 17 psi with a 2.6" pulley, if I could get it down to 15 psi the heat would almost not be an issue with all the cooling mods I have.

That sounds like a good plan!