Build up for Sohc Turbo Max of 300 whp
06-25-2003, 07:41 PM
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Build up for Sohc Turbo Max of 300 whp
I am going to build my sohc d16a6. I am going to go with Eagle rods and either SRPs or Endyn pistons and stock sleeves I am not sure what bore size I should run stock 75mm or what? I am pretty sure I want to go for a 9:1 compression ratio, stock compression is 9.1:1 so its not a big drop will this effect timing??? I will run a new stock headgasket and obviously have to bore and hone the block. What other things will I need to do, new water pump, what about the cam shaft will I have to regrind the cam shaft , what seals and bearings will need replacing or should be replaced?.
Looking for 200whp daily and up to 300whp at the track on race gas from time to time..
Didn't want to ***** civicrydas thread
Looking for 200whp daily and up to 300whp at the track on race gas from time to time..
Didn't want to ***** civicrydas thread
06-25-2003, 10:53 PM
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Re: Build up for Sohc Turbo Max of 300 whp (turbozxi)
Stock bore, stock headgasket. New oil pump, water pump. ARP headstuds and bolts, OEM stock bearings and gaskets.
For only 300 whp, i don't think you will need any head work.
For only 300 whp, i don't think you will need any head work.
06-26-2003, 12:14 AM
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Re: Build up for Sohc Turbo Max of 300 whp (CzanSOHC)
go with 10.1 cr..make more power, better off boost driving, spool turbo faster, still a safe cr for boost...... 
06-26-2003, 11:26 AM
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Re: Build up for Sohc Turbo Max of 300 whp (CzanSOHC)
Thanks so stock bore you say would get em to just hone the block lightly then? I was thinking of going with the Endyn pistons that are .5mm over oversized to help eliminate pistons slap. Is this a good idea?? 
06-26-2003, 06:33 PM
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at the jetties fishin'
Re: Build up for Sohc Turbo Max of 300 whp (CzanSOHC)
are you going n/a or f/i??
for n/a definitely mill the head down and go for higher compression or run z6 pistons. Also, run as high a duration cam as you can (if you have a stick that is) and port the **** outta the head and upgrade the valve train and go with bigger valves..that'll take you a good ways to your goal.
f/i is much easier. go with forged 8.0-1 pistons, a turbo that will hold 18psi efficiently and a good fuel management system with injectors to match and you'll be set at 16psi...
for n/a definitely mill the head down and go for higher compression or run z6 pistons. Also, run as high a duration cam as you can (if you have a stick that is) and port the **** outta the head and upgrade the valve train and go with bigger valves..that'll take you a good ways to your goal.
f/i is much easier. go with forged 8.0-1 pistons, a turbo that will hold 18psi efficiently and a good fuel management system with injectors to match and you'll be set at 16psi...
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06-26-2003, 06:54 PM
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at the jetties fishin'
Re: Build up for Sohc Turbo Max of 300 whp (turbozxi)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by turbozxi »</TD></TR><TR><TD CLASS="quote">Forced Induction obviously. Already am boosted with 196whp at 10psi. 
</TD></TR></TABLE>
well then, go with my option #2 as stated
I'm in the process of doing that upgrade myself...already have my turbonetics t3/t04e combo ball bearing turbo (don't ask...cost me half a kidney) and drag manifold...hondata is on the way with 3bar map sensor and 550cc injectors which I will tune with my current greddy kit until I'm ready for the t3/4...
next on the agenda I'm going to locate a short block to have block posted and get rods/8.0-1 pistons and I've got another d16y8 head propped up against the water heater that I intend to have o-ringed for use with an sce copper head gasket and will fit with the crower d-turbo camshaft and valvetrain...
all in all, if I can't hit 325-350hp with this setup then there's something damned wrong in the world....and I estimate about $4200-4500 total in the engine which runs about the same as a damn B18c5 swap setup...and makes about double the hp....as 350hp should be REALLY conservative for it...
