315whp NA H22 *ahem* H27

[dcdc]

Taken from honda-tech.com

Link

H27 H22 92mm bore/100mm stroke 315WHP/236WTQ dynojet---267WHP/201WTQ Mustang Dyno « » 2:33 PM 9/19/2005 Reply Edit

H27 by Pocketrockets Racing

Please keep in mind this is an engine designed for European autocross, it is not a drag racing engine.
I have no problems making a purely drag race engine that can do +25 more WHP than this engine....I am well aware of the K and F20c series and all that Jazz. We are working on them too.
In fact I can make a 2599cc engine with a box in box Wiseco piston with a quite short(relatively speaking) 95.6mm stroke for high RPM all out effort.!!!

This is a Mustang Eddy current dyno, which is known industry wide to read 15% below the dynojet.
It is well known that a standard H22a 190-200 crank HP h22a will make ~160-163 whp on a dynojet ...and 141-144 whp on a mustang dyno.

This engine only has 12.8 : 1 static compression as this designed to run on and limited to 100 octane fuel.
It also only has 272 degree @ 0.050" lift Crane roller cams, opting for this setup to have a broad midrange torque curve.
We have achieved 267.6 WHP and 200.7 WTQ on the Mustang dyno, Independently done and verified at KVR performance, thanks Edwin and crew!
This translates to ~ 315 WHP and 236 WTQ on a dynojet.
and translates to 361-372 HP / 269-277 ft'lbs at the Crankshaft.
Torque peak is at 5750 rpm and max HP is at 8000-8250 rpm.
Tuning is done here, inhouse.

Our goal was to have 90% of maximum torque, available from 5000-8000 rpm, which we have achieved. I am content with the results.

some Specs of the engine:

92 mm bore x 100 mm stroke
Block uses Custom Darton ductile iron sleeves done by ERL Performance and further modified by us, for this unique application. Thanks to Jeff and Sean and Crew@ ERL
12.8:1 static compression
Importpowerhouse/RMF Custom 4 into 1 header with 2 1/4" collector
TWM 52mm modified Independent Throttle bodies with full enclosed custom PRR airbox, IAC, CAI, K&N air filter, TWM FPR.
525cc @ 43.5 psi Delphi injectors running at 52 psi fuel pressure
External Peterson fluid systems oil pump, wet sump, run from in behind the OEM Honda crank Damper, inline oil filter.
Crane/Ferrea 272 degree @ 0.050" lift roller camshafts
Crower adjustable cam gears
Crower 100mm custom billet crankshaft ....Thanks Brian and crew @ Crower's.
Crower Endurance pro-billet steel rods
Rod/Stroke ratio is 1.58 : 1
Wiseco custom 92mm pistons and rings, lateral gas porting...Thanks Brian and crew@ WIseco.
Ferrea roller rocker arms, valves, springs and titanium retainers
Custom P13 cylinder head with all Porting/headwork done here inhouse
Full 3 inch Thermal Research and Development stainless exhaust system with muffler, rear exit.
Denso IK24 spark plugs with magnecor wires
AEM Engine management System using OEM distributor
Aluminum flywheel.

Dyno run : 3rd gear pull...standard h box gearing....Sunoco 110 octane fuel.... Intake Air temperature were 118F-125F..........idles happily at 1200 rpm.....coolant temps never rose more than 10F during full 3rd gear pulls.

BTW....even with the full roller cams....the car got ~ 30mpg at 75-80 mph .....pulls 5th gear happily from 3000 rpm with less than 0.75 volt knock...LOL
I think I better make a 12.5:1 vtec one of these for my street motor....yippee....lol
I already passed emissions with a 2.2L 12.5:1 stge 4 Crower cams, so the bigger motor should be no big deal......lol

[preludacris]

mines still better...

[dcdc]

mines still better...

i'm sure it is...

what's your setup?

[bigteethygrin]

i love that intake manifold!!!

[dcdc]

i love that intake manifold!!!

that's actually a cover (with intake pipe attached) for quad throttle bodies

[ECU-MAN]

awsome,

[h22a accord]

Holy shit! good work guys! Is that an engine damper i see on the front of the engine?

[dcdc]

Holy shit! good work guys! Is that an engine damper i see on the front of the engine?

Looks like one. Anybody know for sure? If ur after one i've got the link somewhere, prelude parts can be hard to come around i dunno if thats true for h22 accords tho

[Trust-Me]

thats mental man..

[j-specAccord]

hahahahaha you can see his feet in the photo... nice socks haha

[Civic Type R]

Holy Crap !

white explorer socks ~ yo !

[sydteg21]

that is sick man