Go Back   6th Gen Accord DIY and Performance Forums > The Garage > Engine & Transmission Mods

Engine & Transmission Mods Swaps, Turbo, Nitrous, bolt-ons, it all goes here

Register to remove these ads


Reply
 
Thread Tools Search this Thread
  #41  
Old 10-16-2007, 11:56 AM
Roadrage's Avatar
Roadrage Roadrage is offline
Senior Member
Points: 11,903, Level: 32 Points: 11,903, Level: 32 Points: 11,903, Level: 32
Activity: 0% Activity: 0% Activity: 0%
 
Join Date: Jan 2007
Location: POPE AFB/ FT. BRAGG
Age: 39
Posts: 916
Rep Power: 48
Roadrage is an unknown quantity at this point
Re: Engine Theory, Build, Etc Discussion.

Okay well thanks greg
__________________
Tomorrow is never promised to anyone.
HID CLUB #203
Reply With Quote
  #42  
Old 10-16-2007, 12:18 PM
WhiteAccord WhiteAccord is offline
Banned
Points: 6,440, Level: 23 Points: 6,440, Level: 23 Points: 6,440, Level: 23
Activity: 0% Activity: 0% Activity: 0%
 
Join Date: Mar 2006
Age: 29
Posts: 998
Rep Power: 0
WhiteAccord is an unknown quantity at this point
Re: Engine Theory, Build, Etc Discussion.

OK OK my turn....

So I have K20 pistons and rods...And I got the compression ratio of 9:5:1...

Ok added... GT3*R....at about 17psi.... or so...

Is there any harm here?

Last edited by WhiteAccord; 10-16-2007 at 12:29 PM.
Reply With Quote
  #43  
Old 10-16-2007, 01:08 PM
pyaarawala's Avatar
pyaarawala pyaarawala is offline
Senior Member
Points: 22,249, Level: 45 Points: 22,249, Level: 45 Points: 22,249, Level: 45
Activity: 0% Activity: 0% Activity: 0%
 
Join Date: Jul 2007
Location: long island, NY
Posts: 4,087
Rep Power: 49
pyaarawala is somewhat reliable
Send a message via AIM to pyaarawala Send a message via MSN to pyaarawala
Re: Engine Theory, Build, Etc Discussion.

Originally Posted by xci.ed6 View Post
you mean, xx.xx : 1

higher number = higher compression, higher cylinder pressure before ignition
lower number = opposite

ex: 6.0:1 the volume of the combustion chamber at BDC is 6x the volume at TDC, etc...
What do BDC and TDC stand for? So in our i4 cars, the volume of the combustion chamber at BDC is 9x the volume of the combusion chamber at TDC?
__________________
1998 Honda Accord EX 4cyl AT

Retrofit Club Member #14
White coupes ftmfw
Reply With Quote
  #44  
Old 10-16-2007, 01:30 PM
BadgerType's Avatar
BadgerType BadgerType is offline
Resident ***hole
Points: 62,322, Level: 77 Points: 62,322, Level: 77 Points: 62,322, Level: 77
Activity: 0% Activity: 0% Activity: 0%
 
Join Date: Dec 2005
Location: SW FLA
Age: 31
Posts: 9,020
Rep Power: 115
BadgerType has their shit togetherBadgerType has their shit togetherBadgerType has their shit togetherBadgerType has their shit together
Member Photo Albums
Re: Engine Theory, Build, Etc Discussion.

Originally Posted by pyaarawala View Post
What do BDC and TDC stand for? So in our i4 cars, the volume of the combustion chamber at BDC is 9x the volume of the combusion chamber at TDC?
Top dead center

bottom dead center <<< never heard of it refered to as tht though



xci: i knew some of the answers, but i dont know if they were correct
__________________

Originally Posted by Danny
the s2k is like a hot lesbian with a 9k rpm tongue. the sti...is like a hardcore porn star...that likes @ss to mouth.
Reply With Quote
  #45  
Old 10-16-2007, 01:47 PM
xci.ed6's Avatar
xci.ed6 xci.ed6 is offline
Senior Member
Points: 23,020, Level: 46 Points: 23,020, Level: 46 Points: 23,020, Level: 46
Activity: 0% Activity: 0% Activity: 0%
 
Join Date: Sep 2007
Location: Tampa Bay
Posts: 2,909
Rep Power: 58
xci.ed6 is more helpful than most
Member Photo Albums
Re: Engine Theory, Build, Etc Discussion.

