jcvelez360

i got a simple question; i got p 72 rods with stok bolts on it, what is the max reving that it can handle for long term reliability. my problen is the botom end, i got all the upgrades on the head, and im about to tune it so i need to now haw high can i go.

i also got a Knifedge / Micro polished p72 crank and itr pistons.

i had serch for a long time the thiferensses betwen p73 and p72 rods but i havent succed on find some thing clear.

jcvelez360

please; its very important for me.

DC2 Mang

gsr and itr rods are no different than eachother

I dont see any reason the stock rods and rod bolts wouldnt be safe to 9,000 rpms and possibly higher

1_bad_EF

https://honda-tech.com/zerothread?id=1202102

jcvelez360

ok and if i use arp bolts on it, it would be better ?? it realy wort it??
it would take mor rpm with those rod bolts??
and wish kind of arp bolts are the ones for mi?

DC2 Mang

have you gotten the car dyno'd yet?

if so look at your peak power, you should only be revving a few hundred rpms past that, otherwise it it useless to spin the motor higher

Chris Tune

you can rev to the moon...

jcvelez360

i havent, b wath i wanth i s ture it can handle as many rpm as i need, that the reason im asking for a numbe

drift4jesus

I wouldn't go any higher than 84-8600 if you are still even making power up there. GSR and ITR rods are very similar. itr rods have a nifty little R on the side of them instead of a p72. They share the same caps though. They also come with dimples in the end of the bolts so that bolt stretch can be checked from the factory.

9mm arp bolts are the ones you would need for these. In my experience they were good to about 9200 rpm before they stretched enough to have the domes on the pistons close the gap on the spark plugs and shut the motor down.

b17a1db2

i've taken mine to 9K rpms many times, nothing bad happens. and the bottom end is stock..

jcvelez360

ok that helps me a lot.
is better to use the arp bolts than the stock ones??

jcvelez360

if y get it to 9200 all the time a would have reliability???.
abo the diferensses betwen p72 and p73 rods, are it real mede of dierent material??

b17a1db2

the p72 and p73 rods are different. the stroke on both are the same, but the P73, which are type r rods, are a whole lot stronger. but i would say with 9200 revs constantly would decrease reliability in the long run. but going there seldomly wouldn't hurt anything IMO. but for confidence, having the p73 w/ arp bolts will hold up fine to that w/ no problem.

jcvelez360

what made the p73 more stronger than the p72????

4g hatch

p72's rotating assembly crank,rods is a little lighter. if your going with a mild all motor build either will do

b17a1db2

more metal, stonger materials? idk, it's an "R" rod, so that's how i see it. i've seen stock type r block's withstand 9500 revs constantly w/ no problems.

4g hatch

i stand corrected,the gsr's,type r's are the same. either will do great with arp rod bolts

b17a1db2

the gsr's and type r's aren't the same..

jcvelez360

what do you thig about knifedge crank

4g hatch

are u looking to get it done or is it already done,who did it. its a delicate thing and u want to make sure its right. for a mild build i wouldnt worry about it exspecially if u have a gsr crank since i think its around 4 pounds lighter than a hype r.

Hybrid96EK

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by 4g hatch &raquo;</TD></TR><TR><TD CLASS="quote">i stand corrected,the gsr's,type r's are the same. either will do great with arp rod bolts</TD></TR></TABLE>

No, the rods are NOT the same.

jcvelez360

ok.
i got other important question, its about the intake wich are the best that i can get.

aem, injen or what??????

please help me whit that one.

b17a1db2

Injen or Fujita, or the nice carbon fiber intake from passwordjdm.com....

jcvelez360

there is a comparaion betwen the thiferent intakes with gains on the dyno etc..??????

DonF

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Hybrid96EK &raquo;</TD></TR><TR><TD CLASS="quote">

No, the rods are NOT the same. </TD></TR></TABLE> Other than the bolt tensil strength, what is different? It's not weight, it's not material, it's not size, it's not shot peening, so what is it?