home register FAQ memberlist calendar

Go Back   Turbobricks Forums > Mechanical > performance & suspension

Reply
 
Thread Tools Display Modes
Old 06-09-2017, 12:18 PM   #26
JohnMc
PV Abuser
 
JohnMc's Avatar
 
Join Date: May 2004
Location: St. Louis
Default

Quote:
Originally Posted by John V, outside agitator View Post
Don't get butt-hurt but can you tell me why you'd leave a gauge installed on something like the fuel pressure that you set and forget? I have done a lotta carb set ups and maybe I'm just dumb--many say that is the case and I tend to agree with them--but what good is a gauge under a closed hood? Or a guage left in line..one more cut, 2 more clamps, one more potential thing to bounce around and break.?

I am confuse.
'Cause it looks cool?

I have a gauge on the turbo wagon, MS already told me that the fuel system was running out of flow (an increasingly steep top edge end of the fuel map) but the fuel gauge showed it in a much more direct manner. On the dyno, as the boost rose, so did the fuel pressure, until it hit full boost, at which point it started oscillating and dropping.

Of course, it's a mechanical gauge, under the hood, really not of much use when driving around, if I'm running short of fuel then the WB O2 gauge will let me know.
__________________
'63 PV Rat Rod
'93 245 16VT Classic #1141
JohnMc is offline   Reply With Quote
Old 06-09-2017, 01:07 PM   #27
MikeJr.
Gloss Boss
 
MikeJr.'s Avatar
 
Join Date: Oct 2003
Location: Acworth, GA 30102
Default

Quote:
Originally Posted by John V, outside agitator View Post
I don't.
It violates everything we know about electric pumps...
They like to push..

they don't like heat.

should be low as possible.

1,2, 3 ....just-a like-a dat.
I suppose it could have been worse...they could have mounted it even high and attached to exhaust manifold..
Ok good to know. I want to say I already knew that and maybe forgot.
__________________
My other projects http://www.pbase.com/mikejr
MikeJr. is offline   Reply With Quote
Old 06-09-2017, 01:25 PM   #28
MikeJr.
Gloss Boss
 
MikeJr.'s Avatar
 
Join Date: Oct 2003
Location: Acworth, GA 30102
Default

.
MikeJr. is offline   Reply With Quote
Old 06-09-2017, 01:29 PM   #29
MikeJr.
Gloss Boss
 
MikeJr.'s Avatar
 
Join Date: Oct 2003
Location: Acworth, GA 30102
Default

I have another question. Does it matter how the supply line going into the carbs is oriented? I see a lot of them that the line goes into the T on the first carb, then over to the second, and that's what the kit instructions say to do, but does that starve the second carb of fuel? Should it go into a T fitting separate from the first carb, like between the two, then equally divide into both carbs? Like in hiperfautos pic


Quote:
Originally Posted by hiperfauto View Post

And this is the way I see most configured, and the way they say to do it in the kit
]
MikeJr. is offline   Reply With Quote
Old 06-09-2017, 01:56 PM   #30
JohnMc
PV Abuser
 
JohnMc's Avatar
 
Join Date: May 2004
Location: St. Louis
Default

It doesn't really matter, unless you're running out of fuel (or flow rate), at which point one of the carbs might go dry before the other.

Within the range of acceptable pressures, the carb really won't care about 6 psi vs 4 psi vs 3 psi. The way it meters fuel is utterly independent of the fuel pressure going into them. The float valves control how much fuel goes into the carb (fills to bowls to a certain specific level) and the bowls themselves are vented to outside air so the jets are not affected by incoming fuel pressure at all.

As long as it's not too high - which can force the float valves open and flood the carb (gas will come out the bowl vent and into the air cleaner, down onto the alternator and exhaust manifold, woot) or too low, in which case there might not be enough fuel flow to keep up with the carbs on extended WOT.
JohnMc is offline   Reply With Quote
Old 06-09-2017, 02:10 PM   #31
MikeJr.
Gloss Boss
 
MikeJr.'s Avatar
 
Join Date: Oct 2003
Location: Acworth, GA 30102
Default

Quote:
Originally Posted by JohnMc View Post
It doesn't really matter, unless you're running out of fuel (or flow rate), at which point one of the carbs might go dry before the other.

Within the range of acceptable pressures, the carb really won't care about 6 psi vs 4 psi vs 3 psi. The way it meters fuel is utterly independent of the fuel pressure going into them. The float valves control how much fuel goes into the carb (fills to bowls to a certain specific level) and the bowls themselves are vented to outside air so the jets are not affected by incoming fuel pressure at all.

