So as stated before I've decided to ditch my old setup and go for an all-motor b20V setup. When I bought my crx it already had been swapped with a gsr motor and full-race turbo kit. Long story short it needed some TLC but I got it for a good price, so I redid the motor with new rods/pistons/bearings and made 434whp on 15psi after the it still had little constant problems and I grew tired of not really having traction so I've now decided to try and go for a super lightweight properly setup all motor car.

PICS OF SETUP BEFORE...







My build will consist of...

ITR head
super tech valves/guides/steam seals/keepers
Skunk2 Tuner 3 cams/cam gears/springs/retainers/LMAs
will be getting the head ported most likely locally

b20B block with
~13:1 pistons (wiseco or super tech)
eagle rods
CSS block

looking for 240whp+ and quicker than 11.99s. car will weigh 18xx or less in race trim...

some pics of what I have so far...

ITR head with skunk2 springs/retainers/lmas...




Skunk2 tuner 3 cams and pro cam gears...





I have the rest of the suspension on order including KStuned rear trailing arms, staging brake and front drag brakes. will update as more parts come....

 

why so much compression with such a relatively mild camshaft?

 

I didn't think then tuner3s were that mild. Skunk2 recommends higher compression them so I don't think the 13:1 will hurt power.

 

You can't run pro cam gears on tuner cams.... just giving you ****.

You will be disappointed w/ those cams. Find something w/ unstaggered/larger than stock primaries. Check out my thread for ideas as well. Pro 2's will murder those tuner 3's all day long. Just my opinion, take it FWIW

My cam list for this motor would be like this:

DDTECH Stage 2, Skunk Pro 2, Buddy Club IV, M24XX

I'd be willing to bet The tuner 3's will lose 10+ through the mids compared to any of the cams I listed, and most other will also peak out better.

Good luck

 

are the primaries really like stock on the tuners? I've been to the skunk2 webpage and (while I don't know what oem cam sizes are like on the primary side) the tuner 3s look like they have .075-.100 more lift than the tuner 1s and only .001 less lift than the pro 2s on the primary lobe.

I'm going to try them anyways since I already have them opened...if I'm that dissapointed I will...
1. get different cams.
2. get a NX kit.

 

Sounds like a good plan. There are better cams i'm sure but you should be able to hit your goals (as far as times go) with this setup. I remember IPG running tuner 3's in a crazy build and making good numbers. https://honda-tech.com/all-motor-nat.../#post43838023

 

I did the opposite of what your doing last year, took my all motor b20V to turbo. But it's a B20b block with an Oem B20b crank, Manley I beams, CP 12:1 Pistons, 4Piston CNC B16a2 head, Skunk Tuner 2s, full Supertech Valvetrain, Ported ITR intake manifold and TB, RC 310cc injectors, AEM fuel rail and Regulator, AEM V2 cold air intake for my 00 Si, PLM big tube header, Thermal 3" exhaust. Tuned on Hondata S300 it made ~235whp/~170wtq on 93 pump. Ran 12.50s in my 2550# full street trim EM1. Would have prolly gone into 11s easy in your 1800# CRX in that trim.
The Changes I made last year to get to my current state of boost were swapping to a Skunk2 Ultra manifold and 66mm TB, Skunk2 Pro1 cams, Full-Race ProStreet ramhorn turbo manifold with a GTX3076r, 3" FullRace downpipe, Tial 38mm WG, Tial BOV, Greddy FMIC, ID 1200cc injectors. Still tuning with S300 it currently makes ~450whp at a peak boost of like 13.5psi. I'm getting some slight flutter i believe from the small 38mm gate, may switch to a larger Tial soon. Tune seems spot on and the power is excellent. Could turn it up and squeeze a lot more power out of it but I'm trying to conserve the stock sleeves as long as I can lol. This motor has already been around for nearly 4 years, and 20k miles. 100+ passes on the street and track. survived 3 years and 15k miles all motor then I just made those changes and it's been under boost for about a year and another 5k miles or so with no issues. Same 84.5mm bore 12:1 shortblock as when I was NA. Thing has treated me well.

 

twin cam...thanks. Yeah, I saw that thread too. I'm not too hung up on max whp numbers. From what I rekon I should be able to get into the 11's with as little as 220whp or so as long as I can get the car and myself dialed in.

b20vtecVillian...turbo cars are a lot of fun. I've had several but never have done NA build or played with nitrous so I'm just trying something different.

 

I went from na to boost and likely won't ever look back unless I get something rwd and more displacement.

NA is really fun though and it can be really rewarding with the correct selection of parts for any particular goal. It's a way different feel than boost, that's for sure.

