i have a 96' spec type-r motor that i had turboed in a 94 LS integra. it has a 81mm head gasket and GSR cams for internals. im running 9lbs right now making 308 to the wheels. just wondering if i could ur it up just a hair more. i run 12.6 in the quarter on street tires and will be buying slicks soon. i just want insure that i hit 11's

 

Well for starters, you're losing out by not having the ITR cams...those are a power adder right off the bat. Also, you can't really think in terms of PSI for a goal. Obviously you're limited at 11.2psi with the stock map and if you want to run more, a different map, typically the GM3bar, is required.

I'm not sure what fuel you're running, but if i were you, i wouldn't push it any futher than about 325-330whp...depending on the fuel.

 

i have a 3 bar map senser, and the GSR cams have a longer duration, thats why i put those in

 

You're still losing out by running the GSR cams instead of the ITR cams. Its not going to be huge, but it might be something to think about.

If you already have a 3bar, you may conisder upping the boost and making more power, but just know that it is stock and can only do so much. If you're on 93 octane, i'd call it quits around 340whp, but if you run 100 or 110 octane....or my personal favorite E85, then i'd think about making upper 300whp. It might be something to look into if its available in your area

 

my buddies stock usdm 98 motor makes 350whp on only 8lbs of boost rind rare and yeah itr cams are better even turbo app.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by ltgrazer65 &raquo;</TD></TR><TR><TD CLASS="quote">i have a 3 bar map senser, and the GSR cams have a longer duration, thats why i put those in</TD></TR></TABLE>

thats exactly why u dont want the gsr cams. longer duration for turbo is no good. u want the duration to be a bit shorter. when ur boosting u want to be able to open and close your valves as quick as possible. ud ont want them to stay open for long. type r cams are way better for turbo and they respond great to tuning

 

i still have mt type-r cams, the funny thing is the shop in town told me to put those in instead, o well

 

don't push it much harder than you are now, the sleeves are at the point where their longevity is decreasing massively

 

stock 8-10psi

 

https://honda-tech.com/zeroforum/16

8-10 is correct. I wouldn't go higher than 8 personally; stock.

 

Put your ITR cams back in and keep everything else as is.

 

i would say 9psi would be reliable

 

if i did put them back in, i would need a re-tune correct?

 

Yes you'd need a retune. For your setup, i wouldn't really push past 11psi because at the rate you're going, you'll make in the 325-335 range at 11-12psi. That's plenty of power on a stock internal pump gas setup. You could do more but realize that you're decreasing reliability. If you want to change fuels and tune on E85, then shoot for 375whp if you want. Just dont limit yourself in terms of PSI....think in terms of horsepower.

 

I'm surprised no one mentioned this yet, but alot of people who've made nice power used GSR intake cam and ITR exhaust cam.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by ltgrazer65 &raquo;</TD></TR><TR><TD CLASS="quote"> i just want insure that i hit 11's
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Horsepower can get you so far, Most of it comes from your driving.. drive your car like you are not afraid to blow it.

 

yeah i need to work on my 60ft it is still in the 2 sec. range, but i need drag radials os slicks for that which i don't have yet

 

well i have the GSR cams in now, and everyone is saying to put the type-r ones back in, o well

 

not sure, but damn, such a nice motor. I would have stayed N/A. Sorry useless input I know.

 

i dont get why people want to stay NA...its such a huge waste of potential..

 

I personally wouldnt boost an ITR motor. GSR or LS no doubt, but ITRs are worth too much to take that risk when a gsr is capable of putting down similar numbers.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by posHonda &raquo;</TD></TR><TR><TD CLASS="quote">I personally wouldnt boost an ITR motor. GSR or LS no doubt, but ITRs are worth too much to take that risk when a gsr is capable of putting down similar numbers. </TD></TR></TABLE>

I agree to a point. An ITR engine is great for all around power on boost. Its awesome NA (off-boost) and great on boost. The head and cams are great for turbo applications, it revs high and has a huge powerband with the right setup. It would be a great one to use...the hold up i would have is that they are NOT cheap and i would hate to blow it up. GSR longblock + ITR cams for me

 

ok.. there's a little confusion here about ITR and GSR cams.

ITR cams have a longer duration than the GSR. That is why the shop told you to put the GSR cams in. ITR cams are made for high compression to make more power.

But to the OP, 308whp is pretty nice power and if its its reliable, thats even better. Just keep with what you got unless you build the motor internally.

I'd be happy with 300whp.

 

exactly N/A is cool in all, but boost is way better

 

OH i am VERY happy with 308 hp, it would be nice to hit 11's but if i can't it is still fast and fun to drive!!!!