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z6 head on y8 block

  #1  
Old 10-15-2005, 12:30 AM
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Default z6 head on y8 block

Hey guys, I forgot to ask, the motor that I just built consists of a z6 vtec head on a y8 block, is this going to change compression compared to just a full y8 motor??? Also what kind of sensor problems will this cause (if any). I am going to be running a p28 ecu. Thanks in advance.
 
  #2  
Old 10-15-2005, 12:34 AM
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Default RE: z6 head on y8 block

Im pretty sure it wont change the CR by much. If it were me though, id throw a thicker metal headgasket on there to lower it a bit more (thats if ur goin to boost her)
 
  #3  
Old 10-15-2005, 12:38 AM
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Default RE: z6 head on y8 block

Stock Y8 is 9.6:1. Stock Y8 with a Z6 head will drop to about 9.3:1. Swap out for Z6 pistons and you're down to about 8.65:1.
 
  #4  
Old 10-18-2005, 03:56 AM
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Default RE: z6 head on y8 block

I have Wiseco forged 8:6:1's already installed, was just wondering if it would really be 8:6:1 with the different head/block combo.
 
  #5  
Old 10-18-2005, 12:47 PM
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Default RE: z6 head on y8 block

Closer to 8.5 than 8.6
 
  #6  
Old 10-18-2005, 02:21 PM
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Default RE: z6 head on y8 block

hey im doing a SIMILAR swap im putting a y8 head on a y5 block will my compression change and what would my compression be?...im new to this!
 
  #7  
Old 10-18-2005, 09:10 PM
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Default RE: z6 head on y8 block

you should boost it with that kind of compression
 
  #8  
Old 10-18-2005, 10:54 PM
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Default RE: z6 head on y8 block

He is. I'm helping him put it back together and install the kit as soon as he gets all his s**t back.
 
  #9  
Old 10-19-2005, 08:52 AM
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Default RE: z6 head on y8 block

thats what i was gunna say. its gunna be slow as **** with that compression and no boost.
 
  #10  
Old 10-19-2005, 10:16 AM
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Default RE: z6 head on y8 block

opps lol sorry about that kinda skip most of the forum but thanks for the reminder cough asses cough lol just playing
 

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