scttydb411

spent some quality time w/ charles today at mainstream performance in powdersprings, ga (suburb of atl). i installed my new intercooler and changed oil while he was getting another car ready for me to tune. when i got his car done i finally spent some quality time on the sohc non-vtec homemadeturbo.

203whp/199wtq SOHC POWA' b#tches!!!!

not too shabby from it's humble beginnings of 85-90whp bone stock. today was hot and humid...overall i'm pretty happy w/ the numbers. ordering traction bars next week.

now i gotta get off my a## and build it up for the other turbo and up to 22psi.

if i could've kept it at 12psi instead of rolling back to 10psi i could've been in the 210's to 220 range.



Modified by scttydb411 at 5:01 AM 5/26/2005


Modified by scttydb411 at 5:01 AM 5/26/2005

wantboost

iTrader: (2)

yay, an uberdata tuner in ga.

i think i might look into getting you to tune my b20/vtec when its done

SOHC_MShue

sick numbers man! Got a pic of the graph? This is with the td04 right? I'm looking to put down some similar numbers with mine on about 10psi....whenever i get off my lazy *** and take it to the dyno. How much boost are you running btw?

scttydb411

let me know...i usually tune on thurs nights and the occasional saturday. other nights can be arranged too based on my schedule.

scttydb411

it would spike to 12psi at the lowend and settle down to 10psi in the midrange and upper end. peak hp ended up at 10psi. i need to get an ebc and stop screwing w/ the mbc.

yes this is on the tiny tdo4L (13g). i've got a freshly rebuilt t3 60 trim .48 turbine .60 comp waiting to go in, but i think i'll wait until i pull the motor to drop in the rods and pistons.

SOHC_MShue

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by scttydb411 &raquo;</TD></TR><TR><TD CLASS="quote">it would spike to 12psi at the lowend and settle down to 10psi in the midrange and upper end. peak hp ended up at 10psi. i need to get an ebc and stop screwing w/ the mbc.

yes this is on the tiny tdo4L (13g). i've got a freshly rebuilt t3 60 trim .48 turbine .60 comp waiting to go in, but i think i'll wait until i pull the motor to drop in the rods and pistons.</TD></TR></TABLE>
I'm having the same problems with mine not wanting to hold boost. I have the flapper welded shut and i'm using an external 38mm tial gate. It will shoot up to 10psi with the mbc hooked up, but then fall back and settle at 8.5psi . Even after going from an 8psi to a 10psi spring it only boosted like .5psi more.

scttydb411

i think part of it is load and flow...the only problem w/ d-series. i'm going to experiement w/ a little headwork on my next setup.

SOHC_MShue

well i have a zex 59300 cam so it should be flowing pretty well. It pulls a heck of a lot harder up top than when i had the stock cam.

scttydb411

the cam should help, but there is only so much the y7 head will flow through.

SOHC_MShue

yea a good port job will work nicely

Calvinator

damn 199 wtq!!! I love it

used2baracer

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by SOHC_MShue &raquo;</TD></TR><TR><TD CLASS="quote">I'm having the same problems with mine not wanting to hold boost. I have the flapper welded shut and i'm using an external 38mm tial gate. It will shoot up to 10psi with the mbc hooked up, but then fall back and settle at 8.5psi . Even after going from an 8psi to a 10psi spring it only boosted like .5psi more. </TD></TR></TABLE>


This is because the turbo is waaaaayyy to small. I've seen this alot, and I don't know why people do this?? Anyway, a ebc such as a profec will make the boost hold a little more, but you are overpowering that turbo, and that's why it wont hold boost...

96turboek

how is 10 psi too much for that turbo? 13G's are efficent until 18psi

SOHC_MShue

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by used2baracer &raquo;</TD></TR><TR><TD CLASS="quote">This is because the turbo is waaaaayyy to small. I've seen this alot, and I don't know why people do this?? Anyway, a ebc such as a profec will make the boost hold a little more, but you are overpowering that turbo, and that's why it wont hold boost...</TD></TR></TABLE>
it held 10psi just fine with the internal wastegate. Also i've had it spike to way more than that when i ran an internal gate and had it adjusted wrong.

used2baracer

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by 95GSRB18C &raquo;</TD></TR><TR><TD CLASS="quote">how is 10 psi too much for that turbo? 13G's are efficent until 18psi</TD></TR></TABLE>

that's great... try to run 18psi with that turbo and let me know how it goes.... seriously though, THE TURBO IS TOOOO SMALL. thats a common problem, and i've had experience with this. A lot of dsm'ers i know always try to put little *** turbos on hondas because they are small motors, but they still suck. Just think, if a 13g or t25 is trash on the oem cars they come on, why would you put them on your car? If I remember right, a 13g is smaller than a t-25, and we all know how useless those are...