IIRC the tuner series have stock primary profiles which is where the pro series lineup comes in. It's not a bad thing, they just aren't a "race" camshaft. Always been fond of the pro series.

 

All motor definately is fun, especially when it's fast and underrated. I still use my stock Si valve cover and all, so under my hood for the most part it looked like any other bolt on B16a2 Electron blue Si. But went mid 12s and actually had TORQUE!! With the B20 shortblock haha. Power was very linear in NA trim as well, was fun on the street, fun on the AutoX course with the right tires, and even held its own on the dragstrip for what it was. Plus I still had all my stock "creature comforts" like AC/heat/PS a full stereo and full interior etc. I just went boost mainly because as racing has become less of a priority all I really I do anymore is the local 1/4 mile strips, so I wanted to go faster in that setup. Also a few of my Honda friends were getting faster and making more and more power so I had to follow suit or get left behind lol. K series is gonna be my next venture, these new motors are NASTY! .just don't quite have an extra 10-12k laying around I can spend on a K build/swap.......yet!

 

I think an 11 sec NA car will be fun especially when racing all the hondas around here...they're either stock single cams with a muffler or they put the largest turbo on their cars, boost as much as they can and run 12s at best because they insist on being "slammed" and running street tires.

 

Lol nice. That's always fun to dog the hell out of some fanboys with shitty setups and then show your not even boosted. There's some pretty clean/well built and fast Hondas around my area. (We've built and tuned quite a few of them haha) but numerous 300+hp all motor K powered setups, 600+hp boosted street cars etc.......isn't always easy to get a win around here these days, some good competition out there.

 

Your wastegate is fine. I'm running a similar turbcharger with much more power and staying with that same TiAL 38mm MV-S. "flutter" is your wastegate actuating at lower levels based upon the spring you're using in conjunction with your boost controller. Nothing more, nothing less.

 

update...I bought a set of Skunk2 b20 rods and I ordered a set of super tech 84.5mm 12.5:1 pistons instead of their 85mm 13.5 pistons. I don't think the extra 20cc and 1 compression point will be worth the extra risk and I've been really thinking of adding some nitrous on top later on.

 

I think that's a wise choice. I've always been told not to go more than 84.5mm overbore on stock sleeves when making power if longevity is a goal. I've been running my 84.5mm B20V with 12:1 CP Pistons and Manley I beams on a stock B20b crank for nearly 4 years and 20k miles and it has lasted. I think I already shared this info above, but 3 years and ~15k miles all motor at 230hp/170tq and now about a year and 5k miles boosted at 450hp/340tq. Same setup for both only thing that changed was the induction. I'm fully convinced if I were to have went to a larger bore I would have warped or cracked a sleeve by now. I've always been on pump fuels as well and no meth.

 

What kind of intake manifold and sizeT.B you going to use? id recomend the SK2 ultra street with a spacer for the manifold! and at least a 74mm t.b.

 

Still haven't decided on intake manifold...thinking either s2 pro, ultra street or ultra race. I already have a s2 pro 74mm throttle body.

 

Ultra street w/ spacers or victor X

 

+1 on the Skunk2 Ultra manifold. I now have a 3.5L Ultra w/1L spacer on my setup with a 76mm TB. Thing flows some air! I'm running it on an 84.5x89 12:1 with a 4Piston CNCd B16a2 head, SK2 Pro1 cams and FullRace GTx3076R @ 13.5-14psi and it feeds it very well! Wish i would have had this manifold back when I was NA. Probably would have made over 240hp with it on motor.

 

93egSLEEPER has been saying ultra STREET. I'll probably go that was since it seems to be the IM everybody is running now. I didn't think the longer runners/small plenum would work good for making power til 8500-9000rpms but it seems everybody likes it.

 

Ahh ok gotcha. I believe they're like a little under 2L plenum volume so with a spacer I could see it handled good power. I think mine with the spacer removed would have been a great manifold for my setup when it was NA. Basically shelf manifold except for some very subtle port/polish work basically just cleaning up the runners a bit.

 

HT member on here "Furyof4" had a thread with some testing in it I believe. I also was making and selling them. The spacers IMO should be required on built 2L motors. The displacement/compression on that manifold IMO makes it peak a little early. All in all its a good manifold. My 2L liked more plenum volume though.

 

Same here, my boosted 84.5x89 loves the setup she's breathing through now (3.5L+1L spacer) and I would have loved to see what this thing would have done for me on this setup when I was NA.

 

Got a bunch of stuff from UPS this week. rods, pistons, KS tuned front drag brake kit and staging brake kit. Their drag trailing arms and finishing line front brake line kit will be here over the next few days...

 

new goal...no HP numbers just dip into the 11s on motor.