intake manifold vs stock port and polish
intake manifold vs stock port and polish
i wanted some people views on which one they think would be better an intake manifold with shorter runners or with longer ? im looking to get one for my 95 civic and dont know which one to get one is a custom intake manfold that looks like the obx intake manifold a picture is attached below and the other is a stock manifold which has a longer runners but is ported and polished by gude i dont have pictures of the gude yet but will put up later
yeh the 7th gen are plastic but im talking about a 95 civic which isnt plastic.
attached is a picture of the stock port and polished manifold which one do people think would be better for performance ?
attached is a picture of the stock port and polished manifold which one do people think would be better for performance ?
Joined: Jun 2002
Posts: 3,242
Likes: 0
From: so cal djmota=oscar
Rep Power: 324 
what are the mods on the 95 ...cam, head work ect??
if none then i would say go with the ported original.
If a cam, cam gear, throttle body headwork ect are in the near future than i would say go with the aftermarke intake. But i would not trust obx to make a good manifold, i am thinking more along the lines of skunk2 or something. oh yeah they do look different.... not much of a difference in runner length.
if none then i would say go with the ported original.
If a cam, cam gear, throttle body headwork ect are in the near future than i would say go with the aftermarke intake. But i would not trust obx to make a good manifold, i am thinking more along the lines of skunk2 or something. oh yeah they do look different.... not much of a difference in runner length.
Registered!!
iTrader: (8)
Joined: Mar 2003
Posts: 3,024
Likes: 1
From: Zulu Alpha Tango Foxtrot
Rep Power: 313 Some quick info about intake manifolds:
Shorter runners (OBX) will allow the manifold to flow better. That means better top end power. Longer runners allow for more lower end power, due to something called "port tuning."
If you have adjustable cams, or can adjust your timing in other ways, the OBX will work great. If your car is stock, than the PnP'ed stock manifold would probably be better. If you install an OBX withough doing anything else, you'll probably lose low end torque / power......
Shorter runners (OBX) will allow the manifold to flow better. That means better top end power. Longer runners allow for more lower end power, due to something called "port tuning."
If you have adjustable cams, or can adjust your timing in other ways, the OBX will work great. If your car is stock, than the PnP'ed stock manifold would probably be better. If you install an OBX withough doing anything else, you'll probably lose low end torque / power......
ok tell me what you think here is my setup can the obx give me good bottom and top power if i tune my car right ? more than the stock port and polished intake manifold ?
i have a 95 civic hatchback with a jdm d15b 1.5 sohc vtec with a d16y8 port and polish head zex cam, stage 2 clutch,cold air intake, header,exhaust,cam gear and mugen ecu vtec ((4700 rpm limit 10,000)) gonna add some a dual core radiator, a 7lb flywheel and high compression pistons next week i already have them. i might have to get a d16block for pistons to work to raise the compression to from 9.6 to 13.0
lowered with tanabe springs and tokico shocks, 4 stabilizer bars and 15n inch si rims
what should be my next mod? nitrous ? i know i cant run turbo on such high compression but how about a supercharger ?
i have a 95 civic hatchback with a jdm d15b 1.5 sohc vtec with a d16y8 port and polish head zex cam, stage 2 clutch,cold air intake, header,exhaust,cam gear and mugen ecu vtec ((4700 rpm limit 10,000)) gonna add some a dual core radiator, a 7lb flywheel and high compression pistons next week i already have them. i might have to get a d16block for pistons to work to raise the compression to from 9.6 to 13.0
lowered with tanabe springs and tokico shocks, 4 stabilizer bars and 15n inch si rims
what should be my next mod? nitrous ? i know i cant run turbo on such high compression but how about a supercharger ?
