H22A turbo

[tazos99]

Hey guys i'm a newbie on this forum. I have my accord for a couple of years and the look was almost finish i'm starting to modify the engine

i just got an H22A i'm thinking about what i need to put turbo on it

I"m looking to buy a kit with everything like the FMAX kit but for more than 10 psi i think i need all of these thing to build my engine for that level of boost

JE Piston with 9:1 ratio
Crower rods
Valves kit
Camshaft optimized for turbocharge
Blockguard
and maybe a port polish job

What do you think about that ????

[95AccordVTEC]

According to my car's manual - the 94-97 Accords already have a 9:1 compression ratio.

[95AccordVTEC]

....unless of course you have a 99 accord....lol - I just saw your userID. ok, nevermind - I don't know anything about 99 accords

[96cordlx]

The H22A comes stock with 10.6:1 compression. If you are planing to turbo it you need to drop that to at least 9:1, but 8.5:1 is the optimal compression for a turbocharger on that engine. I know its only .5 difference but you will definetly feel it on the top end if you plan to run higher boost.

[ACCLUDE]

The comp ratio you choose depends on your setup. I have seen an Accord with an F22A (4th gen) motor that had the compression bumped up to 10:1 and was pushing more than 10 psi of boost without any problems. The stock comp on that motor is 8.8:1 but based on the mods done to that motor it was decided that the 10:1 comp would be the best option. In general, yes you want to lower the comp ratio if you plan to boost, but I suggest doing what will work best for your setup. If the H22 is USDM, then you have 10:1 comp and if it's JDM its got 10.6:1. If you are keeping it below 10psi of boost then you should be alright with either of those comps, but lowering it will alow you more "play room". If you keep it at the stock 10:1 or 10.6:1 then you need to be more careful about the cams you chose that they don't have too much overlap and also with the timing you set the motor to. Too much advancement on a high comp. boosted motor means big problems.

[tazos99]

My accord is a 94 EX the 99 in my name is just to be sure tat nobody have the same.

thanks for all answer

i know i need around 9:1 compression because if i set the boost higher than 10 psi i can get detonation problem if i use bad quality fuel.i dont want to put racing gaz each time.With that ratio the super should be fine

for the cam i'm not sure it was a good idea to change it i need some more info when i was fix on wich turbine i'll use at this time my choice is a T03/04B

do you know the aquamist system that help detonation for high boost the system add water with the fuel to prevent the pink problem and high boost level.


thanks

[AccordTunr333]

i'm doing an H22a turbo as well. Nice to see someone indulging in the project too. My block right now is all stripped down, ready to be bored and re-sleeved. So next for me are the darton sleeves...Then JE dished pistons, eagle h-beam. Going Ferrea headwork which is gonna cost me though.

I have a question about cams and rocker arms. given what i currently have listed, who makes cams for this application though. thats where i'm stuck at. I want to run high boost and am building the bottom end for it. I've also seen on ferres's website a rocker arm replacement made from high strength aluminium but what is does is eliminates the vtec function? Do i actually need VTEC or should i keep it with the turbo application?

-Garrett

[96cordlx]

OHC engines don't have rockers arms, so i'm not sure how to go about answering your question.

[AccordTunr333]

Gimme a break. I wrote that message at like 1:00 in the morning, so i'm not sure about the clarity of my thoughts then, but i mean i practically had it?!:)

For all you POLITICALLY CORRECT folks out there what i meant was the Roller Rocker Mechanism. Here's a picture of the Ferrea one:
http://www.ferrea.com/Our_Products/Import_Cars_Roller_Rocker_Syst/Page60.jpg

Here is what Ferrea says about the product:

"The Aluminum Magnesium Roller Rocker System was designed to replace the factory "Steel Rocker Arm System" and eliminate the V-TEC Function. Factors such as weight, mass moment of inertia, deflection, and cycle durability are taken into account throughout the design and testing process."

Premium Material:We use special high quality 70 Series Aerospace Aluminum-Magnesium Alloy, heat-treated to provide superior strength at elevated temperatures.

Manufacturing:Fully CNC machined, profiled for weight reduction, (OEM unit weighs 108% more) which improves moment of inertia, and increases the RPM range of Valve-train.

Roller Wheel:The Roller Needle Bearings prevents roller from skidding across the camshaft surface, unlike the (OEM) stock rocker pad, thus reducing friction dramatically.

Tool Steel Pin:The Tool Steel Roller Pin is compressed between the rocker to stabilize the rocker motion throughout the entire RPM range.

Installation:Our Roller Rocker System comes with all hardware and requires no head modifications for installation.

-Garrett