hmm thought you were on a two pump setup already..anyways its a lot easier with one pump
with two i think we would need to tap both fuel senders and turn off one pump if the side of the tank is dry
Ti Automotive (Walbro) 274 vs 285 vs 295
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hmm thought you were on a two pump setup already..anyways its a lot easier with one pump
with two i think we would need to tap both fuel senders and turn off one pump if the side of the tank is dry
Grabbed a 295. I like it.
It will not outflow two 274's, not by a long shot.
Looks like a solid 25%+ ish improvement on the 274, BUT, I have tested it as pulling more current than the 274 by about 2 amps.
Will put it in a single shot bucket and install in my own car to see what's what with cold and hot restarts and no check valve.
Chris
It will not outflow two 274's, not by a long shot.
Looks like a solid 25%+ ish improvement on the 274, BUT, I have tested it as pulling more current than the 274 by about 2 amps.
Will put it in a single shot bucket and install in my own car to see what's what with cold and hot restarts and no check valve.
Chris
That would be to complicated, I prefer simplicity with far less things to go wrong.
The idea behind this is to scavenge all fuel out or run at low fuel levels without fuel starvation, most people that track would not need
a bigger fuel pump than a single 295 with a hydramat that run a bucket less setup.
A two pump system would be easy but you would have to run a BPM4 or a one way valve on secondary pump that runs of a hob switch
before the two pumps merge into 1 line.
BPM4 would be much simpler and easier solution here.
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At 13.5 V it absolutely draws more current. I could turn that down to match flow rate from a 274 and compare, but I don't really think it matters as people won't be upgrading to a 295 for situations where a 274 was sufficient; i.e. she's going to be running full chat. Marginal EKP wise, I'm going to expect more issues vs. a 274.
Next I get a chance I'll show test bench differences.
Chris
Next I get a chance I'll show test bench differences.
Chris
Well me for exemple, i'm considering it to lower the current draw and preserve the EKP module.
so what amps does it draw at 72 psi on 13.5v at 100% duty cycle ?
According to walbro the 285 draws around 20 to 21 and 295 around 17 flat.
Which is far less for more flow and 274 seems to be same as 295 or a little less.
Because its a new pump it may draw more but once it loosens up it will settle.
According to walbro the 285 draws around 20 to 21 and 295 around 17 flat.
Which is far less for more flow and 274 seems to be same as 295 or a little less.
Because its a new pump it may draw more but once it loosens up it will settle.
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20-21 Amps set to 72 psi, giving me significantly more flow vs. a single 274, and I have it in a bucket with venturi (that's how I'll use in my car). If you're using the hydramat in your setup it'll be even better in the bucketless scenario. On my meter I'm pulling 18-19 Amps with a 274 (with less flow).
I'll run 'er for a while on bench at 100% duty cycle and see if it loosens up, I've never really seen it on the test bench but who knows. Worth a try.
I'm glad I'm testing one, it's a high output pump for sure, but it also hits home the value of a 274.
I'm a little slow on test progress as wife got injured at work and is relegated to the couch & bed. Can't walk, can't leave the house, can't put weight on her leg... which means I'm Mr. Mom for time being. I'll still get 'er done though.
I'll run 'er for a while on bench at 100% duty cycle and see if it loosens up, I've never really seen it on the test bench but who knows. Worth a try.
I'm glad I'm testing one, it's a high output pump for sure, but it also hits home the value of a 274.
I'm a little slow on test progress as wife got injured at work and is relegated to the couch & bed. Can't walk, can't leave the house, can't put weight on her leg... which means I'm Mr. Mom for time being. I'll still get 'er done though.
Well Christmas came early with babushka type packaging 
Cost a fortune in shipping but it got here a month early so cant complain.
Wife comes first dude we can wait
Cost a fortune in shipping but it got here a month early so cant complain.
Wife comes first dude we can wait
yea i agree it would be complicated..better to keep it simple...i agree a single 295 with hydramat will work for most people including myself...
i stuffed to 274s into my bucket but i am still putting together a controller for the second pump... bpm4 is too expensive for me but its a great solution for plug and play
200 is fair for a plug and play product...
but i am making something cheaper, more powerful and more flexible
might open source it if i find the time to finish it up and put it in my car for testing
Got into the workshop today and made up the fitting for the hydramat.
