This may have been done before since i'm new here, but what amount of boost are you running on your 420a and what mods did you have to do to safely achive that amount of boost?



:7

0 pounds.....hopefully soon to be 8

anything over 8lbs of boost requieres the need for built bottom end/propor fuel system

What about compression ratios? Do they need to be lowered for anything under 15psi?

higher compression = less boost or harder to tune for more boost
lower compression = more boost, easier to tune for higher boost pressures

just curious lets say your built and want to run more boost how much boost can you run until you run into issues with timing advance? lets say for a 10.5:1 compression ^_^

check this link, everything thats being performed on the 2.4..http://forums.2gnt.com/dcboard.php?az=show_topic&forum=5&topic_id=50102&mesg_id=50102&page=

hoping for 375whp at around 16-20 psi's.

DWAYNE H
Honda coupe ~ SOLD!
R6 and Aprilia~ Sold on EBAY!
Red/Black/Silver 01 GSXR 750
96 2GNT, HRC STAGE 4 S20G, 2.4 SWAP< IN PROGRESS. Kaminari widebody, KMC suicides 19s. Apexi Safc AVCR RSM. Blowjax air ride.

13 psi/ Built motor @ 8.8:1 compression with JE pistons and rings/Eagle rods

sounds like my setup

A whopping 5 psi. And it's staying that way until I get my bottom end rebuilt or get a new car.

17 psi
8.8 compression

lates
james

Call me a biach, but 4.5 psi on built bottom end...:P Oil leak out of the bed plate junction man...

18-20 8.6:1

3 weeks ago it was 20, it's now zero, but soon to be twenty again (1 week to go!)

14psi with built bottom end. JE Pistons and rings 8.6:1, Eagle rods...

>anything over 8lbs of boost requieres the need for built
>bottom end/propor fuel system

I thought you can 10psi with a fmic on stock internals ? Oh I am at 15-16psi but 12psi daily on my gst.



95 gs-t
6 bolt swap
T-2small turbo
15 Psi
Joe P mbc
Greddy uip
Greddy lip
Greddy bov
Supra smic
Borla cat back exhaust
Gutted cat
Apexi Safc
Walboro 255 fuel pump
Autometer gauges -Egt,Air/Fuel and Boost

>I thought you can 10psi with a fmic on stock internals ? Oh I
>am at 15-16psi but 12psi daily on my gst.

It doesn't matter if you have a FMIC or not. The temperature of the air charge is not really the problem. The stock pistons can only handle around 8psi of pressure before you risk breaking them.

I run 15psi, 8.6:1 compression, JE pistons, Eagle rods.

5-7 PSI (depends on how much my current FMIC piping wants to leak)
7 PSI when EvulFleas STAR FMIC and piping come
and early next month 13 or so on 420AAvenger's built block Im buyin off him (after I upgrade fuel as well)

Dual stage boost controller set at 14 psi and 19 psi, but for the most part, I boost 14 psi daily driving. I have a fully built internal (8.8:1 compression) and a piggy-back fuel controller (Accel DFI).

stock engine at 9psi, and for kicks 12psi if i get bored with 9psi. #30 injectors and timing retard if needed. in a few weeks i will be using the 8-injector setup followed by my rebuild.
oh kaiser, your a bihoo like you said haha.. j/p dude.. hehe... get that leak fix or im going to slap your built motor around with my stock motor hehe..
let me know when you plan to meet with the guys to fix it..
cool

Michael 99gs
HRC Stage 2 @12psi :D
Stage 3 process begins gathering parts for rebuild
2GNT Member #32

http://www.dreamwater.net/purplebeast

8psi daily for 10 months. Stock internals, Walbro 255 inline, cartech FPR, stock injectors, FMIC and I STILL run rich, so does that mean I can run 10psi with 105 octane? :D


http://www.cardomain.com/id/jasvbts2k2
"The ONLY Honda I'd mod would be ASIMO"

What octane are you guys using over 15 psi... Also Whats your fuel system look like... Im hoping UPS man comes today with some boxes from HRC. Just woundering what fuel Ill need and system to back it.

Great reponses guys!! this is exactly what I was looking for...

Now... does anyone have the equation for figuring out the comprestion? is it based on bore and stroke?

I have no idea what compression I'm running right now...

(damn I feel dumb... please laugh at me....) :rolleyes







:7

If you still have stock internals in your 420A motor, you have 9.6:1 compression. I think just about everyone on the board that runs over 8psi has dropped their compression either voluntarily, or by blowing the engine. I think we have one or two members on the board that are going turbo with higher compression (10.5:1) but they are using stronger forged pistons/rods.

>If you still have stock internals in your 420A motor, you
>have 9.6:1 compression. I think just about everyone on the
>board that runs over 8psi has dropped their compression either
>voluntarily, or by blowing the engine. I think we have one or
>two members on the board that are going turbo with higher
>compression (10.5:1) but they are using stronger forged
>pistons/rods.

I have a built bottom with JE pistons / Eagle rods... I figured out it is printed on the data sheet for the rods...

What internals are they using with a 10.5:1 ratio?

8 psi



1998 Eclipse GS,Hahn Stage 2 Turbo Kit w/ Missing Likn and Vortech SFMU,TurboXS Type H RFL,Corbins Digital A/F Gauge,Apex N1 Exhaust, Nuespeed Short Shifter,Autometer Boost,EGT and A/F

About 15psi untuned with fully built engine with 8.8:1 compression. It's down right now to be tuned for 22psi. :)

if you had the bowls on the head shaved to lower compression could you run 10 psi on stock internals without having a problem?