SuzukiSavage.com - tuneing your intake

Kris01 Serious Thumper Offline Eat, sleep, RIDE! Posts: 3767 Tennessee Gender:	Re: tuneing your intake Reply #45 - 06/05/16 at 20:06:26 Here's a decent formula that's fairly simple: http://www.rx7club.com/general-rotary-tech-support-11/heres-how-figure-out-in... I've run across this formula several times.
Back to top	There's no problem that a full tank of gas and a sunny day can't fix! 2008 S40, Rotella T 15W-40 w/ZDDP added, Dyna, 140/90-15, Battery Tender Jr., Seat lift, #52.5/150/3 washers, Raptor IP Logged

Ruttly

Serious Thumper

Offline

Thumpers Rule

Posts: 5099
Manteca , CA
Gender: male

Re: tuneing your intake
Reply #46 - 06/05/16 at 20:26:50

So it's kinda like trying to balance a single cylinder engine I need to know at what rpm I want it to be balanced but in this case I need to know at what rpm I want peak power/ram induction being I can't change my timing or valve timing. Is that correct ?
Whoops thanks kris01 for that link good stuff always fun learning new stuff and this is going to be fun , engines=math !

Back to top

The Topic Terminator

IP Logged

verslagen1 YaBB Moderator ModSquad Offline Where there's a will, I want to be in it. Posts: 28884 L.A. California Gender:	Re: tuneing your intake Reply #47 - 06/06/16 at 13:49:11
Back to top	Versey's Place Tech Section Index IP Logged

Kenny G Serious Thumper Offline SuzukiSavage.com The Singles Club...LOL Posts: 1754 Robson Ranch, Denton, Texas Gender:	Re: tuneing your intake Reply #48 - 06/06/16 at 14:11:25 Verslagen, Thanks for the pictures. I think I could do something similar if I had a parts list and written instruction, but on my own I guess I will just drool. Did you notice an increase in performance? Kenny G
Back to top	IP Logged

verslagen1

YaBB Moderator
ModSquad

Offline

Where there's a
will, I want to be
in it.

Posts: 28884
L.A. California
Gender: male

Re: tuneing your intake
Reply #49 - 06/06/16 at 14:24:58

That's a edelbrock quicksilver 40mm carb.

That and a stock airbox with a K&N drop in will get you from 70 to 95 in a third of the distance a stock carb will get you 85.
After that the limitations of the stock petcock play in.

I was quite surprised that I was running even with MMR on mpg last year at the dragon. She really likes eastern gas over western barfenated stuff.

Quote:

if I had a parts list and written instruction

It's like cooking, a pinch of this and a smidgen of that.
The seat of the pants says its right or the ear says change that.

Back to top

Versey's Place
Tech Section Index

IP Logged

Kenny G

Serious Thumper

Offline

SuzukiSavage.com The
Singles Club...LOL

Posts: 1754
Robson Ranch, Denton, Texas
Gender: male

Re: tuneing your intake
Reply #50 - 06/06/16 at 14:33:28

Verslagen,

I have thought about switching to a Lectron carburetor, but the factory carburetor, with Lancer's help, is working without anything that I can think to improve at the moment.

Additional acceleration is always the improvement that makes us feel good. Maybe once the hot summer weather here in Texas is over I will try Windsor's kit.

Thanks again for the pictures. That setup is badass looking.

Kenny G

Back to top

IP Logged

Ruttly Serious Thumper Offline Thumpers Rule Posts: 5099 Manteca , CA Gender:	Re: tuneing your intake Reply #51 - 06/06/16 at 15:11:43 Versy , What piston and cam are you using ?
Back to top	The Topic Terminator IP Logged

verslagen1 YaBB Moderator ModSquad Offline Where there's a will, I want to be in it. Posts: 28884 L.A. California Gender:	Re: tuneing your intake Reply #52 - 06/06/16 at 17:39:04 She sips premium and has lotsa torque.
Back to top	Versey's Place Tech Section Index IP Logged

Kris01

Serious Thumper

Offline

Eat, sleep, RIDE!

Posts: 3767
Tennessee
Gender: male

Re: tuneing your intake
Reply #53 - 06/06/16 at 18:54:21

Ruttly wrote on 06/05/16 at 20:26:50:

So it's kinda like trying to balance a single cylinder engine I need to know at what rpm I want it to be balanced but in this case I need to know at what rpm I want peak power/ram induction being I can't change my timing or valve timing. Is that correct ?
Whoops thanks kris01 for that link good stuff always fun learning new stuff and this is going to be fun , engines=math !

