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LSV Setup B16B Pistons in my Ls bottom end with GSR head

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Old Jan 19, 2012 | 04:33 PM
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Default LSV Setup B16B Pistons in my Ls bottom end with GSR head

I have a question and im sure someone has done this before already so I just wanted some input. I wanna run B16B pistons in my ls bottom to bump up my compression for my lsv build, I will be running as gsr head unless I can pick up a b16 head for a good price. No to my question is my B16B pistons gonna hit my valves? I could use wax and put the motor together but I just wanted to see if anyone knows this or has already done this before I waste my time putting the motor together. thanks all input will be appreciated
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Old Jan 19, 2012 | 05:01 PM
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Default Re: LSV Setup B16B Pistons in my Ls bottom end with GSR head

No, they have enough of a valve relief, they are perfect for LSV's. And go with a GSR head, don't worry about finding a B16.
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Old Jan 19, 2012 | 05:15 PM
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Default Re: LSV Setup B16B Pistons in my Ls bottom end with GSR head

I have a gsr now thats laying around so I figured Id throw something together for my dd I will be right around 13.5:1 Compression
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Old Jan 19, 2012 | 05:29 PM
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Default Re: LSV Setup B16B Pistons in my Ls bottom end with GSR head

What cams will you be running?
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Old Jan 19, 2012 | 05:39 PM
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Default Re: LSV Setup B16B Pistons in my Ls bottom end with GSR head

Type R cams unless I could get a set of CTR cams
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Old Jan 19, 2012 | 05:53 PM
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Default Re: LSV Setup B16B Pistons in my Ls bottom end with GSR head

Originally Posted by Boosted97Ej8
I have a gsr now thats laying around so I figured Id throw something together for my dd I will be right around 13.5:1 Compression
Why do you think your compression will be that high with a GSR head and B16 pistons? Should be anywere near 11.6:1 or a little over.

Last edited by DirtyDA9; Jan 21, 2012 at 04:06 PM.
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Old Jan 19, 2012 | 05:56 PM
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Default Re: LSV Setup B16B Pistons in my Ls bottom end with GSR head

Originally Posted by DirtyDA9
Why do you think your compression will be that high with a GSR head and B16 pistons? Shouldn't be anywere near 11.6:1 or a little over.
because it will be. pct pistons have a huge dome and are different from regular pr3 or p30 pistons.

you dont need all that compression to make power
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Old Jan 19, 2012 | 06:08 PM
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Default Re: LSV Setup B16B Pistons in my Ls bottom end with GSR head

i have a mint set a CTR cams i never got a chance to use. PM if interested!
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Old Jan 19, 2012 | 07:22 PM
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Default Re: LSV Setup B16B Pistons in my Ls bottom end with GSR head

Originally Posted by doood
because it will be. pct pistons have a huge dome and are different from regular pr3 or p30 pistons.

you dont need all that compression to make power
Oh ok, I thought they were just PR3's.
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Old Jan 20, 2012 | 06:57 AM
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Default Re: LSV Setup B16B Pistons in my Ls bottom end with GSR head

If you must use the ctr pistons in your build, do not use the gsr head. The pistons like to smack the quench pads on the head.
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Old Jan 21, 2012 | 03:53 PM
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Default Re: LSV Setup B16B Pistons in my Ls bottom end with GSR head

Whoa... by just eyballing, but that combo sounds like it would net over 14:1 (81x89mm, pct pistons, ~42cc combustion chambers)... do you really think you're going to be able to "DD" that on pump gas?

Even a b16 head would only drop that maybe half a point.
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Old Jan 22, 2012 | 01:33 PM
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Default Re: LSV Setup B16B Pistons in my Ls bottom end with GSR head

ive been doing a lot of research on lsv lately and the pct's seem to be too much for that setup. according to the zeal calculator you will be in the 12's with p30/pr3 which is more than enough.

i might regret saying this but it seems that going much over 12:1 on pump gas is going to result in more pulled timing than extra power made especially if only using type r cams.
for 185 bucks i dont think you can go wrong with the rs machine pr3's. they even come with rings
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Old Nov 9, 2012 | 11:08 AM
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Default Re: LSV Setup B16B Pistons in my Ls bottom end with GSR head

So what will the yield be with the p30's in a lsv with a Gsr head, at 81.5mm?
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Old Nov 9, 2012 | 11:11 AM
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Default Re: LSV Setup B16B Pistons in my Ls bottom end with GSR head

Originally Posted by sh!ft
So what will the yield be with the p30's in a lsv with a Gsr head, at 81.5mm?
12.64:1 using the stock 3 layer HG
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Old Nov 9, 2012 | 11:13 AM
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Default Re: LSV Setup B16B Pistons in my Ls bottom end with GSR head

Originally Posted by Boosted97Ej8
I have a gsr now thats laying around so I figured Id throw something together for my dd I will be right around 13.5:1 Compression
Actually it will be 14.35:1 w/ the STD bore
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Old Nov 9, 2012 | 01:49 PM
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Default Re: LSV Setup B16B Pistons in my Ls bottom end with GSR head

Originally Posted by Boosted97Ej8
Type R cams unless I could get a set of CTR cams
So much win in this thread.
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Old Nov 9, 2012 | 01:56 PM
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Default Re: LSV Setup B16B Pistons in my Ls bottom end with GSR head

Originally Posted by clean rice
So much win in this thread.
haha, they are the same cams.
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Old Nov 9, 2012 | 05:52 PM
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Default Re: LSV Setup B16B Pistons in my Ls bottom end with GSR head

Originally Posted by Fliptard
haha, they are the same cams.
Only the 00-01 Intake Cam for the Type R is the closest to the CTR.
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Old Nov 9, 2012 | 07:13 PM
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Default Re: LSV Setup B16B Pistons in my Ls bottom end with GSR head

yea thats gonna be real tight and high CR.. is your block and/or head already or going to be decked/milled? that will also raise the total cr a bit as well..
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Old Nov 12, 2012 | 09:25 AM
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Default Re: LSV Setup B16B Pistons in my Ls bottom end with GSR head

00-01 and CTR cams are the same, https://honda-tech.com/forums/tech-misc-15/b-series-cam-spec-list-specs-all-%401mm-388612/
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Old Jul 7, 2013 | 04:29 PM
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Default Re: LSV Setup B16B Pistons in my Ls bottom end with GSR head

I am currently running this
Head
-b16
-stock valve train
-ITR cams
-golden eagle head studs

Block
-B18a1
-PCT pistons
-eagle rods
-ARP bearings (rod an main)


I am currently running it as my daily and runs healthy in my EF 4 door. I'm lo being the all motor. Apparently it is not over 13 cr but idk still loving it
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Old Jul 7, 2013 | 05:00 PM
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Default Re: LSV Setup B16B Pistons in my Ls bottom end with GSR head

Definitely over 13:1. Probably closer to 14:1 actually.
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