Assuming that the block has not been decked, what would be the piston to deck height with Ls block, gsr crank/rods, and ctr pistons?

 

I think stock is .30. It's either that or .20. Check c-speed.com's compression calculator to be sure.

 

also, why ls block with gsr internals? I've heard it the other way around, but not like that.

 

well i know what stock is, but any clue as to what it would be with a gsr internals? wouldnt it be different ?and to answer ur question, its what I have, and I dont have to much money to play with blocks and internals, so...

 

Bump for same question. I am going to be running a GSR rotating assy in my LS block....and going LS/Vtec with a GSR head....so if the LS has a taller deck height than a GSR/ITR, then I would like to have my LS block decked to that height as not to lower the compression of the 9:1 GSR pistons

 

the pistons would be the ones making the difference.
ptdh should be 00, meaning pistons sit flush with the deck.


Modified by mmuller at 10:59 AM 12/13/2004


Modified by mmuller at 3:53 PM 12/17/2004

 

hi smart guys.
PTD height DOES NOT CHANGE...
ls/gsr/b20= same ****.. -.030

only way to change PTD is by decking the block or custom rods and or pistons and or crank.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by EVOL &raquo;</TD></TR><TR><TD CLASS="quote">hi smart guys.
PTD height DOES NOT CHANGE...
ls/gsr/b20= same ****.. -.030

only way to change PTD is by decking the block or custom rods and or pistons and or crank.</TD></TR></TABLE>

mmmmm, didnt he say he was using pct pistons? smart guy?

 

Ok, so the longer stroke of the LS crank/rods/pistons is found in the piston traveling farther down into the cylinder.....but it stops its upward movement at the same point in the cylinder as a GSR crank/rods/pistons...correct?

I am wanting to use a GSR crank with Eagle rods for a GSR and Wiseco 9:1 pistons for a GSR.....reason being this is a budget build and I got the GSR rotating assy from a guy slightly used for like $300 and already have an LS block...

EDIT : oh, and this is my first Honda motor build so I am not yet a "smart guy" ...thats why I am here asking questions

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by jfoster &raquo;</TD></TR><TR><TD CLASS="quote">Ok, so the longer stroke of the LS crank/rods/pistons is found in the piston traveling farther down into the cylinder.....but it stops its upward movement at the same point in the cylinder as a GSR crank/rods/pistons...correct?

I am wanting to use a GSR crank with Eagle rods for a GSR and Wiseco 9:1 pistons for a GSR.....reason being this is a budget build and I got the GSR rotating assy from a guy slightly used for like $300 and already have an LS block...

EDIT : oh, and this is my first Honda motor build so I am not yet a "smart guy" ...thats why I am here asking questions </TD></TR></TABLE>
i aimed that comment at the others who responded.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by mmuller &raquo;</TD></TR><TR><TD CLASS="quote">

mmmmm, didnt he say he was using pct pistons? smart guy?</TD></TR></TABLE>

YEAH AND

edit: it's no wonder why your b16 went "boom"

note-I hope you're not building your ls/vtec, b/c that'll go boom too with your measurement/specs. You're just a litte bit off.. only by .030 thats nothing.
also your avatar serves you right. owned you are.




Modified by EVOL at 1:42 AM 12/17/2004

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by EVOL &raquo;</TD></TR><TR><TD CLASS="quote">YEAH AND

edit: it's no wonder why your b16 went "boom"

note-I hope you're not building your ls/vtec, b/c that'll go boom too with your measurement/specs. You're just a litte bit off.. only by .030 thats nothing.
also your avatar serves you right. owned you are.


Modified by EVOL at 1:42 AM 12/17/2004</TD></TR></TABLE>


lol, buddy your funny, hope your kiddin.
you speak too fast without thinking
soo why am i off in my measurements?
or dont you know that pct pistons have different compression height than the rest?
you only have to look in the first thread to find it... your intelligence shines..lol

oh by the way my avatar is ment for people like you.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by mmuller &raquo;</TD></TR><TR><TD CLASS="quote">


lol, buddy your funny, hope your kiddin.
you speak too fast without thinking
soo why am i off in my measurements?
or dont you know that pct pistons have different compression height than the rest?
you only have to look in the first thread to find it... your intelligence shines..lol

oh by the way my avatar is ment for people like you.</TD></TR></TABLE>

Hey smartass... stop misinforming everyone, you're so positve that you're right?

"compression height"... I'm guessing you mean the CC's of the dome, if thats what you're talking about then yes.. PCT pistons do have more CC at the dome than any stock Honda piston.

Even still.. if the block has not been decked the PTD(piston to deck) REMAINS THE SAME for all B-series except for b16 which is -.030. b16 PTD is -.020 but thats besides the point.