Originally Posted by WhiteAccord View Post
OK OK my turn....

So I have K20 pistons and rods...And I got the compression ratio of 9:5:1...

Ok added... GT3*R....at about 17psi.... or so...

Is there any harm here?
not an answerable question. Torque is the best way to estimate the structural limit of the engine, boost is not even an option.

If it blows there is harm, if it holds yay for you. Tune it well and it will last much longer.
Reply With Quote
  #46  
Old 10-16-2007, 01:48 PM
xci.ed6's Avatar
xci.ed6 xci.ed6 is offline
Senior Member
Points: 23,020, Level: 46 Points: 23,020, Level: 46 Points: 23,020, Level: 46
Activity: 0% Activity: 0% Activity: 0%
 
Join Date: Sep 2007
Location: Tampa Bay
Posts: 2,909
Rep Power: 58
xci.ed6 is more helpful than most
Member Photo Albums
Re: Engine Theory, Build, Etc Discussion.

Originally Posted by BadgerType View Post
Top dead center

bottom dead center <<< never heard of it refered to as tht though

bdc is also standard terminology.
Reply With Quote
  #47  
Old 10-16-2007, 03:08 PM
pyaarawala's Avatar
pyaarawala pyaarawala is offline
Senior Member
Points: 22,249, Level: 45 Points: 22,249, Level: 45 Points: 22,249, Level: 45
Activity: 0% Activity: 0% Activity: 0%
 
Join Date: Jul 2007
Location: long island, NY
Posts: 4,087
Rep Power: 49
pyaarawala is somewhat reliable
Send a message via AIM to pyaarawala Send a message via MSN to pyaarawala
Re: Engine Theory, Build, Etc Discussion.

So the stroke is when the air/fuel mixture is compressed, meaning when the connecting rod moves the piston upwards in the cylinder. Since this is compression, for N/A you want this process to be longer (high compression), and for F/I, you want this process to be shorter (low compression), right? And stroker kits one of the ways to change the stroke right?

I know this is a n00b question but what is boring and sleeving and what does that achieve? Let's say for example I want to build my motor for an N/A build, what am I looking to bore/sleeve to? (in case of numbers)
__________________
1998 Honda Accord EX 4cyl AT

Retrofit Club Member #14
White coupes ftmfw
Reply With Quote
  #48  
Old 10-16-2007, 03:34 PM
BlkCurrantKord's Avatar
BlkCurrantKord BlkCurrantKord is offline
Senior Member


Points: 48,661, Level: 68 Points: 48,661, Level: 68 Points: 48,661, Level: 68
Activity: 43% Activity: 43% Activity: 43%
 
Join Date: Sep 2005
Location: Ohio
Age: 35
Posts: 9,280
Rep Power: 121
BlkCurrantKord has their shit togetherBlkCurrantKord has their shit togetherBlkCurrantKord has their shit togetherBlkCurrantKord has their shit together
Send a message via AIM to BlkCurrantKord
Re: Engine Theory, Build, Etc Discussion.

Originally Posted by pyaarawala View Post
So the stroke is when the air/fuel mixture is compressed, meaning when the connecting rod moves the piston upwards in the cylinder. Since this is compression, for N/A you want this process to be longer (high compression), and for F/I, you want this process to be shorter (low compression), right? And stroker kits one of the ways to change the stroke right?

I know this is a n00b question but what is boring and sleeving and what does that achieve? Let's say for example I want to build my motor for an N/A build, what am I looking to bore/sleeve to? (in case of numbers)

The compression stroke is when the piston is moved up in the cylinder towards the head/combustion chamber. Compression is just that, the piston is compressing the mixture of fuel/air in the combustion chamber, then when its ignited it pushes the piston back down the cylinder (Exhaust stroke). Higher compression means that there is less room in the combustion chamber for air/fuel to ignite. This is why high compression pistons have a dome or peak to them. Turbo or low compression pistons are usually dished or recessed to allow more air/fuel, usually from boosted applications b/c your flowing more air into the motor.