Ill get around to installing it after the weekend as I have a major car show on tomorrow.
Turned out a little better than i though.
Wont be buying any of those fittings again as they are much to thin.
I'll make up one more and have it cnc'd as it will be easier and stronger with a much better finish.
Ill get around to installing it after the weekend as I have a major car show on tomorrow.
Turned out a little better than i though.
Wont be buying any of those fittings again as they are much to thin.
I'll make up one more and have it cnc'd as it will be easier and stronger with a much better finish.
Turned voltage down on a 295 to match a 274's flow capability in a bucket system. It drew very close to what a 274 does, maybe quarter or half an amp more, course this was at 11.5V.
Chris
In a bucketless system it will draw less than a bucketed as the flow is greatly increased and the pump wont work as hard.
A 295 with a hydramat will outflow a 450 by at least 25% in a bucketless system from what has been seen in tests, that equates to around 40 to 50% more than a bucketed system with a 450 installed.
This will give a lot more headroom before needing to upgrade and be more than ample for most street setups.
I'm not selling these just doing this out of curiosity.
A 295 with a hydramat will outflow a 450 by at least 25% in a bucketless system from what has been seen in tests, that equates to around 40 to 50% more than a bucketed system with a 450 installed.
This will give a lot more headroom before needing to upgrade and be more than ample for most street setups.
I'm not selling these just doing this out of curiosity.
The retention clip that comes with that fitting is useless and I'll have to make a proper bracket to hold the fitting on the pump.
For now I installed the 295 in my bucket less setup to test fuel pressures, with the one way valve I installed previously on my 274 fuel pressures
where not a problem and never ran out of pressure to redline so I cant see the 295 having any issues.
With the one way valve and 295 the pressure keeps holding over 40 psi after 10 min after shut down and has no starting issues after it primes as the valve does its thing.
its raining cats and dogs here atm so testing if the ekp3 has any issues with the pump will have to wait till the weekend.
Keep you guys updated.
For now I installed the 295 in my bucket less setup to test fuel pressures, with the one way valve I installed previously on my 274 fuel pressures
where not a problem and never ran out of pressure to redline so I cant see the 295 having any issues.
With the one way valve and 295 the pressure keeps holding over 40 psi after 10 min after shut down and has no starting issues after it primes as the valve does its thing.
its raining cats and dogs here atm so testing if the ekp3 has any issues with the pump will have to wait till the weekend.
Keep you guys updated.
So the rain stopped for a few hrs and quickly dried up and I was able to do some testing.
Absolutely no issues and pressures are rock solid and never dip under 70psi but I need to readjust the FPR a little and back off the pressure to
stop the small fuel pressure fluctuations.
I think the 274 will become obselete and this will be the new pump of choice for the stage 2 or call it 2.5.
Im making between 600 to 630 rwhp on a single lpfp pump very easily as the ekp3 is cool to touch, but time will tell need to take it for a nice mountain carving run.
Absolutely no issues and pressures are rock solid and never dip under 70psi but I need to readjust the FPR a little and back off the pressure to
stop the small fuel pressure fluctuations.
I think the 274 will become obselete and this will be the new pump of choice for the stage 2 or call it 2.5.
Im making between 600 to 630 rwhp on a single lpfp pump very easily as the ekp3 is cool to touch, but time will tell need to take it for a nice mountain carving run.
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So, how can we quantify this?
Not everyone wants to use a hydramat. So how does the 295's flow stack up against the 450(274) and 525(285) in a bucketed setup at 72 psi? With and without check valve?
Not everyone wants to use a hydramat. So how does the 295's flow stack up against the 450(274) and 525(285) in a bucketed setup at 72 psi? With and without check valve?
well i can tell you that a bucketed setup flows around 25% less than a bucket less setup.
If you want maximum flow out of a single pump you have to go bucket less.
If you want maximum flow out of a single pump you have to go bucket less.
