QuarterMileMaster

My question is simple, how difficult is it to make 300whp+ on a built SOHC using pump gas? Is a super huge turbo required?

I'd use:
rods/pistons
cam/valvetrain
IM/TB

If anyone has examples of somebody doing this on a smaller-mid range turbo I'd greatly appreciate the input. Thanks!!

redzcstandardhatch

my old d16a6 , stock head/cam with SRPs and Eagles , made 300.08/254 wtq.

on pump gas....

on 20 PSI, with a good powerband... it was a pieced-together turbo....the hot side was from an SVO mustang (.63 t3, "stage 1" i guess...small wheel), and the cold side was a 60-1 wheel, in a small HIFI housing...was custom built way back in the day.

could be dont on a small-medium t3 NO PROBLEM. 20-25 psi, tune it a bit rich, and use the boost to make the power, not the AFRs or crazy timing. that what we've done several times with turbo Ds.

that engine is still running (well, most of its parts are) in another car. blew a sleeve pushing pump gas too far (26 psi, more timing, etc) and i swapped the parts into another block and re-ringd/bearing'd it. no Det. marks on the pistons or anthing, just POP goes the sleeve. it had a cam in it at that point too..probably about 340/350 whp at that point.

same turbo is no on my f22a1-to-Dtrans setup...the turbo is not ported/clipped to flow more on the exhaust side.

HiProfile

SovXietday has a 325whp @18psi D16, I'm not sure what it all has, but I do recall he was at 217whp with the same 57trim t3/t04e at 7psi. Then I can recall a guy on turbod16.com or d-series.org with a 50trim t3/t04e that made 325whp at about the same psi, but he did a bunch of work to it. I believe both guys used pump gas. I know a local has a mild D16Y8 that did 357whp with 18psi on pump - comp cam, 3" dp/exhaust, 57trim, decent fmic.

You'd want pistons/rods just to be safe. A zex/comp cam stg2 is the way to go, and can be bought fairly cheap; aftermarket springs/retainers if going above 7200rpm. The turbo should be a T3/T04E, ideally with a 46-trim or larger compressor, and a stg2 or stg3 turbine with a .63ar housing. A good fmic would really help when pushing the turbo - ebay items just aren't efficient enough.

The turbo used below is sort of a mis-match regarding comp & turbine size. I think theshodan said 250whp is the most you want to push from a stg1 T3 turbine, and given the 60-1 can get you past 450whp...but obviously it can be made to work

QuarterMileMaster

Well, you guys might think I'm crazy or dreaming but I'm wanting to use a Mitsubishi Evo 9 turbo modified with a larger comp wheel, it's a 450hp capable turbo so flow would about match a 50 trim I would guess...

SovXietday

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by HiProfile &raquo;</TD></TR><TR><TD CLASS="quote">SovXietday has a 325whp @18psi D16, I'm not sure what it all has, but I do recall he was at 217whp with the same 57trim t3/t04e at 7psi. </TD></TR></TABLE>

Even spelled my name right.

I don't have anything special honestly. Vitara/Eagle block with a Zex 59300 cam. T3T04e 57trim .63AR w/ full 3" exhaust. And yeah, same setup put down 217 on 7psi back in the day on a stock Y8.

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by QuarterMileMaster &raquo;</TD></TR><TR><TD CLASS="quote">Well, you guys might think I'm crazy or dreaming but I'm wanting to use a Mitsubishi Evo 9 turbo modified with a larger comp wheel, it's a 450hp capable turbo so flow would about match a 50 trim I would guess...</TD></TR></TABLE>

FPGreen turbo? If so, yeah that should do it but I couldn't tell you when or at what psi.

spoolin turbo s

id say it possible but will prolly take 20 or more psi to get there

and also any evo making 450 with that turbo has really good flowing head

jarvis199

i just made 325whp/230wtq on 19psi on a vitara/eagle combo block...

keep the compression as low as u can if u wanna stay pump gas (imho)...

a lot of people are switching to the fjt rods when they use vitaras, honestly, i like the lower comp! id rather make power (on a street car) from boost over comp, timing, or afr's anyday!

i made that 325/230 on 19psi, 6* timing, 11.2-11.3:1 afr's, full 3" crust bent exhaust, so im sure i could push it a lot farther even with just adding some timing, on the 14psi tune we picked up 7whp per degree or more, so it loved timing, but i want it to last!

on a street car (pump gas, full exhaust), if u want to push pump gas, u need a setup that has as little reversion as possible, and also some lower comp that normal (imho)...

a vitara/eagle setup, with stock head and comp 59300 cam, good ramhorn or topmount mani (or even mini-ram), and a 57 trim and youd be there (.63 exhaust housing)

The Lobster

people are making over 400 hp daily driven on SOHC for the past year or more.

redzcstandardhatch

i doubt people are doing that on pump gas though

every sohc over 350 i've seen is race gas or E85

tony413

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by redzcstandardhatch &raquo;</TD></TR><TR><TD CLASS="quote">i doubt people are doing that on pump gas though

every sohc over 350 i've seen is race gas or E85</TD></TR></TABLE>

not true

civicsi940

check turbod16 and d-series.org they have a couple of heavy hitters over there pushing those numbers on pump gas