As long as it's not too high - which can force the float valves open and flood the carb (gas will come out the bowl vent and into the air cleaner, down onto the alternator and exhaust manifold, woot) or too low, in which case there might not be enough fuel flow to keep up with the carbs on extended WOT.
Oh ok makes sense.

Here is another example I found (non-Volvo)


I like this set up. I was thinking about using common plenum to a fresh air supply behind the grille somewhere.
MikeJr. is offline   Reply With Quote
Old 06-09-2017, 02:14 PM   #32
zdriver123
Board Member
 
zdriver123's Avatar
 
Join Date: Sep 2010
Location: Sequim Washington
Default

Quote:
Originally Posted by MikeJr. View Post
Oh ok makes sense.

Here is another example I found (non-Volvo)


I like this set up. I was thinking about using common plenum to a fresh air supply behind the grille somewhere.
It looks very close to the box that Pipercross makes.

http://www.burtonpower.com/parts-by-...?appl_carb=540
zdriver123 is offline   Reply With Quote
Old 06-09-2017, 02:27 PM   #33
MikeJr.
Gloss Boss
 
MikeJr.'s Avatar
 
Join Date: Oct 2003
Location: Acworth, GA 30102
Default

Quote:
Originally Posted by zdriver123 View Post
It looks very close to the box that Pipercross makes.

http://www.burtonpower.com/parts-by-...?appl_carb=540
Yeah I like the Pipercross one better. Looks like it would have better clearance.
MikeJr. is offline   Reply With Quote
Old 06-09-2017, 02:30 PM   #34
hiperfauto
Board Member
 
hiperfauto's Avatar
 
Join Date: Nov 2011
Location: So Cal
Default

The other one is made by Borla.

https://www.borlainduction.com/air-boxes.html
hiperfauto is online now   Reply With Quote
Old 06-09-2017, 02:47 PM   #35
1971Gold142
Board Member
 
1971Gold142's Avatar
 
Join Date: Jul 2016
Location: Portland, OR
Default

Quote:
Originally Posted by John V, outside agitator View Post
Don't get butt-hurt but can you tell me why you'd leave a gauge installed on something like the fuel pressure that you set and forget? I have done a lotta carb set ups and maybe I'm just dumb--many say that is the case and I tend to agree with them--but what good is a gauge under a closed hood? Or a guage left in line..one more cut, 2 more clamps, one more potential thing to bounce around and break.?

I am confuse.
I can take constructive criticism so no prob and a good question. The Filter King doesn't have any way of showing what fuel pressure you are running so I had to have a guage to set it. I could remove it now that I have it set but I like it and also lets me know if I have a fuel supply issue down the road...
__________________
71' 142E
16' Subaru WRX Limited
1971Gold142 is offline   Reply With Quote
Old 06-09-2017, 02:47 PM   #36
MikeJr.
Gloss Boss
 
MikeJr.'s Avatar
 
Join Date: Oct 2003
Location: Acworth, GA 30102
Default

Quote:
Originally Posted by hiperfauto View Post
The other one is made by Borla.

https://www.borlainduction.com/air-boxes.html
Very nice
MikeJr. is offline   Reply With Quote
Old 06-09-2017, 03:04 PM   #37
hiperfauto
Board Member
 
hiperfauto's Avatar
 
Join Date: Nov 2011
Location: So Cal
Default

Borla bought TWM Induction a few years ago. They used to make very nice stuff including 3/8" stainless steel linkage for DCOEs that Pierce Manifolds now carries, except for a neat shaft mounted return spring setup. Now I have to call Borla and talk to the former owner of TWM to get them.

hiperfauto is online now   Reply With Quote
Old 06-09-2017, 03:15 PM   #38
MikeJr.
Gloss Boss
 
MikeJr.'s Avatar
 
Join Date: Oct 2003
Location: Acworth, GA 30102
Default

Quote:
Originally Posted by hiperfauto View Post
Borla bought TWM Induction a few years ago. They used to make very nice stuff including 3/8" stainless steel linkage for DCOEs that Pierce Manifolds now carries, except for a neat shaft mounted return spring setup. Now I have to call Borla and talk to the former owner of TWM to get them.