</TD></TR></TABLE>well then, go with my option #2 as stated
I'm in the process of doing that upgrade myself...already have my turbonetics t3/t04e combo ball bearing turbo (don't ask...cost me half a kidney) and drag manifold...hondata is on the way with 3bar map sensor and 550cc injectors which I will tune with my current greddy kit until I'm ready for the t3/4...
next on the agenda I'm going to locate a short block to have block posted and get rods/8.0-1 pistons and I've got another d16y8 head propped up against the water heater that I intend to have o-ringed for use with an sce copper head gasket and will fit with the crower d-turbo camshaft and valvetrain...
all in all, if I can't hit 325-350hp with this setup then there's something damned wrong in the world....and I estimate about $4200-4500 total in the engine which runs about the same as a damn B18c5 swap setup...and makes about double the hp....as 350hp should be REALLY conservative for it...
06-26-2003, 07:26 PM
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Re: Build up for Sohc Turbo Max of 300 whp (stackz)
8.0 is way too low man....thatyd suck all around..even weaker off boost driving(if d16's arent weak enough as is), less power per lb of boost...slower spool time, etc
06-26-2003, 08:26 PM
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Re: Build up for Sohc Turbo Max of 300 whp (GOLDBERG)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by GOLDBERG »</TD></TR><TR><TD CLASS="quote">8.0 is way too low man....thatyd suck all around..even weaker off boost driving(if d16's arent weak enough as is), less power per lb of boost...slower spool time, etc</TD></TR></TABLE> I'd have to agree with the wrestler above me. I am trying to keep it simple, very simple. What I want to know is would it be safe to bore the stock sleeves out .5mm and would a stock headgasket still be compatible.
06-28-2003, 02:08 PM
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Re: Build up for Sohc Turbo Max of 300 whp (turbozxi)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by turbozxi »</TD></TR><TR><TD CLASS="quote"> I'd have to agree with the wrestler above me. I am trying to keep it simple, very simple. What I want to know is would it be safe to bore the stock sleeves out .5mm and would a stock headgasket still be compatible. </TD></TR></TABLE>
</TD></TR></TABLE>
07-16-2003, 01:01 PM
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Re: Build up for Sohc Turbo Max of 300 whp (Tur*bLu)
i have 8.7:1 compression w/ stock sleeves bore .10 over with srp pistons and eagle rods....i made 205whp on 6psi, just using the afc hack...boosts like a stock turbo car...The low compression doesnt hurt anything on the bottem...its nice to have the gas saver when not in boost....the turbo spools around 3500 and pulls to redline and then some...i shut down at 6900 rpms and was still making power could have ran it to 8 but with no knock meter or detonation mgt. i wasnt risking blowing the motor...which is the other reason im only running 6psi, wont risk the motor until i have my j&s....9:1 will be good dont go with high compression and aslong as tuned good teh stock sleeves will be fine with 300whp...thats my goal also...but i want 300 all-da-time...gotta love the D-series, i live for that underestimated power monster..haha, good luck
Travis
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07-16-2003, 01:16 PM
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Re: Build up for Sohc Turbo Max of 300 whp (VTC_CiViC)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by VTC_CiViC »</TD></TR><TR><TD CLASS="quote">Stock block, 9.5:1 JE's, Eagles, T3/T04E .48/60 trim, Hondata = 300whp all day and night.</TD></TR></TABLE>
hey dave, where did you find JE's for a D16 that allows for a 9.5 CR? All i've seen are SRP's for 9.0 and 10.5
hey dave, where did you find JE's for a D16 that allows for a 9.5 CR? All i've seen are SRP's for 9.0 and 10.5
07-16-2003, 02:30 PM
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Re: Build up for Sohc Turbo Max of 300 whp (swrdply400mrelay)
WHo gives a flying f*** how much hp you can make per pound of boost. I say run low compressing, between 8.5:1 to 9:1. Thats what most of the OEM's do in their turbo cars. Mine is 7.8:1 and I have no driveability problems.
