Notices
Forced Induction Turbochargers and Superchargers..Got Boost?

no reason to buy a Walbro 255L anymore

Thread Tools
 
Search this Thread
 
Old 12-02-2010, 09:33 PM
  #41  
Vas_Z33
New Member
iTrader: (39)
 
Vas_Z33's Avatar
 
Join Date: Jan 2009
Location: westchester NY
Posts: 1,709
Received 25 Likes on 22 Posts
Default

Originally Posted by Zivman
well, got some info on the PT342 from JayRacing.

My evo went in for a tune today and I just heard from my tuner. Ran out of pump about the same level as a 255.

28 psi on an FP Red on E85 428 hp on a dyno dynamics
damn, yeah a simple cjm twin pump sounds better to me..

  • pix of the evo?
Old 12-03-2010, 05:15 AM
  #42  
binder
New Member
iTrader: (8)
 
binder's Avatar
 
Join Date: Jan 2007
Location: terre haute, IN; STL, MO
Posts: 6,457
Likes: 0
Received 7 Likes on 6 Posts
Default

Originally Posted by Cux350z
Guess you missed my comment in ashtons thread? The flow rating drops as pressure increases. 255lph is best case.....it only gets worse from there. Your assumption that the walbro will flow more than the 600cc injectors may be incorrect for the actual pressures being used.

Also remember injectors are rated at a certain pressure too. If you increase the pressure at an injector then the cc rating should increase as well.
no, i got the comment and understand how it works. I was trying to keep the math simple without adding additional stuff into it. Straight across the board in an "ideal" world is what i was refering to. Obviously we are less than ideal world based on physics so the outcome would be less than calculated.

I was on 800's when my pump ran out rich.
Old 12-03-2010, 02:33 PM
  #43  
phunk
CJ Motorsports
iTrader: (21)
 
phunk's Avatar
 
Join Date: Apr 2003
Location: West Chicago, IL
Posts: 3,997
Likes: 0
Received 3 Likes on 3 Posts
Default

the gentlemen in that thread who said he bought that pump and posted the pics of it... he said that the inlet and outlet is larger, well... walbro 255s have been available with that size inlet for years, and the outlet is the same 5/16 they all have.

BTW guys... I know that our CJM Twin pump is not compatible with standard walbro GSS342... however, our pumps in the twin assembly ARE in fact an OEM application and if walbro makes a larger pump that is the same dimensions, there is no way they will ignore the OEM application we use the pumps from, and we will be able to swap them in!
Old 12-08-2010, 11:52 AM
  #44  
rcdash
New Member
iTrader: (18)
 
rcdash's Avatar
 
Join Date: Jul 2005
Location: Chapel Hill, NC
Posts: 6,474
Received 65 Likes on 56 Posts
Default

What a scam artist! Boo! The pump is a 255 that's been magically modified to flow 385 lph. Right.

http://www.s2ki.com/forums/index.php...#entry19894061

Last edited by rcdash; 12-08-2010 at 11:53 AM.
Old 12-08-2010, 12:37 PM
  #45  
str8dum1
New Member
Thread Starter
iTrader: (11)
 
str8dum1's Avatar
 
Join Date: Oct 2007
Location: raleigh-wood NC
Posts: 8,807
Likes: 0
Received 6 Likes on 6 Posts
Default

ya, i jumped the gun as did many other people. lol
Old 12-08-2010, 02:08 PM
  #46  
InjectedPerformance
Vendor - Former Vendor
iTrader: (56)
 
InjectedPerformance's Avatar
 
Join Date: Jun 2004
Location: Lexington, KY
Posts: 1,756
Likes: 0
Received 0 Likes on 0 Posts
Default

We will have the walbro 325lph pump in our hands prior to its release for testing, but that is still about a month out as walbro themselves are still in their testing stages. We have the DW300 in our hands now and will being testing it very soon and will publish the results when we have them. So for now its either a single GSS342 or step up to the plate with Cj's twin setup.
Old 12-14-2010, 08:39 AM
  #47  
Chris@DW
New Member
 
Chris@DW's Avatar
 
Join Date: Dec 2010
Location: Oklahoma City
Posts: 39
Likes: 0
Received 3 Likes on 3 Posts
Default

We were intrigued as well, so I ordered one from EuroExotic. We got the pump in and cross-referenced the part number, it is for the GM Cyclone and Typhoon...but it is just a 255LPH. The flow bench confirmed that it is a 255, also.

