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| how to make a stock 4 cyl fiero fast (Page 11/20) |
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RWDPLZ
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JAN 21, 09:29 PM
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SO HAVE WE FIGURED IT OUT YET? Sorry if I offend anybody, but I got sick of wading through the BS back on page two. Do we know yet what modifications can be made to the duke to make more power? What parts to use? Where to get these parts? How much they cost? or what potential gains can be made by adding specific parts?
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ditch
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JAN 21, 09:30 PM
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| quote | | Originally posted by 88_Fiero_2M4: I wish you would not defile my Pictures I post. Do it again and you will find yourself in a Court with a Copyright Lawsuit. I took the picture and didnt give you premission to use it. |
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I've been following this thing from the beginning....it's just too hilarious.
Copyright lawsuit? What are you smokin? Guess I'll repeat what everyone is getting at...read this VERY slowly....BACK UP YOUR CLAIM OR SHUT THE HELL UP. It's as simple as that. If I came on here and told everyone I got 300 HP out of one of my 2.8's with a few mods, I'd have people requesting proof to no end. If I didn't have one shed of proof (as you have shown), that would make me one thing....totally full of **** . talk is cheap
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Slammed Fiero
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JAN 21, 09:52 PM
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| quote | | Originally posted by 88_Fiero_2M4: I wish you would not defile my Pictures I post. Do it again and you will find yourself in a Court with a Copyright Lawsuit. I took the picture and didnt give you premission to use it. |
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Dude your just  Sue me fatass sue me!!!! I didn't know you could copywrite fat and ugly.. I guess you cornered the market!! JM [This message has been edited by Slammed Fiero (edited 01-21-2004).]
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chester
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JAN 22, 07:18 AM
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| quote | | Originally posted by 88_Fiero_2M4: I wish you would not defile my Pictures I post. Do it again and you will find yourself in a Court with a Copyright Lawsuit. I took the picture and didnt give you premission to use it. |
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Wow, this is getting funny, you and yello86se should get along just fine. Oh, and I missed the copyright logo...  What a joke.
Rob D. ------------------
 The Dirty Rat
Chopped, dropped and just plain NASTY!
383 Stroker MPFI with N2O
2.5" Drop
11" Brakes
17" Revolutions
RCC Coilover Suspension
Updated Jan 21 '04 www.dirtyratracing.org
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befarrer
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JAN 22, 01:35 PM
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| quote | | Originally posted by RWDPLZ: SO HAVE WE FIGURED IT OUT YET? Sorry if I offend anybody, but I got sick of wading through the BS back on page two. Do we know yet what modifications can be made to the duke to make more power? What parts to use? Where to get these parts? How much they cost? or what potential gains can be made by adding specific parts? |
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From what information I have gathered, I would think that the main 2 items that brings the dukes power down is the poor head flow and design, and a weak crank that cant rev too high. A stock duke makes 92HP at the crank, I did some 1/4 mile runs last fall with my 84 2M4 Auto, and my best time was 18.63 @70.1MPH, my best 60" was 2.5, not great, but if I were at sea level and perfect conditions, that would give me 89RWHP, which is around 100crankHP. That day was about 15ºC and had a 10-15MPH headwind at the track, plus an elevation of about 1600-1800feet, I had a full tank of gas (went 8 miles since I filled it up), spare, jack, 2 helmits, all interior panels, everything, plus some of my stuff, my car was just over 2700lbs. The bottom end of my engine (including rings) has never been apart and has an estimated 120000Miles (I have a recall block), my transmission has 151000Miles on it, so I expect an extra 5-10HP this spring with new rings and all the crud cleaned out of the bottom end. All I did was remove the cat, and portmatch and polish the head, that gave me about a 10% increase in power. I can scan the timeslip if anybody wants it.
