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Old 03-01-2008   #1
LGAFF
 
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Default 63=64 and Head question

I was dissapointed when I tried match my plenum to the TB, I have a 63MM DRM TB, and noticed that they did not port match the intake, it was 60MM. So I opened up the intake to 63MM. Dominic came over today so before he got here I matched up TB to the intake and there was still a difference. After remeasuring the intake, I measured the TB again....difference is the TB is actually 64MM.


Also Dominic and I noticed that the head surface at the IH was machined right at the lip, just slightly. Is this from the factory, I would assume so.

LGAFF
92 ZR1
#234
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Old 03-01-2008   #2
Jeffvette
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Default Re: 63=64 and Head question

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Originally Posted by LGAFF


Also Dominic and I noticed that the head surface at the IH was machined right at the lip, just slightly. Is this from the factory, I would assume so.

LGAFF
92 ZR1
#234
They are slightly machine to eliminate any excess overlap creaed from bolting down the next piece. Same thing with the top of the injector housings, they are machined some.
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Old 03-02-2008   #3
Pete
 
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Default Re: 63=64 and Head question

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Originally Posted by Jeffvette
They are slightly machine to eliminate any excess overlap creaed from bolting down the next piece. Same thing with the top of the injector housings, they are machined some.



Jeff,did you get my picture e-mails

Pete
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'91 #1635 PoloGreen 350 LT5
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Old 03-02-2008   #4
Jeffvette
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Default Re: 63=64 and Head question

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Jeff,did you get my picture e-mails

Pete
Yes I did Pete. Been shopping the items around.
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Old 03-02-2008   #5
XfireZ51
 
Join Date: May 2007
Location: Chicagoland, IL
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Default Re: 63=64 and Head question

I happened to bring my 63mm TB to Lee's place and it also measured 64mm. Hopefully, 2 more plenum runners and the TB opening finishes off my manifold/IH porting project. Next, its the cylinder head match.

Last edited by XfireZ51; 03-02-2008 at 10:50 AM.
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Old 03-02-2008   #6
LGAFF
 
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Default Re: 63=64 and Head question

Quote:
Originally Posted by Pete


Jeff,did you get my picture e-mails

Pete



Yes I did Pete. Been shopping the items around.


Jeff and Pete would you like to share with the rest of the class? With these two minds, sounds like something is brewing!

LGAFF
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Old 03-02-2008   #7
Pete
 
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Default Re: 63=64 and Head question

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Originally Posted by LGAFF
Quote:
Originally Posted by Pete


Jeff,did you get my picture e-mails

Pete


Yes I did Pete. Been shopping the items around.


Jeff and Pete would you like to share with the rest of the class? With these two minds, sounds like something is brewing!

LGAFF

We're working on the 454ci LT5 project.

Pete
__________________
'91 #1635 PoloGreen 350 LT5
11.09 @ 129.27
11.04 @ 128.86
474RWHP 400RWTQ
http://www.youtube.com/watch?v=SFNFOhGGlR4
http://www.youtube.com/watch?v=ZlRIOMwaDYY
https://sites.google.com/site/peteszr1garage
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Old 03-02-2008   #8
bradslt5
 
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Default Re: 63=64 and Head question

wow , good luck you 2 .petes great head developement and jeffs expertise on the lt-5 sure to be a winner . i can smell the rubber burning now
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