Our DW300 is not a rebadged pump. It was designed with DW and is being exclusively manufactured for DW.

Can't wait to hear from you guys, Forged and Injected! Let's see what the DW300 can do in the Z/G platform.

For those that also browse other makes (specifically Mitsubishi), you may be seen posts about our DW300 and DW 1500cc injectors in a 1st Gen AWD DSM putting down 620awhp on E85.

Last edited by Chris@DW; 12-14-2010 at 03:43 PM.
Old 12-14-2010, 09:22 AM
  #48  
str8dum1
New Member
Thread Starter
iTrader: (11)
 
str8dum1's Avatar
 
Join Date: Oct 2007
Location: raleigh-wood NC
Posts: 8,807
Likes: 0
Received 6 Likes on 6 Posts
Default

pics of DW pump? dimensions?

i wonder if the denso 195130-1020 used in supra's drop in. They flow 30L/hr more than the typical GSS341/2 walbro
http://www.densofuelpump.com/index.html

Last edited by str8dum1; 12-14-2010 at 09:32 AM.
Old 12-14-2010, 10:36 AM
  #49  
Z1 Performance
Former Sponsor
iTrader: (564)
 
Z1 Performance's Avatar
 
Join Date: Feb 2003
Location: Long Island, New York
Posts: 19,266
Likes: 0
Received 5 Likes on 5 Posts
Default

a Supra pump is much larger than a Walbro, has a positive and negative 'pole' on them and not a conventional plug as I recall (we used to use them on older Mitsu's and Subaru's back in the day)
Old 12-14-2010, 11:40 AM
  #50  
str8dum1
New Member
Thread Starter
iTrader: (11)
 
str8dum1's Avatar
 
Join Date: Oct 2007
Location: raleigh-wood NC
Posts: 8,807
Likes: 0
Received 6 Likes on 6 Posts
Default

ya i figured it was more along the bosch 044 size. if they were, finding a pigtail would be easy enough. Realistically, if there was a better option in the standard 255L, everyone would know about it.

Thats why I was wondering if the DW is going to be the same size and plug orientation as the GSS342. 3 of those in the SP triple hanger would be nice.
Old 12-14-2010, 03:35 PM
  #51  
Chris@DW
New Member
 
Chris@DW's Avatar
 
Join Date: Dec 2010
Location: Oklahoma City
Posts: 39
Likes: 0
Received 3 Likes on 3 Posts
Default

Yes, the DW300 is dimensionally similar to the GSS342. If you can hang a 342 on there, you can hang a DW300 on there, too.

Here is a .jpg of our marketing card:

Old 12-14-2010, 05:11 PM
  #52  
GreenGoblin
Registered User
iTrader: (6)
 
GreenGoblin's Avatar
 
Join Date: Feb 2007
Location: South Flordia
Posts: 1,732
Likes: 0
Received 1 Like on 1 Post
Default

Looks great chris.
Old 12-14-2010, 05:36 PM
  #53  
Blackbird CPV35
Registered User
iTrader: (19)
 
Blackbird CPV35's Avatar
 
Join Date: Feb 2005
Location: Indianapolis
Posts: 963
Likes: 0
Received 0 Likes on 0 Posts
Default

now if they can fit that into the CJM twin pump then i would be in good shape
Old 12-15-2010, 04:04 AM
  #54  
Cass007
350Z-holic
Premier Member
iTrader: (34)
 
Cass007's Avatar
 
Join Date: Apr 2008
Location: In teh Mid-A
Posts: 5,420
Received 2 Likes on 2 Posts
Default

Originally Posted by str8dum1
ya i figured it was more along the bosch 044 size. if they were, finding a pigtail would be easy enough. Realistically, if there was a better option in the standard 255L, everyone would know about it.