You have no idea wtf you're talking about so why are you talking down on others.. I wanna see what you have to say when you respond to this... your intelligence will shines when you try to talk like you know on a large web board and get ******* owned in the end, it must suck being you.

EVOL is right... about the specs and the comment about your motor.

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by EVOL &raquo;</TD></TR><TR><TD CLASS="quote">hi smart guys.
PTD height DOES NOT CHANGE...
ls/gsr/b20= same ****.. -.030

only way to change PTD is by decking the block or custom rods and or pistons and or crank.</TD></TR></TABLE><TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by EVOL &raquo;</TD></TR><TR><TD CLASS="quote">

YEAH AND

edit: it's no wonder why your b16 went "boom"

note-I hope you're not building your ls/vtec, b/c that'll go boom too with your measurement/specs. You're just a litte bit off.. only by .030 thats nothing.
also your avatar serves you right. owned you are.


Modified by EVOL at 1:42 AM 12/17/2004</TD></TR></TABLE>

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by K-Twizzle &raquo;</TD></TR><TR><TD CLASS="quote">

"compression height"... I'm guessing you mean the CC's of the dome, if thats what you're talking about then yes.. PCT pistons do have more CC at the dome than any stock Honda piston.

</TD></TR></TABLE>

lol, no by compression height i mean that the piston has a different compression height, thus changing piston to deck height.


<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by K-Twizzle &raquo;</TD></TR><TR><TD CLASS="quote">

Even still.. if the block has not been decked the PTD(piston to deck) REMAINS THE SAME for all B-series except for b16 which is -.030. b16 PTD is -.020 but thats besides the point.

</TD></TR></TABLE>

ok, im just going to show you pictures like a 3 year old, ready?




sorry for whoring your pic. katman

anyways, see?

this a pct piston in a b-series block.



thats INVTEC pic.

https://honda-tech.com/zerothread?id=579672

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by K-Twizzle &raquo;</TD></TR><TR><TD CLASS="quote">


You have no idea wtf you're talking about so why are you talking down on others.. I wanna see what you have to say when you respond to this... your intelligence will shines when you try to talk like you know on a large web board and get ******* owned in the end, it must suck being you.

</TD></TR></TABLE>

i was not talking down to anybody, i just hate when people put smart *** comments, specially when they are wrong...there is no need.
owned?

 

Hey guys take it easy there. I gotta say though mmuller is right. Piston to deck (P to D) is .30 in all stock B18A/B/C/C1/C5 (that is w/block untouched) BUT the PCT ctr piston changes the P to D because of that thicker ringland shown in mmuller's pic. I suggest those who haven't read the PCT piston thread to take a look, it will help you out alot if your planning on using that piston. mmuller has already used some good pics showing you whats going on with PCT pistons. The thicker ringlandalso affects comp and I believe the thread shows comp to be approx 12.5 in B18's depending on the head used, and Ls/vtec applications make it even higher because of the stroke. Hope this helped

 

I love how everyone stays out once proven wrong. Come one EVOL and K Twizzle I know you guys are smart. You can come and admit you learned something new today and we can all get along. :-)

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by asubennett &raquo;</TD></TR><TR><TD CLASS="quote">I love how everyone stays out once proven wrong. Come one EVOL and K Twizzle I know you guys are smart. You can come and admit you learned something new today and we can all get along. :-)</TD></TR></TABLE>

yeah, me too...people are quick to talk crap and then hide.

 

*hiding* lol

edit: what i know for sure ctr pistons in a b18 block with gsr head = big risk


Modified by EVOL at 2:50 AM 12/18/2004

 

Yeah that dome with that stroke and that shallow chamber can awefully close.


Also, EVOL I was not calling you out. I just know you to be a cool guy. I would have thought you would have come back in and thanked him for learnign something that is all. I know I learned something.

-Take that for what it's worth. Jason

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by EVOL &raquo;</TD></TR><TR><TD CLASS="quote">*hiding* lol

edit: what i know for sure ctr pistons in a b18 block with gsr head = big risk


Modified by EVOL at 2:50 AM 12/18/2004</TD></TR></TABLE>

and big fun!

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by LsVtec92Hatch &raquo;</TD></TR><TR><TD CLASS="quote">

and big fun!</TD></TR></TABLE>

yah, i've been told something like they do clear when installed..barely..but, at let's say 9k your rods "stretch" causing the pistons to have a "boxing match" with your head.

 

yep, when using a p72 head and pct's all there is between the head and piston is the head gasket.; wich equals .026

 

I dont wanna hijack this thread, but I'm wondering how would decking a block change PTD.

Let's say B18A was decked .010 how would that affect PTD?