GroundZero Motorsports GT42R - 668 RWHP

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Dec 10, 2005 | 05:55 PM

#76

ErnieT

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From: Abingdon, Md

Quote:

Originally Posted by Lukus

So it is possible to have too much power!

In a word...............NNNNNNEEEVVVVVEERRRRRRR!!!!!!

Dec 10, 2005 | 06:14 PM

#77

z8cw

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From: Colorado

Never.......

Dec 10, 2005 | 06:25 PM

#78

Lukus

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From: Sydney, Australia

Quote:

Originally Posted by ErnieT

In a word...............NNNNNNEEEVVVVVEERRRRRRR!!!!!!

Well, maybe in a 3rd Gen with some big sticky rubber under the back! But in my 1st Gen, i'll be lucky to get 400rwhp to the ground! Slicks will be needed on the track to make sure i go forward and not just sideways!

Dec 10, 2005 | 10:07 PM

#79

GUITARJUNKIE28

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From: so. cal

Quote:

Originally Posted by Lukus

So it is possible to have too much power!

no, just too little traction.

Dec 11, 2005 | 02:08 AM

#80

Xcessive

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From: aloha,OR.Usa

Next thing , on board VHT!!!!!!!!!!

Dec 11, 2005 | 02:34 AM

#81

Lukus

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From: Sydney, Australia

Quote:

Originally Posted by Xcessive

Next thing , on board VHT!!!!!!!!!!

You reckon spray VHT out from under the front bar as you're going along to get the extra traction huh?

Dec 11, 2005 | 02:24 PM

#82

Boostn7

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From: Union, NJ

Quote:

Originally Posted by z8cw

Sweet,
Looks like the car is still pulling hard when you shut it of. With max tq at 7000 rpm there is still more HP to be had but you probably don't want to rev much higher. Congrats on the port job, you don't see many motors with a TQ curve like this.

CW

In this case the turbo and possibly the manifold has everythinh to do with that torque curve...not engine ports. If Ralph were to install a "normal" size turbo :-)curves would change completely....powerband would come on much earlier.

Hey Ralph, did yo trying dynoing past 8krpm???
I bet there's some more there......

Congrats on the crazy numbers.....you gonna need to re-learn onhow to drive a car with that power !!!:-)

Dec 11, 2005 | 03:57 PM

#83

GUITARJUNKIE28

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From: so. cal

with the power coming in that late, have you guys thought about using a shorter manifold and trying to get it to spin faster to try to broaden the powerband out? wouldn't help anything in the low end but might give some more usable rpm's to work with up top?

great work reguardless.

what kind of porting and internal work has been done to the motor?

Dec 11, 2005 | 04:44 PM

#84

ErnieT

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From: Abingdon, Md

Actally the longer the runners are, the more it helps spool and low end torque.

Dec 11, 2005 | 05:01 PM

#85

GUITARJUNKIE28

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From: so. cal

i know, but it can help extend the rpm range

Dec 11, 2005 | 05:30 PM

#86

ErnieT

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From: Abingdon, Md

Quote:

Originally Posted by GUITARJUNKIE28

i know, but it can help extend the rpm range

A good port job will do that.

Dec 11, 2005 | 05:45 PM

#87

saltyslug

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From: Oregon

hey gzero nice setup. do you guys work on carbed turbo setups? just curious. I gotta come check out your shop.

Dec 11, 2005 | 08:07 PM

#88

GUITARJUNKIE28

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From: so. cal

Quote:

Originally Posted by ErnieT

A good port job will do that.

brap brap brap!

Dec 12, 2005 | 09:03 AM

#89

RX794

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From: Long Island, NY

Quote:

Originally Posted by ErnieT

A good port job will do that.

Porting becomes useless once you're running high boost levels.

Dec 12, 2005 | 01:26 PM

#90

GUITARJUNKIE28

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From: so. cal

so a stock port motor @ 30psi is going to produce the same hp as a bridgeport @ 30psi? i don't think so.

Dec 12, 2005 | 04:40 PM

#91

T04Eneedy

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From: nw houston,TX or w. hollywood,CA

its lookin like 30psi is the new 19psi.lol

finally,it looks like there are more and more people steping up and going 25+psi.

Dec 12, 2005 | 06:04 PM

#92

ErnieT

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From: Abingdon, Md

Quote:

Originally Posted by RX794

Porting becomes useless once you're running high boost levels.

Don't know where you got that info, but your dead wrong. Hell, Im proof of that.

Dec 12, 2005 | 07:10 PM

#93

pp13bnos

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From: Oregon

Last I heard, the motor was a Pineapple Racing engine. When I dyno'd last with my GZ LIM with a stock port engine, I too made peak rwft lbs at 7k rpms. CJ

Dec 12, 2005 | 07:33 PM

#94

onefastrx7

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From: TX

Quote:

Originally Posted by RX794

Porting becomes useless once you're running high boost levels.

Power can be defined as air in/air out. You might be able to flow 30psi on stock ports and a GT35R, but try pushing 30psi with a GT60 Garrett... Dont get me wrong, it will still flow, but how well?

That is why I have my RE cosmo fully bridge ported for the GT4788...

Dec 12, 2005 | 07:35 PM

#95

onefastrx7

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From: TX

Quote:

Originally Posted by T04Eneedy

its lookin like 30psi is the new 19psi.lol

finally,it looks like there are more and more people steping up and going 25+psi.

lol, about time...
I want to see a 20B with 40psi and a GT4788 turbo.

Dec 12, 2005 | 09:43 PM

#96

LUPE

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From: Belleville, IL

Quote:

Originally Posted by T04Eneedy

its lookin like 30psi is the new 19psi.lol

finally,it looks like there are more and more people steping up and going 25+psi.

Yeah, I'm going to be maxing out my HKS T51R KAI in february when Kan comes to tune it.

I doubt it will make it but I'd like to shoot for 35psi.

Dec 13, 2005 | 01:39 AM

#97

onefastrx7

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From: TX

Quote:

Originally Posted by LUPE

Yeah, I'm going to be maxing out my HKS T51R KAI in february when Kan comes to tune it.

I doubt it will make it but I'd like to shoot for 35psi.

I just talked to Masaki at Apexi USA, and he is sending an AEM 5bar map sensor to Japan for testing. so hopefully next month we will have a good calibration for the AEM 5bar map sensor.

Dec 13, 2005 | 08:05 AM

#98

LUPE

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From: Belleville, IL

Quote:

Originally Posted by onefastrx7

I just talked to Masaki at Apexi USA, and he is sending an AEM 5bar map sensor to Japan for testing. so hopefully next month we will have a good calibration for the AEM 5bar map sensor.

I already have a 4 bar that's calibrated.

Dec 13, 2005 | 10:03 AM

#99

enzo250

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From: NY

Quote:

Originally Posted by onefastrx7

Porting(hopefully someone who knows what there doing) will allow more cfm.
More air will equal more power, especially at high boost! This is basic physics.

BTW i wasnt' aware garrett made a GT4788? Where are you getting this from?
Is it someone else selling it with a different name, because its not a true garrett if it's labeled GT4788.

They make two different GT47's, 4708 and 4718.
Also what kind of power are u trying to make?