SOHC_MShue

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by used2baracer &raquo;</TD></TR><TR><TD CLASS="quote">that's great... try to run 18psi with that turbo and let me know how it goes.... seriously though, THE TURBO IS TOOOO SMALL. thats a common problem, and i've had experience with this. A lot of dsm'ers i know always try to put little *** turbos on hondas because they are small motors, but they still suck. Just think, if a 13g or t25 is trash on the oem cars they come on, why would you put them on your car? If I remember right, a 13g is smaller than a t-25, and we all know how useless those are...</TD></TR></TABLE>
There is no problem with putting a little *** turbo on a stock sohc motor. You see how he just made over 200whp with the same turbo as me. A stock d series isn't gonna reliably handle much more than 200whp.

used2baracer

How much boost is he running? And 200hp is far from the limit on a sohc, trust me, I know from experience - it's all in the tune. I've pushed 14psi on a t25 on a d16y7, 12psi on a dx and 12psi on a mini-me. I've also had a 16g on a d16y7, and a t3/t04b on a d16 and a d15b. DIFFERENCE IS DAY AND NIGHT between a little turbo and a big one. Ask anyone who has personally used both and they will tell you to put that 13g in the trashcan.

scttydb411, how much boost are you pushing?

Rocks

pretty good numbers!

SOHCmaster

I was running 200hp on a eclipse T-25@10psi, but yes this turbo is way to small runs out in the middle of 3rd gear, no cfm, I hated it.. It cant keep up in the higher rpm range..
Turn boost up more and it runs out faster, have to shift sooner, then rpms and boost power are way out due to the turbo being just to small. These are good street turbos for a newbie wanting boost, but after you understand the cfm/rpm etc, you will know its time to step up if you plan to push volume..

SOHC_MShue

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by used2baracer &raquo;</TD></TR><TR><TD CLASS="quote">How much boost is he running? And 200hp is far from the limit on a sohc, trust me, I know from experience - it's all in the tune. I've pushed 14psi on a t25 on a d16y7, 12psi on a dx and 12psi on a mini-me. I've also had a 16g on a d16y7, and a t3/t04b on a d16 and a d15b. DIFFERENCE IS DAY AND NIGHT between a little turbo and a big one. Ask anyone who has personally used both and they will tell you to put that 13g in the trashcan.

scttydb411, how much boost are you pushing?</TD></TR></TABLE>
I didn't say that 200whp is the limit. I said that as far as reliablity goes it is a good number to stay near. There is no reason to use an oversized turbo when you can't make use of its potential. For a daily driven 200-215whp sohc a small turbo will do just fine. I do agree though a little bit larger turbo would be ideal because i notice mine dropping off in the higher rpms too.

96turboek

i have run 18 psi spike and 15 to redline on my SRT-4 for over a year now and there is very minimal shaft play which you will get with any turbo.

scttydb411

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by used2baracer &raquo;</TD></TR><TR><TD CLASS="quote">How much boost is he running? And 200hp is far from the limit on a sohc, trust me, I know from experience - it's all in the tune. I've pushed 14psi on a t25 on a d16y7, 12psi on a dx and 12psi on a mini-me. I've also had a 16g on a d16y7, and a t3/t04b on a d16 and a d15b. DIFFERENCE IS DAY AND NIGHT between a little turbo and a big one. Ask anyone who has personally used both and they will tell you to put that 13g in the trashcan.

scttydb411, how much boost are you pushing?</TD></TR></TABLE>

i agree...it's perfect for low to mid boost, but higher boost levels aren't the best for this turbo...15psi and higher they start to push hot air and at 12psi it's pretty hot too.

i'm running 12psi, but it falls off to 10psi at 4.5-5k rpms. it holds 10psi all the way to redline.

it's all about compromise when it comes to turbos. my next turbo going on is a straight t3 60 trim .48 turbine .60 comp. i want quick spool, but i still have the .63 turbine houseing to use if i need to.

ITSME4G63

mad props to the sohc turbo.

95civ

awesome numbers on the D man. This is some great motivation to get my A$$ to finish my homemade project.

KingElli

Mad props to the ATL king of all things uber!!!!