how to get 220whp on ITR n/a

King of R's

New Member
New dude here! whazzup y'all? I have 96 integra type R I'm looking to get toda spec B's or jun type 3 cams and a toda ITB kit what other mods do you guys suggest I get to get to my goal of 220whp n/a without touching the bottom end an on 92 octane
 

BoostedITR41

New Member
King of R's said:
New dude here! whazzup y'all? I have 96 integra type R I'm looking to get toda spec B's or jun type 3 cams and a toda ITB kit what other mods do you guys suggest I get to get to my goal of 220whp n/a without touching the bottom end an on 92 octane
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without touching the bottom end will be nearly impossible. 200whp on stock bottom end isn't easy. for a big cam to work well you need more compression.
 

dc2nr

New Member
ive heard the jun stage 3's dont give that much hp, but thats what i heard =/

good luck on that without touching the bottom end.
 


Baldy201

New Member
build the head. you are going to have to rev pretty high to get to 220 with out the bottom end built. If you get the bigger cams you are going to have to up the compression, do doubt. The JUN and Toda's have a long duration that makes the vavle close later in the compression stroke. there for resulting in lose of compression. Why would they do that? When you rev high like past 8k RPM's the air as momentum and if you close the valve too early the cylinders dont completely fill. It doest matter what you choose Toda or JUN they are both good cams just expect to rebuild the bottom end.
 

TegSox

Super Duper Moderator
DC2_Project said:
get the head ported, polished, and built
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His car is a Type R, it's ported and polished by hand by Honda already.

BoostedITR and Baldy are right, the main thing you'll want to do is get more aggresive cams, but if you do that you'll need to up the compression. The only way to raise compression to a large degree is installing high compression pistons. You can raise it a little with a thinner headgasket, and then a little more by milling the head, but that wont be enough for the level of aggresiveness of the cams you'll need to hit 220 whp. You'll need big cams, and therefore big compression. That's the second part of a cam install that people like to forget about, all aftermarket cams need a compression increase (and proper fuel tuning) to perform at their full potential and hit those huge HP numbers that companies brag their product can put out in their advertisements.
You'll also need a 2.5 inch exhaust system with a straight through muffler design. Also get a custom header made by HYTECH.
 

Eviloliv3

Nobody Listens To Me
ITR heads do not have a hand port and polish from the factory. but their heads are cast with better flowing ports, LIKE it had a MILD port and polish.

youll still gain flow with a good p+p job.
 

TegSox

Super Duper Moderator
Type R heads are ported and polished BY HAND by Honda, I promise you. Type R crankshaft's are also hand balanced by Honda, because a machine can't get exact enough for the desired spec.
But that's not to say that once he had an engine package planned out that the factory P+P couldn't be improved upon, I'll give you that. A P+P is done specific to a given car's particular engine package, desired powerband width and location, and peak HP location, which all need to be pre-determined before the work is begun. P+P isn't just some generic process you have done to a head, it takes a lot of pre-planning so the right amount of material is taken off in the right locations.
 

KaosTheory

DSMER
stock ITR heads are port and polished from the factory, the only diff. between a Type R and a GS-R are basically the port and polish and upped compression!
Try head work, cam's, new ECU, Lower the V-TEC,(rpms when it kick's in), And then the basic bolt ons, cam gears, pulleys, lighten the drive shaft, etc.
 

Baldy201

New Member
The Type R head is the same as a B16 head with a PnP. The GSR head has a totally diffrent construction than the ITR head. You are correct if you ment that they are the same in the regards that they are both VTEC heads but the components that make them up are diffrent.

If you look at TegSox post in this forum you can see that he has better cams and way higher compression and he is makeing 190 to the wheels. Granted he has not done any head work but he has touched the bottom end and still cant reach 200 hp(not knocking on your setup TegSox)
 

TegSox

Super Duper Moderator
Heck, I'm not even hitting 190. When I finish tuning this present setup I have now, I think we'll get it up into the high 180's, maybe touch 190, but we'll see.
But yeah, to hope to hit 220 whp you'll need higher compression than I have (12:1), and cams with at least 12 mm of lift, I would suspect. My Spoon cams have 11.53 mm of lift on the intake cam, and 11.13 on the exhaust cam. Type R's are 11.5 intake and 10.5 exhaust. The lift of the cam lobes is the number 1 factor in gaining maximum amount of overall HP, the duration and overlap of a set of cams is mainly used to place the powerband where it is best suited for your particular engine package and the gearing of your tranny.

Some cam crib notes:
-Increasing lift: Increases HP and TQ, but doesn't move the powerband.
-Increasing duration: Moves peak HP and TQ to a higher rpm and the actual value of both also increse.
-Increasing overlap: Gives you more peak HP, but less low end TQ because you bleed off more cylinder pressure (lose compression) through the valve openings the more you overlap the cams.
 
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