home register FAQ memberlist calendar

Go Back   Turbobricks Forums > Mechanical > projects & restorations

Reply
 
Thread Tools Display Modes
Old 07-06-2018, 10:52 AM   #201
Pillow
Sleazebag 7-9 Owner
 
Pillow's Avatar
 
Join Date: Dec 2015
Location: NoVA
Default

Good luck man!!! Keep us posted on the low timeslips Get those slicks to hook on the warm tarmac.
__________________
#79WDP
2006 XC70 Wagon - "Chuck Feo" - Daughters ride - stock
1992 965 - "Savage Wagon" w LS 5.3 LM7 + LS7 cam + GM T5 swap in progress.
1983 Jeep Cherokee - LS 5.3 LM7 + LS9 cam + SM465 swap in progress
1971 Chevy C-10 w 5.3 LS (LS2 cam) & GM T5 trans
Pillow is offline   Reply With Quote
Old 07-06-2018, 05:35 PM   #202
740atl
educator monkey
 
740atl's Avatar
 
Join Date: Apr 2010
Location: south jersey
Default

Quote:
Originally Posted by Andrewhans View Post
Got the final piece of the fuel pump puzzle. Going to have the MS3 GoldBox trigger this at 4-5psi to boost voltage to the pump. Going to turn the voltage back down to very slightly above normal. I want 13.9-14v at hot idle. When triggered this will boost voltage to 17.5v at the pump only. We will see how much it shorten pump life but this is the go to method for some other chassis that have a pump that is near the edge of being not enough.

12v in from Batt on fused(40a) red, good chassis ground on black, direct pass through when off on orange and when triggered orange outputs 17 ish volts. Ground trigger is Brown. DC-DC converter with passthrough.

Andrew what does the fuel pump booster do? Does the increased voltage correlate with increased pump output?

btw, lovin the build.
740atl is offline   Reply With Quote
Old 07-06-2018, 11:05 PM   #203
volvo?
That One Guy
 
Join Date: Nov 2009
Location: Oregon City, OR
Default

Quote:
Originally Posted by 740atl View Post
Andrew what does the fuel pump booster do? Does the increased voltage correlate with increased pump output?

btw, lovin the build.
That is what it does.
__________________
Quote:
Originally Posted by centason View Post
The man loved hoes. Used to yell it from the rooftops.
volvo? is offline   Reply With Quote
Old 07-07-2018, 05:41 AM   #204
740atl
educator monkey
 
740atl's Avatar
 
Join Date: Apr 2010
Location: south jersey
Default

Quote:
Originally Posted by volvo? View Post
That is what it does.
I might be answering my own question again, but if the pump output is increased at the same kPa/RPM, then that is something that would require less VE at the same kPa/RPM which means a bit of retuning.

Is the voltage output of the multipler consistent?

Was the choice to go with the pump multiplier instead of larger injectors?
740atl is offline   Reply With Quote
Old 07-07-2018, 06:49 AM   #205
linuxman51
BRANDSCHUTZVORSCHRIFTEN!
 
linuxman51's Avatar
 
Join Date: Dec 2002
Location: mont, AL
Default

moar volts is betters. if the ecu can handle it, coils hit harder, injectors work faster, pumps pump more.
__________________
"They bum rushed them in their own crib, they drank all their beer, they partied with their ladies and they left with the trophy"

Now with in-house Dyno tuning!

Megasquirt Tuning!
Plug and play LH 2.4 Megasquirt, now with stealth mode!
linuxman51 is offline   Reply With Quote
Old 07-07-2018, 06:30 PM   #206
Andrewhans
Board Member
 
Andrewhans's Avatar
 
Join Date: Jan 2013
Location: Kenly, NC
Default

Quote:
Originally Posted by 740atl View Post
I might be answering my own question again, but if the pump output is increased at the same kPa/RPM, then that is something that would require less VE at the same kPa/RPM which means a bit of retuning.

Is the voltage output of the multipler consistent?

Was the choice to go with the pump multiplier instead of larger injectors?
Cheaper to get this booster($100 used of CL)

Voltage output is constant 17.5v independent of input voltage(to a point obviously) when activated.

Im triggering the booster prior to when I was loosing fuel pressure before. So that area is fine but the part of the map that was overcompensating on the pulse width to bring my AFR back in line is now overly rich.

Back to the updates!

New best time! 7.5 @103


Left the line at idle and floored it right away. Viewing the datalog I seem to be lifting as boost comes up in first gear. Not sure why though I dont remember lifting at all...

This was at 12psi 13ish deg timing on e85. Going to turn the boost up to 15psi and make a few more passes. Got some great datalogs too of the Boost-A-Pump working great prefect fuel pressure the entire pass.

