Lets see your dyno at 14psi and then I will show you mine. And if you still are not satisfied, then you can talk. Otherwise, don't come in here talking **** on something that you can obviously see the power differences between the two engines.

Better yet, find me a 13b that made the power he did at 8 psi, and I wont ban you.

 

1. what was you power curve like?
2. what was your peak tork?

once you compare them you'll understand why all the work is worth it.

 

I'm sure you had pretty large ports while he has stock ports.

 

First I wasn't Talking ****!! Second what is up your ***!! I was asking why do the work if your not going to make the big #'s. Third I know I haven't been on the board as long as you but whose to say you know it all and that I don't!! I been racing my FD long enough to know that 400rwhp isn't that hard to make and keep reliable. So the point I was making or asking was is he going for the big##'s

 

First, I am grumpy today; so I apologize for that.

But, common sense would tell you that a 20b engine will make more power than a 13b engine. At nearly half the boost, he made just as much power as you did. And if you were to have read the thread, the third sentence in his original post, he clearly stated he had a problem with his boost controller and couldn't turn up the boost. Furthermore, his second post he also clearly stated he wanted to run it at 15 psi.

When I read your post, it struck me odd for all the information you seem to be inquiring on, is right in front of your face. Yet, you still brag about your own gains and insinuate that 403 rwhp is small power with a completely stock 20b engine at 8 psi of boost.

Because you have been racing your car long enough, you obviously know that that the stock 20b engine is very free flowing right? :smirk

If his engine would have had the very restrictive exhaust sleeves replaced, and engine porting; it would have netted much more.

For comparison purposes, post your dyno of your 425 rwhp at 14 psi. Also post your specs, and we will compare the dynos and see how they shape up against each other. Then, I will compare mine with yours to see how they compare to similar PSI (mine was at 13.6psi).

 

Sounds like a good idea!! I will post a little later with my mods. I have no way to post my dyno sheet up but I will try to find someone who can do it for me.

 

and I also should have read the whole thread!!

 

i just did a comparision on http://www.catenet.net/dyno.php
i think you should just throw in the towel because a 13b w/ 16 psi t66 has got 3-5hp on you across the whole curve. GIVE IT UP!!! JUNK THE CAR!!!

ok ,ok so the real reason i looked was in hopes of finding the ft/lbs graphed. no luck w/ that site but i bet the 13b hits its 300ft/lbs at 6500 like most do and not 4500

we wont talk about the 8psi vs 16psi part

 

Ok I know everyone has already taken a stab at you with the above quote, but you have to also realize that a 20b will be far less stressed than any 13b in this power level, therfore making it more reliable in the long run.

 

Well this was a nice civilized conversation until some people came in.

Anyways, thanks again 20B-3rotor. One last question, have you addressed the front sway bar issue yet?

Edit: One more question, what are you using for ignition coils/ignitors?

Great work so far!

 

I used the stock sway bar and made it work with some bending. The coils and ignitors I used are from a Z06 Corvette.

 

I run that page (not the whole catenet.net site) with the dynos on it, and I would like to have an option of torque curves, but I haven't gotten around to programming it yet.

Basically the way it works is that I have a database set up with horsepower vs rpm points and it uses GNUPlot to make a graph when you demand it. I could add a column to the DB and get the torque numbers there too... but originally I thought it would create too much clutter if you're trying to get all these crazy graphs on there

It's kinda on my to-do list. In the meantime, you can always calculate the torque from the graph.

B

 

Here's a neat comparison...

http://www.catenet.net/graph.php?car...1&SUBMIT=GRAPH

That's the 20B in this thread at 8 PSI vs my 13B at 14 PSI (single turbo and ported engine).

They are both very close the whole way through the rev range. So why do the work?

1 - His engine is barely breaking a sweat to spit out 400 rwhp; mine is working fairly hard.
2 - I've only got about 2-3 more PSI that I can run and I'm out of "pump gas" terrirtory. He can turn up at least 6 more PSI.
3 - My turbo is basically maxed out. If I want more power, I have to get a bigger one most likely.... That will hurt my low-midrange... oh yeah, and see #2 above. I'm sure his turbo will make more power around 14 PSI and still be on pump gas.
4 - It's fun to have a unique car!

I'm thinking very hard about doing a 20B myself... this winter maybe!?

 

WARGASM.... all hail!!!! awesome job and a great job getting and plotting the info.
dont sweat the ft/lbs it only matter when looking at 13b's and 20b's and 4rotors

 

Also don't forget that the drivability and torque advantage of a 20b is far superior to a 13b below 3.5k rpm's.

 

I noticed when Steve Kan was on the 3rd WOT pull that your Coolant over flow Tank was forcing out Coolant from It and that there was staining from hot Coolant along the Water Pump ( hot Coolant on clear coat = yellow staining). Did this pose a symptom to the dyno session or was this an unrelated matter that hindered the progress of cranking up the Boost?

 

I had too much coolant in the over flow. I dump some out and it was fine after that.

 

Any updates?

 

Everything is running great!!

I just got back from weighing my car. first scale 1320kg (2910lbs) second scale 1300kg (2866lbs).
With half a tank of gas.

 

Have you tuned for anything near 15psi boost or more? Looks like the 53-trim GT42 is a perfect match for a streetable 20B... Hmmmm

 

yeah any chance to run 1bar on that moster yet?

 

Just wondering if you ever got a price from your Dad about making the manifold for those of us who are interested? Mine is up and running fine right now minus some upper RPM tuning, but I"m already looking ahead to going single.

Your car is incredible, BTW. Great job!

Reese
20B 10AE

 

i was talkin with his dad and his dad said somewhere around 1500 canadian as the material alone cost 700 and the time it takes to make one..so i think thats a pretty good price..concidering it's ss and it's got great flow..

 

Sorry for takin so long. Junior (gotbanned?) is right my dad said something like $1500CDN. I have some more pics of how it looks in the car i will try and post it today.

 

thats a pretty good price concidering how well it's made....i feel thats a good price anyways..