The car was eg 2 door, the base motor was a bit smokey stock ITR, (maybe the oil ring has already wore , the valve relief on the piston was also already milled to accommodate a bigger cam), pnp and milled 0.7mm head, with custom header and “feels” ECU, i dont know how much whp it put, but it run 13,5sec on Toyo Proxes R888.. the skunk2 pro series was meant for the next 2.0L block, but i cant stand just waiting the block built , so we just slammed the cam on this stock itr motor with Toda valve springs on it.
i installed it just like DonF told me, intake vtec lobes on 98 deg, and exhaust on 104, but i found that the piston to exhaust valve clearence was only 3mm on overlap TDC, so i sacrifice a bit by advancing the exhaust to be 106 for gaining more exhaust valve to piston clearence.
since we dont have bigger injector to go with the cam upgrade, so i just put the twin 50mm weber carb, we run 42mm chookes, 190main jet , and 210 air jet. and using 93 octane gas.. the ignition was still controlled by the ECU, but the vtec actuator was from the Autometer tachometer shiftlight, since the ecu didn’t sent any voltage to the vtec solenoid (maybe because the map and tps was not used when I run the carb) with this tachometer shift light we can freely set up the vtec x-over rpm. So I put it on 6K.

after a complete 3 hours of break in, the motor ready to test, at the first drive we don’t want to rev it more than 8.2k.. because the rod bearing was new,. so I just plan to floor it from 4k only to 8.2k starting from the 2nd gear… when I floor it from 4k the vtec xover on 6k was smooth, maybe because the primary lobes was big enough, but the power feels doesn’t come until 7.5k,.. bellow 7.5k this motor only made a bit gain from the old setup according to my butt dyno… (maybe because this was stock ITR with only 11,8:1 CR). but when it was over 7.5k, the car pull just like an aeroplane going to “take off”!!, and the rev was very quick that suddenly goes to 9.2k… damn , I sliced it to the 3rd gear and the Toyo Proxes R888 given up, it spun and shaking everywhere.!! . and when the tach was touching the 8.2k , I slice it to the 4th gear , and yes it still spinning!..
btw the haltech afr gauge was showing that from 7k to 8.2k it was on the range of 12.0ish-12.7:1 AFR.. and thanks God the carb give us no flat spot or any missed fire.
Damn , I love this cams very much , few time before I’ve try a ITR motor with toda c camshaft but it doesn’t feel like the skunk pro2.

we got no more times to dyno tuned it for the more correct carb jetting tuning , On the 31 dec there will be a drag racing event, hope I could see some under 13sec time for this car, maybe we going to rev it to 9.2k-9.5k.. And on the early January we going to but the 2.0L block for this motor.

Merry X mast and happy new years… cheers

 

Thanks for sharing the knowledge. Looks like I will be going with the Skunk2 Pro 2 for my build to. Keep hearing good things about them.

 

I still think they are way too big for that setup , but I'm glad your happy with them..

People dont understand the the skunk Pro-1 cam is almost as big as the old stage 3's.. These pro cams are HUGE and alot of guys are overcamming their motors..

I know you love yo build them JT, so I'm not worried about your situation.
I'm sure you will be even happier once the 2.0 sits under them..

I have a guy who says he dynod 160 whp on a stock b16 with the pro-1's

 

thank tom, yes, the 1.8L was a short temporarry. since after 1 january , we'll going to tear it down to completed the 2.0L built.

 

46mm chokes 175 main 200 air. try that. more top better A/F ratio.
F-16 0r F-11 tubes

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by DonF &raquo;</TD></TR><TR><TD CLASS="quote">46mm chokes 175 main 200 air. try that. more top better A/F ratio.
F-16 0r F-11 tubes </TD></TR></TABLE>
don, is that based on your experience that youve try that ventury setup, or you did some math by calculating specific air speed passing the ventury according to specific rpm range? (no offense, just currious)

 

sounds like the cams are working for you. good luck with your build

 

I think the Pro 2+'s make decent numbers on my 11.7:1, 1846cc motor.

They may be designed for a larger motor, but they were cheaper than the regular S2S2's from my distributor, and the Pro 1's were out of stock from Justice Racing Engines.

So I went with the Pro2's, and couldn't be happier.