My wife took a few videos for me. Had a blast last night.






Overall great time.
__________________
Andrewhans is offline   Reply With Quote
Old 07-07-2018, 06:35 PM   #207
Andrewhans
Board Member
 
Andrewhans's Avatar
 
Join Date: Jan 2013
Location: Kenly, NC
Default

Quote:
Originally Posted by linuxman51 View Post
moar volts is betters. if the ecu can handle it, coils hit harder, injectors work faster, pumps pump more.
Couldnt agree more. I had the system voltage overboosted too much. 15.4v cold and 14.8v hot. I felt like eventually I was going to cook the battery so I lowered the voltage. Now its around 14.8v cold and 14.4 hot which is perfect IMO. Under full song it drops to 13.8v and I only have a .3v drop from batt to fuel pump relay output post and 17v output of the actual boost a pump.

The walbro 450 is an animal when fed the proper voltage.
Andrewhans is offline   Reply With Quote
Old 07-07-2018, 10:26 PM   #208
Pillow
Sleazebag 7-9 Owner
 
Pillow's Avatar
 
Join Date: Dec 2015
Location: NoVA
Default

That last video coming around the Mustang was beautiful!

Sorry if I missed it, but why not leave harder? What stall converter RPM? Traction? trans brake? And I say that because you all pulling all of them on the back half. Once the launch is perfected, you are going to make some people cry looking at your taillights!
Pillow is offline   Reply With Quote
Old 07-08-2018, 12:00 AM   #209
cosbySweater
Board Member
 
cosbySweater's Avatar
 
Join Date: Jul 2009
Location: Monterey/Falun
Default

Did you verify the timing???
__________________
1979 Volvo 244DL 6.0/4l80e,8.8,Ms3x goldbox ecu and Mircrosquirt tcu, s366 clone, 11.4@123mph 9psi
2005 Honda Civic Hybrid, 5 Speed
1991 Volvo 245, so stock it hurts, and I like it that way
1982 Ford Fairmont Futura, 4.8/th400, 8.8, mircrosquirt, 7875 turbo, 228/230 cam, Project Cheap Thrills

Quote:
Originally Posted by bricktop420 View Post
Thank you very much everybody... i now feel sufficiently retarded and will go cry in the corner...
cosbySweater is offline   Reply With Quote
Old 07-08-2018, 08:14 PM   #210
Andrewhans
Board Member
 
Andrewhans's Avatar
 
Join Date: Jan 2013
Location: Kenly, NC
Default

Quote:
Originally Posted by Pillow View Post
That last video coming around the Mustang was beautiful!

Sorry if I missed it, but why not leave harder? What stall converter RPM? Traction? trans brake? And I say that because you all pulling all of them on the back half. Once the launch is perfected, you are going to make some people cry looking at your taillights!
Working up on the boost off the line. Also I just got to the point where I can floor it in first and not spin the tires. Now that I have that down Im gonna turn the boost up and try and brake boost a bit to leave a bit harder. No transbrake, unsure on stall number. Its a custom spec'd unit from PTC, works amazing.

Once the launch is dialed, its gonna be mean at the track.

Quote:
Originally Posted by cosbySweater View Post
Did you verify the timing???
Not yet. I need too, but I've been too lazy. I need to find the right kind of timing light too. I have a fixed one the just flashes, no dialback or readout.

Last edited by Andrewhans; 07-08-2018 at 08:24 PM..
Andrewhans is offline   Reply With Quote
Old 07-09-2018, 09:02 AM   #211
Pillow
Sleazebag 7-9 Owner
 
Pillow's Avatar
 
Join Date: Dec 2015
Location: NoVA
Default

[QUOTE=Andrewhans;5822600]Once the launch is dialed, its gonna be mean at the track./QUOTE]

Yes it will!
Pillow is offline   Reply With Quote
Old 07-14-2018, 08:56 AM   #212
Andrewhans
Board Member
 
Andrewhans's Avatar
 
Join Date: Jan 2013
Location: Kenly, NC
Default

Got the 2 step working. First video is 2500rpm and -2 timing second video is 3800rpm and -4 deg timing.




Didnt really do mich better. Im traction limited. The open diff is ****ing me on the burnout and at the 60'. I dont want to weld it bc I drive it on the street quite a bit and don't want it to be miserable and destroy the bushing back there any more than they are lol.
Andrewhans is offline   Reply With Quote
Reply

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 On

Forum Jump


All times are GMT -4. The time now is 07:31 PM.

Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2018, vBulletin Solutions Inc.