engine ideas
ok so im thinking of some ideas on what to do to get my engine to around 200hp. im staying n/a and i want to keep it a daily driver.
now i want to raise the compression to about 9.5/1. i was wondering witch would be a better way to do it, oversize the pistons or to deck the head. my other question is on my head can you clean out the exhaust ports to get rid of the round tube thats in there. thanks |
Shady is runnin ~200hp on his L28 n/a... he built that thing like a rock.
< gets out intraweb p.a. > SHADY!!! Tune in to this thread.... Basics: Lots of head work (decking, valves, porting) Mild cam Header w/ 2.5" exhaust 60mm throttle body & turbo with n/a guts AFM Upgraded ignition |
ya that is basicly what i was looking into doin. so if i leave the bottom end alone and just work on top end 200 would not be hard to do, just time and money
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wouldnt he need to port/polish the intake manny and bigger injectors? (unless those were a given)
EDIT: nm he's only going for 200 and the comp increase should about cover that... (up your goals :) ) |
Originally Posted by 280zx2by2
(Post 254356)
wouldnt he need to port/polish the intake manny and bigger injectors? (unless those were a given)
Originally Posted by NismoPick
(Post 254352)
Lots of head work (decking, valves, porting)
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Originally Posted by NismoPick
(Post 254357)
polishing an intake is overkill. You want the air to flow unrestricted, but a slight agitation of incoming air actually helps the air / fuel mix.
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i would up my goal but i dont feel like putting that much money into the stock n/a set-up. rb25 will be going in once i get a good paying job and have time to build that up.
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Z31 NA ECU :) +12 hp
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what exactly does that ecu change?
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Yeah Bleachie... dig y0self 0utta dis 0ne! :D
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He put 12hp stickers on it
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for the love of god, ditch the early 70's EFI crap and atleast get mid 80's EFI crap!!!!
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Originally Posted by scorpionp54
(Post 254366)
what exactly does that ecu change?
Plus once that is in place you get basic "codes" from the ECU if there are issues. Its not an amazing fuel management system but much better than the ECU used from 1975-83. (plus its cheap to buy the parts) 1988-89 Z31 even has 2-bank injector firing! High tech! :icon_pidu: 1984-87 are super common in the wrecking yards too. This Just in! I just got a tip from NismoPick that a 240Z ECU also adds 12hp. I'm still trying to find one though. I guess they are super rare... :) |
i will definetly look into doin that.
so here is what i am planing to do mild cam swap, port polish head, raise compression, z31 ecu swap,(and everything else that goes with it) 60 mm tb, 5 speed tranny swap, upgraded fuel rail, headers, 2.25 exhaust, remove a/c system then back to what i asked first to raise the compression is it better to just deck the head or oversized pistons |
Originally Posted by scorpionp54
(Post 254460)
then back to what i asked first to raise the compression is it better to just deck the head or oversized pistons
I say... Plug it in, plug it in :D http://www.ozdat.com/ozdatonline/enginedesign/ http://www.atlanticz.ca/zclub/techti...der/index.html http://www.zonc.org/TechnicalInforma...binations.html |
Originally Posted by Bleach
(Post 254442)
This Just in!
I just got a tip from NismoPick that a 240Z ECU also adds 12hp. I'm still trying to find one though. I guess they are super rare... :) |
i guess better as in a more reliable setup,
now after loking at those links im thinking more into an oversized piston, i looked at the msa pistons, but they showed they dont show any in stock. where else would i get them? |
Nissan... or your local machine shop.
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ok thanks. i'll look around at the machine shops in my area thanks for the help.
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