Originally posted by mclean987
ok tell me what you think here is my setup can the obx give me good bottom and top power if i tune my car right ? more than the stock port and polished intake manifold ?
i have a 95 civic hatchback with a jdm d15b 1.5 sohc vtec with a d16y8 port and polish head zex cam, stage 2 clutch,cold air intake, header,exhaust,cam gear and mugen ecu vtec ((4700 rpm limit 10,000)) gonna add some a dual core radiator, a 7lb flywheel and high compression pistons next week i already have them. i might have to get a d16block for pistons to work to raise the compression to from 9.6 to 13.0
lowered with tanabe springs and tokico shocks, 4 stabilizer bars and 15n inch si rims
what should be my next mod? nitrous ? i know i cant run turbo on such high compression but how about a supercharger ?
ok tell me what you think here is my setup can the obx give me good bottom and top power if i tune my car right ? more than the stock port and polished intake manifold ?
i have a 95 civic hatchback with a jdm d15b 1.5 sohc vtec with a d16y8 port and polish head zex cam, stage 2 clutch,cold air intake, header,exhaust,cam gear and mugen ecu vtec ((4700 rpm limit 10,000)) gonna add some a dual core radiator, a 7lb flywheel and high compression pistons next week i already have them. i might have to get a d16block for pistons to work to raise the compression to from 9.6 to 13.0
lowered with tanabe springs and tokico shocks, 4 stabilizer bars and 15n inch si rims
what should be my next mod? nitrous ? i know i cant run turbo on such high compression but how about a supercharger ?
so what should my next mod be ?
Originally posted by cambo
nitrous, turbo, and super are all forms of FI. i wouldnt run a supercharger on 13:1 compression.
nitrous, turbo, and super are all forms of FI. i wouldnt run a supercharger on 13:1 compression.
Originally posted by xblkcivicx
If you run it with real high octane fuel like race gas you might get a way with it...but your going to have to run serious fuel for 13.1 you can't run that on pump gas.
If you run it with real high octane fuel like race gas you might get a way with it...but your going to have to run serious fuel for 13.1 you can't run that on pump gas.
Registered!!
Joined: Oct 2002
Posts: 289
Likes: 0
From: Coventry, Rhode Island, US
Rep Power: 0 I don't have the conversion chart infront of me, but im pretty sure your going to need to runhigher octane than 93 even with the retarted ignition timing...Find a compression/octane calculator on the web, it will tell you all the conversions. Personally i think it will knock
Originally posted by xblkcivicx
I don't have the conversion chart infront of me, but im pretty sure your going to need to runhigher octane than 93 even with the retarted ignition timing...Find a compression/octane calculator on the web, it will tell you all the conversions. Personally i think it will knock
I don't have the conversion chart infront of me, but im pretty sure your going to need to runhigher octane than 93 even with the retarted ignition timing...Find a compression/octane calculator on the web, it will tell you all the conversions. Personally i think it will knock
Registered!!
Joined: Oct 2002
Posts: 289
Likes: 0
From: Coventry, Rhode Island, US
Rep Power: 0 If you run 13:1 compression with the proper FUEL (race gas, or methanol) with advanced timing then you will make more power. If you run 13:1 compression and RETARD your timing...your defeating the purpose, they cancel each other out it's going to run like *** and not have full potential. but you are right you will be able to run pump gas on it.
You want to run your ignition timing as advanced as you can before you rattle the motor....advance...advance..advance..and then when it rattles, bring it back a little bit untill it stops rattling. then you have perfect timing.
IF YOU RUN HIGH COMPRESSION YOU NEED TO RUN HIGH OCTANE!
That's all there is too it...
You want to run your ignition timing as advanced as you can before you rattle the motor....advance...advance..advance..and then when it rattles, bring it back a little bit untill it stops rattling. then you have perfect timing.
IF YOU RUN HIGH COMPRESSION YOU NEED TO RUN HIGH OCTANE!
That's all there is too it...
Thread
Thread Starter
Honda Civic Forum
Replies
Last Post
92hatchbackcx
Mechanical Problems/Vehicle Issues and Fix-it Forum
1
Jul 7, 2015 08:23 AM
BootyDo
Wheels, Tires & Brakes Modifications
2
Jul 7, 2015 06:06 AM
7thgensurvivor
Archive - Wanted Parts (WTB's)
2
Jul 5, 2015 12:17 PM
