Size tb do i go

Post by **Lude-dude** » Wed Sep 12, 2012 6:58 pm

my cams are 63422-2

on this page:

http://www.ludegeneration.co.uk/honda-p ... -t742.html

Stage 2 all motor/turbo race, up until the breakdown it went very nice

lots of torque over the rev range, felt more like a race/track car

a nice amount of difference anyway

Pumpingiron · Post by **Pumpingiron** » Wed Sep 12, 2012 7:38 pm

You think is to aggressive?

The lift and duration they are almost the same as the ATR ones....even lower...not to be a gentleman's sausage but in almost all forums and info (found in accordr.org and on other forums measured) out there they say that ATR cams have:

Normal H22A vs. "Type-S" H22A7/8
Intake opening (BTDC)
15°..................15°
Intake closing (ABDC)
40°..................45°
Duration: 235°.... 240°

Exhaust opening (BBDC)
40°..................45°
Exhaust closing (ATDC)
15°..................15°
Duration: 235°.... 240°

Gross valve lift measured w/1.55 rocker ratio
Normal H22A vs. "Type-S" H22A
Intake:
(mm) SAE (mm) SAE
(11.5) 0.453"..........(12.2) 0.480"

Exhaust:
(mm) SAE (mm) SAE
(10.5) 0.413"..........(11.2) 0.441"

It's why you can get as much power than Alex mate!Sorry

I will mesure soon my own ATR cams since i like to make sure of these things!

Post by **Lude-dude** » Wed Sep 12, 2012 7:47 pm

came along at the right price, so not too worried

to be honest I dont quiet understand all those cam profiles etc..

I did get the impression they were aggressive, from the idle and behaviour

but guess I dont have much experience to compare it with anything

Pumpingiron · Post by **Pumpingiron** » Wed Sep 12, 2012 7:53 pm

You still have your old cams? If so...i,m going to be a gentleman's sausage again...they are the same as the ATR one (if its a 5MT 4ws spec)...

A1ex · Post by **A1ex** » Wed Sep 12, 2012 8:01 pm

I can assure you the ATR cams are different to the a5 cams. The ATR head is fitted with stiffer spring than the a5 to compensate for this

If the ATR cams are more aggressive how come ld is over cammed and I'm not? BTW all this info is from PAW, the guys there seriously know h22's. Rich runs a h22 teg in the vtec challenge with 275bhp and wins most all races

Pumpingiron · Post by **Pumpingiron** » Wed Sep 12, 2012 8:09 pm

Check the part numbers in the EPC or in Hondaoriginalparts!

He's not over cammed that's the point...it's why he got lower numbers than you! He would get better results with the ATR cams...

A1ex · Post by **A1ex** » Wed Sep 12, 2012 8:19 pm

I did before I got them, ATR, a7 and h22a are the same. H22a5 is different.

If he's not over cammed why did the tuner tell him and me that? He does know what he's talking about ya know

Pumpingiron · Post by **Pumpingiron** » Wed Sep 12, 2012 8:28 pm

Man look at the cam specs by yourself, i'm not going to tell your tuner is wrong or something like that...

Just look at the skunk2 Pro1 and compare with the crower(and by the same time the Jun)....in the states we put the pro1 in stock h22a1 with 68mm tB and get more that 230whp with it...stock internals and everything..

Your right, the UKDM 2.2VTI as the normal cams, i was looking in the European market, our VTI as the same cams as the ATR...my bad!

A1ex · Post by **A1ex** » Wed Sep 12, 2012 9:02 pm

So we come back to if I add a 68mm tb I'm going to get 20-30whp over my current setup?

What Ron fuel you running for those numbers?

Pumpingiron · Post by **Pumpingiron** » Wed Sep 12, 2012 9:48 pm

No you don't get that much WHP with TB, based on your 15% calculation, like i said depends on the dyno, the 200-210whp values are maybe greater than what your dyno give! But in a overall set-up with some tune it can bring a 10whp, of course if you have more cam opening you will need more TB and exhaust...

I'm making a set-up close to you let me list a few diferences:

My motor is at full potentional with current parts and makes 228bhp & 174lb/ft of torque. I have Type s intake, 62mm tb, ATR inlet manifold, factory ported head freshly rebuild, ATR cams, mugen exhaust, decat & evo 2 cat back all tuned with an hondata s300. This is on stock compression.

I will use a 68mm, ATR inlet manifold port-matched and ported, h22a5 ported head(yeah the previous owner made the valve guides tapered and didn't have time to changed them), atr cams, Custom exhaust 3'' then split to 2.5'', SolidFab intermediate box and final boxes, decat probably, tuned with eCtune...some cam gears, F1 lightened flywheel, 370cc injectors, fuel pressure regulator(set to oem tho), flat face valves, Balancer shaft eliminator kit

In all i'm looking to a 210whp in usdm spec dyno...i don't know how much i will get in dynos in here, but the main thing to see is a bigger inlet system requires a bigger outlet systme....if oem ek9 got 57mm exaust a h22 should at least get a 63mm if not bigger, my friends engine who got the 210-220 values had a 3'' exhaust, and bigger injectors as well the 68mmTB...

Why? Cause bigger exhaust and inlet will move more air all around, with the usual oem overlap that will make the AF more lean, so it's why in the us they overreach the oem injector capacity, it's also why you get more power overall...but then it's up to every one, 3'' it's louder, more fuel = more consumption and more gazes on MOT...so yeah in europe we are limited...

was on 91Ron if i recall