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RE: CMS stage II heads and cams

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RE: CMS stage II heads and cams - 5/14/2008 12:05:15 AM   
tbirdscwd


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I guess that makes sense.  People shouldn't be boring an engine over to gain cubes anyways.  You should bore an engine as little as possible and only when necessary to resurface the cylinder walls not to gain displacement or hp.  Or in your case with oversized valves.

I haven't done any research as to what the sleeves can hadle pressure-wise and at what overbore size.  Either way if you can get away with .020 over than there is no point to take it farther.


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RE: CMS stage II heads and cams - 5/14/2008 12:14:06 AM   
oxfordgt


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Well the Iron blocks are not sleeved. If they were then bore away. I only bored mine .020 over because I had to fix the wall of number 3 from when I blew the motor.

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RE: CMS stage II heads and cams - 5/14/2008 6:42:44 AM   
1sloblckgt


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I'm glad all my questions got answered.

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RE: CMS stage II heads and cams - 5/14/2008 11:36:35 AM   
10inch Terror

 

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quote:

ORIGINAL: 1sloblckgt

I'm glad all my questions got answered.


Alot is gunna depend on the tuner and his touch, but i'd say with my stg 2 heads and cams you are looking at 320+ rwhp. Likely more with a good intake and a good tune. Those cams LOVE the added compression on a PI swap. You will need head gaskets and new headstuds, as the stock headbolts are TTY (Torque To Yield) and not reusable.

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RE: CMS stage II heads and cams - 5/14/2008 12:40:47 PM   
tbirdscwd


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quote:

ORIGINAL: oxfordgt

Well the Iron blocks are not sleeved. If they were then bore away. I only bored mine .020 over because I had to fix the wall of number 3 from when I blew the motor.


I guess I should have just called them cylinder walls.


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RE: CMS stage II heads and cams - 5/14/2008 2:05:11 PM   
bjh061487


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check out my post in this link. i put two links that i found on the forum so hopefully they help you.

http://www.mustangforums.com/m_5060850/tm.htm

< Message edited by bjh061487 -- 5/14/2008 2:07:38 PM >


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RE: CMS stage II heads and cams - 5/14/2008 2:08:03 PM   
1sloblckgt


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Will it still be safe to spray with the boost in compression ?

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ORIGINAL: sxynerd
Some people should have just been swallowed rather than conceived.

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Post #: 27
RE: CMS stage II heads and cams - 5/14/2008 2:10:10 PM   
bjh061487


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i don't cuz i have seen people running with stage heads and cams and other stuff but when i said i was planning on a pi swap they said a s/c or turbo or nitrous wouldn't be good with the compression... basically i look forward to that answer too

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RE: CMS stage II heads and cams - 5/14/2008 2:13:23 PM   
ZW99GT



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quote:

ORIGINAL: bjh061487

i don't cuz i have seen people running with stage heads and cams and other stuff but when i said i was planning on a pi swap they said a s/c or turbo or nitrous wouldn't be good with the compression... basically i look forward to that answer too


N20 loves compression. Boost does too, but with it creating so much extra heat, compression needs to be lower. Unless you want to run race gas 24/7.


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RE: CMS stage II heads and cams - 5/14/2008 2:17:33 PM   
10inch Terror

 

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Higher compression is great for spray....thats why race built nitrous motor are 15:1+ compression. Blower/turbo you tend to lower the static ratio.

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RE: CMS stage II heads and cams - 5/14/2008 2:19:49 PM   
1sloblckgt


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Even with a stock bottom end?

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quote:

ORIGINAL: sxynerd
Some people should have just been swallowed rather than conceived.

For Sale: PI cams, O/R H, O/R X

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Post #: 31
RE: CMS stage II heads and cams - 5/14/2008 2:22:05 PM   
1sloblckgt


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Jim, just trade cars with me and we'll call it even.

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quote:

ORIGINAL: sxynerd
Some people should have just been swallowed rather than conceived.

For Sale: PI cams, O/R H, O/R X

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Post #: 32
RE: CMS stage II heads and cams - 5/14/2008 4:04:54 PM   
oxfordgt


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From: Clarksville, TN
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Nitrous and compression are best friends. Forced induction and compression are good friends. If you can build it strong enough and run race fuel you can run 11:1 compression with 8psi of boost and make alot more hp then 8.8:1 with 8lbs of boost.

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RE: CMS stage II heads and cams - 5/14/2008 4:16:30 PM   
sxynerd


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quote:

ORIGINAL: 10inch Terror

Higher compression is great for spray....thats why race built nitrous motor are 15:1+ compression. Blower/turbo you tend to lower the static ratio.


I doubt you remember but when Doughboy and myself got our mustangs dyno tuned at your shop a few summers ago I asked you about that car and I asked you if it was 15.5:1 and you said "I wish, it's only 15:1."  I think it was partially dismantled then... 

Off topic but Do you know my tuner, Pete Campbell, he runs a black vortech 11sec 6'er.


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Post #: 34
RE: CMS stage II heads and cams - 5/15/2008 11:48:02 AM   
1sloblckgt


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I need a good tuner around here... Birmingham area.

Mike I need your vote.

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quote:

ORIGINAL: sxynerd
Some people should have just been swallowed rather than conceived.

For Sale: PI cams, O/R H, O/R X

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Post #: 35
RE: CMS stage II heads and cams - 5/15/2008 3:20:11 PM   
sxynerd


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quote:

ORIGINAL: 1sloblckgt

I need a good tuner around here... Birmingham area.

Mike I need your vote.


OK, Vote for what?


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Post #: 36
RE: CMS stage II heads and cams - 5/15/2008 4:54:56 PM   
bjh061487


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so for the extra heat you just need to get an intercooled supercharger and you would good right if you are running a higher compression?

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RE: CMS stage II heads and cams - 5/15/2008 6:04:35 PM   
ZW99GT



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quote:

ORIGINAL: bjh061487

so for the extra heat you just need to get an intercooled supercharger and you would good right if you are running a higher compression?


No. You'd need it to run on high octane, like 110 or 118, and probably meth. An intercooled BOOST motor is gonna have WAY higher IAT's than a N20 motor, and maybe even a N/A engine.


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