You could use a stroker kit to change the stroke, you could also swap in a crank with larger or smaller stroke to it. However, by changing the stroke you're also changing how far up and down the piston/rod has to travel. Then you start coming into things like rod length, location of the pin on the piston, and rod/stroke ratio, and ultimately your compression ratio. Everything is related, you change one, you have to compensate for the others.

Boring is enlarging the cylinder walls or sleeves. Ex: Stock F23 bore is 86mm, stock H22 bore is 87mm, if you overbored the stock cylinders by 1mm you could run H22 pistons and really raise the compression ratio.

Sleeving is replacing the stock cylinders with ones that are made of a stronger material than the stock units. Ex: H22/23's, K20/24's, and the F22/20C all have FRM sleeves which only allow for cast pistons to be run in them, in order to run forged aftermarket pistons, you have to resleeve these motors other wise the expanding of the forged pistons will eat up the stock sleeves in these motors. Sleeving is also a choice for when you want to overbore but can't safely do it on the stock sleeves. Meaning that at some point you can only bore out the stock cylinders so much before you run the risk of running the cylinder walls too thin.

If you're referring to that N/A build I posted, you don't have to bore or sleeve to anything. You could overbore or run stronger/thicker sleeves but its not necessary for an N/A build like that. Boring would increase the displacement and torque.
__________________
Originally Posted by LoveLee
I would love a mushroom stamp after I pass the CPA

Last edited by BlkCurrantKord; 10-16-2007 at 03:41 PM.
Reply With Quote
  #49  
Old 10-16-2007, 03:39 PM
pyaarawala's Avatar
pyaarawala pyaarawala is offline
Senior Member
Points: 22,249, Level: 45 Points: 22,249, Level: 45 Points: 22,249, Level: 45
Activity: 0% Activity: 0% Activity: 0%
 
Join Date: Jul 2007
Location: long island, NY
Posts: 4,087
Rep Power: 49
pyaarawala is somewhat reliable
Send a message via AIM to pyaarawala Send a message via MSN to pyaarawala
Re: Engine Theory, Build, Etc Discussion.

Thanks for all the helpful info, BlkCurrantKord.
__________________
1998 Honda Accord EX 4cyl AT

Retrofit Club Member #14
White coupes ftmfw
Reply With Quote
  #50  
Old 10-31-2007, 04:37 PM
euroking99's Avatar
euroking99 euroking99 is offline
Member
Points: 1,508, Level: 10 Points: 1,508, Level: 10 Points: 1,508, Level: 10
Activity: 0% Activity: 0% Activity: 0%
 
Join Date: Sep 2007
Location: Thousand Palms, CA
Posts: 30
Rep Power: 0
euroking99 is an unknown quantity at this point
Re: Engine Theory, Build, Etc Discussion.

lets startoff with my car, 1999 Accord ex coupe 5spd 4cyl

ive been looking around and have come up with a pretty good hybrid, but looking for some help on the entire construction.not sure if im missing something or if it is all compatible. also, not sure if i will be keeping the a/c, but will keep power steering since it will be DD

f23a1 block
aem pulley kit
f23a1 water pump
h22 water pump gear
lightened and micropolished crank
k20a2 rods and pistons
arp h23 headstuds
f20b head w/ PnP
f20b stock cams (same as prelude type-s/accord euro-r)?
kms valvetrain
f20b lsd tranny
exedy stage 2 clutch
fidanza lightweight flywheel
mfactory 4.64 fd (4.4 fd?)
msd sparkplug wires, distributor, blaster 2 coil
obdII-obdI conversion harness
phearable h22 obdI ecu
hondata s200 (maybe s300?)
5th gen accord fluidyne radiator
optima battery relocated in trunk
accord euro-r cluster
rc 440cc injectors
walbro 255lph fuel pump
aem fuel rail and adj. fuel pressure regulator
all tuned on 91 octane (i hope)

not sure:
prelude axles
what timing belt to use
what motor oil to use
what tranny oil to use
what header,catalytic converter,exhaust to use

LMK if im missing anything. All input is greatly appreciated, especially if u got experience with an N/A build

Last edited by euroking99; 10-31-2007 at 04:58 PM.
Reply With Quote
Reply

Bookmarks

Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off


» Featured Ride
CHECK OUT THIS WEEK'S FEATURED RIDE!



Powered by vBadvanced CMPS v3.2.3