i was going to do a built b16 head but will the bottom end on a gsr block be safe to 10 stock? or is there some balancing that would be needed?

 

anyone? im gonna make power up there with the cams im getting

 

it probably will but not for long. the bottom end will have to be built to handle that kind of rpm.

 

thats what i am thinking as well. i guess ill get some smaller cams like buddy club spec 3s and rev to 9

 

hmmm your wanting to rev to 10k on a stock bottom end? do you know big cams require high compression, there for you will need to touch the bottom end to go along with your head.

but bc3+'s should be just fine

 

big cams don't necessarily require high compression

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by HondaIntegraR &raquo;</TD></TR><TR><TD CLASS="quote">big cams don't necessarily require high compression</TD></TR></TABLE>

Big cams will reduce dynamic compression... since dynamic compression is dependent also on static compression, in most cases you will need to raise the static compression levels to accomodate.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by egvtec &raquo;</TD></TR><TR><TD CLASS="quote">thats what i am thinking as well. i guess ill get some smaller cams like buddy club spec 3s and rev to 9</TD></TR></TABLE>

Te bc3's will stop making power at around 8300rpm's

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Hybrid93Eg &raquo;</TD></TR><TR><TD CLASS="quote">Big cams will reduce dynamic compression... since dynamic compression is dependent also on static compression, in most cases you will need to raise the static compression levels to accomodate.</TD></TR></TABLE>
but with the same compression won't for example the bc4 make more power than the bc3+

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by HondaIntegraR &raquo;</TD></TR><TR><TD CLASS="quote">
but with the same compression won't for example the bc4 make more power than the bc3+</TD></TR></TABLE>

no.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Don F &raquo;</TD></TR><TR><TD CLASS="quote">One of my favorits is when some one posts about running a certain cam in there engine and every one chips in and says you do not have enough compression, you need 12.55 0r 13, etc. I have a 11.5-1 "house" GSR dyno engine and a customers 11.5-1 CRV-Vtec, both use 93 octane. I have run M22's, M24 somethings, Sk Pro 1's, Sk 3's, BC4's and custom cams on both motors. Guess what, the bigger the cam the more BHP. Now it may come at a higher RPM so you need to build accordingly, and if I increase compression the number will go up, but so will the octane reqirement. The best numbers on the 1.8 and 2.0 came with customs cams that had a 278 duration @.40, .505 lift IN. and 283 duration @.040, .470 lift EX. Ignition timing was still 33 total with 93 octane. It was at 8800 and 8600 RPM and crossover @ 6200 IN closing was 57-59 degrees @ .040 .</TD></TR></TABLE>

found on another forum

 

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

found on another forum</TD></TR></TABLE>

Awesome, but that is not what you asked me. You asked me a general question... two engines with the same compression, won't BC4's make more power? The answer is, just like the question, general. No. Two engines with 10:1 compression, I would be willing to bet that NO, the BC4's won't make much more power over BC III+'s.

 

other factors determine this statement.

What header, what intake manifold etc.

I know for a FACT that PRo1s make more power than Skunk2 stage 2s on a 10:1 GSR motor locally, Pro1s are much bigger.

I agree with DONF

To the guy taht started this thread, no i would not trust a stock GSR motor to 10k. I revved mine with stock rods and ARP rod bolts to 9500rpms with over 100 dyno pulls, and 15k miles. i sodl the car and it still runs, but i rarely went to 10k. I HIGHLY doubt youll make power to 10k rpms. you better have a TRICK head and Header

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Hybrid93Eg &raquo;</TD></TR><TR><TD CLASS="quote">Awesome, but that is not what you asked me. You asked me a general question... two engines with the same compression, won't BC4's make more power? The answer is, just like the question, general. No. Two engines with 10:1 compression, I would be willing to bet that NO, the BC4's won't make much more power over BC III+'s.</TD></TR></TABLE>

sorry for being broad and unclear, i was just trying to tell the poster that he shouldn't stick w/ bc3+ if hes afraid he won't have enough compression. So many people believe the overcamming myth, btw to the orginal poster i forgot to mention back in the day that that when i had my gsr i took it to 9500 a couple of times.... it was sold to a friend, and is still running and racing... for 10k you should def upgrade rods and rod bolts

 

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

sorry for being broad and unclear, i was just trying to tell the poster that he shouldn't stick w/ bc3+ if hes afraid he won't have enough compression. So many people believe the overcamming myth, btw to the orginal poster i forgot to mention back in the day that that when i had my gsr i took it to 9500 a couple of times.... it was sold to a friend, and is still running and racing... for 10k you should def upgrade rods and rod bolts</TD></TR></TABLE>

BC spec III+'s are known for thier ability to run on "stock" compression levels. They should work just fine on "low" compression. I wouldn't go so far as to say its a "myth" but I would agree that it gets carried a little too far sometimes. It is still very possible to overcam an engine, just not quite as easy as a lot of people seem to think these days.

Stock rods would prolly be fine to 10k, I would certainly not trust the rod bolts to hold to those levels for very long though. You won't see me taking mine past 9k.

 

Would love to know what cams you are getting that make BHP to 10,000. Delete

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by DonF &raquo;</TD></TR><TR><TD CLASS="quote">Would love to know what cams you are getting that make BHP to 10,000. Delete </TD></TR></TABLE>

Me? I don't have any. Never claimed to.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by egvtec &raquo;</TD></TR><TR><TD CLASS="quote">anyone? im gonna make power up there with the cams im getting </TD></TR></TABLE>
it's this guy who claims that the cams that he is getting makes power up there...yeah, what brand are they?

 

Rocket Motorsports m999 or Buddy Club e=mc2 or prob Skunk 2 Emperor 8's

 

VtecKiDD, how is the ITR stock short block, can it handle up to 10k??
let say if i have big tube header, good Port job , skunkpro stg2 and ITB..
will the shortblock survive??

 

stock block, no. it wont, you can run it to 9000rpms IMO pretty reliably, 9500rpms occasioanlly. but 10k rpms, on stock rod bolts is not safe.