i am building a b18c1 all motor with CP 11.0/1 compression pistons. i am going to buy eagle h beams but how do i know what length of rods to use?

 

Whatever Eagle builds for a GSR motor? lol

 

they have numerous lengths for just the gsr? how do i know what length i need?

 

137.9mm

That stock length. I'm sure the compression ratio of those pistons was measured using a stock length rod.

You could go to a longer rod to get a better R/S but I'd say just use stock.

 

and what if i have the head and deck milled will that effect the length of rods also?

 

How the heck will milling the head or decking the block affect the rod length? It will affect compression but not the rod length.

 

if i mill it, it may create piston slap that is why i have to compensate the rod length for the amount milled but i don't know how to calculate the length of the rod needed for the amount milled

 

GSR crank=GSR rods. Milling, boring, porting, polishing, jumping up and down and spinning, none of these things will change the required rod length.
You need stock length rods for a GSR. Period.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by little2fast4u &raquo;</TD></TR><TR><TD CLASS="quote">if i mill it, it may create piston slap that is why i have to compensate the rod length for the amount milled but i don't know how to calculate the length of the rod needed for the amount milled</TD></TR></TABLE>

THEN DON'T MILL THE HEAD!!! Just get it resurfaced. Since you obviously don't know what you're getting into, just have your builder order the rods.

 

why does eagle offer different lengths of rods if only one length is needed? so milling the head and decking the block won't effect the length of rods i need to order?

 

They offer different length rods for different strokes, but since you're gonna use a stock gsr crank, use a stock gsr rod length.

 

how in the world does milling the head or deck the block create piston slap?

piston slap is caused by too large of a piston to wall clearance.

 

I believe OP is confused with p2v contact. But that will only occur if the head is milled and the block is decked to hell.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by little2fast4u &raquo;</TD></TR><TR><TD CLASS="quote">why does eagle offer different lengths of rods if only one length is needed? so milling the head and decking the block won't effect the length of rods i need to order?</TD></TR></TABLE> Step away from the computer, and do not attempt to build a Honda motor. Pay somebody.

 

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

like DonF?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by DonF &raquo;</TD></TR><TR><TD CLASS="quote"> Step away from the computer, and do not attempt to build a Honda motor. Pay somebody. </TD></TR></TABLE>

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

THEN DON'T MILL THE HEAD!!! Just get it resurfaced. Since you obviously don't know what you're getting into, just have your builder order the rods.</TD></TR></TABLE>

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by KENetics1 &raquo;</TD></TR><TR><TD CLASS="quote">

like DonF?</TD></TR></TABLE>

 

i was mis-informed. i was told that piston slap is when the piston hits the valves. maybe i should have done more research on it. i have done some research since then and i have found that i can use my b20/ls crank in my gsr. my plans now are to have it bored, honed, and resurfaced. i am going to use eagle h-beam rods for a ls. i am going to have a block guard pressed in. and the only that is stopping me now is what compression i should run. i want to use the highest compression rods i can on pump gas. i was thiniking i could use 11.5:1 pistons. that would be a good daily driving compression ratio right? i have been working on cars for a long time but this is my first build and i'm not going mess it up. thats why i want feedback from people who have done this before(you). lmk thnx all

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by little2fast4u &raquo;</TD></TR><TR><TD CLASS="quote">i was mis-informed. i was told that piston slap is when the piston hits the valves. maybe i should have done more research on it. i have done some research since then and i have found that i can use my b20/ls crank in my gsr. my plans now are to have it bored, honed, and resurfaced. i am going to use eagle h-beam rods for a ls. i am going to have a block guard pressed in. and the only that is stopping me now is what compression i should run. i want to use the highest compression rods i can on pump gas. i was thiniking i could use 11.5:1 pistons. that would be a good daily driving compression ratio right? i have been working on cars for a long time but this is my first build and i'm not going mess it up. thats why i want feedback from people who have done this before(you). lmk thnx all</TD></TR></TABLE>

1st bold: Don't install a block guard, it's a waste of time and money.

2nd bold: Do you mean highest compression pistons? If so, 11.5:1 is a good CR depending on what you have available as pump gas, 91 octane, 93 octance, etc. It will also depend on how good your tune is. Good luck with the build. Keep researching, you'll get there

 

i am looking for the highest compression possible on 93 octane. i also want to factor street-ability. thanks for the info on the block guard should i buy sleeves instead? how much does it cost to have them installed?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by little2fast4u &raquo;</TD></TR><TR><TD CLASS="quote">i am looking for the highest compression possible on 93 octane. i also want to factor street-ability. thanks for the info on the block guard should i buy sleeves instead? how much does it cost to have them installed? </TD></TR></TABLE>


1) Why do you want "the highest compression possible on 93 octane"? What is it that you are trying to accomplish?

2) If you don't know if you should use a block guard or get sleeves, you NEED to be doing some more reading/research. If you want to know how much it costs, you need to research it or ask some people that DO it for a living.

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by little2fast4u &raquo;</TD></TR><TR><TD CLASS="quote"> i have been working on cars for a long time but this is my first build and i'm not going mess it up. thats why i want feedback from people who have done this before(you). lmk thnx all</TD></TR></TABLE>

If you don't want to mess it up, you need to realize when you are in over your head. Asking for "feedback" from others you don't know isn't going to be enough to save you either. How do you know what information is good or correct if you don't understand it yourself or know anything about the people giving it or their qualifications?

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by DonF &raquo;</TD></TR><TR><TD CLASS="quote"> Step away from the computer, and do not attempt to build a Honda motor. Pay somebody. </TD></TR></TABLE>

Best advice given so far. Sorry dude, you're just not ready yet.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by little2fast4u &raquo;</TD></TR><TR><TD CLASS="quote">i am looking for the highest compression possible on 93 octane. i also want to factor street-ability. thanks for the info on the block guard should i buy sleeves instead? how much does it cost to have them installed? </TD></TR></TABLE>

Like already said, high CR isn't the only thing that makes power, 11:1-11.5:1 is safe on pump gas with a good tune, but what cams are you gonna use? Also what tuning software and who will be doing the tuning? Keep the sleeves stock, unless you wanna fork out about $1000, then you'll need to order new pistons and rings.

 

well i'm going to mild port work and use full toda valvetrain with ferrea stainless valves. i was thinkin of using the toda a or b cams. if not then i was thinking about ctr or itr cams. all im really trying to do is make a nasty daily driven street/track car.