Honda Prelude Forum
 
Go Back   Honda Prelude Forum > Tech-Talk > General Tech Talk > Forced Induction

Thread Title
Looking for some insight on my build speak your thoughts

 
Reply
 
LinkBack Thread Tools Display Modes
  #1 (permalink)  
Old 01-03-2010, 11:39 PM
WhiteOnRice's Avatar
Junior Member
 
Join Date: Dec 2009
Location: Derty Jerzey
Posts: 93
iTrader: (0)
WhiteOnRice has a reputation beyond reputeWhiteOnRice has a reputation beyond reputeWhiteOnRice has a reputation beyond reputeWhiteOnRice has a reputation beyond reputeWhiteOnRice has a reputation beyond reputeWhiteOnRice has a reputation beyond reputeWhiteOnRice has a reputation beyond reputeWhiteOnRice has a reputation beyond reputeWhiteOnRice has a reputation beyond reputeWhiteOnRice has a reputation beyond reputeWhiteOnRice has a reputation beyond repute
Send a message via AIM to WhiteOnRice
Icon5 Looking for some insight on my build speak your thoughts

Alright I have been playing around with some configurations for a build I hope to start this summer. I am mainly looking for some insight on practicallity and possibility of it from you guys and gals and therefore all opinions, theories, etc. are welcome. All I ask is to keep flaming to a minimum as I am new to and still learning about our engine geometry
and what works or doesnt so with that said lets begin.

1994 Prelude if it matters...
k24a1 Darton sleeved Block 89mm Bore
K20a head
K20Z3 trans w/ 5.062 Final Drive
K24z6 destroked crankshaft: 97mm
w/ widened rod journals: 23.8mm (0.938") BE width
Custom Pauter Rods: 157.5mm
Custom Arias Pistons: 25mm comp height -2.5CC concave dome
Cosworth headgasket 90mm bore 1.1mm thick

Now IF my math is correct and it isnt most of the time Ive come up with this as the final result.

Displacement: 2413.80cc OR 2.413L
Piston speed: 5091.864 fps @ 8k RPM
Mean Piston speed: 2147 fps 8k RPM max
Max Piston acceleration: 145903 fps
Piston-To-deck height: 0.018" @ TDC
Static Compression Ratio: 10.52:1
Effective Compression Ratio: 10.34:1
Rod/Stroke Ratio: 1.63:1
Effective Compression Ratio @ 8PSI: 15.99:1
Effective Compression Ratio @ 12PSI: 18.81:1
Effective Compression Ratio @ 16PSI: 21.62:1
Effective Compression Ratio @ 20PSI: 25.20:1

My main reason for this thread is to see if these numbers I have posted are correct and if this would be plausible in real life. My main goal was to retain the torque numbers produced by the longer stroke of the K24 crankshaft but shorten the stride enough to produce a more "optimal" Rod/Stroke Ratio from 1.54:1 to 1.63:1. This is based off information I have found stating 1.75:1 is a "perfect" Rod/stroke Ratio. Additionally lowering piston speed allowing for higher revving if there is power to be made at higher RPM Afterward the
piston compression height was adjusted to allow for the longer rod by shortening it from the stock piston compression height of 30 mm down to 25mm. Retaining piston shape similar to the base model RSX -2.5cc keeping
the compression ratio fairly low at 10.34:1. If your curious as to why I left
.018 clearance at TDC It is simply for decking purposes and things will be adjusted later on accordingly.

As of now I have no real goal I aspire to reach and accordingly what it produces will be it, On to my Queries.

I am curious about the piston compression height being possible will shortening as well as it having a negative surface area interfere with the connecting rod and hardware? Stock compression height = 30mm

Ive never really understood how attach a k20 head to a k24 block with a wider bore considering the K20 head was designed to an 86mm bore do I need to have it machined to fit the 89 mm bore?

Lastly is boost related I dont plan ong oing above 12 PSI as it will be a daily driven car but will I be able to run premium gas 93 octane on 12 or possibly 16if it im at the strip?
Turbo is currently being chosen but Im still working with maps yes I know PSI means nothing.

That is all I can think of at the moment so I suppose Ill leave it at this for now again all opinions, theories, etc. are welcome.

cheers.
__________________

The whistles go WOOOOOOO

hunting for a rust free 4th gen stripped shell hit me ^!
Reply With Quote
Reply


Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools
Display Modes

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
Trackbacks are On
Pingbacks are On
Refbacks are On


Similar Threads
Thread Thread Starter Forum Replies Last Post
which one head build or block build nightwing 5th Gen Honda Prelude 7 04-06-2014 03:10 PM
My new used 91 lude :) Looking for some insight JRLCrist 3rd Gen Honda Prelude 4 04-09-2008 11:05 PM
Being towed as we speak... sine mora 3rd Gen Honda Prelude 23 02-25-2008 09:29 PM


All times are GMT -4. The time now is 11:46 PM.



Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2019, vBulletin Solutions, Inc.
LinkBacks Enabled by vBSEO 3.6.0 PL2 © 2011, Crawlability, Inc.
vB.Sponsors


Copyright © 2006-2009 PreludeZone.com All Rights Reserved.