Basically, i have a customer with a 95 Acura integra. He had the motor built by Endyn a few years back. He also has recently installed a Full-Race Stg2 turbo kit.

Now, this will be a lengthy post because i want opinions and advice.

Story:
Car has a 1.8L Endyn motor with the following
-Endyn Pistons
-Eagle Rods
-Endyn Ported head
-Valvetrain (i believe endyn)
-Adjustable cam gears
-STOCK CAMS (he believes GSR or whatever larry put back in it)
-JG Edelbrock intake manifold
-68mm Throttle Body

The Full-Race turbo kit he went with was the GT3071R AC compatible kit.

Car has a 3in exhaust, no cat, 3 bar map sensor, etc.

The car seems to spool where is is "supposed" to spool, it just doesnt want to make any topend power. So far at 13-14psi it wont break 285whp. Ive dynoed cars like this with similar setups that were well over 315-320whp at that boost.

I turned the boost up to 16psi, an the gains were marginal, still wont crack 300whp.

Something just isnt right. Ignition Timing is right, cam gears are at 0,0. Vtec is working. I add timing, no power gains, i take timing away, no power gains.

It just seems to flatline above 7000 and hit a wall. But looking at his setup i cant find anything that could be a "restriction".

Unfortunetly the customer doesnt know too much about the engine from endyn, he paid a price for a built motor an picked it up. I have yet to play with his cam gears as the only thing i can think of is his cam timing might be way off if Endyn had decked the head or block ALOT.

Vtec is erratic, it is very hard to smooth out an get a good consistent transition. The graph is VERY wavy despite no signs of detonation, plugs lookg good, good gas, etc.

Any help is appreciated:

 

a few questions:

what engine Management?

What injector size?

Who's tuning?

 

Hondata S300

750cc Injectors

Local tuner, hes very good.

 

you said it makes ~285 at 13-14psi, you went to 16 and still didnt break 300whp? that turbo should be making way more power at 16psi..damn. could it be somthing as simple as a boost leak? ^ that info would be good to have too.

 

Boost leak or clutch not holding?

 

is there flexpipe in the downpipe? make sure it hasnt collapsed on the inside. ive seen it happen and it robs significant power

 

There are no boost leaks that i can find, boost gauge pegs target boost and stays there and reads the same as the Prefec boost controller.

It doesnt look anymore laggy than any other 30R setups i have seen.

The flex pipe is a good idea, ill check into that. Clutch is not slipping.

Im really seeing if anyone else has any other 30R graphs that i can compare his too just to get an idea.

 

had the same issue and ended up being a small boost leak.


Modified by kenbdSi at 10:05 PM 1/9/2008

 

Are you using a Profec-B II or Profec Type-S? You said you're reading the boost so I'm guessing a Profec-B II. If that is the case I would suggest swapping the boost controller out with some kind of MBC or even the Type-S.

 

Found the problem

The Full-Race AC kit put the turbo angled RIGHT at the radiator. there really isnt any room for a filter at all.

I put a fan in front of the turbo just outside the engine bay, and it gained 46whp putting it at around 330whp at 11psi.

Ill have pics up in a min so you can see how close it is

 

wow, I definitely want to see some pics.

 

basically it was just sucking hot air.

 

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

The Full-Race AC kit put the turbo angled RIGHT at the radiator. there really isnt any room for a filter at all.

I put a fan in front of the turbo just outside the engine bay, and it gained 46whp putting it at around 330whp at 11psi.

Ill have pics up in a min so you can see how close it is</TD></TR></TABLE>

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by VtecKiDD &raquo;</TD></TR><TR><TD CLASS="quote">basically it was just sucking hot air. </TD></TR></TABLE>

wow! what was the fix? did u have to modify the manifold?

 

Pics?

 

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

The Full-Race AC kit put the turbo angled RIGHT at the radiator. there really isnt any room for a filter at all.

I put a fan in front of the turbo just outside the engine bay, and it gained 46whp putting it at around 330whp at 11psi.