The Lobster

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by redzcstandardhatch &raquo;</TD></TR><TR><TD CLASS="quote">i doubt people are doing that on pump gas though

every sohc over 350 i've seen is race gas or E85</TD></TR></TABLE>

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by tony413 &raquo;</TD></TR><TR><TD CLASS="quote">

not true </TD></TR></TABLE>

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by civicsi940 &raquo;</TD></TR><TR><TD CLASS="quote">check turbod16 and d-series.org they have a couple of heavy hitters over there pushing those numbers on pump gas
</TD></TR></TABLE>


vitara builds now are very cheap and i think it was couple months ago someone pushed 450 hp on pump on vitaras.


Modified by The Lobster at 8:14 PM 9/7/2008

SovXietday

You guys have links to these 400+ pump gas builds?

The Lobster

just do a vitara search would be the easiest

dont have time to check if these are pump or not just did a quick search me busy

https://honda-tech.com/zero...99092

https://honda-tech.com/zerothread?id=2035990

https://honda-tech.com/zerothread?id=1749608

https://honda-tech.com/zerothread?id=2178237

tony413

http://turbod16.com/viewtopic....t=416
in conjunction with http://youtube.com/watch?v=aESxcIMQ8k8
&
http://youtube.com/watch?v=cWt31GHE2FM

this is where i got the info above
http://www.turbod16.com/viewto...rt=20

im sure theres more builds out there but im too lazy to search for them . just remember though in some towns 97 is sold at the pump and even C4 in some places

SovXietday

Well when most people talk about pump gas we're referring to most often 91-93 which is available to just about everyone, and I haven't heard of any setups getting anywhere near the 400 mark on 93.

I plan to tune over 400 on 104 this winter.

tony413

the links i posted are of a 93 octane set-up i know thats the normal highest in most places

SovXietday

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by The Lobster &raquo;</TD></TR><TR><TD CLASS="quote">just do a vitara search would be the easiest

dont have time to check if these are pump or not just did a quick search me busy

https://honda-tech.com/zero...99092

https://honda-tech.com/zerothread?id=2035990

https://honda-tech.com/zerothread?id=1749608

https://honda-tech.com/zerothread?id=2178237</TD></TR></TABLE>

LAWL.

Ok, first link doesn't work.

Next two links are JFKs car, which is running on 100 octane which is not pump gas.

Next link is Dr. Dseries car... who made 280whp. I love his car, but he doesn't fit the bill yet.

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by tony413 &raquo;</TD></TR><TR><TD CLASS="quote">

http://turbod16.com/viewtopic....t=416
in conjunction with http://youtube.com/watch?v=aESxcIMQ8k8
&
http://youtube.com/watch?v=cWt31GHE2FM

this is where i got the info above
http://www.turbod16.com/viewto...rt=20

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

I know riceburner, talked to him a few times. Does great work, but 416whp and 117trap is WAY off. My car is heavier than his and at 100whp less I went 114 with zero traction. Also I haven't seen any info as far as what gas they're running.

redzcstandardhatch

i wouldnt feel comfortable making those numbers with that tiny of a motor on pump! crazy.

its indeed pushing it, thats for sure.

i havent been reading much on d16's anymore, since i went with the Big Sohc..

tony413

riceburner says what octane he is using in one of those links i think the second or third that is not a video

SovXietday

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by tony413 &raquo;</TD></TR><TR><TD CLASS="quote">riceburner says what octane he is using in one of those links i think the second or third that is not a video </TD></TR></TABLE>

Ah ok I saw it, I didn't get a chance to look at the 2nd link. Reguardless however, the traps are more of a ~350ish trap, which is about where i'd expect 20psi to be.

tony413

im thinking of building my D-series right now its my daily beater and its a total DOG. i got passed by a ford F*CKUS today and my heart dropped i would like to just keep it simple and get 300whp on pump

civicsi940

ha. i only meant over 300 on pump. i said nothing about 400+ on pump...thats pretty crazy if not extremely rare. XP but 300 is doable. i plan on doing that myself this month if not next month

The Lobster

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

LAWL.

Ok, first link doesn't work.

Next two links are JFKs car, which is running on 100 octane which is not pump gas.

Next link is Dr. Dseries car... who made 280whp. I love his car, but he doesn't fit the bill yet.

I know riceburner, talked to him a few times. Does great work, but 416whp and 117trap is WAY off. My car is heavier than his and at 100whp less I went 114 with zero traction. Also I haven't seen any info as far as what gas they're running.

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

man i was in a hurry...why dont you take some time to research the websites that are provided for you.

400 has been done on pump and tony413 has posted couple links. Its not that hard anymore.

This post is abotu 300+ on pump and that is easily done now days this isnt even a debate its fact.

Dr. D-Series

My car ended up making 310/250tq @ 19 psi with a z6 head swap. With afr's in the high 10's.

The 280 on the y7 head is old news.

Getting retuned this month. Should come back with 350 on pump.