DDTECH

Example of a AWESOME powerband, for a street car.

raverx3m

iTrader: (1)

I belive rich tuned dyno is one of the lower reading dynos. every dyno I ve seen is always lower than similar builds from other dynos.

DDTECH

yes, From what i'm understanding a good 8% lower then most.

93egSLEEPER

Like I said...it is the area "heart breaker"

I had a 82mm GSR dyno @ speedfactory's dynopack and put down 192. On rich's dyno dynamics it made 178. Ran consistent 102mph traps and and 13.75's

raverx3m

iTrader: (1)

but every tune ive seen from that dyno is very smooth
I got mine tuned there 3 times so far and it was very nice to drive... I miss vtec

93egSLEEPER

Rich is a hell of a tuner and an all around good dude.

DDTECH

Smooth graph can be attributed to alot of things.

Properly setup dyno and correction as well as tuner is a very important part.
The Other is camshaft design. Primary design is important, Larger, unstagged primaries produce a low/midrange torque curve that comes on stronger and quicker. When vtec is ready to cross over, its less of a stress and more control transition.

Most Huge Dips going into vtec and what not can be contributed to Small primaries, going to a larger vtec lobe, a great example of this is Tuner 2s. Others have to do with intake length, whether or not you have a filter, header length and pairing and manifold design.


Overall - Its great to see nice, smooth linear powerband, for a street car.

PyroProblem

Nice build. Curious as to why the power levels out at 7800 rpms (why it's going into vacuum) . There's probably another 20hp left...

DA BOSS

iTrader: (1)

^ see the TQ fall off as well? He needs to open the intake cam up sooner to add some tq and HP (if he has room w/ the pistons/valves). My guess is that the cams are set at 0,0 but maybe he will answer.

93egSLEEPER

He was creating vacuum at 7800 rpm for some reason so they couldn't get a full clean pull. I would expect to see a new graph in the new future once they figure out the issue.

DA BOSS

iTrader: (1)

^aaaah. Kool I'd start with PCV and work from there.

thevtecnician

Just wanted to share my setup

-f2b setup in crx
-F23a1 block
-F22a head gone over, mild port polishing
-k20a2 86.5 shelf pistons (unmodified)
-delta 272 dialed in
-custom tri y 2.5" header
-70mm port matched tb
-ported h23a1 intake manifold no butterflies, stock I.M. gasket (main runners untouched)
-balancer shafts left in, no belts
-shaved crank pulley
-custom 3" intake
-e85 fuel

Tuned on dynojet.

1godspeed

B20vtec....

2000si head no pnp
Full supertech valve train flat valves
Skunk2 pro3 cams
Aem tru time cam gears
Edelbrock performer X mani
Blox 76mm throttle body
Bisi rep header custom 3' down pipe

B20 84.5mm
Wiseco forged pistons 13:1 comp
Golden eagle rods
Polished balanced n blue printed b20 crank
Act lightened flywheel
Act 6 puck clutch un-sprung
Jdm type R tranny 4.4 final

Tuned on e85

Maluko

Fuel used?

93egSLEEPER

He's in CA so I'd guess 91

blacK_Dc4

yea, it's 91 oct.

Here's some dyno charts that I forgot to add here : Ill divide it up into a few posts so it looks more organized lol.

Setup :

- RLZ CNC Head
- Skunk2 Pro3 cams
- Skunk2 Ultra Street Intake Manifold
- 85x89 12.5:1 Compression
- PLM Hytech Big-Tube Header

91 oct = 257whp / 170tq

FTW Red fuel = 273whp / 181tq

blacK_Dc4

87x89 - TSX Pistons
K20A2 head
RBC Intake Manifold
Skunk2 Stage 2 Cams
Rcrew Header
Apexi Noir Exhaust (Major Restriction)

- 91oct

- 261whp / 189 tq

blacK_Dc4

Setup :

- RLZ CNC Head
- DDTECH Reapers
- Skunk2 Ultra Street Intake Manifold
- 85x89 12.5:1 Compression
- PLM Hytech Big-Tube Header

- 91oct
- 263whp / 172tq

1991_crxsi

iTrader: (1)

simple set-up and great result.... dang. good work.

ryanplayjoint

B20 rs machine itr copies

Bone stock 99 si head

Usdm itr I/m

Auto zone sri

Craigslist $50.00 header

EBay test pipe & exhaust

Vibrant muffler

Rc310

Walpro 190

Tuned on neptune

RAMON B16A2

JDM B18c gsr stock block

CTR cams
omni 70-68 TB
Ebay Tri-y
2.5'' exhaust
Type R replica IM
90 octane
neptune

180WHP

93egSLEEPER

DISCLAIMER*** Low reading dyno (10% low on average) w/ no cam tuning

84.5mm B20B block
89mm crank w/ stock PR4 rods and ARP hardware
ITR rep pistons (12:1-ish)
Full rotating assembly balanced (crank, rods, pistons, flywheel, pressure plate)

GSR head- casting cleaned up and slight port work
Prodigy race engines Performance VJ
Stock intake valves & Ferrea 6000 exhaust valves
ST 100lb springs and Ti retainers
S2 LMA's
DDTECH stage 2 cams
Real RMF drag header
VictorX intake w/ Omnipower 70mm TB
3.5" to 3" custom intake arm w/ V-stack and filter
Grams 320, Aeromotive FPR, AEM fuel Rail, RDX injectors (base pressure will be 50-60psi)

S4C/S80 tranny (ITR 1-3 GSR 4&5) w/ OEM ITR LSD and 4.785FD
Synchrotech carbon synchros
Exedy stage 1 clutch
Fidanza 7.5lb flywheel

217whp/150tq

I will be doing some cam tuning and track visits soon

sowellman88011

built and tuned by dizzy engines el paso tx
b16a
benson sleeved & bored 84mm
12.5supertech pistons running about 11.5:1cr
scat rods
fully balanced with ati super dampner and 9lb flywheel

pnp gsr head
supertech valvetrain
skunk2 pro1s
victor-x im (gonna upgrade later)
custom intake
custom exhaust here- https://honda-tech.com/all-motor-nat...3194744/page2/

(edited) im at 3500ft altitude which makes effective cr 10.8:1 and tuned on a mustang dyno

DA BOSS

iTrader: (1)

^ I'd expect more from that CR. What header do you have? 4-1? 4-2-1?

EJ_ALLMOTA

those numbers do seem low.. I managed 184whp and 130tq out of my old LSVtec setup which was

LS block/ crank
B16 pistons shot peened on LS rods

B16 head w/ stock ports
Type-R cams
JDM ITR header
AEBS intake manifold
Tuned on Chrome on a DynoJet Dyno

Khrislsvtec by
Khris H., on Flickr