• Mustang Forums
  • 1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk-
  • 1994 - 1995 Specific Tech

H/C/I smaller cc´s will i need to set it on tweecer?

  • Thread starter Thread starter m0l0
  • Start date Start date Sep 18, 2006

m0l0

Member
Nov 20, 2005
178
0
17
Sep 18, 2006
#1
  • Sep 18, 2006
  • #1
Hi there all :SNSign: members!

Well the thing is like this:

I have completed the modding stage , however as you know the AFR 165 with the 58 cc are smaller than the stock E7´s , so the main thing is , should i change the cid value on the tweecer?? to make the load 100% real , or should i left it on the stock 301.xxx?

since i dont want to be fighting my tune b/c a bad load calculation.

Thanks in advance!
 

Black95GTS

Active Member
Jan 8, 2004
1,644
3
38
Marlborough, MA
Sep 18, 2006
#2
  • Sep 18, 2006
  • #2
m0l0 said:
Hi there all :SNSign: members!

Well the thing is like this:

I have completed the modding stage , however as you know the AFR 165 with the 58 cc are smaller than the stock E7´s , so the main thing is , should i change the cid value on the tweecer?? to make the load 100% real , or should i left it on the stock 301.xxx?

since i dont want to be fighting my tune b/c a bad load calculation.

Thanks in advance!
Click to expand...

Engine displacement = cylinder bore x cylinder stroke x number of pistons.

302 = 4 x 3 x 8 = 301.593
351 = 4 x 3.5 x 8 = 351.858

Leave the value the same.

Adam
 

m0l0

Member
Nov 20, 2005
178
0
17
Sep 18, 2006
#3
  • Sep 18, 2006
  • #3
Black95GTS said:
Engine displacement = cylinder bore x cylinder stroke x number of pistons.

302 = 4 x 3 x 8 = 301.593
351 = 4 x 3.5 x 8 = 351.858

Leave the value the same.

Adam
Click to expand...


Doh!! , i thought displacement was also measured adding the combustion chamber!

----

:OT: , just to know , how much the compression will be increased with this smaller cc heads?? from 8.5:1 ? to something like 9:1 , i am thinking to add a blower on christmas arround 8 psi kb
 

final5-0

Mustang Master
Apr 6, 2003
6,817
12
79
DFW Texas
Sep 18, 2006
#4
  • Sep 18, 2006
  • #4
m0l0 said:


Doh!! , i thought displacement was also measured adding the combustion chamber!
Click to expand...

Only 14 posts and you have already got yourself into a situation where you end up looking .......... kinda redfaced

Now that you've hosed up in front of everybody ..................

You really are in good standing with the rest of us in the 94-95 :SNSign: forum

We are a good bunch ...... friendly bunch ..... and fairly knowledgable bunch of peeps
AND like you ..... we ain't perfect

btw ... I don't even have a clue about the specific value on how the cc's change your squeeze

however

My gut feeling is the AFR's smaller chamber is not gonna give you a half of a point

Welcome to ya

Grady
 

blksn955.o

Founding Member
Mar 15, 2002
3,263
0
66
st.louis mo 314
Sep 18, 2006
#5
  • Sep 18, 2006
  • #5
If you know your HG compressed thickness, HG bore (the size of the actuall cyl. hole OF the gasket), bore, deck/piston relation (out of the hole or in it), and cc dish on the piston.

check out this link http://www.csgnetwork.com/compcalc.html
 

m0l0

Member
Nov 20, 2005
178
0
17
Sep 19, 2006
#6
  • Sep 19, 2006
  • #6
final5-0 said:
Welcome to ya

Grady
Click to expand...

Thanks!!! i am kinda "low profile posting" but i do really try to use seach before post!!, some time ago reader even before 1 year reg. , but some times i am kinda desperated and here is a really friendly place to post!! :SNSign:, thanks!! to all!!, my feelings tells me that i will be bugging a little on this eec/tweecer forums! doing my first mod/tweecing 100% @ home

blksn955.o said:
If you know your HG compressed thickness, HG bore (the size of the actuall cyl. hole OF the gasket), bore, deck/piston relation (out of the hole or in it), and cc dish on the piston.

check out this link http://www.csgnetwork.com/compcalc.html
Click to expand...

very nice tool online added to bookmarks! , i do understand all of it but it gets a little more technical than i am at this point of my mechanical knowledge "Enter Piston Dome Volume In CCs Negative For Dished Pistons"<-- how the heck do you measure the valve spaces on the pistons! well however thanks for all the info an the welcome, i will be posting more i promise !!
 

final5-0

Mustang Master
Apr 6, 2003
6,817
12
79
DFW Texas
Sep 19, 2006
#7
  • Sep 19, 2006
  • #7
I do know what you mean about keeping a low profile

I lurked around on all the forums for about a year before I ever said anything.

Yes ... 94-95 :SNSign: is special
besides

I only hang with Quality Peeps

Grady
 

Black95GTS

Active Member
Jan 8, 2004
1,644
3
38
Marlborough, MA
Sep 19, 2006
#8
  • Sep 19, 2006
  • #8
m0l0 said:


Doh!! , i thought displacement was also measured adding the combustion chamber!
Click to expand...

Don't feel bad, I've made much more of an ass of myself then this.

I once tried to convince everyone that fuel injection makes more power then a carb at wide open throttle. Or that you need a bigger MAF with a wet N2O shot.

It happens. But the key is...

you won't ever make that mistake again!

Welcome to stangnet!:SNSign:

Adam
 
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