Ill have pics up in a min so you can see how close it is</TD></TR></TABLE>
what were iat's before and after the fan? I've had something like this happen before. tuning a ls with no dumptube on it that i was expecting was just sucking in exhaust gases because power sucked. I had the dyno operator hold a 3" piece of pipe on the dumptube outlet while making a pull(with a glove of course ) and the car gained 40whp right away.

 

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

The Full-Race AC kit put the turbo angled RIGHT at the radiator. there really isnt any room for a filter at all.

I put a fan in front of the turbo just outside the engine bay, and it gained 46whp putting it at around 330whp at 11psi.

Ill have pics up in a min so you can see how close it is</TD></TR></TABLE>

I have the exact same kit but with the 3076r. AC manifold puts a funny angle plus the turbo has a 4" antisurge shroud. You cant put a filter on it because they don't have one small enough to keep it from hitting the PWR radiator. I ended up making a 4" aluminum intake from some peices around the shop. The filter is still halfway behind the upper right corner of the radiator but it did allow me to run a filter. On a .7bar spring I went from 329whp w/o filter to 359whp with the intake and filter. You might want to look into fabbing something up.

 

This is FAN vs NO FAN at 18psi


FAN vs NO FAN at 11psi


Heres how the turbo is setup


Car has KOYO radiator and Slim Fan

 

so when the car was not making power like u expected, im assuming that the slim fan had been mounted on the FRONT of the rad? and when u found the problem, your fix was to put the slim fan on the back of the rad, resulting in higher horsepower #'s?????

is that correct?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by MeanGreenMachine &raquo;</TD></TR><TR><TD CLASS="quote">so when the car was not making power like u expected, im assuming that the slim fan had been mounted on the FRONT of the rad? and when u found the problem, your fix was to put the slim fan on the back of the rad, resulting in higher horsepower #'s?????

is that correct?</TD></TR></TABLE>
NO

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by VtecKiDD &raquo;</TD></TR><TR><TD CLASS="quote">
I put a fan in front of the turbo just outside the engine bay, and it gained 46whp putting it at around 330whp at 11psi.

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

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by MeanGreenMachine &raquo;</TD></TR><TR><TD CLASS="quote">so when the car was not making power like u expected, im assuming that the slim fan had been mounted on the FRONT of the rad? and when u found the problem, your fix was to put the slim fan on the back of the rad, resulting in higher horsepower #'s?????

is that correct?</TD></TR></TABLE>

Im sorry if i wasnt clear.

The slim fan on the radiator has always been there. I used a dyno fan, i held it a good 4-5ft from the turbo and just let it blow at the inlet an thats when it gained power.

THe only solution i can come to is that i will prob have to mount a pusher fan on the other side of the radiator

Im kinda at a loss since there is ZERO room for an intake of any sort

 

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

Im sorry if i wasnt clear.

The slim fan on the radiator has always been there. I used a dyno fan, i held it a good 4-5ft from the turbo and just let it blow at the inlet an thats when it gained power.

THe only solution i can come to is that i will prob have to mount a pusher fan on the other side of the radiator

Im kinda at a loss since there is ZERO room for an intake of any sort</TD></TR></TABLE>

you could just mount that same fan as a pusher and make an intake; it should fit like that. Right now the turbo looks like its pretty much on the fan..lol

 

i hadf a problem the other day with the same kit...was a mixture of the turbo sucking from the radiator and the blowdown tube not being under the car enough....re-routed the blow down and picked up 80hp

 

Seems like there is alot of these problems. I really like the kit from full-race, there werent any real issues except for

1) I had to modify the PS bracket so he could keep PS, yet on Full-Races website they dont mention anything about the kit not being able to retain PS.

2) No dumptube

other than that the kit fit great and obviously made great power.

Im going to call them tomorrow and see what they reccomend in regards to an air filter/intake setup

 

did u make a dumptube for it?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by .CUBISH. &raquo;</TD></TR><TR><TD CLASS="quote">did u make a dumptube for it?</TD></TR></TABLE>
yes and its routed away from the turbo