hello. here is my dyno from a super low comp b16a1, i bought wrong pistons and decided to run them anyway
it is wiseco b18c pistons, in a comp-calculator it gave me a comp between 7,8 to 8,0

here is the setup

B16a1 81,5mm wiseco b18c pistons 7,8-8,0 comp, eagle rods, ITR cams
home made ramhorn, garrett 57trim t04e 60/63A/R
3"downpipe and exhaust, 38mm closed loop wastegate
2,5" intercooler piping, backdoor intercooler
stock head, intake manifold and block

dynoed on a rototest 354WHP 1,6 bar dropping off to 1,3 bar
i stopped at that level because its maybe can last longer

its insane

 

Nice numbers.

 

get it to maintain boost up top and you'll probably see a good bit more power. with 8:1 compression, I'd crank the boost up.

 

Super low compression ???? I would better say "super safe". There isn't much difference between 8 and 9, and the benefits are huge when using pump gas.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by chimmike &raquo;</TD></TR><TR><TD CLASS="quote">get it to maintain boost up top and you'll probably see a good bit more power. with 8:1 compression, I'd crank the boost up.</TD></TR></TABLE>

He's at over 1.6bar = 22psi. As long as his map sensor can go over 28, he can do so, but because he's at such a low compression, it takes more boost to get the same power. There's also a bit of off-boost response that is sacrificed, also. Glad you're happy with it..

 

i thought the spool up would be slower with the low comp. but it wasn't that late.

 

put some cams in that thing and it will make a big difference.

my buddys car has basicly the same setup, his made 390 on 14lbs, 480 on 18lbs all on pump gas. he has CTR cams

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by JDogg &raquo;</TD></TR><TR><TD CLASS="quote">put some cams in that thing and it will make a big difference.

my buddys car has basicly the same setup, his made 390 on 14lbs, 480 on 18lbs all on pump gas. he has CTR cams</TD></TR></TABLE>

it says he has itr cams, i doubt their would be any difference with ctr

 

Nice numbers, but the lower compression robbed you of your off boost power. Either way, it should be a fund setup

 

wow 8:0 compression... nice numbers none the less

 

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

it says he has itr cams, i doubt their would be any difference with ctr</TD></TR></TABLE>

hmm i thought i read stock head... oops

 

my mistake, i ment the head is not ported

i have itr cams
here is the boost vs hp
it didn't drop that much