PT-Performance Pump in

[Biggs]

Hey Biggs go ahead and open her up..only way really to find out is to do some wot pulls..Looks like my internals were just really stubborn and took thier sweet ass time to break in...But anyways You might be broken in. Im running my super low conservative 14 psi map right now..still pulls pretty dam hard..think im around 270 whp with the 14...which is plenty for winter daily driving..once spring hits ill put the 17 psi map back in

funny you mention that... at 177 miles I decided to try a near WOT pull... got to 5000 rpm and .... FUEL CUT!!!! (gah) I couldnt believe it. I was doing everything PTP said, I even waited a good 40-50 miles before I even attempted to push it.

im too afraid to try that again... Im at about 185 miles now. Im starting to worry if it will ever break in.(unamused)

EDIT: after reading a couple of the above posts, I will wait till i reach 250miles to try again... PTP should update their instructions to at least 200 miles before trying a WOT pull.

 

[Bravnik]

I will be sending them mine back tomorrow. So they should have one soon.

 

[C.T.B.B.]

I've read through this thread a time or two and have yet to determine what it is on these pump internals that can be "breaking in" and not only changing its' operation, but changing a it substantially. A few comments that maybe someone will clear up my misconceptions on...

How can anything be breaking in, which is simply another way of saying wearing in, when it is touted as having undergone a special manufacturing process to achieve superior Rockwell hardness to eliminate premature wear and is manufactured to a tolerance of .00005". I haven't had one apart, so educate me; it looks to me like four machined pieces of metal that work/fit together. What is there to wear in/break in? My only thought is that their claimed machining tolerances are somewhat optimistic. Again, I am not trying to ruffle any feathers, I'm just looking for technical explanations as to what is happening. I sent an email to PTP today asking about it and got this in reply:

"Every set of internals new to be broken in properly even with the tolerance
on the internals. It just a standard process to insure that they get worked
in properly. When you order your internals we do send out directions on how
to install and how to break in your fuel pump.
Thanks," To me it reads that when I asked what on the fuel pump parts need to be broken in, they tell me the pump parts do. Thanks, Captain Obvious.

How can the fuel pressure supplied by this pump not even meet the OEM pressure output when it is new? Seems some of you have shown very low pressures when new, then getting better as it breaks in. See #1 about what break in means.

Is the "fuel cut" being talked about as sharp as it is made to sound? I have had the occasional blip in performance of my car now and then but was only for a portion of a second then back again, and not at higher RPM/fuel requirement times. Why wouldn't Mazda would have put a soft cut in here rather than a total shut down?

Reading and learning, but that of course just leads to more questions. Thanks to everyone that helps us newbies make sense out of this stuff.

 

[79535]

With your statement CTBB, the first thing that pops in my mind is a new gun. How many FTF's do you get with a new gun before it begins working properly 99% of the time(every gun jams eventually)?

Beyond that, every new part needs to wear in. It is all in the tolerances. Perhaps the PT-P pump wears the coating they speak about off? Perhaps the coating is too thick? I have no idea.

I have shared the same thought as you. I have a concern about feeding metal filings into my injectors and engine. I guess I will have to wait before forming a decision whether to get this pump or not.

It is reassuring that everyone who has bought one seems to have had great experiences.

 

[zx2man]

awwww very nice thoughts gentleman..and it makes sence to me anyways....a FTF=failure to feed....usually does occur with a new weapon..a ar15-m4 platform for example usually gets more reliable as time passes with the correct firearm maintence. Some people like to polish the feedramp of stubborn 1911 pistols by shooting hundreds of rounds through it...."breakin" it in so to speak so it can reliably run jacketed hollow point ammunition. This series of moving parts that become one with each other over time..come to think of it theres alot of stuff out there that needs time to "break" in to work to the full potential..interesting

 

[79535]

I guess I should have specified what FTF meant to those who didn't know.

Thanks for covering my bases.

 

[C.T.B.B.]

Agreed, it's all in the tolerances, which is where I wonder how something with a .00005 machining tolerance is going to 'wear in". I could see if we were talking about connecting rod bearings with an oil clearance of .0011"-.0020", there could be some wear factor to consider, but with a tolerance of 1/40th of that wear should be zero, especially to a component touted to be specially hardened to prevent wear.

Just looking for a good explanation of what's happening instead of "It works now so that must have needed to be broken in."

Playing Devils Advocate, no fuel pump internals were harmed in the making of this post.

 

[Mid_Life_Crisis]

come to think of it theres alot of stuff out there that needs time to "break" in to work to the full potential..interesting

Rotary engines just keep getting faster until one day they self destruct. There's an interesting break-in for you.

 

[zx2man]

Rotary engines just keep getting faster until one day they self destruct. There's an interesting break-in for you.

LOL..............true Mid life

 

[79535]

Rotary engines just keep getting faster until one day they self destruct. There's an interesting break-in for you.

Lol. Thats hilarious.

 

[sumthaiguy]

hey guys i just got my full pump in the mail today and installing tonight. so what break-in techniques did yall use? ive heard

1) take it easy and normal and dont go over 4k for 100 miles or so.

2) take it from 1-5/6k steadily making sure to go through all ranges of rpm for a 100 miles or so.

which one is better? are there any other good break in techniques?

 

[Bravnik]

I would recommend going to 5-6k steady and holding for 30sec or so, back down and do it again. I found it easier to do in 2nd gear. This will break it in quicker. I put over 200 miles on mine not going above 4k and it was still not broke in until I did the above.