Those are nice. How much do they run?
MikeJr. is offline   Reply With Quote
Old 06-09-2017, 03:17 PM   #39
MikeJr.
Gloss Boss
 
MikeJr.'s Avatar
 
Join Date: Oct 2003
Location: Acworth, GA 30102
Default

A little off topic, but I came across this as I was image surfing


Anybody wanna by a brand new set of weber DCOE 45s?
MikeJr. is offline   Reply With Quote
Old 06-09-2017, 04:23 PM   #40
hiperfauto
Board Member
 
hiperfauto's Avatar
 
Join Date: Nov 2011
Location: So Cal
Default

Quote:
Originally Posted by MikeJr. View Post
Those are nice. How much do they run?
The 3/8" SS linkage kits are ~$105 and the return spring kit is another $48. The car pictured is an 1800E, so a bottom mount cable linkage kit was also required to the tune of ~$45 as well as a custom throttle cable made from teflon lined braided steel hose and reusable end fittings which was then covered in fire sleeve.

Edit:

The car pictured is a '69 that was converted to cable linkage.

Last edited by hiperfauto; 06-09-2017 at 04:43 PM..
hiperfauto is online now   Reply With Quote
Old 06-09-2017, 09:15 PM   #41
Hotdoggin
Board Member
 
Hotdoggin's Avatar
 
Join Date: Oct 2014
Location: Tallahassee, FL
Default

Quote:
Originally Posted by MikeJr. View Post
A little off topic, but I came across this as I was image surfing


Anybody wanna by a brand new set of weber DCOE 45s?
This makes me feel in adult, mature ways. What a sick thing to make. Jesus.
__________________
1978 245DL - Project
1982 244T - Project
1983 245DL - SOLD
1984 244DL - Project - sale soon
1984 245DL - SOLD
1991 740SE - girlfriend's car
2008 S60 2.5T - Money drainer
Hotdoggin is offline   Reply With Quote
Old 06-09-2017, 10:46 PM   #42
bongo
Board Member
 
Join Date: Jan 2004
Default

if you have a return line, or are willing to run one try something like these guys make http://pmocarb.com/
bongo is offline   Reply With Quote
Old 06-09-2017, 11:46 PM   #43
matt b
Board Member
 
Join Date: Apr 2007
Location: Tucson
Default

Quote:
Originally Posted by MikeJr. View Post
Found a guy that is running a Carter electric fuel pump with a Weber 38DGAS. He said it runs great with that pump. I like how he mounted it in the stock location. Looks to be a 6-8 psi pump. Also it looks like you could use AN fittings if you wanted


http://www.jegs.com/i/Carter/180/P4600HP/10002/-1

They also have a 4-6 psi pump that may also work.

http://www.jegs.com/i/Carter/180/P40...W1GBoCjzHw_wcB

And they also sell a kit
http://www.jegs.com/i/Carter/180/P4070K/10002/-1
I had an identical set up. It overpowered the carbs, as John mentioned, the location wasn't great (even though it did look cool) and the pump is REALLY loud. Obnoxiously loud.
__________________
matt b is online now   Reply With Quote
Old 06-10-2017, 10:05 AM   #44
MikeJr.
Gloss Boss
 
MikeJr.'s Avatar
 
Join Date: Oct 2003
Location: Acworth, GA 30102
Default

Quote:
Originally Posted by matt b View Post
I had an identical set up. It overpowered the carbs, as John mentioned, the location wasn't great (even though it did look cool) and the pump is REALLY loud. Obnoxiously loud.
Good to know

I think I'm just going to go with what John v and Jared recommended.
MikeJr. is offline   Reply With Quote
Old 06-10-2017, 01:27 PM   #45
matt b
Board Member
 
Join Date: Apr 2007
Location: Tucson
Default

Quote:
Originally Posted by Hotdoggin View Post
This makes me feel in adult, mature ways. What a sick thing to make. Jesus.
http://www.jenvey.co.uk/products2/tw...mm-pair-tbpxxi

And with the British pound dropping against the dollar, that's just $500 for the pair. Grab some green tops, some minor odds and ends and you have a sweet looking EFI set up for less than $800.
matt b is online now   Reply With Quote
Old 06-10-2017, 01:46 PM   #46
Shifted
Briefly 'Jostra Quadrox'
 
Shifted's Avatar
 
Join Date: Apr 2007
Location: The Hill, Shinshu Japan
Default

Those are damn nice...
__________________
Quote:
Originally Posted by ME II View Post
Without mistakes there is no learning.
Quote:
Originally Posted by XxJenoxX View Post
Eventually, you're going to have to understand that you can't get a truly non-crazy chick... We're all f7cking nuts.
Quote:
Originally Posted by urbanwheeler
I'm not cool enough to be banned.
"Drink up dreamers, you're running dry." Peter Gabriel

Let my soul have its day in the mud
Shifted 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 04:59 PM.

Powered by vBulletin® Version 3.8.9
Copyright ©2000 - 2017, vBulletin Solutions, Inc.