Thats why I was wondering if the DW is going to be the same size and plug orientation as the GSS342. 3 of those in the SP triple hanger would be nice.
Except that the fit with the walbros is so tight that the fuel floats don't work properly I know myself and Tom both had this problem. My guage stops working somewhere around 1/4 tank and Frank spent almost an hour trying to fit it in to get everything to work.
Old 12-15-2010, 09:37 AM
  #55  
binder
New Member
iTrader: (8)
 
binder's Avatar
 
Join Date: Jan 2007
Location: terre haute, IN; STL, MO
Posts: 6,457
Likes: 0
Received 7 Likes on 6 Posts
Default

Originally Posted by Blackbird CPV35
now if they can fit that into the CJM twin pump then i would be in good shape
you seriously ran out of the twin pump on e85?

maybe you should sell it and get a triple pump. Resale on the twin pump is pretty high so you won't lose much money.


Cass: who needs a fuel gauge?!?
Old 12-15-2010, 11:12 AM
  #56  
str8dum1
New Member
Thread Starter
iTrader: (11)
 
str8dum1's Avatar
 
Join Date: Oct 2007
Location: raleigh-wood NC
Posts: 8,807
Likes: 0
Received 6 Likes on 6 Posts
Default

Originally Posted by Blackbird CPV35
now if they can fit that into the CJM twin pump then i would be in good shape
Ya but you know that won't happen. Since u run e85 all the time, sump your tank and get a big single. It will be a wash after u sell your twin pump
Old 12-15-2010, 11:34 AM
  #57  
binder
New Member
iTrader: (8)
 
binder's Avatar
 
Join Date: Jan 2007
Location: terre haute, IN; STL, MO
Posts: 6,457
Likes: 0
Received 7 Likes on 6 Posts
Default

Originally Posted by str8dum1
Ya but you know that won't happen. Since u run e85 all the time, sump your tank and get a big single. It will be a wash after u sell your twin pump
wait, so a single bosch 044 is going to flow more than twin walbros? That doesn't seem right....

why not just go to triple pump?
Old 12-15-2010, 12:39 PM
  #58  
str8dum1
New Member
Thread Starter
iTrader: (11)
 
str8dum1's Avatar
 
Join Date: Oct 2007
Location: raleigh-wood NC
Posts: 8,807
Likes: 0
Received 6 Likes on 6 Posts
Default

big single does not mean an 044. LOL

Weldon 2035, aeromotive eliminator/pro, fuellab 42401, etc. Mount it right on the subframe.

triples mean triple the plumbing, triple the chance of pump failure. triple the fuel heating...

you can go triple, but if its true your gas gauge doesnt work below 1/4 thats blah esp on e85 where you get horrible mileage to begin with.

Getting the venturi to work using an external might take some work, but Ithink if you ran your return line thru the venturi like the standard CJM stage 1, it would be just fine. Pretty sure thats what pulls fuel from the other side of the saddle.

Last edited by str8dum1; 12-15-2010 at 12:44 PM.
Old 12-15-2010, 06:04 PM
  #59  
binder
New Member
iTrader: (8)
 
binder's Avatar
 
Join Date: Jan 2007
Location: terre haute, IN; STL, MO
Posts: 6,457
Likes: 0
Received 7 Likes on 6 Posts
Default

oh, so those are like 800 LPH pumps. would the walbro intake supply the surge tank fast enough for that thing to keep up?
Old 12-15-2010, 07:21 PM
  #60  
Blackbird CPV35
Registered User
iTrader: (19)
 
Blackbird CPV35's Avatar
 
Join Date: Feb 2005
Location: Indianapolis
Posts: 963
Likes: 0
Received 0 Likes on 0 Posts
Default

Originally Posted by str8dum1
big single does not mean an 044. LOL

Weldon 2035, aeromotive eliminator/pro, fuellab 42401, etc. Mount it right on the subframe.

triples mean triple the plumbing, triple the chance of pump failure. triple the fuel heating...

you can go triple, but if its true your gas gauge doesnt work below 1/4 thats blah esp on e85 where you get horrible mileage to begin with.

Getting the venturi to work using an external might take some work, but Ithink if you ran your return line thru the venturi like the standard CJM stage 1, it would be just fine. Pretty sure thats what pulls fuel from the other side of the saddle.
I wouldnt mind using a big external if i could still have the fuel level and the venturi siphon work, Ive already had one of the walbros fail this year in the middle of a 1/4 mile run


Quick Reply: no reason to buy a Walbro 255L anymore



All times are GMT -8. The time now is 03:31 AM.