Originally Posted by Rxmfn7 (Post 10339525)

^ The N/A 20B is honestly just something you have to want, all for illogical reasons. Dollar for dollar, you aren't going to even come close to the LSx engine for power output. Logan and others have made incredible progress lately on this front, but as we all know 450-500whp from even an LS1 is only a cam and heads upgrade away. As you said, the sound, feel and uniqueness of the 20B is what lures the few of us in, but in racing and to be financially sane, none of that really matters.

Originally Posted by GtoRx7. (Post 10339532)

$20k will just buy the LS7 katech engine. Are you looking to spend 20k on the engine only or the entire swap? I am sure you realize 20K will not get you close on a LS7 full swap. Not just any 20b n/a can go to 10k. There is a ton of mis-understanding in this area. The cost goes WAY up in price for a 20b that redlines at 8500 and one that can go to 10k. The price is so much higher due to these three factors- apex seals must be ceramic ($2000) New housings are needed instead of used ones for the ceramic seals ($1800) and finally a Drysump front cover/ system must be used to supply oil that high in rpm ($4000). But if you are looking to spend $20k on a engine, then the 20b n/a is way cheaper. Even one built to 10,000rpm spec just like mine. Oh, and its torque to the tire that matters, and how long that torque takes place. Horsepower and average power in the shift range is what wins. Anyone that doesn't believe that can ask themselves why in japan there is 300hp class and 500hp class. No mention of torque. Even in nasa they place you in classes based off hp/ weight. Not tq/weight. With that said, the LS7 is a fantastic engine. I say the only solution is to build both ;) and then give me a ride damn-it! lol

Originally Posted by Callsign_Vega (Post 10339848)

My $20-25k budget is engine only. Pretty much everything on the car is getting upgraded so the total will be much greater. I would be looking to go dry sump on either the n/a 20b or LS7 as I will be doing some track/auto-x duty.

I might have missed it in the thread, are you sticking with the stock 5-speed or upgrading to something stronger like a T-56? I am curious as to whether a T-56 could shift acceptably at such high RPM's.

Originally Posted by Callsign_Vega (Post 10339504)

While the rwhp of this killer n/a 20b posted here is nice, the rwtq is only about half of a good LS7 setup. Not to make this a versus thread, but it's a hard decision!

Originally Posted by Supercharged FC (Post 10339945)

Just wanted to say sweet job!

Two quick questions,

Where does this rank of the NA rotary HP score board?

Do you have any pictures of how the P-port manifold mounts to the engine/lower intake manifold?

Thanks!

Once the snow melts I will head down for a few pulls with my POS.

Originally Posted by Rxmfn7 (Post 10340376)

^Just to add to the above, I made the trip out today to defined autoworks and spoke to Logan about plans for my car, and he was nice enough to show me around and give me a ride in his 20B FD. I will say I'm very surprised at how well it pulled even at ~4-6krpm. Even without winding it out, it was still extrmely quick and responsive. The midrange is even better than I was anticipating. Also at WOT.. well lets just say I may have pee'd just a little. Sorry about the seat Logan ;) Haha. Seriously the car was impressive though.

Originally Posted by t-von (Post 10340382)

Logan how much does your track car weigh anyways?

Originally Posted by GtoRx7. (Post 10339910)

Yeah pretty much no synchro tranny will like life very long when taking 10k shifts all the time. T-56 will have a hard time over 8k. I am using a G-force t-5 transmission. Which is a straight cut gear, dog ring setup. 10k and clutchless shifting is a win/win :)
For roughly $15,000 we can build you a engine pretty much identical to mine. That includes the price of the JDM 20b as well.

Originally Posted by ghiaracer (Post 10340937)

My PP20B, Jeff Kiesels old 3 rotor- 390 RWHP- It apears that your hp keeps climbing past 8500 whereas mine flattens out after ~8000.

Ill find the spreadsheet and send it if you want.

Originally Posted by Callsign_Vega (Post 10341019)

I am not familiar with the T-5, I will have to do some research. Is it disturbingly loud with the straight cut gears? Do you street drive the car at all? I've read dog ring setups are a no-go on the street.

$15k sounds pretty good. This thread has definitely piqued my interest!

Originally Posted by GtoRx7. (Post 10341223)

Yes n/a is very sensitive to the exhaust design. The engine came from a mid-engine car correct? Which is why the header was so short?

Originally Posted by RX-Heven (Post 10341380)

Hey Logan,
Just a hypothetical, but what about those semi-p's with a turbo setup. Could you get the semi-p tb's opening under boost while staying closed in vacuum?

Originally Posted by Trots*88TII-AE* (Post 10341545)

If I'm not mistaken, his experience (at least with this N/A version) was that the peri-port gave better torque/power throughout the entire RPM range. I'm not sure whether the same would be true for turbo application or not, this concept has crossed my mind many times.

Originally Posted by RX-Heven (Post 10341369)

That engine came out of a Bugeye Sprite, but iirc, the exhaust was very short as it exited right after the front tire. That was a very nice setup...slide throttle etc.

Originally Posted by Ottoman (Post 10342679)

Another question occured to me..

with an ITB setup, do you still retain a IAC of sorts?

can you run ITB's and retain A/C and P/S for example...

is there a way for the ITB's to compensate for the load of the A/C coming on etc?

Originally Posted by Callsign_Vega (Post 10343725)

Could you clarify? Is it possible to run an air conditioner system with an engine such as yours? If not, that would be a serious pitfall for me since I live in a ridiculously hot place.

Originally Posted by EarlT (Post 10525803)

Keep a eye on our Website,

we will be offering "Kits"
that have the p-port manifold/ ITB's
already attached to stock lower manifolds,
and pre-made semi p-port Housings.

This will open up a whole new world
for turbo lovers and n/a guys alike

Where?
What WebSite?