300hp goal na f20b

[90_f20b_cb7]

so thats the ? is 300hp a goal the f20b can reach n/a?

with out bottle feeding too.

[visualpoet]

How much money do you want to spend?

[mndude07]

so thats the ? is 300hp a goal the f20b can reach n/a?

with out bottle feeding too.

Yeah, but its going to be more than you'll probably want to spend and it won't be streetable at all.

[visualpoet]

Yeah, but its going to be more than you'll probably want to spend and it won't be streetable at all.

You could run 300 whp on the street, you just couldn't launch it in 1st. Maybe not in 2nd either. You'd want some nice wide sticky front tires, and I personally would want an F series 5 speed instead of the quicker H series tranny, just to tame it down some. It would probably have a hell of a lope, but I believe it'd be streetable.

There's a couple of guys on here that are putting more than that to the wheels in their DD's, but they aren't N/A, which does of course make them a little easier to get rolling from a stop.

[CB7lx91]

There's a couple of guys on here that are putting more than that to the wheels in their DD's, but they aren't N/A, which does of course make them a little easier to get rolling from a stop.

and that kids, is called "boost lag"

[turbo90accord]

You could run 300 whp on the street, you just couldn't launch it in 1st. Maybe not in 2nd either. You'd want some nice wide sticky front tires

when i had 300hp i had NO problem launching on the street even on crappy khumho tires. and 300hp isnt enough power to launch in 2nd gear.

and that kids, is called "boost lag"

not with anti lag!

[Warudakumi]

so thats the ? is 300hp a goal the f20b can reach n/a?

with out bottle feeding too.

Probably wont' be streetable around that area. It would probably be easier to go with a H22A motor rather than a F20B reason being they have more easily accessible on the shelf parts than the F20B.....although of course lots of parts interchange between the two, you won't find specific parts made for the F20B unless you want to do some expensive importing elsewhere if you want a true N/A camshafts that will do more than Skunk2 or crower.

The reason why honda made the F20B was to compete in 2.0 liter competitions. To get that motor from it's stock 180-200HP to 300HP n/a is no simple task at all. The JAACS accords are supposingly 280PS and they are all out stupid tuned n/a however their suspension is a work of art as well. Check out videos of them on youtube where they are keeping up and passing Ferarris and sniffing GT-Rs around the track!


You could stroke your motor to 2.4+ and get a good tune to get a good boost in power and go from there. There are some guys just with skunk2 Pro2 cams and a built head only getting about 220-230+/- HP which is considerably good when just swapping a healthy motor would just start you at 177-180ish HP on a good day.

I know for awhile Pocketrocketsracing had a special build where they can turn a H22 motor into a H30... YES 3.0 liter stroked h22. Those were 300HP+ crate motors and costed over 18k-21k tho....so something to think about.
21K can give you a used subaru or evo with the same or more power and yet be streetable and daily driven.

[Warudakumi]

This is there H27 setup specs from a old honda-tech post. It appears their website has been down for awhile. They even sold these on e-bay way back in the day...the infamous H30 was a beast tho. The specs obviously where higher than this. This H27 was 315HP est.

BTW not knocking the F20B. At one point b4 my first H22a swap, I wanted this motor simply coz it could be had cheaper than the H22a at the time. But what stopped me was the OBD1 to OBD2 conversion and tiptronic tranny was not something I was trying to spend money on a shop installing into my auto CB7 at the time.

-----------------------------------------------------------------------
H27 H22 92mm bore/100mm stroke ---267WHP/201WTQ Mustang Dyno....est.~315WHP/236WTQ dynojet

--------------------------------------------------------------------------------

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 is 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 ~ 25mpg 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 a 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

[90_f20b_cb7]

sorry my net cut out last nite wierd

but i was going to type in i want to build this car as a dd but and this is the catch i want it to be track ready. i am puttin about 2500-3000 in to the sus. i have acces to sunoco race gas year round. so if i got to run that all the time i can.

and i dont ever race on the street unless its an on-ramp then i will do a good 3 gear pull. or if its something that begs to be beat(ricers/punk kids with mommy-daddy car) and then i do so very catiously. and never in housing areas. the car draws to much atention to race in cities.

i have the f22 trans now was think bout getting the f20's but not sure yet. i would rather not run race gas all the time. was thinkin stage 3 na cams, over sized valves, springs, retainers, p & p.

its got 330cc injectors fuelrail fpr from a h motor, cai, catless 2.5in exst, 2in dia runner 4-2-1 headers made by a shop here in slc, aero turbine 2540i, muffler, 190lph warbro pump. ac and ps del and a light wieght crank pulley. heat wrapped headers and cai. custom tuned p28

i started with the 200hp mt motor add all that. so its a bit of a good start yeah?

[2point6]

300 hp is not even achievable.

[90_f20b_cb7]

300 hp is not even achievable.

wow! buch of maybe then blamo! a total buzz kill out of no where. reason for say this when there are others say "yes we can!" (lol)

[fatboy1185]

300 hp is not even achievable.

Not with the stock block.

[2point6]

It just cant be done. BUT what do I know...

[19dabeast85]

If you build the F20B with 12:1 pistons (93 octane), stage3 cam, fully ported head & IM, quality header & 3" exhaust I'd estimate your whp to be around 220ish, but then I'm no F20b expert.

You may be better off to get an h22 and throw some stage1 cams in it along with 3" exhaust and that alone should put you close to 190whp, port the head & IM and you should be able to achieve 205ish whp. Gonna be your cheapest N/A option to obtain some level of real performance.

I'm an F22a man so I'll be building that platform in the future, all of these engines are expensive to get N/A performance from though.

[4CYLPOWER92]

wow! buch of maybe then blamo! a total buzz kill out of no where. reason for say this when there are others say "yes we can!" (lol)

Scott was being sarcastic. I think? He got 300hp from his H22, so I would think it would be doable with the F20B.

http://www.cb7tuner.com/vbb/showthread.php?t=141955