RyanPerrella

Found a guy on Ebay selling what we need

Design II's, "flow tested whatevered" (for the injector ****'s here on the board) with the 4 hole disc design. I bought the regular ford ones because i know Roger sells the correct seals. But this guy is also selling the same injectors with the correct seals for $149 plus shipping. Seems like a great buy.

I also checked cruzin performance and they now charge $16 per injector for a not so insignificant sum of $128. So for $160 shipped you get the 4 hole stle injectors that are refreshed "or whatever" and have the originals to pop off on ebay for a $50 or something.

SIMPLE!

This is the link to the listing for the Porsche ones. But i just bought the Ford ones. They are apparently the same, but the guy put the correct o-rings on some of them and calls them Porsche 928 ones. But we should all know by now that Mr. Roger Tyson sells the correct o-rings, so support our sponsors!

http://cgi.ebay.com/ebaymotors/1985-...mZ280268011611

docmirror

1987-91 Porsche 928 - Bosch/Ford 0280150556-FOTE D5B Yellow Top 19lbs/hr - 14.5 Ohms

Is what I have, and they work flawlessly. Can't say about anything 'racing' from Ford. I would have to investigate that closely before dropping coin. Usually, it's just a marketing statement. If the injector will flow what you need, get that unless you're on the track constantly.

Some 'racing' injectors are very low resistance, around 2.5 Ohms. You do not want that for your 928. You want 13-14.5 Ohms for our LH module.

RyanPerrella

Doc,

The car is not a racing car, i just want it to run as it should, which i suspect it still isnt doing.

We will see how big a priority this is. If my cats go on today and the car passes smog then i will wait a bit and do an entire intake refresh when time allows. But if it still wont pass smog after cats, o2, plugs, then its time to pull the top of the engine off, do the intake refresh including injectors and have the MAF sent out for replacement.

FUN TIMES!

Doc, what do you think of the injectors in the ebay ad listed above?

docmirror

Look fine to me. That's where I bought mine, and they work well.

atb

I inherited David Hendricksons Ford Orange top level II's when he got his level III's. They run noisier then the OEM Bosch's. I don't think you'll find a performance improvement of one over the other, that you wouldn't find by replacing your 20 year old stockers with any style of a new injector. I would go with the level III's if at all possible for no other reason than the replacement level II's, or any injector that uses the OEM style pintle cap, tends to leave the pintel cap in the hole (actually in the intake gasket) upon removal. I'm not saying this happens to all of them, and I assume its because in some cases the pintle cap is removed to switch out the O-ring, and then not re-installed correctly afterward, but I've seen more than a few cars, my own included, that when the aftermarket injectors are pulled, the pintle cap stays in the hole and has to be fished out. The multi-orifice injectors don't use a cap, and so this wouldn't be an issue.

RyanPerrella

ive done injectors quite a bit, and have never had this issue......odd

atb

Well that's probably why Ryan.

I've only seen it when removing aftermarket injectors, not OEM.

Bill Ball

I did encounter one 928 where 4 of the pintle caps were eaten by the motor and were no longer there when we pulled the injectors. Two more were sitting in the manifold injector holes as you mention. We had just installed them and I know the caps were properly seated. I've not seen this happen on any other 928s. There was something wrong with the geometry of the fuel rails on this car, as they seemed to sit too low, forcing the pintle cap into the lip at the bottom of the manifold injector hole.

The pintle cap is a nuisance. AFAIK, all it does is protect the tip during installation and has no bearing on spray pattern. What about just leaving them off?

Ketchmi

About the only real way to put new pintle caps on is with heat. If they are just pressed on they will usually break on installation or fall off afterwards.

I have used a lot of Ford style Bosch injectors from 19# to 42# without any problems at all. I can't say that they perform better but they do perform at least as well as OEM.

Peter F

I have both removed and installed pintle caps without heat and no issues.
The trick is to use a tool to apply even pressure both ways.
What I found worked best is a 8 or 9 mm combination spanner.
(Just pick the smallest that will fit over the pintle and rest solid on the lip)
Open end to remove and closed end to mount it back again.
When removing just put a fingertip on top of the pintle and work your way gently around until it pops off.(fingertip will keep from flying away and save you time not having to look for where it went:-))

No failures so far.

/Peter

Tom in Austin

Hey, speaking of injectors, what should I use for my '94 GTS? Will the 87 - 91 Ford 19 lb, yada, yada injectors work or does this shark want more gas ??

Would be fun to rehash this all over again for a GTS ;-)

Peter F

You should use the same 19lbs injectors on a GTS.

/Peter

Mrmerlin

If your getting the new 4 hole injectors for your S4 , make sure that you get the D5B these will have the proper C clip groove and they will also have the proper 19# rating, From what I have found the use of the type 3 injectors may possibly lead to an engine fire, there are no C clip grooves on the type 3 injectors, and there is not enough of a seat in the intake manifold for the injector to sit on, in otherwords there is a possibility the the type 3 can slide dopwn into the manifold insert and then fule will spray from the rail
I just got a set of PINK D9B injectors from a 2007/08 Mustang GT and they are rated at 22# back to the vender.
These look just like the injectors in the car already except they are pink instead of yellow and they flow 22# and they have the C clip groove

fraggle

Excuse my ignorance here...

I understand that increasing injector size (19 to 22 to ???) Is advantageous on boosted engines. What are the pros and cons on a stockish motor? I'm planning headers + x-pipe and high flow cats. Should I just grab the DSB 19#'s mentioned above or go for something else? I figure eventually (sooner?) I'll probably need to sharktune it.

Thoughts???

Mrmerlin

whats the year of your car can you post under your avatar.
In general if your adding more air then you add more fuel, if you change the injectors ( size, IE flow capability) then you will also need to replace the fuel pressure regulator with an adjustable unit.

If the motor is stock with addition of some exhaust mods the 19 should work fine, but for ultimate tuning the system should be monitored with a O2 sensor to find the sweet spot mixture wise.
That said putting 19# 4 holes into the stock motor make the engine have slightly better throttle response and make starting easier.