- Derek

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Tbone &raquo;</TD></TR><TR><TD CLASS="quote">People dont understand the the skunk Pro-1 cam is almost as big as the old stage 3's.. These pro cams are HUGE and alot of guys are overcamming their motors..
</TD></TR></TABLE>
yup plus the pro 1's got ol' primaries lol..
when more people start getting the pro series cams from skunk2, i think it's only a matter of time before we see "skunk2 pro 3 cams for my stock b16?" up in here.

 

JT, yes i have tried those on Honda motors.If you are worried about responce , try 44, 45mm chokes.The right air horn also makes a big differance.

 

JUST PUT some black sox over the air horns it creates a better harmonic
lol hi donF

 

Actually panty hose works better, but HOOKUPS already knew that.Saw the the pic's. Not user friendly.

 

we did the same thing for a friend of mines type r motor, we installed the pro2's in a stock 01 R with js header and intake and tunned em to +4 intake and -1exhaust. we made 192 whp at 8400 sae and 130 trq idles like **** thought took an hour to get it to idle we figuired it out though love those cams

 

so after reading this, u guys recommand the pro2s for a stock motor with just I/E/H and other little bolt on? I am still debating getting the pro1, pro2 or the BC spec3

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by DonF &raquo;</TD></TR><TR><TD CLASS="quote">JT, yes i have tried those on Honda motors.If you are worried about responce , try 44, 45mm chokes.The right air horn also makes a big differance.</TD></TR></TABLE>
thanks don, is that your motor was still 1.8L don?? btw youre talking about air horn lenght for the resonance tuning , am i right?? could you tell me the best lenght for valve to the end of air horn with your carbed motor??
thanks a lot

 

latest news, i try 46mm ventury chooke like don f suggested me... and i tuned the jet by increasing it almost to 215 size...
and it feel a lot more better than the 42mm chooke..
i hit the track at the week end
the best et was 13.3sec @ 171km/h on radial tyre (advan neova)

 

sounds good i've always wanted to try a carbed setup on a motor but it seems like it would be a pita to tune, i guess not. and it seems i know the right guy to talk to it about donf, it's crazy all the stuff he knows lol.

 

yeah at first i a bit not sure to run 46mm chooke, im affraid it will be too big and i will loose a lot of ventury signal... but it works...
it in the progress of 85x89mm 13.5:1 short block for this motor, hope it will alive in april

 

That's cool you love your Pro 2s. I just bought Pro 1s for my stock ITR and I hope I'll be as happy as you are.

 

JT or Don, what is the biggest choke (off the shelf) for the 50 DCO/sp Webers? Its probably 46, right? I run a 40mm in my 45 DCOEs and 40 is usually the biggest off the shelf choke for 45s, but Tperformance in CT sells 42mm chokes for 45mm DCOEs....

 

We actually used to machine our own chokes, used a diff inlet radius, and 2 or 3 angles on the backside, depending on size of OD and ID.
If they are 50 DCOE SP's they actually have the 55 bodie and lots of chokes are avail.
JT, you sound like you are running to big a main jet. The carbs atomize the air-fuel better and you should be looking above 13-1 AF. Maybe it is the big air-corrector. 2 air-corrector jet sizes= 1 main size.
Overall length from the valve, approx 350mm to air horn tip. peak at 9000 rpm. Longer lowers the peak, shorter raises it.

 

don , i dont have wideband o2 so i just reading plug, because when i use 200 main jet the plug was still white, im affraid it will go lean, im increasing it to 215 and the colour is getting better, and the Butt Dyno was tell that the WHP was increasing ...
yes maybe my air corrector was too big, it was 210..
yes Don, the overall length of my runner from the stack to the valve head was arround 360mm, that was close to 9000rpm... and i shift the motor @ 9200

d16dcoe45, i also made the chooke machined by my self.
yesterday when i run my car to the track, there was a D16 similar like yours (1700cc displacement) with custom 320 camshaft.. they using 45mm weber and 42mm chooke...
and that "Bastard D" beat my car (maybe they weight was very light), this D serries goes 12.9 @ 185km/h, while my car go 13.3.

 

The insulator should stay white, the color is in the bottom of the plug. I will IM you.

 

im sent don, thanks

 

damn bro... cant wait to see the skunk2 pro3 result aye...!

congrats j-sport