04-13-2015 | #1 |
Join Date: Nov 2014
Location: Brooklyn ny
Posts: 1,045
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ported plenum and injector housings..
Thinking of doing this mod to my 91....Just had headers cat back hurst shifter ,Haiback chip and intake temp sensor wire relocated to the front near the air filter done to the car..
Really liked the additional horsepower gains i picked up and of course the sound........I know a lot of members port the plenum and injector housings.......Is the horsepower gains throughout the rev range or more up on top? Im not to hung up on peak horsepower numbers,more impressed with seat of the pants feel.. Thanks.... |
04-13-2015 | #2 |
Join Date: Nov 2011
Location: Dunbarton NH
Posts: 7,486
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Re: ported plenum and injector housings..
I bought a set of injector housings and plenum from Locobob. HP went from 353 to 397 RWHP. I was pleased. Problem with seat of the pants was the winter. I parked the car with 353 hp, five months later I got to drive it with 397 hp, long delay to try to judge s.o.t.p.
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04-13-2015 | #3 |
Join Date: May 2013
Location: Chicago
Posts: 980
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Re: ported plenum and injector housings..
Efnfast what else is done to your car? 44rwhp from the plenum and injector housing is amazing!
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1993 ZR-1 #211 Yellow On Beige Beast #2 1992 ZR-1 #427 Black On Black *Sold* 1985 L98 Blue On Blue *Sold* |
04-13-2015 | #4 |
Join Date: Nov 2011
Location: Dunbarton NH
Posts: 7,486
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Re: ported plenum and injector housings..
injectors, coils and wires. But I don't attribute any of that to HP gains. Locobob did a trade with me. My car also has headers, exhaust, and a Marc H chip, but that stuff got me from 311 hp to 353. -Steve
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04-16-2015 | #5 | |
Join Date: Aug 2014
Location: Kansas City, MO
Posts: 838
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Re: ported plenum and injector housings..
Quote:
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Looking for a ZR-1 1985 Yamaha RZ350-NOT STOCK 1971 Yamaha AT1-Middle of a restoration |
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04-16-2015 | #6 |
Join Date: Apr 2015
Location: boise, id
Posts: 8
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Re: ported plenum and injector housings..
it is definitely worth doing.
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[SIGPIC][/SIGPIC]1991 #235 |
04-17-2015 | #7 | |
Join Date: Nov 2007
Location: Squires (near Ava MO in the Mark Twain N'tl Forest) - Missouri
Posts: 6,493
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Re: ported plenum and injector housings..
Quote:
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Good carz, good food, good friendz = the best of timez! 90 #1202 "FBI" top end ported & relieved Cam timing by "Pete the Greek" Sans secondaries Chip & dyno tuning by Haibeck Automotive SW headers, X-pipe, MF muffs Former Secretary, ZR-1 Net Registry |
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04-22-2015 | #8 |
Join Date: Jun 2014
Location: Pope AFB, N.C.
Posts: 5
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Re: ported plenum and injector housings..
How much does Locobob charge for the porting?
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04-22-2015 | #9 |
Join Date: Nov 2014
Location: Brooklyn ny
Posts: 1,045
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Re: ported plenum and injector housings..
700 for the porting....From what I understand is you send him 700.....He ports one, sends you the plenum when it's ready....Then you send him yours...
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04-22-2015 | #10 |
Join Date: Jan 2004
Location: Portland, OR
Posts: 1,057
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Re: ported plenum and injector housings..
Actually I charge $900 to do a customer supplied, $1500 for my core - $600 refunded with core return. I do these completely by hand - usually 60-70 hours of meticulous work.
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Robert ZR-1 Net Registry Oregon State Director 91 ZR-1 #431 Black/Black LPE 368 |
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