Some of you may know that I'm running a 35 right now in my S13. I've been doing this all summer with 30 timing components, cams and USIM. For this fall I decided to go to the dyno to help me decide how far I need to take power levels this winter. I'm already nearly satisfied with the quickness of the car as is but as the dyno proves this is largely due to the extreme lightweight of the thing. So, I thought I'd post this up to give everyone a heads up that getting a 35 longblock up and running temporarily on 30 stuff is totally feasible if you haven't the abilities, time, etc to do all the 35 stuff correctly.

 

Would be nice if the scale was a little friendlier (higher resolution). You still @ 2060 w/o driver?

 

Yeah, sorry. Cardomain won't host it any larger. Key notes are peak TQ was 202. HP is of course 181 but I found it interesting that it happened at ~5200. Is this pointing to the fact that the manifold is choking it out before the cams? Also, for some reason A/F was fairly fat at 12.5 for most of the pulls. Dropping FP didn't raise A/F. I can't understand why TQ and HP would cross at 4700 rather than 5200. Anyone? I forgot about that until just now. I'm gonna swing by the shop soon. Its a dynodynamics BTW which reads significantly lower than a Dynojet/Mustang Dyno.

I haven't weighted it this summer but I was thinking it'd be only a hair lighter if not the same.

 

What RPM?
USDM IM, seems logical and constant when compared to past dynos. I realize that no one has really ever gone this route.

That's my guess. Got any other data?

Because the scale is not the same on both Y axes.

hmm, I've seen A32's put down about 170 w/ BO's on those.
Jesus, that's the kicker right there.

 

USIM? Are you running 3.0 heads?

 

Gotta love how the shop labeled the runs as VG 240sx...

 

Peak TQ was at 4200'ish.

Definitely nobody down this road before. Thats why I'm not sure which Z33 IM option to go with. No real data on my part. Just kinda intuition.

Different scales! Makes sense.

What are BO's?


Well theres that and then the super short gearing.

Tatanko, the heads are 35 and LIM is 30. The ports are mismatched as hell and probably causing a huge flow hindrance.

Yeah, dude labels it vg even though he knows me fairly well.

 

why did you use 3.0 LIM and USIM on 3.5 heads

 

Nice man. Was expecting higher till i read your only using the 3.5 long block only. I am also wondering why you used the 3.0 LIM and USIM with the 3.5 heads? Would it not have been easier to do 3.5 LIM + 3.5 IM?

Must be a reason perhaps i missed it.

Nice swap though, and damn 2060lbs!!!

 

He's only running the 3.0 LIM/IM temporarally guys.

 

Ok, so what are the future plans?

 

Yeap, Nismo's got it. Its a temp setup. The 35 I got was a FWD version and there was no way I could use the FWD 35 IM. I wasn't able to get all the Z33 IM stuff at that time so I just ran the 30 stuff to tool around on some backroads a bit. If the Cosworth stuff would ever become officially available that'd be what I'd get but they won't release the d@mn thing.

Anybody got an idea why it'd be running at 12.5/1? Injectors and MAF are both A32 so what's the deal? I played with the FP dropping it all the way to 29PSI idle and the A/F only leaned out slightly. WTF?

 

BBMAF/CVTC remap/Equal length headers/Semi aggressive cams/ARP RB's/7500 rev limit.

 

 

@ using A32 software/hardware. Sue me,

 

AHhh i see. See i didnt know about the hood clearence thing. Makes sense, and i guess for the guys who want to do a bare bones setup or just to get the car up and running asap this would be good to know.

Have you thought about the pathfinder R50 IM? Not sure if that would work in your case, and i believe the Z33 IM is better in terms of top end power, but i really dont know. The pathfinder IM is pretty good design, super long runners for low-mid range, and the short runners for top end it almost dumps it straight into the LIM. I think someone did it around here and the results were pretty good.

 

Don't you think it would have been easier to go with the more common SR20DET swap for that kinda power?

My bro has a 91 240sx w/ sr20det stock motor, basic bolt ons and run dyno'd 190 hp w/ only 12 psi.

But then again, the torque curve is nothing like what you got there..... and everybody has an SR20DET swap.... And the SR is TURBO'd while you're still NA with that power.... and you'll most likely kill an SR20 powered 240 running on their stock turbo......

So.... I guess I kinda answered my own question.... CAN"T WAIT TO SEE WHAT ELSE YOU HAVE IN STORE>

 

Like whoa, 3.0 cams and usim?

What's wrong with cruising down backroads with no hood? Or was it that the 3.5 tb location wouldn't clear other 'stuff'?

 

Broan,
Thanks for the dyno, it's very helpful! If you are interested I can hook you up with a 350z complete intake manifold (all 3 pieces)for a reasonable price. PM from my site if you're interested as I don't visit here very often lately.

I'd looooooooooove to see a follow up dyno with the Z intake manifold (and no other changes)! I bet the increase would be substantial.

Then I'd looooooooove to see what some long tube headers w/ a nice merge collector and megaphones would do

Thanks,
Fred

 

Ah I totally forgot about hood clearance issues. How much further does the FWD 3.5 intake manifold stick up than the 3.0 IM?

You're going to gain huge power when you swap intake manifolds, it's hard to imagine the massive power loss you're experiencing with ports that are so ill-matched.

 

Wow lots to respond to guys.

Pathy IM won't work due to hood clearance. I've definitely thought about doing that before but quickly nixed that.

Actually KZZR, I don't have a hood on it anyway.

Neal, 35 IM sticks up a ton further than the USIM. That said the USIM still won't clear the hood either. I just didn't wanna screw with the FF IM when I knew it would ultimately be a Z33 piece.

Thanks Fred. I'll be dropping you a line in the coming months about that. It would be interesting to see the gain from just the IM. I'll think about doing that.

 

well itll deffinatlly be a fun car once you have it all done. Ive seen tilleys s13 3.5 turbo untuned run 11.2x at the track. Good luck with everything!

 

You would get a whole lot more power with 2000 VI and intake cam timing mod. Just have it open a bit longer.

I'm making a custom manifold mod myself. I'm not cutting any firewall nor hood.

 

He'd make even more with all the 3.5 components.

 

Using all VQ35DE components would mean a whole lot more wiring and electronics. The only advantage would be having variable intake cam for low end torque with high end horsepower. I'm not messing with all that stuff myself.

 

I smell old thread