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FastIndyFiero
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JAN 22, 03:27 PM
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Here's a little list I made a couple months ago. It'll build ya up a nice little 4 cyl...code:
Item GM Part No. Price, GM parts Direct Status
(unless noted)
HD Distributor # 10037373 $297.30 [x]
SD Head # 10045437 [ ]
Stock Head # 10022373 [x]
SD Valve Cover # 10031327 $97.95 (Summit) [ ]SD Intake # 10034870 $298.00(Flatlander) [x]
Brodix SD Head # 10038433 $339.47 [x]
SD Intake Valve # 10031339 $74.98 [ ]
SD Exhaust Valve # 10031325 $71.76 [ ]
SD Intake Gasket # FPP-12381 $19.69 (Summit) [ ]
# 12371032
SD Exhaust Gasket # FPP-1441 $20.99 (Summit) [ ]
SD Head Gasket # 10038952 $30.49 [ ] SD Valve Springs (350) # 3911068 $38.91 [ ]
SD Rocker Arms # 5723551 $70.18 [ ]
SD Rocker Studs # 3921912 $28.15 [ ] SD Block # 10027633 $$$$$$
SD Crank # 10027779
Nate Engel [This message has been edited by FastIndyFiero (edited 01-22-2004).]
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Oreif
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JAN 22, 06:33 PM
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| quote | | Originally posted by FastIndyFiero: Here's a little list I made a couple months ago. It'll build ya up a nice little 4 cyl... code:
Item GM Part No. Price, GM parts Direct Status
(unless noted)
HD Distributor # 10037373 $297.30 [x]
SD Head # 10045437 [ ]
Stock Head # 10022373 [x]
SD Valve Cover # 10031327 $97.95 (Summit) [ ]SD Intake # 10034870 $298.00(Flatlander) [x]
Brodix SD Head # 10038433 $339.47 [x]
SD Intake Valve # 10031339 $74.98 [ ]
SD Exhaust Valve # 10031325 $71.76 [ ]
SD Intake Gasket # FPP-12381 $19.69 (Summit) [ ]
# 12371032
SD Exhaust Gasket # FPP-1441 $20.99 (Summit) [ ]
SD Head Gasket # 10038952 $30.49 [ ] SD Valve Springs (350) # 3911068 $38.91 [ ]
SD Rocker Arms # 5723551 $70.18 [ ]
SD Rocker Studs # 3921912 $28.15 [ ] SD Block # 10027633 $$$$$$
SD Crank # 10027779
Nate Engel |
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Here is the new list:  http://www.kansasracingproducts.com/pricelist.html For $12,500 you can get an ARCA approved 2.6L SD4 generating 290HP@8500rpm.
This is a normally aspirated SD4 with a 500cfm 4-bbl carb.
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RWDPLZ
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JAN 22, 08:12 PM
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What about the 'Duke performance parts from the Fiero Store? 84-86 4CYL 8mm SPLITFIRE WIRE SET - $40 84-86 HOLLEY BIG BORE THROTTLE BODY W/ SENSORS - $330 84-88 4CYL OCELOT PERFORMANCE EXHAUST W/ TIPS - $270 84-88 4CYL PERFORMANCE EXHAUST MANIFOLD - $220 Total - $760 How much should it cost someone to portmatch and polish the head? Roller rockers? And is there a stronger crankshaft you can swap in? I think it would be interseting to build a duke that can keep up with the stock 2.8.
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Oreif
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JAN 22, 08:19 PM
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| quote | | Originally posted by RWDPLZ: What about the 'Duke performance parts from the Fiero Store? 84-86 4CYL 8mm SPLITFIRE WIRE SET - $40 84-86 HOLLEY BIG BORE THROTTLE BODY W/ SENSORS - $330 84-88 4CYL OCELOT PERFORMANCE EXHAUST W/ TIPS - $270 84-88 4CYL PERFORMANCE EXHAUST MANIFOLD - $220 Total - $760 How much should it cost someone to portmatch and polish the head? Roller rockers? And is there a stronger crankshaft you can swap in? I think it would be interseting to build a duke that can keep up with the stock 2.8. |
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The Ocelot is not better than the stock system. It's just a different sounding exhaust. There is no performance gain from it. The Borla would be a better choice. If using the above plus a decent performance cam you could get to about 120hp.
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88_Fiero_2M4
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JAN 22, 09:03 PM
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Those were some of the things that I mentioned but was told that it wouldnt work. that i would only see about 100 Hp. When I have the cash we will see what it will do but till then I have no more to say. I will just do it and let what I do speak for itself. I was never intending this to go so far out of hand but some people just have to take everything as a grain of salt and most dont. Sure I personaly dont know much about tunning engines and I have never clamed that I personal have the knolege, but I have friends willing to help out on the mods and after this summer is done and I have my other Fiero Running again I will post what I have done and the resoults.
But before I get flamed even more I will not say anything else to this matter.------------------
Don Pottorff
Red 88 2M4
Silver 86 2M4
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