surge tanks?

renns · Post by **renns** » Thu Aug 10, 2006 3:35 am

eliotmansfield wrote:Renns, what sensor did you use for the fuel pressure monitoring? - has some cheap honeywell sensors come back out?

I'm running a honeywell sensor that was sold on ebay a while back. It requires 5v supply, and sends a 0-5v signal back, to interfacing is easy. I'm splicing into the TPS harness for power.

Roger.

Fastest95PGT · Post by **Fastest95PGT** » Thu Aug 10, 2006 4:18 am

sperry wrote:I made my surge tank out of a small oxygen bottle and just tapped and sealed the fittings and never saw a drop of gas!
you could use a propane bottle from autozone or something but make sure you fill it up with water before you pop the saftey valve out
total project cost wil be 10 bucks for bottle and fittings

Do you have a website about this? This sounds like about the most cost effective way for a DIY surge tank yet!

I'm not confident enough in my welding skills to make my own.

ZedMan · Post by **ZedMan** » Fri Aug 11, 2006 10:27 pm

I found another low-cost solution:
http://www.geocities.com/hrayhouston/antisurgetank.html

although i'm not sure that plastic+gasoline is a good combination.

Fastest95PGT · Post by **Fastest95PGT** » Sat Aug 12, 2006 5:36 am

I would imagine the inside of those water filters aren't just plastic. Decent idea for a web page.

I e-mailed the author of it and asked how it's run since installation and if he still uses it. Also asked if he'd do anything different next time around.

cosmo1stgen · Post by **cosmo1stgen** » Sun Aug 13, 2006 4:43 am

I also have a surge tank in my 85 previously carbed RX-7 (seems to be a few 1st gen rotor heads in this thread

). When I first got the car running I didnt have one and the car would buck and surge like crazy 1st trip around the block. Only took a week before I decided to put one in and I used the same info off of sds website. Im running a large carter pump to fill the surge tank and have the return from the regulator going back to the surge tank. The carter pump is kinda loud for me though but its been going for 4 years and I drive the car every day so I havent touched it. Now im thinking about doing what a buddy of mine did and switch to a bosch volvo FI pump to fill the tank much quiter.
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jonfx4com · Post by **jonfx4com** » Sun Aug 13, 2006 4:43 am

And before anyone tells me that in http://www.sdsefi.com/techsurge.htm the fuel bleeding out of the fuel pressure reg is going back into the swirl pot- forget it! After 5 mins in traffic the recirculating fuel gets so hot it starts vaporizing in the lines, its a bad solution which I fell for when I saw a similar drawing on another website. I suppose you could add a fuel cooler but then you're buying 2 fuel pumps a swirl pot and a fuel cooler to save you doing it right! Jon
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eliotmansfield · Post by **eliotmansfield** » Sun Aug 13, 2006 4:44 am

Here's the connector: http://www.deutsch.co.uk/corporate/defa ... er_ftc.asp or go to root of site, product search, enter nothing, press search, scroll down to autosport range.
Eliot Mansfield 5.7L Twin Turbo Dakar 4x4. www.mez.co.uk
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renns · Post by **renns** » Sun Aug 13, 2006 4:44 am

jonfx4com wrote: And before anyone tells me that... Too late!
1979 Mazda RX-7, running MSnSExtra029L for fuel and spark control on a turbocharged, intercooled, and (of course!) injected 13B rotary.
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eliotmansfield · Post by **eliotmansfield** » Sun Aug 13, 2006 4:44 am

Rens, what sensor did you use for the fuel pressure monitoring? - has some cheap honeywell sensors come back out? To see how the professionals deal with surge tanks, here's the insides of a Subaru WRC surge tank. It has two bosch 044 motosport pumps and a couple of delco lift pumps http://homepages.nildram.co.uk/~eliotmez/liftpump1.jpg http://homepages.nildram.co.uk/~eliotmez/liftpump2.jpg http://homepages.nildram.co.uk/~eliotmez/liftpump3.jpg
Eliot Mansfield 5.7L Twin Turbo Dakar 4x4. www.mez.co.uk
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eliotmansfield · Post by **eliotmansfield** » Sun Aug 13, 2006 4:45 am

that was the one i was thinking about. "pyrojoe" was the seller if i recall. wished there were more about.

From: renns [mailto:renns_99@yahoo.com]
Sent: 10 August 2006 12:36
To: megasquirt-fuel@msefi.com
Subject: surge tanks?

eliotmansfield wrote: Renns, what sensor did you use for the fuel pressure monitoring? - has some cheap honeywell sensors come back out?
I'm running a honeywell sensor that was sold on ebay a while back. It requires 5v supply, and sends a 0-5v signal back, to interfacing is easy. I'm splicing into the TPS harness for power.

Roger.

1979 Mazda RX-7, running MSnSExtra029L for fuel and spark control on a turbocharged, intercooled, and
(of course!) injected 13B rotary.

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http://www.msefi.com/viewtopic.php?p=135628#135628

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