can u help me and tell what pistind these are?? in doing an lsvtec for a friend i uncovered these slugs in his block, but dont know what they are and am afraid to put a gsr head on it cause they look pretty high COMP.





he told me the pistins are b16a2's but compared to a pr3... you decide!!

 

for got to note the pistons arent even at tdc... and they still stick out alot

 

17 looks and noone knows????? someone has to, help a honda-tech-er out!

 

look like CTR's to me......

no markings on the face????

 

nothing except the .5 in the middle, they are 81.5mm and the arrow that points to the front of the engine...... streetable in a lsvtec with a gsr head?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Spracer03 &raquo;</TD></TR><TR><TD CLASS="quote">nothing except the .5 in the middle, they are 81.5mm and the arrow that points to the front of the engine...... streetable in a lsvtec with a gsr head?</TD></TR></TABLE>

that will yield a 13 comp........ can it be done... yea but i wouldnt do it....
it will need a lot of timing pulled .... u could notch the pistons down which can help but the GSR head will bump it up

 

yeah if you dont get to big of cams and advance the crap out of it take your time and clay the motor okay. Better to be safe than sorry!!!

 

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

that will yield a 13 comp........ can it be done... yea but i wouldnt do it....
it will need a lot of timing pulled .... u could notch the pistons down which can help but the GSR head will bump it up</TD></TR></TABLE>

What can this dude run the timing at ? He was also gonna get it tuned on crome.

 

im thinking of pulling all timing out of the dizzy and putting a FPR and bumping the fuel pressure up and sending him straight to agoura to fill up with some 100 octane and then straight to hook ups since he doesnt have hondata &lt;CROME-PRO&gt; lol chris might see this car tomorrow

 

yea, and tell him not to get on it at all if thats the case... dizzy timing at 14, FPR at 50........
100 oct.... and easy driving and he should be ok

with some good size cams it can help lower the comp also

 

Just set it at zero unless you are running like some stage 3 cams or somewhere in the profile then you might have to advance the timeing some for Idle but I wouldn't worry about it if you are going to run stock cams or like stage 1's just leave the marks at zero.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by FR-MOB: SnoFlake &raquo;</TD></TR><TR><TD CLASS="quote">yea, and tell him not to get on it at all if thats the case... dizzy timing at 14, FPR at 50........
100 oct.... and easy driving and he should be ok

with some good size cams it can help lower the comp also</TD></TR></TABLE>


Possible to tune this **** on 91 oct cause i dont think this guy is gonna drive it agoura everyday ...... this guy had no idea what pistons were in it

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by TylerH &raquo;</TD></TR><TR><TD CLASS="quote">Just set it at zero unless you are running like some stage 3 cams or somewhere in the profile then you might have to advance the timeing some for Idle but I wouldn't worry about it if you are going to run stock cams or like stage 1's just leave the marks at zero.</TD></TR></TABLE> so you're saying since he has stock gsr cams i can treat it like a regular motor? i dunno about that one i think its asking for detonation... like snoflake said id rather be safe than sorry at least on the way to tune

 

i'm thinking they are Integra Type R pistons also...but I definately wouldn't use unknown slugs in a build...they most definatelly are a super high compression piston...try e-mailing the pics to Honda Tuning mag and see if they can ID em for ya...Thats the best thing I can think of...as far as your swap goes try to get ahold of some B16 pistons for the LS block and you should be good to go and have no worries about detonation issues on 91 pump swill--i never have had to use an octane booster with mine ( GSR block with a B16 head and B16 pistons) those are some super huge slugs bro!

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by evil em1 &raquo;</TD></TR><TR><TD CLASS="quote">i'm thinking they are Integra Type R pistons also...</TD></TR></TABLE>
sorry bro... thos are not ITR pistions. i know because i have them in the block i built, and the dome is nowhere near that. they are comparable to the p30's

 

fine i guess ill have to show pics...

these are pics of MY LS block with CTR pistons i had....

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by evil em1 &raquo;</TD></TR><TR><TD CLASS="quote">i'm thinking they are Integra Type R pistons also!</TD></TR></TABLE>

Not even close. They look more like CTR's than anything really. The valve reliefs just look a little large to be CTR's, I got a set in front of me and those slugs look similar but not identical.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by 97L-esVeeTeg &raquo;</TD></TR><TR><TD CLASS="quote">

Not even close. They look more like CTR's than anything really. The valve reliefs just look a little large to be CTR's, I got a set in front of me and those slugs look similar but not identical.</TD></TR></TABLE>

true i notice that as well but they are 81.5 ...... mine were strd.

 

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

true i notice that as well but they are 81.5 ...... mine were strd.</TD></TR></TABLE>
i just got word they they nippon ctr replicas... the block was rebuilt by the machine shop next to high end in ventura... so i guess we'll use this as a test to see how these pistons hold up in an EXTREME situation... and we'll see if chris over at hook ups can tune this bitch... the gsr head is on and all assembled i just cant get the 14mm timing belt tensioner bolt loose to get the timing done... damn and i wanted to fire this beast up today too, oh well, till monday it is

 

Those are definately oversize CTR's.

Why doesnt anyone drain their coolant before pulling the head?

 

unless you pull the block drain plug ,theres allways coolant around the cylinders

 

so once again, why not drain the coolant?

Yes there will always be SOME coolant left in the cylinders, but looking at the coolant utop each piston, this guy didnt even drain his radiator.

 

US Type R pistons not CTRs.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by mar778c &raquo;</TD></TR><TR><TD CLASS="quote">US Type R pistons not CTRs.</TD></TR></TABLE>

Your completely wrong man.

Look at the dome, thats like a 7cc dome for christs sake.

 

there deffinently a pct copy