Newbie H22a5 project

Lawman41 · Post by **Lawman41** » Sat Mar 26, 2016 1:33 pm

Hi guys newbie here to the prelude community. Bought a2000 honda prelude 2.2 vti, i think the original engine was the red top 200bhp one but engine has now been replaced and replacment is h22a5 engine which i believe is 185bhp standard.

At the moment ive done the bodywork required and a colour change, and fitted a CAI and straight through stainless steel exhaust de catted.

I need some advice as i want to get my engine up to 240/250bhp. I know its not east but i can source all parts required as there is a big jap motor community where i am.

I've been told to fit ATR intake manifold and exhaust manifold, i think i already have the larger throttle body on my car as it was originally the 200bhp variant.

Is thos the right advice and what else could i do to get power? I've been told after this an ecu and map will get me going.

All advice is appreciated. Note i want to be naturally aspirated and not turbo'd. May go turbo in future.

Many thanks guys.

Lawman41 · Post by **Lawman41** » Sat Mar 26, 2016 1:35 pm

Forgot to mention i can also get my hands on the cylinder head with cams of an accord type r fairly cheap. Would this be recommended and worth it?

With all these mods would i reach 250bhp?

Rudelude · Post by **Rudelude** » Sat Mar 26, 2016 1:46 pm

Power is hard to squeeze out of these engines... a few guys have that kind of output but it seems supercharge is the way fwd.. Goode luck

Post by **4thgenphil** » Sat Mar 26, 2016 2:01 pm

Your best trying to get the original compression if you want to reach thoses figures. I managed 230 with jdm pistons

bennyboy · Post by **bennyboy** » Sat Mar 26, 2016 2:40 pm

As said, you'll be fighting the lower compression pistons. (10:1 in that?)
Really, you want the 11:1 from the A7/A8.
My car has the kind of power you're looking at so my thread my help. @nafemannathan has similar but a 5th gen.

89 UKDM BA4 4WS (resto job!) · Post by **wurlycorner** » Sat Mar 26, 2016 10:44 pm

That's pretty big power for an n/a build.
You definitely need an ecu and map to extract anything from mods to an engine in a 5g.

Post by **NafemanNathan** » Sun Mar 27, 2016 12:21 am

Mine is a healthy completely OEM H22a7 bar the S2000 injectors. I'm running a Type-S intake with K&N filter and a full Mugen exhaust, and the lot is tuned on an AEM ecu. Made 242bhp and 172lbft on a low reading dyno.

MaccaIRL · Post by **MaccaIRL** » Sun Mar 27, 2016 8:10 am

So those pistons really are restrictive nafe?

stinkypaul · Post by **stinkypaul** » Sun Mar 27, 2016 9:37 am

Wouldn't the lower compression pistons be better for boosting, such as with a turbo or supercharger? (genuine question)
Also lawman, I've seen somewhere on the selling pages, someone selling some top end components if you are really looking for 250 bhp

Post by **NafemanNathan** » Sun Mar 27, 2016 10:06 am

MaccaIRL wrote:So those pistons really are restrictive nafe?

Yes. Basic rule is the higher the compression the higher the power.

And yes, lower comp is preferred for reliability when boosting... But I know nothing about that

Lude Generation

Newbie H22a5 project

Newbie H22a5 project

Re: Newbie H22a5 project

Re: Newbie H22a5 project