turbotime

Ok long story short:

I got a obd0 head in an obd1 setup, replaced the dizzy and the vtec sol with obd1 equipment. Vtec engages, really loud, but there is no power gain...

Got car tuned, made 230 on 9psi, power sorta died at the end, put it to 12psi, made 263whp but 263@4800 rpms, then power just plateaud... Gave it 17psi, made 253@4800, and again, plateau across to 8600...

Gutted the catalytic converter, turbo spools 1.5k faster but still feels little to no power gain in vtec, just louder....

Im getting tuned again friday with the gutted cat and i want some input on what could be the cause so i can fix this before tuning; you can definitely hear the kick at 5800 (CTR Cams) but there is no power, just noise...

Car runs fine, no other problems, no CEL's...

HELP

turbotime

B17A1 w/0bd0 pr3 head
00 CTR Cams
Omni Springs/Retainers
Wiseco 9:1
Crower Rods
Kteller 3" exhaust
~freshly rebuild

ReDHaTcHyGuy

what turbo . kinda sounds like its to small?

fmrprojects

could be cause of small turbo or small exhaust

JDMlyfestyle

Most likely Not good enough tuning.. Should play with some cam timing.. if the turbo is too small its prolly running out of steam up top

boosted k20

do u have a dump tube on ur wastegate? if u do, is it routed under the oil pan? if the wastegate is dumping around the area of the turbine inlet then u will loose HP. the exhuast gasses will get sucked back into the intake and u wont get n e power.

also how much timing are u runing?

FalkenSiR

Well, if it stops making power beyond 15 psi, it must be pretty small.

turbotime

turbo is a t3/t04e, .63 ar .57trim, good for way more than what im seeing, 3"
downpipe, 2.5"->3" gutted cat, 3" exhuast

open dump goes straight down on the exhuast side of the turbine, and there is an intake pipe on the inlet that sucks air from the front right tire well so there is no way its recirculating

tuning is damn good i doubt its the tuning;

Cam timing is set to 0/base im not sure what total timing is? i know dizzy timing is at 16*

oh and its not like the turbo is losing steam, when vtec engages (exactly at 5800) power plateaus (sp?)- i would have a dyno chart but the printer at the shop was busted and i had no camera

grr any ideas?

turbotime

here is a "copy" of the dyno chart, whipped it up in photoshop

Vtec4me

i would say because your turbo is too small, or exhaust either one would do it

BrokeAssWhiteboy

what kind of management? sounds to me like the timing may be too agressive on the vtec tables.

siregcivic

both cam gears are tdc?? ones not a tooth off??? check that... then check timing maps

turbotime

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Vtec4me &raquo;</TD></TR><TR><TD CLASS="quote">i would say because your turbo is too small, or exhaust either one would do it</TD></TR></TABLE>

jeeze man, please READ the post before your reply- turbo is NOT too small nor is the exhaust (T3/T4 turbo, 3" all the way back with slight 2.5" reduction at cat)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by BrokeAssWhiteboy &raquo;</TD></TR><TR><TD CLASS="quote">what kind of management? sounds to me like the timing may be too agressive on the vtec tables.</TD></TR></TABLE>

s200, not sure what timing is in vtec but i think its like total of 18 or something, fairly conservative

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by siregcivic &raquo;</TD></TR><TR><TD CLASS="quote">both cam gears are tdc?? ones not a tooth off??? check that... then check timing maps</TD></TR></TABLE>

yeah both gears are at tdc, if they were off at all wouldnt that be noticeable in just regular driving?

birds_sol_94

if you had ur gears off one tooth you wouldnt notice.. i did with mine... and i didnt notice... until vtec... thats when you can notice... i took it to master honda tech and he took one look at it and told me that it was off... and i thought it was dead on... haha.. **** happens tho.. but it does sound like timings off

turbotime

hows this look:









i was told the dotted lines were the index marks ont eh GE gears... [not the solid line]

birds_sol_94

i dunno.. looks pretty on to me... maybe a lil off...

turbotime

im gonna double check it today, maybe it jumped a tooth since, but would that really make me lose all that power?

Suck my DX

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by birds_sol_94 &raquo;</TD></TR><TR><TD CLASS="quote">if you had ur gears off one tooth you wouldnt notice.. i did with mine... and i didnt notice... until vtec... thats when you can notice... i took it to master honda tech and he took one look at it and told me that it was off... and i thought it was dead on... haha.. **** happens tho.. but it does sound like timings off</TD></TR></TABLE>
you sure can notice when the cam timing is off a tooth...ur car will drive and sound like ****...im sure honda did that on purpose so if it jumps the sound would change and people would take it

the cam timing on turbotime's motor is pretty much dead on..

turbotime

i read somewhere someone with a similar problem found the cause to be an exhaust leak, could that really rob all that power? I dont think i have any leaks but at this point im just grabbin straws....

turbotime

another thing to note: i have an oil filter relocation kit, could this be causing too much volume and not enough pressure issues? The lines for the kit are fairly long, about 6' each, oil pressure @ filter is 35psi idle and 85psi WOT

siregcivic

exhaust cam looks like its 1 tooth advanced.... take the valvecover off... get it tdc... there is a spot you can put something in there to alight the camshafts... like this picture.. i know its not a vtec head but its the same concept.. ill put 100 bucks the exhaust cam is 1 tooth advanced....

siregcivic

here look at this pic... the two WHITE lines need to be lined up.. not the dotted lines..

siregcivic

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by birds_sol_94 &raquo;</TD></TR><TR><TD CLASS="quote">i dunno.. looks pretty on to me... maybe a lil off... </TD></TR></TABLE>

lol its either on or off.. it cant be a little off lol

birds_sol_94

damn... well i its hard to tell with those stupid dotted lines... im sorry cant see it that well in the pictures... it looks to be off.. oh yea.. and check ur oil pressure make sure thats good... yea vtec might be engaging but that doesnt mean its kicking in... and check the solenoid...

turbotime

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by siregcivic &raquo;</TD></TR><TR><TD CLASS="quote">here look at this pic... the two WHITE lines need to be lined up.. not the dotted lines..
</TD></TR></TABLE>

are you 100% sure its the solid lines? That would do it if your correct please let me know if your 100$ sure, actually expletive it, calling golden eagle now....