Yet another GT42/Halfbridge...

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08-13-07, 02:32 AM

#51

RICE RACING

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That inlet manifold has an interesting effect on the tq curve given the boost is flat as you mentioned. Good numbers for the power its 58rwhp up on a T2 block street port running normal intake manifolds and a small TO4S turbo at same peak power revs on the same dyno type (pump fuel 100%, street 3" exhaust and air filter attached 473raxelhp @ same boost).

PS your fab is great, being a machinist myself can appreciate it

nice job for first up TIG too !

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08-13-07, 02:44 AM

#52

crispeed

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Quote:

Originally Posted by RICE RACING

That inlet manifold has an interesting effect on the tq curve given the boost is flat as you mentioned.

I've been noticing similar effects with the same type of intake manifold designs.
It's mainly due to the plenun.
The secret though is to keep carrying the power to much higher rpms to compliment the high torque peak.

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08-13-07, 04:35 PM

#53

KNONFS

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Quote:

Originally Posted by Trjackson

Here is a lil sumpin, sumpin.

http://www.youtube.com/watch?v=SLW7wyoamJ8

Ty

That's a bad *** setup

BTW - Nice numbers!

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08-13-07, 06:42 PM

#54

NOPR

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Quote:

Originally Posted by Asleep

Excellent results! The Dynapak reads lower that a Dynojet, correct?! Wow. Let me know when you're in town again and let's line them up!

Tony

P.S. Props to Trjackson on his vids/pics

it reads about 10% lower from what we've seen so far. I must say from what ive seen that both dynos are very consistent, just not with each other. My car made 12 more rwhp at rx7store with 2 less psi (from 360->372). another FD broke the 300whp mark on the rx7store dyno while it only made 280 or so on the defined dyno a few weeks earlier (the exact number escapes me).

nate, the car is nice. i need a ride in it when the alternator isnt being a ho.

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08-13-07, 11:13 PM

#55

dregg100

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was that all on stock ignition?

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08-14-07, 01:18 AM

#56

Trjackson

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Quote:

Originally Posted by Asleep

Excellent results! The Dynapak reads lower that a Dynojet, correct?! Wow. Let me know when you're in town again and let's line them up!

Tony

P.S. Props to Trjackson on his vids/pics

Tony, thanks for the kinds words.

Here is another vid of his car. The footage could be better, but delslow's car was throwing me around like a little bitch!

http://www.youtube.com/watch?v=DkG_XF-q1HI

Ty

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08-14-07, 01:30 AM

#57

GtoRx7

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Quote:

Originally Posted by dregg100

was that all on stock ignition?

Sadly, and surprisingly yes. I had my hands full to keep the tune just right to avoid any weak spark events. Nice vid though, glad to see it kicking butt!

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08-14-07, 10:20 AM

#58

dregg100

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that thing rips

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08-14-07, 01:16 PM

#59

dregg100

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what radius bends were used when you fabbed your manifold? would you be interested in making another one of those duel walbro setups for me by chance? pm me.

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08-14-07, 04:18 PM

#60

NOPR

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nice video ty, nate's car sounds super weird on it for some reason. like, a sound you'd hear on an atari. it sounds sweet in person though so who cares.

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08-14-07, 04:37 PM

#61

DelSlow

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Yea, it sounds completly different in person

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08-14-07, 08:29 PM

#62

Boostn7

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Awesome fabrication work !

Talent clearly shows... and nice numbers :-)

Just not clear on one thing...
Video states 398rwt ..... I believe it to be wrong since torque barely went past 300.
Strange how your torque is peaking exactly same rpm as horsepower, usually a clear indication of boost creep but with that custom intake things change.

What happened after 7600rpm?
horsepower curve took quite a drop.

Enjoy the new found horsepower:-)
JD

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08-15-07, 01:03 AM

#63

Trjackson

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Yeah, I filmed and edited the vid, It was a typo, I was so tired when I was editing, and I didn't catch till after I loaded it on youtube.

Ty

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08-16-07, 08:29 PM

#64

88rxn/a

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so wait a tic!!
stock coils and race gas and thats it!?!?!

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08-16-07, 09:51 PM

#65

DelSlow

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Yea... ummm... if you don't think your going to use that FC-3000, just let me know and I'll buy it back from you.

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08-16-07, 10:03 PM

#66

djseven

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I have a feeling I am just wasting time with my r85 setup and should go this route. Congrats on the numbers.

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08-17-07, 02:54 PM

#67

88rxn/a

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Quote:

Originally Posted by DelSlow

Yea... ummm... if you don't think your going to use that FC-3000, just let me know and I'll buy it back from you.

i thought i was gonna need it for the old HP #'s you had with the turbo i bought from you!?
let me think about it....i just might

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08-29-07, 02:08 PM

#68

shm21284

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Quote:

Originally Posted by DelSlow

T-von, I see what your saying now. I remember reading that thread quite some time ago and I've also read Maximum Boost several times. I agree with you that a "Y" split would provide maximum flow to the wastegate runner, but I felt that putting the wastegate runners on outside of the bend vs the side would disrupt flow in the main runner. I set up a ghetto rig with compressed air to test out the flow through it, and it felt like there was about 1/3 of the airflow coming out of the wastegate runner vs the main runner. When I blew air backwards(from the turbine side) it actually sucked air into the wastegate.

Guess I'll find out how it does this saturday when I get a pump gas tune done.

I agree. As I saw it in person, he had no boost control issues on either 12 lbs or 18 lbs.