New Motor...Big Turbo...not faster!

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Nov 15, 2004 | 03:11 PM

#26

sk8world

Chasing numbers

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From: Alabama

Why would you skip Steve Kan? Want somebody cheaper? You get what you pay for!!

Nov 18, 2004 | 08:36 PM

#27

darkphantom

The king of the highway!

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From: Home of the 305 Boyz(miami)

Even Though That Turbo Might Have Too Much Lean I Would Of Gone With A Hks Or A Greddy Turbo. (from Experience)

Jan 1, 2005 | 10:33 PM

#28

MichaelB145

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www.mancavecolorado.com

Joined: Jun 2003

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From: Lakewood Colorado

Money has very little to do with it....Steve told me he wasn't making trips to tune anymore.

Jan 2, 2005 | 11:04 AM

#29

rfreeman27

Rotary Enthusiast

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From: MD

You need a bigger turbo!

Jan 2, 2005 | 07:22 PM

#30

MichaelB145

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www.mancavecolorado.com

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From: Lakewood Colorado

I don't think so...I have ran multiple 12.1's with a 1.70 60 ft w/ stock turbos. Now with a GT35/40 at same boost my mph is slower. I think its just tuning. The car should run a low 11.

Jan 5, 2005 | 12:06 AM

#31

Mr rx-7 tt

rotary sensei

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From: Virginia

Quote:

Originally Posted by MichaelB145

I ran high 11's/low 12's with a mild port and stock turbos. I blew the motor and had it rebuild with 3mm apex seals, kyro frozen, water jacket mod, clearance rotors from Atkins rotary and added the GT35/40 from A-spec tuning. My air to fuel is between about 11 to 1 and I am getting pretty high knock readings (95 on PFC and 60 on Datalogit). I have Greddy 2 row IC. On the stock turbos I was running about 15 pounds. On the new turbo/motor I also ran 15 pounds and it wasn't any faster. Shouldn't the bigger turbo be much more efficient at 15 pounds? I guess I can always turn up the boost but I would like to fix the problem if I have one. My idle is also pissing me off. I have no vacume leaks and the car idles back and forth from 500 to 2000 rpms. I don't think my port job would cause this. I was expecting to run into the 10's...please help.

Mike B

Check your compression...

Jan 5, 2005 | 09:39 AM

#32

Snook

Tony Stewart Killer.

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From: London

Quote:

Originally Posted by the_glass_man

In some cases a bigger turbo will make your car slower. You no longer have the low end grunt of the stock twins, which you traded for a turbo with more power potential. Tuning plays a big part but it could be a number of variables. I've seen stock turbo cars run 10's and 11's and single turbo cars run 14's and 15's at the track.

now that's just pathetic it's all driver fault there. With my stock twins car once I put the midpipe on I never got out of the 12s again at 12psi. With the single 11s half the time and 12.1 the other half (this was before the retune with a wimpy 380rwhp). I've seen what you're talking about though. people with stock twins and all the bolt ons getting 14s etc and 1 single turbo guy getting the same times cause he cant get any traction...bs some of my 11 runs are with a 2.1 60 time

Michael what kind of map are you running now!? I hope it's somewhat tuned since you're going to the track.

Jan 5, 2005 | 08:40 PM

#33

MichaelB145

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www.mancavecolorado.com

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From: Lakewood Colorado

I am running a map from XS Engineering from a similiar setup. I have a wideband so I knew it wasnt leaning out. It was dropping to about 11.0 to 1 A/F ratio...I know way too rich! Well, I guess I don't have to worry about it for a couple of months since we started painting the car. It doesn't look too fun since we are pulling the motor to paint the engine compartment.

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