For a stock (or roughly stock) engine, 3500ish RPMs is a good compromise. Peak torque occurs somewhere around that point. This dyno chart is not dead-on accurate but it's pretty close. You want the ram effect to influence torque usually. I would tune around 3500-3800 RPMs.

Back to top

Dyno.jpg

There's no problem that a full tank of gas and a sunny day can't fix!

2008 S40, Rotella T 15W-40 w/ZDDP added, Dyna, 140/90-15, Battery Tender Jr., Seat lift, #52.5/150/3 washers, Raptor

IP Logged

Kruzader

Full Member

Offline

SuzukiSavage.com
Rocks!

Posts: 129
Stockon, CA
Gender: male

Re: tuneing your intake
Reply #54 - 06/06/16 at 23:02:46

Quote:

I don't believe the stock intake is nearly that long....I cut the stock rubber tube just about in half. As a guess, I believe the stock rubber boot/tube is about 5" long.

I also wonder if any of the length of the foam filter acts as a part of the plenum?

My pipe has never turned. I jetted by bike with a fuel/air meter installed, and I the fuel/air meter allowed me to adjust the jets more precisely than I could have done by ear/feel. I am confident my bike runs well, and does not have any bad habits (unlike the rider).

Hello Dave, what is and where can i get a fuel/air meter? I need to rejet my carb an will like to be as precise as possible.

Back to top

When you need something and have limited resources be creative.

2005 Boulevard S40 - Elevation 13'

IP Logged

VortecCPI Full Member Offline SuzukiSavage.com Rocks! Posts: 127	Re: tuneing your intake Reply #55 - 06/07/16 at 04:01:25 Length is from atmosphere (filter flange) to valve face. While the filter aids with signal due to pressure drop it is not in the length equation. Good read here: https://forums.neons.org/viewtopic.php?t=294784 And here: http://www.emeraldm3d.com/articles/emr-adj-length-intake This is how much space I had in the SRX600:
Back to top	SRX.PNG IP Logged

Dave YaBB Moderator ModSquad Offline SuzukiSavage.com Rocks! Posts: 18098 Camp Springs, Kentucky Gender:	Re: tuneing your intake Reply #56 - 06/07/16 at 14:23:13 Kruzader wrote on 06/06/16 at 23:02:46: Hello Dave, what is and where can i get a fuel/air meter? I need to rejet my carb an will like to be as precise as possible. http://suzukisavage.com/cgi-bin/YaBB.pl?num=1348491882
Back to top	Someday I will be old......But not today! IP Logged

Kris01

Serious Thumper

Offline

Eat, sleep, RIDE!

Posts: 3767
Tennessee
Gender: male

Re: tuneing your intake
Reply #57 - 06/07/16 at 19:24:19

VortecCPI wrote on 06/07/16 at 04:01:25:

Length is from atmosphere (filter flange) to valve face. While the filter aids with signal due to pressure drop it is not in the length equation.

Good read here: https://forums.neons.org/viewtopic.php?t=294784

And here: http://www.emeraldm3d.com/articles/emr-adj-length-intake

This is how much space I had in the SRX600:

Very interesting read. So where would a velocity stack fit - before or after the air filter? I assume you'd need the air to enter the vel. stack and then the filter but wouldn't that dilute the wave?

Back to top

There's no problem that a full tank of gas and a sunny day can't fix!

2008 S40, Rotella T 15W-40 w/ZDDP added, Dyna, 140/90-15, Battery Tender Jr., Seat lift, #52.5/150/3 washers, Raptor

IP Logged

Kenny G Serious Thumper Offline SuzukiSavage.com The Singles Club...LOL Posts: 1754 Robson Ranch, Denton, Texas Gender:	Re: tuneing your intake Reply #58 - 06/07/16 at 20:44:28 I have always been curious about what modifications are possible with the stock air box to make the engine breath a little better. Kenny G
Back to top	IP Logged

LANCER Serious Thumper Alliance Member Offline Savage Beast Performance Parts Posts: 10661 Oklahoma Gender:	Re: tuneing your intake Reply #59 - 06/08/16 at 02:29:28 [quote ] So where would a velocity stack fit - before or after the air filter? [/quote] With a velocity stack there is typically no standard filter used. Some stacks have a screen or micro-screen covering the intake end though. SCREEN MICRO-SCREEN
Back to top	IP Logged