What's Up ???????

[Kirby]

Hey, if a good explaination is good enough for you, be happy and don't be so agressive.

[tthrift]

i would like to say thank you to dodge tweaker for setting this record straight.

thanks tommy

[Gear_Head]

I'm certainly no expert on fuel injectors. but I went to the shop and looked at the stock (purple) injectors. It looks to me like the shoulder on the (Gold) plastic pieces were installed to keep the bottom O Ring in place. It is hard to believe that that small thin plastic piece would have much effect on negating heat soaking of the injectors. There would be no transferring to the new injectors, it feels like the plastic pieces are on the old injectors for good. You'd tear um up tryin to remove them. I don't think that solves anything, but it kinda makes sense of what DODGETWEAKER had to say.
MY TWO CENTS (but not said with much conviction, cause I'm still not sure).[:I]
Alan

[Kirby]

Would someone please look up ANY statement by dodgetweaker, my search on these pages came up blank.

When we did our install I took closups of the injector nozels. The metal portion of both were almost identical. The lower injector O ring is held in place by a radial grouve in the injector (also the same on both).

I am fairly familiar with metal on metal contact, and when the new injectors were seated, there was metal on metal contact. That fuel rail is no precision piece to locate the injectors vertically, and if I'm not correct gravity still pulls downward towards more metal to metal contact.

I think someone may be just a little edgy because they got caught with their pants around their ankles!

I am curious about 2 guys who have never posted on this site before all of a sudden coming unglued at the prospect of another Mopar Performance screwup.

Mr bespoke(2 posts and no info), who are you and who is this dodgetweaker(no posts) that you are so enamored of?

We had a similar guy who got all worked up over a little criticism of MP before, and he turned out to be a shill for the MP program.

Who are you?

You aren't the engineers that decided that we didn't need a rear sway bar are you? We seem to be losing little pieces of the PT along the way and hearing a lot of B.S. about how we didn't need those parts anyway.

[Kirby]

[quote]Originally posted by Gear_Head

I'm certainly no expert on fuel injectors. but I went to the shop and looked at the stock (purple) injectors. It looks to me like the shoulder on the (Gold) plastic pieces were installed to keep the bottom O Ring in place. It is hard to believe that that small thin plastic piece would have much effect on negating heat soaking of the injectors. There would be no transferring to the new injectors, it feels like the plastic pieces are on the old injectors for good. You'd tear um up tryin to remove them. I don't think that solves anything, but it kinda makes sense of what DODGETWEAKER had to say.
MY TWO CENTS (but not said with much conviction, cause I'm still not sure).[:I]

Nozle caps have been a standard on injectors almost as long as there have been injectors, they thermally protect the sensitive jet area and also protect it from backfire damage etc, along with locating the tip in a precision manner, without metal to metal contact, which would eventually cause poor sealing of the intake plenum. They are almost always a snap on(these may well be bonded), and are asuredly part of an injector re-seal job, when the injectors are removed(just as you would not re-use a gasket, beyond a very short time. If the injectors are pulled new caps and O rings are in order.

I'm not sure what about this could make someone so angry.
I put synthetic oil in my PT, and for the life of me I cannot visualise that it is doing a better job, but I do it because it is the BEST that I can do for my engine. If I can avoid potential problems with the injectors in my car, I will do what I think is the best that I can do.
Rigt now I would ask anyone to find the motivation for anyone to get beligerant over this issue. What motivation could cause this?

[Kirby]

One last thing to think about:

If I am dead wrong, who's engine will be damaged?

If I am just a little right, then some people will find out the hard way, and most assuredly the people responsible will be doing something else, because they don't stand behind their product!

If DCX is so proud of their product, then show it.
They call it a warranty!

[Kirby]

This is a note from a well known Fuel Injector service, thought you might be interested.

The most common problem with injectors is they accumulate a buildup of wax, tars, and olefins inside the injector and on the pintle/seat area. These types of debris buildup will restrict the flow of fuel through the injector. These are elements of the gasoline that are baked on the injector after the engine is turned off and the temperature climbs to the highest point. The injectors are manufactured to such close tolerances that a 5-micron buildup (a human hair measures 40 to 90 microns) will reduce the flow up to 25%.

[macster]

Hell

Some one should just email Siemens and get their take on it.

Done! I am awaiting a response.


macster

[Kirby]

Thank You Macster!

[PT-Dave]

quote:Originally posted by Kirby

Would someone please look up ANY statement by dodgetweaker, my search on these pages came up blank.

Kirby! Lighten up! Who ruffled your feathers? If you had clicked on the link in espoke's post, you would have seen dodgetweaker's reply to your same question in the SRT forums. Here is the link again: http://www.srtforums.com/forums/show...threadid=12118

I have inspected my old injectors and I respectfully disagree with your conclusions. I am not an engineer, but I do not see your argument as plausible. The plastic ring that you claim is for reducing heat soak and keeping the injector from making metal to metal contact can have no thermal cooling properties. How would a PLASTIC part be able to cool anything within the confines of the intake? It cannot. As for keeping clearance, I submit that if the plastic ring does come into contact with the intake (which I doubt), that the removal (or deletion) of it will provide even more clearance for the injector tip itself. How can the metal tip expand to fill the space taken by the ring? Again, it cannot. The o-ring seals are what keeps the injector centered and away from metal to metal contact. Otherwise, they would leak. The clips on the fuel rail keep the injectors from being pulled down by gravity. I certainly trust DCX and MOPAR/PVO engineers to give us the correct parts and not someone who constantly looks for something to complain and/or argue about.

If you don't like what you see, then don't get it and be quiet. This is getting real old. Oh, I know I don't have to read your posts, but I will continue to do so. And at some point, like now, I will have to have my say in the matter. This time, in my opinion, you are dead wrong. Until you have substantive proof about your claims you should keep them to yourself.

You are beating on a non-issue. Give it up!