I'm not sure if this has been covered before, i searched and couldn't find anything. I was wondering if there was a way to make a b18b block rev higher, i saw the golden eagle crank girdle w/ arp main bolts and i thought maybe this would help it rev. I have a b16 head with the valvetrain to support up to 9500-10000 rpms.

all input is appreciated and sorry if it has been covered

 

well your not going to get to 10k with that crappy rod ratio. youll blow out the side of you block.

 

If properly built, you can spin the B18B block 9500-10,000 without the Golden Eagle girdle.

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by DC2jdmIntegra &raquo;</TD></TR><TR><TD CLASS="quote">well your not going to get to 10k with that crappy rod ratio. youll blow out the side of you block. </TD></TR></TABLE>

...and it won't put a hole through the side of your block. I'm not sure who told you this but there is nothing wrong with the B18B rod ratio.

 

ok have fun spinning it that fast then

 

Haha He said it was a crappy r/s ratio. The crank is 2mm stroke more then a gsr. There people runnign 95mm and up cranks reving up that high. First of you dont need the girdle. Also you say that you have the power train to rev that high but what does your setup consist of? If you dont make the power up high there no reason to rev to 9500/10k.

 

right im not saying that im going to be revving up that high im just letting you know i have the valvetrain to support that high of a rev.

the reason i ask is cuz im doing lsvtec on boost with a cable b16 tranny with lsd and a gt28rs and i dont know how it will be only revving to 7000-7500.

so what exactly do i need to do to be able to take the bottom end to 8000-8500

thanks by the way

 

the lower your r/s ratio the faster your piston is going to accelerate. and the quicker it is going to out run the flame on the power stroke. so by lowering your r/s ratio you are making you power come in earlier and dropping of sooner also. and the faster you push and pull that piston up and down the more you rod will be stressed at higher rpm. lots more factors than just worrying about wall loads

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by DC2jdmIntegra &raquo;</TD></TR><TR><TD CLASS="quote">the lower your r/s ratio the faster your piston is going to accelerate. and the quicker it is going to out run the flame on the power stroke. so by lowering your r/s ratio you are making you power come in earlier and dropping of sooner also. and the faster you push and pull that piston up and down the more you rod will be stressed at higher rpm. lots more factors than just worrying about wall loads</TD></TR></TABLE>

I understand what your trying to say but there is nothing wrong with the B18B Rod ratio. You can spin the B18B/A to death. The rod ratio of the B18B is 1.539 and the rod ratio of the B18C is 1.581...thats a .042 difference....so why would there be a problem with spinning the B18B high RPM VS spinning a B18C?


Modified by PHDZINE at 6:29 PM 2/21/2007

 

i asked my instructor at my school and he told me to get the rotating assembly balanced which i was thinking of doing anyways and this will clear up my issue with revving out but im also going to get a girdle to make things stronger.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by mymeatb18" &raquo;</TD></TR><TR><TD CLASS="quote">i asked my instructor at my school and he told me to get the rotating assembly balanced which i was thinking of doing anyways and this will clear up my issue with revving out but im also going to get a girdle to make things stronger.</TD></TR></TABLE>

Balancing is a good thing to do but it doesn't dictate how high a motor will rev. We'll anyways back to your question...you really don't need a girdle for what your doing but if you feel more comfortable with one, it wouldn't hurt to have it either.
Shift it at 9000RPm all day...you'll be fine!

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by DC2jdmIntegra &raquo;</TD></TR><TR><TD CLASS="quote">ok have fun spinning it that fast then </TD></TR></TABLE>

By the way...we do 10,600 RPM and I'm pretty sure I'm not the only one!

 

thanks a lot guys

 

10,600RPM, thats SIIICK, my damn F23 auto will only do 6000 hahah, but i think its got more torque than most honda engines b/c of the long stroke?