I mean, if you get jollies for getting 20 hp per pound of boost then I dunno, run 15:1 compression and 1 pound of boost. Personally, I like my low compression motor on 20 pounds of boost on pump gas. It is much easier to tune and with a nice torquey cam I have power down low, and the boost keeps the party cooking well into the red area of the tach (over 7000rpm's in a 4g63).
I mean, if you get jollies for getting 20 hp per pound of boost then I dunno, run 15:1 compression and 1 pound of boost. Personally, I like my low compression motor on 20 pounds of boost on pump gas. It is much easier to tune and with a nice torquey cam I have power down low, and the boost keeps the party cooking well into the red area of the tach (over 7000rpm's in a 4g63).
07-16-2003, 03:23 PM
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Re: Build up for Sohc Turbo Max of 300 whp (danl)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by danl »</TD></TR><TR><TD CLASS="quote">Mine is 7.8:1 </TD></TR></TABLE>
jeez that is even lower than my Zcar had originally...
Stan
jeez that is even lower than my Zcar had originally...
Stan
07-16-2003, 05:16 PM
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Re: Build up for Sohc Turbo Max of 300 whp (90crxsi)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by 90crxsi »</TD></TR><TR><TD CLASS="quote">
jeez that is even lower than my Zcar had originally...
Stan</TD></TR></TABLE>
Yeah, and I get 5 psi of boost on a 16g at 2000rpm's and full booost (20 psi) at 3100 rpm's or so. Ignition timing and cam choices are pretty important for cylinder filling before boost. IF you can make the motor fairly torquey with a nice low end cam you can spool nice and early. I like to run her a little lean before boost comes in to help heat things up and make the motor more thermodynamically efficient which helps raise the EGT's a tad and spool the turbo better. Low CR motors need a lot more ignition advance when not in boost due to the slow burn rate. Its not as much the CR that hurts people, but people not knowing how to use it properly. Having totaly control over not only the fuel curve, but timing curve is key. Having dynamic control over the timing curve (knock retard unit) is also key for helping the car work everywhere else but the dyno. The timing curve during a second gear pull will be DRASTICALLY different from the target timing curve in 5th gear at 150+mph.
jeez that is even lower than my Zcar had originally...
Stan</TD></TR></TABLE>
Yeah, and I get 5 psi of boost on a 16g at 2000rpm's and full booost (20 psi) at 3100 rpm's or so. Ignition timing and cam choices are pretty important for cylinder filling before boost. IF you can make the motor fairly torquey with a nice low end cam you can spool nice and early. I like to run her a little lean before boost comes in to help heat things up and make the motor more thermodynamically efficient which helps raise the EGT's a tad and spool the turbo better. Low CR motors need a lot more ignition advance when not in boost due to the slow burn rate. Its not as much the CR that hurts people, but people not knowing how to use it properly. Having totaly control over not only the fuel curve, but timing curve is key. Having dynamic control over the timing curve (knock retard unit) is also key for helping the car work everywhere else but the dyno. The timing curve during a second gear pull will be DRASTICALLY different from the target timing curve in 5th gear at 150+mph.
07-16-2003, 11:40 PM
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Re: Build up for Sohc Turbo Max of 300 whp (VTC_CiViC)
So do we agree that the d16(SOHC vtec) sleeves can hold 300whp daily on stock sleeves? And maybe a little more on weekends with race gas in the tank...
07-17-2003, 01:57 AM
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Re: Build up for Sohc Turbo Max of 300 whp (CzanSOHC)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by CzanSOHC »</TD></TR><TR><TD CLASS="quote">Stock bore, stock headgasket. New oil pump, water pump. ARP headstuds and bolts, OEM stock bearings and gaskets.
For only 300 whp, i don't think you will need any head work. </TD></TR></TABLE>
Really? Hmm...makes me feel better - if your right that is. OEM bearings and gaskets can hold high amounts of boosts, and no head work ? What if your head is up there at about 150k miles... ?
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