12-20-2007 | #21 | |
Join Date: Dec 2005
Posts: 692
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Re: self porting any done this?
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Thanks Rick |
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12-21-2007 | #22 |
Join Date: Mar 2006
Location: Innsbrook, Missouri
Posts: 1,727
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Re: self porting any done this?
Brad,
I'm a little confused, which in reality is nothing new. I noticed in another post, you, posted some very very good ET time slips and stated that, Corey had ported and set up your car. along with dick gulstrand, tweaking your suspension. but now your asking for info, on porting your car. Do you have more than one zr1. ?? You also stated that you have been doing cam timing work.?? could you elaborate on that statement, for those of us, that are looking for a few extra ponies. i'm not trying to pee on your cornflakes here, but the numbers you have posted, are better, than many of the fully ported, chipped, headers, exhaust, and shifter dr. equiped cars. My car is stock other than, headers corsa, 410's , a pair of fuzzy dice, and my best ET at Bowling Green was 12.72.. what type of tire are you running?? maybe i weigh more than you... , |
12-21-2007 | #23 | |
Join Date: Jan 2007
Location: Florida
Posts: 241
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Re: self porting any done this?
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12-22-2007 | #24 | |
Join Date: Oct 2007
Location: lone pine and mammoth lakes ca.
Posts: 544
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Re: self porting any done this?
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12-23-2007 | #25 | |
Join Date: Dec 2005
Posts: 692
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Re: self porting any done this?
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12-23-2007 | #26 |
Join Date: Aug 2005
Location: San Fernando Valley, CA.
Posts: 896
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Re: self porting any done this?
Which car was the (Kellys?) burnt motor put in you got running last week, the red one?
__________________
1990 ZR1, 142,000 miles-Black on black 4.09's Haibeck chip, 3"exh, K&N, meth inj. |
12-24-2007 | #27 |
Join Date: Oct 2007
Location: lone pine and mammoth lakes ca.
Posts: 544
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Re: self porting any done this?
yup ,we put the marshmellow(her knickname for it ) in the red car . had to use theold inj all the electronics and wireing out of the red car plus water pump and alt ,air conditioner, plus replace the crank seal . and she thankfully purred like a kitten . now she wants the ported injector housings and plenum headers . my wife i think is a bigger car nut than me so i guess the work will never be done . but thats ok dont have to beg for cash for the cars , which is good by me.
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12-24-2007 | #28 |
Join Date: Jul 2005
Location: San Antonio, TX
Posts: 652
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Re: self porting any done this?
Yes, I've ported my plenum and injector housings... The first time I went into the plenum, I simply took out the casting marks and port matched the plenum to the IHs... My Z went from 318 RWHP to mid 340s on the porting alone - roughly 25 RWHP gain. After adding headers and adjusting the chip, I made 372 HWHP at SGC in 2004. After seeing a few other porting jobs from some of the known porting guys, I decided to go deeper and siameese the plenum and open up the IHs to 36mm. While I have not dynoed the Z since my last round of porting a few years ago, I believe I've gained quite a bit more RWHP, but at the expense of my mid-range torque. Looks great on paper in that I could never use all my mid-range torque with the 4:10 rear without spinning tires. Now I have a different "problem"... I don't spin tires very much in the mid RPM range, however the rear tires break loose in the upper RPM range.... so at 55mph, I lose traction. Seat of the pants, it is much faster in the upper RPMs, but I sure do miss the low/mid RPM torque. I may be able to work it more in the chip, but have not had time for it... Before you get started, you need to ask yourself what you want from your Z.... Believe there is some give and take with every mod. I've attached a few photos taken along the way.... I used my trusty die grinder, the bits in the photos, and my homemade 36mm porting ball... the red line around the ball was made with a red sharpe and left a mark exactly where I needed to grind to make a uniform 36mm port job.
Before I get flamed, I know there are much better porting jobs out there, and done by better experts than I, but I enjoy doing these projects.... May not be as good as others, but better than some I've seen... It's my Z and I take the time to it the best I can.... I hope these photos will help you decide what you want to do. |
12-24-2007 | #29 |
Join Date: Jul 2005
Location: San Antonio, TX
Posts: 652
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Re: self porting any done this?
Best Regards, Mark |
12-24-2007 | #30 | |
Join Date: Aug 2005
Location: San Fernando Valley, CA.
Posts: 896
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Re: self porting any done this?
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1990 ZR1, 142,000 miles-Black on black 4.09's Haibeck chip, 3"exh, K&N, meth inj. |
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