SpeedingHatch

First off, Im having troubles with my ignition (I think). I thought it was the ignitor, but I swapped it out and still bogs randomly when cruising and turns off sometimes at red lights.

Anyway, this was on the old ignitor and 14 psi of boost, quick tune.

To me, at 5000 rpm, I should be having ALOT more power and the car reaches full boost (14psi) exactly at at 5600 rpm.

Isnt that way late for a .63 AR SC34?

Also, as you can see, the dyno wasnt reading past like 7700 rpm, so I think the final numbers would have been higher, but its just the lack of low end thats surprising.

Any insight would be of help. Do you think the bogging has any correlation with late spool?

Thanks


EDIT: Looking at the graph, at 3800 rpm I only have 3 psi, and at 5000 rpm, I have 8psi. Is this good or bad?



Modified by SpeedingHatch at 6:04 PM 10/23/2005

downeyballz

i would suggest cheacking all or your pipers & manifold for leaks. and then cheacking your compression. that seem really late

ham

what kind of management?

i just checked mine with a similar setup (Kinda)and i have the same curve. about 155 at 5k rpm and 203 at 6k. its an SC61 on a gsr.


Modified by ham at 8:13 AM 10/11/2005

Tchleung

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by ham &raquo;</TD></TR><TR><TD CLASS="quote">i just checked mine with a similar setup. its an SC61 on a gsr.</TD></TR></TABLE>

How is that remotely close to being the same....


SpeedingHatch: I had an SC34 on stock b16. I built 1psi at 3500RPM and about 11 psi at 5300rpm. Sounds about right to me.

non-VTEC

for a 1.6L thats seems about right........if you work on your tuning a bit more you could end up with some more power thats for sure..

SpeedingHatch

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by ham &raquo;</TD></TR><TR><TD CLASS="quote">what kind of management? </TD></TR></TABLE>

Zdyne ECU with Lap Top

But just for a reference, here is the untuned dyno from the previous owner.


I understand that it was running way too lean, but still, losing 50+ whp at 5000 rpm doesnt seem good just from richening it up a little.


Modified by SpeedingHatch at 6:05 PM 10/23/2005

Tchleung

Well what's the timngi at before and what's it at now? btw I'm runnign ZDYNE on mines as well

SpeedingHatch

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Tchleung &raquo;</TD></TR><TR><TD CLASS="quote">Well what's the timngi at before and what's it at now? btw I'm runnign ZDYNE on mines as well</TD></TR></TABLE>

I havent checked, or changed it, so it should be the same for both dynos.

Maybe Ill do that

SpeedingHatch

Just curious, but what should my timing be?

Soccerking3000

well you lost only around 25whp, thats still alot, but i would def look at the timing, whats the timing set at with 10psi? i would think something like 18-19 would be good, or maybe i'm worng lol

edit: it could also be because of using a different dyno, with different temp et cetera...

LostSolVTEC

i dunno, i made 290 on my b16 at 9.5psi with the SC34, i'm gettin 9.5-10psi at around 4500ish

do you have a gasket between your manifold and your wastegate? i lost like 20ish hp cuz of that gasket

Tchleung

you also have edlebroke maniifold etc etc tho

yee SERIOUS

iTrader: (1)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by LostSolVTEC &raquo;</TD></TR><TR><TD CLASS="quote">i dunno, i made 290 on my b16 at 9.5psi with the SC34, i'm gettin 9.5-10psi at around 4500ish

do you have a gasket between your manifold and your wastegate? i lost like 20ish hp cuz of that gasket</TD></TR></TABLE>

you lost hp from having a gasket?

is your hp curve and torque curve crossing at 5252 or a little bit later? looks a tad bit later...

LostSolVTEC

the gasket that comes with most wastegates is a shitty paper style gasket and they blow out after like 10 mins and cause an exhaust leak pre-turbo = power loss.

And if the edlebrock intake manifold comment was for me i'm still rockin the stock B16 intake mani


also what exhaust do you have SpeedingHatch? If you have a restriction that's going to delay spool times as well

m R g S r

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

How is that remotely close to being the same....


</TD></TR></TABLE>

cuz its a hondUh?

hybrid901

Do you build the same boost on the street? I'm not familiar with a dyno dynamics dyno but maybe it loads the motor different than a dynojet. Also are you dynoing the 4th gear?

SpeedingHatch

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by LostSolVTEC &raquo;</TD></TR><TR><TD CLASS="quote">i dunno, i made 290 on my b16 at 9.5psi with the SC34, i'm gettin 9.5-10psi at around 4500ish

do you have a gasket between your manifold and your wastegate? i lost like 20ish hp cuz of that gasket</TD></TR></TABLE>

I happened to check this today and did notice black soot around the wastegate flange, so I reconfigured things and tightened it down again.

But can anybody confirm what my timing should be at?

yee SERIOUS

iTrader: (1)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by LostSolVTEC &raquo;</TD></TR><TR><TD CLASS="quote">the gasket that comes with most wastegates is a shitty paper style gasket and they blow out after like 10 mins and cause an exhaust leak pre-turbo = power loss.
</TD></TR></TABLE>

well that's no good how can i tell if the gasket is bad? hopefully mine is ok. it's gonna be an itch to get mine off if it's bad even tial gaskets go bad?

lodo1

wow, you are making power really late. i'm rocking the sc61 and gettin full boost at 5400 rpm.

LostSolVTEC

if there's soot around the flange, and you have the gasket in there still don't retighten it, just pull the gasket and put it back on with no gasket

and yes the tial ones go bad. Pull it out and see if it ate through anywhere, you can't miss it, TRUST me

G"UNIT

I had a sc34 on my b17 2 years ago on 10psi and it was fully spooled by 5200. I also had a jdmb16 with a sc61 on it and it was fully spooled by 5800. I dont have that paper gasket between the wastegate and manifold. That paper gasket suxs ***. I havent had any boost leaks or boost spike. Just make sure you keep that melt ring in the wastegate when you bolt it back up. THey fall out sometimes. You want miss it.

SpeedingHatch

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by tdocrx &raquo;</TD></TR><TR><TD CLASS="quote">wow, you are making power really late. i'm rocking the sc61 and gettin full boost at 5400 rpm. </TD></TR></TABLE>

Well whats your full boost?

I hit 3 psi @3800
6 psi @4700
9 psi @5000
12psi@5300
14psi@ 5600

Looking back, the spool doesnt seem bad, its the lack of low end as compared to the untuned dyno.

But can anyone tell me what the timing should be, Im going to check that but I dont know what it should be. 16?

Help

Si Shane

that sounda about right. 400whp on 21lb and race gas is what my buddy ran on a 1.6 block. His spooled right like yours.

SpeedingHatch

I took a gander at one of my piping clamps and noticed this.



and the other side



So maybe thats it?

Rufus523

Ouch, you need to check all the other ones as well. I'm sure some pressure would leak out of cuts as large as those. If those are just straights you can get them pretty cheap ($6 I think), if they are adapters they are like 18$ a piece.